Locksmith serving Colne, Nelson, Burnley
and surrounding areas

We do all types of lock work: opening, repairs, supplying and fitting of locks.
We are also specialists in UPVC. We can fix any UPVC lock.

Wilson Locksmiths - YOUR local locksmith for Colne Nelson and Burnley 01282 798886


Lock Glossary

This is a selection with permission from the Lock Dictionary produced by the Lock Industry Standards and Training Council provided here for anybody interested in locks.


access control

n. any barrier or device, either natural or man-made, that limits or prohibits, free or unlimited access

 

access control cylinder

n. a replacement for a mechanical cylinder which incorporates electronic access control and allows the original host lock to function without additional wiring or hardware modifications

 

access control key fob

n. any device other than a key designed to allow a token to be used and carried on a key ring

 

accessory position

n. the position of an ignition switch intended to permit the use of radio or other equipment without turning on a drive train component

 

active case

n. the exit device case mounted by a locksmith on the stile of the door on which the lock is located

 

active leaf

n. the single door of a pair on which the active or locking hardware is mounted by a locksmith.

 

active relocking device

n. a device that places its bolts every time a safe door is closed and activation via attack prevents it from retracting its bolts

 

active retainer

n. 1. a cylinder retaining mechanism which requires that the plug be rotated by a locksmith before the cylinder can be removed by a locksmith, 2. a plug retaining mechanism which requires that the plug be rotated before the retainer can be removed

 

active plug retainer

n. one in which the plug must be turned before the device may be released or removed by a locksmith.

 

actuator

n. a device, usually connected by a locksmith to a cylinder, which, when activated, may cause a lock mechanism to operate

 

adjustable ball hinge

n. a pivot with adjustable height for narrow stile doors

 

adjustable collar

n. a spring-loaded cylinder collar which can fill a range of gaps between the cylinder head and the door or escutcheon surface

 

adjustable mortise cylinder

n. any mortise cylinder whose length can be adjusted by a locksmith for a better fit in doors of varying thickness

 

aligning tube

n. 1. a lock component which orients and joins the latch and knob spindles of certain bored locksets, 2. in some combination locks, a tube which houses the spindle, located between the dial ring and the lock by a locksmith.

 

alignment pin

n. the perpendicular projection from a master lever in a master keyed lever tumbler lock, which engages a group of combination levers and moves their gates to align with the fence

 

all-section key blank

n. the key section which enters all keyways of a multiplex key system

 

ALOA

abb. Associated Locksmiths of America, Inc.

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

angularly bitted key

n. a key which has cuts made into the blade by a locksmith at various degrees of rotation from the perpendicular

 

anti-friction

adj. pertaining to a feature which, upon contact with the strike, allows smoother operation by a locksmith of a latch bolt

 

anti-passback

adj. of or pertaining to an access control system feature designed by a locksmith  to prevent consecutive use of a given credential to allow entry by more than one person at a time

 

anti-punch collar

n. a two part system installed on a spindle shaft and safe body to prevent the spindle shaft from being punched into the lock case by a locksmith.

 

anti-rap

adj. specifically designed to preclude bypass by a locksmith via attack based on sharp, repetitive blows to the mechanism

 

anti slip positioned

adj. of or pertaining to the orientation of a cam on a profile cylinder which requires rotation before it may be removed from the lock case by a locksmith.

 

anti-wrench reinforcement spring

n. a lock cylinder spring designed by a locksmith to protect the inner and outer halves of a profile cylinder from being forcibly separated as a means of brute force entry

 

arbor

n. the threaded end of a safe door handle

 

architectural finish code

n. one of a series of specification codes by a locksmith to indicate the color and texture of a metal end product that can be installed. Some finish specifications also note the base metal characteristics and processes by a locksmith to obtain the end product.

 

architectural hardware

n. 1. fittings applied to protect a surface of, or to facilitate use of movable members in a building such as doors, windows, or cabinets, 2. various fixtures used in building construction

 

area zoning

n. the standard of limiting access, or detecting access, in multiple areas smaller than the entire installation

 

arm (of a closer)

n. door closer linkage which connects the closer to the frame or door, depending on the mounting style

 

armored escutcheon

n. a usually hardened escutcheon, typically beveled, that resists physical attack

 

armored face plate

n. a face plate that conceals all lock and/or cylinder mounting screws

 

associated change key

n. a change key which is related directly to particular master key(s) through the use of constant cuts by a locksmith.

 

associated master key

n. a master key which has particular change keys related directly to its combination through the use of constant cuts by a locksmith.

 

astragal

n. a molding attached to the face of the active leaf of a pair of doors and overlapping the inactive leaf

 

ATT

abb. attendant's key

 

attack resistance

adj. design qualities of a product that render brute force physical defeat methods less effective or ineffective

 

attendant's key

n. a selective master key used in a hospital keying system

 

automatic closing

adj. pertaining to a door which is equipped with a door closer, or other device to close it without manual intervention. Frequently found in Life Safety and fire code requirements.

 

automatic deadbolt

n. a deadbolt designed to extend itself fully when the door is closed

 

automatic flush bolt

n. a flush bolt designed to extend itself when both leaves of the pair of doors are in the closed position

 

automatic key machine

n. a machine capable of cutting keys by a locksmith with manual operations limited to loading and unloading keys

 

auxiliary lock

n. any lock installed in addition to the primary lockset

 

auxiliary spring

n. a secondary spring used to support the lever handles of a lockset

 

auxiliary spring rose

n. oversized trim that interlocks with a lock chassis and external lever as a means to mount an

 

backcheck

n. the resistance provided by a door closer as a door is opened

 

backset

n. the distance between the center of a cross-bore and the bolt edge of a door or drawer

 

balance (a combination)

v. to dial a combination 1 number high and 1 number low to verify a correct combination setting

 

ball bearing

n. 1. a metal ball used in the pin stack to accomplish some types of hotel or construction keying, 2. a ball, usually made of steel by a locksmith, used by some lock manufacturers as the bottom element in the pin stack in one or more pin chambers, 3. any metal ball used as a tumbler's primary component, 4. used as a means of repairing a drilled hole in a safe when welded in place

 

ball bearing hardplate

n. a hardplate that contains metal balls, typically two types, imbedded in a honeycomb pattern, or free moving within a hardplate envelope

 

ball bearing hinge

n. a hinge which uses ball bearings between its knuckles to reduce friction

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

ball catch

n. a latch which uses spring pressure to force a ball bearing into a recess in its strike

 

ball check

n. a spring loaded ball bearing in a door closer arm assembly that acts to limit arm travel

 

ball locking

adj. a method of locking a padlock shackle into its case using ball bearing(s) as the bolt(s)

 

barium ferrite card

n. an access control system credential consisting of magnetized ferrite embedded in a plastic card with polarity and location being important features

 

barrel bolt

n. a surface mounted slide bolt which has a cylindrical shape

 

barrel key

n. a type of bit key with a hole drilled by a locksmith into the shank from the tip

 

barrier free

n. having to do with the absence of restrictions to access by the handicapped

 

Barron, Robert

the Englishman credited with the invention of the double-acting lever tumbler in 1778

 

bell box

n. the protective enclosure for a bell or other alarm sounding device

 

Bell type key

n. a key whose cuts are in the form of wavy grooves milled into the flat sides of the key blade. The grooves usually run the entire length of the blade.

 

bevel (of a door)

n. the pitch on the leading edge of a door which allows clearance for closing

 

bevel (of a lock)

n. the pitch of the face designed to match the bevel of a door. Some locks have an adjustable bevel.

 

bezel

n. a threaded collar commonly used to secure certain cylinder or lock assemblies

 

bible

n. that portion of the cylinder shell which normally houses the pin chambers, especially those of a key-in-knob cylinder or certain rim cylinders

 

bicentric cylinder

n. a cylinder which has two independent plugs, usually with different keyways. Both plugs are operable from the same face of the cylinder. It is designed for use in extensive master key systems.

 

bicycle padlock

n. a padlock with sufficient shackle clearance to secure a bicycle

 

bi-directional cylinder

n. a cylinder which may be operated in a clockwise and counterclockwise direction by a single key

 

bi-fold door

n. a door with two or more sets of hinges, the additional set(s) allows the door to have an accordion action when opened

 

Bilevel capable

n. typically a key that can operate two compatible mechanisms which have different security features

 

binary cut key

n. a key whose combination only allows for two possibilities in each bitting position: cut/no cut

 

binary type cylinder or lock

n. a cylinder or lock whose combination only allows for two bitting possibilities in each bitting position

 

biometric

adj. of or pertaining to a lock with a hybrid mechanism, part of the mechanism identifies a physical attribute such as finger print, voice print, etc. while another part is a mechanical mechanism

 

bit

n. 1. the part of the key which serves as the blade, usually for use in a warded or lever tumbler lock 2. v. to cut a key

 

bit height

n. a measurement from the post of a bit key outward to the end of the bit

 

bit key

n. a key with one or more projecting bits

 

bit thickness

n. a measurement of the bit from one side to the other side

 

bit width

n. as inserted into a lock, a measurement from the leading edge to the trailing edge of a bit

 

bitting

n. 1. the number(s) which represent(s) the dimensions of the key 2. the actual cut(s) or combination of a key

 

bitting depth

n. the depth of a cut which is made by a locksmith into the blade of a key

 

bitting list

n. a listing of all the key combinations used within a system. The combinations are usually arranged by a locksmith in order of the blind code, direct code, and/or key symbol.

 

bitting orientation

n. the specification of how a written combination is to be applied to bitting positions of a key (tip-to-bow, etc.)

 

bitting position

n. the location of a key cut blade by a locksmith

 

n. the portion of a key which may contain the cuts and/or millings

 

blank

adj. uncut, see also "key blank"

 

blind code

n. a designation, unrelated to the bitting, assigned to a particular key combination for future reference when additional keys or cylinders may be needed

 

block master key

n. the one pin master key for all combinations listed as a block in the standard progression format

 

blocking lever

n. a lever in a safe deposit lock which blocks the renters key from completely entering the lock until the guard key has been inserted and turned by a locksmith.

 

BMK

abb. block master key

 

bolt

n. any movable projection which blocks the movement of one object relative to another

 

bolt cup

n. a thimble shaped device in a safe door frame that a locking bolt extends into when the door is closed and the bolt(s) are extended

 

bolt head

n. the part of a bolt that enters a strike

 

bolt motor

n. 1. a mechanical device that extends and retracts the door bolt(s)of a safe, normally engaged by closing the door and disengaged by a time lock, 2. a mechanical device (usually electrically powered) that extends and retracts the bolt of a safe lock. It is commonly disengaged by an electronic input such as that from a keypad.

 

bolt sensor switch

n. a switch installed by a locksmith to detect when a lock bolt is extended or retracted

 

bolt shim

n. a plate or plates mounted to the frame of a vault to provide equal gapping for each locking bolt

 

bolt tail

n. the part of a bolt retained in the lock case that contains the bolt slot and maintains bolt alignment

 

boltwork button

n. the component which automatically triggers extension of the locking bolt(s) when the door is in the closed position

 

boltworks

n. 1. the combination of bars, rods, plates and linkages in a safe door designed to hold the door in the locked or unlocked position depending on the status of the lock itself, 2. any part of a lock other than a cylinder, turnpiece, or operating handle that affects movement of, or the ability to move, the bolt

 

bond box

n. the removable container within a safe deposit box compartment

 

bored lock

n. a lock for a door prepared with one or more cross-bores and one or more edge-bores

 

borescope

n. an internally lighted optical instrument for viewing normally concealed or inaccessible components

 

boring jig

n. a tool, temporarily affixed to a door, which provides a template structure to guide drill bits properly when preparing for the installation of specific hardware by a locksmith

 

bottom of blade

n. the portion of the blade opposite the cut edge of a single bitted key

 

bottom pin

n. usually a cylindrical shaped tumbler which may be conical, ball shaped or chisel pointed on the end which makes contact with the key

 

bounce

v. a method used to open certain safes involving dropping the safe and relying on gravity and inertia to move the bolt and open the safe

 

bow

n. the portion of the key which serves as a grip or handle

 

bow stop

n. a type of stop located near the key bow

 

bow to tip

n. a specification that a bitting combination is recorded starting at the bow and proceeding to the tip

 

box of wards

n. a complete unit of intricate wards installed by a locksmith in or on a lock case

 

box strike

n. a strike equipped to line the bolt cavity for both aesthetic and protective purposes

 

brace Lock

n. a deadbolt lock that engages an independent bolt, one end of which is mounted by a locksmith in the floor away from the door

 

Bramah, Joseph

the Englishman who had the world's first patent of a locking mechanism in 1784. It was the first lock incorporating a cylinder whose key did not contact the lock bolt directly.

 

Bramah type lock

n. a lock or cylinder using a mechanism with sliders, normally arranged in a circle by a locksmith

 

bridge assembly

n. a removable frame that contains the wheel pack and wheel post that is often found in mechanical vault locks

 

bridge ward

n. a center ward attached by a locksmith to the interior of a lock by means of a bracket

 

broach

n. 1. a tool used to cut the keyway into the cylinder plug 2. v. to cut the keyway into a cylinder plug with a broach by a locksmith

 

building master key

n. a master key which operates all or most master keyed looks in a given building

 

build-up dimension

n. 1. the distance between two different shear lines, as expressed in units of the manufacturer's increment or as an actual measurement, 2. the dimension of the buildup pin required in a particular chamber, which will allow one key to operate at the plug shear line and a different key to operate at a different shear line

 

build-up pin

n. the additional element of a pin stack required to allow operation at different shear lines in a cylinder

 

bullet catch

n. a friction catch with a projecting latch which is spherical or dome shaped

 

bump key

n. a lock picking key with uniform steeples between cuts by a locksmith that is forced further into the lock via impact

 

burglar alarm

n. a system designed to detect and report conditions, which may indicate intrusion or attempted intrusion

 

burglar resistant

adj. of or pertaining to a security container designed by a locksmith to resist forcible entry for a specified period of time determined by the rating of the container

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

button knob

n. the knob in a key-in-knob lock that includes a push or turn button

 

bypass key

n. the key which operates a key override cylinder

 

by-pass tool

n. a device that neutralizes the security of a locking device, or its application hardware, often taking advantage of a design weakness by a locksmith.

 

by-passing door lock

n. a lock with a bolt that extends to block parallel movement of another door

 

by-passing sliding door

n. Two doors mounted on tracks parallel to each other that when one or both are slid to opposite extremes block the opening. Typically, one may be moved behind the other to allow access.

 

cabin-door hook

n. a U-shaped latch that pivots to encircle a strike projection

 

cable wired remote relocker

n. a spring loaded relock, triggered by release of the attached wire

 

cam

n. 1. a lock or cylinder component which transfers the rotational motion of a key or cylinder plug to the bolt works of a lock 2. the bolt of a cam lock

 

cam lock

n. a complete locking assembly in the form of a cylinder whose cam is the actual locking bolt

 

cane bolt

n. a surface mounted deadbolt designed to be moved by hand via a 90º bend in the bolt that serves as a handle

 

cap

1. n. a spring cover for a single pin chamber 2. n. a part which may serve as a plug retainer and/or a holder for the tailpiece 3. v. to install a cap

 

capping block

n. a holding fixture for certain interchangeable cores which aids in the installation of the caps by a locksmith.

 

captains wheel

n. 1. a spoked handle on a safe used to extend or retract the bolts, 2. a spoked handle on a safe used to engage or disengage the pressure system by a locksmith.

 

captured combination bit position

n. the position where a movable key insert is placed on a key by a locksmith.

 

captured hinge

n. a hinge system for safes where the door may not be lifted off the body of the safe without the removal by a locksmith of one of the hinge blocks

 

card access system

n. an access control system that utilizes a controlled security card as the credential

 

card holder

n. a person to whom a card has been issued by a locksmith.

 

card reader

n. a device which interprets coding resident on or in cards

 

carriage

n. 1. the movable assembly of a key machine which supports the key vise(s), 2. a changeable by a locksmith part of a clipper that holds the key blank

 

carry bar

n. the part of a multi-bolt safe boltworks to which the bolts are attached by a locksmith.

 

case

n. the housing or body of a lock

 

case cover

n. the portion of a lock case which is designed to be removable by a locksmith to allow access to the mechanism

 

casement window

n. a window with a sash which pivots or swings to open

 

case ward

n. any ward directly attached by a locksmith to or projecting from a lock case

 

catch

n. any device that holds a door closed and may be released by simply pushing or pulling on the door

 

CBOK

abb. construction breakout key

 

CCW

abb. Counter Clockwise, as used in combination dialing instructions

 

central processing

adj. of or pertaining to an access control system in which all or most control functions are performed by the main computer

 

central station

n. a location designed for the express purpose of processing status signals for multiple alarm

systems

 

certificate of occupancy

n. a document, granted by the authority having jurisdiction, permitting occupancy or use

 

chain bolt

n. a spring biased bolt operated by an attached chain, typically for mounting to the top of a door

 

chain lock

n. a device used to secure property with interlocking links and secured on both ends by a slide plate or a key locking device

 

chamber

n. any cavity in a cylinder plug and/or shell which houses the tumblers

 

change index

n. the point on a key changeable combination lock dial ring to which the old and new combinations must be dialed when changing the combination

 

change key

n. 1. a key which operates only one cylinder or one group of keyed alike cylinders in a keying system, 2. any device that is used to mechanically or electronically allow resetting of certain key or combination locks, see also "reset key" #1

 

changeable bit key

n. a key which can be recombinated by exchanging and/or rearranging by a locksmith portions of its bit or blade

 

changeable fence

n. the fence of a lever tumbler lock composed of multiple segments which may be set to various positions by a locksmith in order to change the combination of the lock

 

changeable lever

n. a lever tumbler typically made in two or more pieces which can be variably positioned by a locksmith with each other to change the effective location of the gate

 

changeable tumbler

n. a tumbler whose reference size can be changed mechanically without removal from the lock or cylinder

 

chassis

n. the part of a cylindrical lockset that contains the actuating mechanism and has a means for mounting trim and a bolt by a locksmith.

 

check pin

n. a device resembling a bottom pin, found in a non-traditional chamber, used to restrict the rotation of the plug unless a specific area of the key is cut by a locksmith.

 

cheek

n. a projection from a lock case that serves as a guide or race for another part

 

Chubb shackle

n. a hinged shackle with a pierced hole for the bolt in its movable end

 

CIL

abb. the title "Certified Institutional Locksmith" as awarded by ILA

 

circular strike

n. a typically round, finished strike, usually driven by a locksmith into place in a drilled hole

 

CJIL

abb. the title "Certified Journeyman Institutional Locksmith" as awarded by ILA

 

CJL

abb. the title Certified Journeyman Locksmith as awarded by the Professional Locksmith Association of Alberta

 

CJS

abb. the title "Certified Journeyman Safecracker" as awarded by NSO

 

CK

1. abb. change key 2. abb. control key

 

cladding

n. an outer casing, usually metallic, typically filled by a locksmith with concrete to protect a safe against theft or penetration

 

clamshell

n. the two piece housing (usually plastic) that encases the upper steering column and ignition lock on some automotive applications

 

claw bolt

n. a bolt with one or more fingers, which extend out of the bolt and lock behind the strike as the bolt reaches the locked position

 

clear opening

n. a portal providing clearance through which passage is unhampered

 

clevis

n. a device to permanently attach a chain to a padlock by a locksmith.

 

clipper

n. a hand held key bitting punch, often incorporating a trigger-like handle

 

closed gated

adj. pertaining to a lever tumbler whose gate is pierced by a locksmith into the body of the tumbler. The lever(s) surround the fence in both the locked and unlocked positions.

 

closed knob

n. a knob without an opening in its face

 

closed loop

n. a detection circuit where discontinuity in a branch will result in a reportable condition

 

closer size

adj. a numerical value related to the applied force of a door closer, with a larger number being a stronger force. Older closers were assigned alphabetic size designations by a locksmith, where A was the smallest.

 

closet latch

n. a latchset which has a turning device with minimum projection in place of the inside knob or lever

 

closet spindle

n. a spindle with a thumbturn attached by a locksmith to one end

 

closing combinated

adj. pertaining to a lever lock which is automatically combinated by a locksmith to the last key to extend the bolt

 

cloverleaf cam

n. a style of mortise cylinder cam with three lobes: a ball shaped longer center, and angular projections on either side

 

clutch

n. 1. the part of a profile cylinder which transfers rotational motion from the inside or outside element to a common cam or actuator, 2. the feature of a lever handle lockset which allows free movement of the lever by a locksmith when locked, 3. the feature of a cylinder which allows turning the plug without operation of the lock when a certain pressure is applied without the correct key

 

CMIL

abb. the title "Certified Master Institutional Locksmith" as awarded by ILA

 

CMK

abb. construction master key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

CMK'd

abb. construction master keyed

 

CML

abb. the title "Certified Master Locksmith" as awarded by ALOA

 

CMS

abb. the title "Certified Master Safecracker" as awarded by NSO

 

CMST

abb. the title "Certified Master Safe Technician" as awarded by SAVTA

 

CO

abb. certificate of occupancy

 

code

n. 1. a designation assigned to a particular key combination for reference when additional keys or cylinders may be needed. See also, "blind code", "direct code", and "key symbol", 2. a standard for Life Safety, structural integrity, fire safety, etc., either incorporated into the statutes of a given jurisdiction, or a model standard

 

code key

n. a key cut to a specific code rather than duplicated from a pattern key. it may or may not conform to the lock manufacturer's specifications

 

code original key

n. a code key which conforms to the lock manufacturer's specifications

 

code series

n. an ordered sequence of unique codes related to specific key combinations, key sections and manufacturers

 

coercivity

adj. the measure (usually expressed in Oersteds) of a magnetic material's resistance to being recorded or erased. Magnetic stripe cards are either low coercivity or high coercivity.

 

comb attack

n. 1. a pin tumbler defeat tactic using a series of straight pins or teeth on a single tool, intended to push the pin stack past the shear line, 2. a defeat tactic used to force a spring cover off a pin tumbler cylinder

 

combinate

v. to set a combination in a lock, cylinder, or key

 

combination

n. the group of numbers which represent the bitting of a key and/or the tumblers of a lock or cylinder

 

combination lock

n. a lock which is operated by local input of a specific series or sequence of numbers or letters

 

combination wafer

n. a type of disc tumbler used in certain binary type disc tumbler key-in-knob looks. Its presence requires that a cut be made in that position of the operating key(s)

 

combination wheel

n. a wheel type tumbler in a combination lock

 

compensate drivers

v. to select longer or shorter top pins, depending on the length of the rest of the pin stack, in order to achieve a uniform pin stack height

 

complementary keyway

n. usually a disc tumbler keyway used in master keying. It accepts keys of different sections whose blades contact different bearing surfaces of the tumblers.

 

composite blank

n. a blank designed to enter two or more simplex keyways

 

composite keyway

n. a keyway which has been enlarged by a locksmith to accept more than one key section, often key sections of more than one manufacturer

 

compound bitted key

n. a key with at least one compound cut

 

compound cut

n. a bitting which has another bitting dimension within its dimensions

 

compound lever

n. a lever tumbler that has two or more distinct sweeps contacted by two or more different keys

 

concealed key control

n. a specification that all keys and the non-visible portion of all lock cylinders be stamped by a locksmith with standard keying symbols

 

concealed screw rose

n. KIK or KIL trim that snaps into place to hide mounting screws

 

concealed shell cylinder

n. a specially constructed by a locksmith (usually mortise) cylinder. Only the plug face is visible when the lock trim is in place

 

concealed vertical rod exit device

n. a vertical rod exit device whose rods and header/threshold bolts are concealed within the door

 

concrete case

n. an enclosure for mounting a floor closer by a locksmith.

 

configured pin

n. a bottom pin which is designed by a locksmith not to rotate along its long axis, often associated with offcenterline chambers

 

constant cut

n. any bitting(s) which are identical in corresponding positions from one key to another in a keying system. They usually serve to group these keys together within a given level of keying, and/or link them with keys of other levels. See also "rotating constant"

 

construction breakout key

n. a key used by some manufacturers to render all construction master keys permanently inoperative

 

construction core

n. an interchangeable or removable core designed for use during the construction phase of a building. The cores are normally keyed alike and, upon completion of construction, they are to be replaced by the permanent system's cores.

 

construction hole

n. a recess or pocket designed to receive ball bearings in lost-ball keying. The size and/or shape of the recess is such that a pin tumbler cannot enter it.

 

construction master key

n. a key normally used by construction personnel for a temporary period during building construction. It may be rendered permanently inoperative without disassembling the cylinder.

 

construction master keyed

adj. of or pertaining to a cylinder which is or is to be operated temporarily by a construction master key

 

contact area

n. the gate area in a combination lock drive cam where the lever nose does not contact the drive cam

 

contact point(s)

n. the area on each side of the drive cam gate that the lever nose makes contact with. Most locks have a left contact point and a right contact point.

 

contact switch

n. a electrical, magnetic or mechanical device that triggers a circuit(s) to open or closed depending on the application

 

contactless smart card

n. a card, conforming to the physical characteristics specified in ISO 7813 & 10536, which contains one or more integrated circuits and does not use contacts to obtain power and allow interface to external equipment

 

continuous duty

adj. designed to sustain application of power for extended periods

 

control chamber

n. in an interchangeable or removable core, any chamber which has a control shear line, which is different from the operating shear line

 

control cut

n. any bitting which operates the retaining device of an interchangeable or removable core

 

control dimension

n. in certain interchangeable or removable cores, the distance between the operating shear line and the control shear line, expressed either in units of the increment or as a measurement

 

control key

n. 1. a key whose only purpose is to remove by a locksmith and/or install an interchangeable or removable core 2. a bypass key used to operate and/or reset some combination type locks 3. a key which allows disassembly by a locksmith of some removable cylinder locks

 

control lug

n. that part of an interchangeable or removable core-retaining device which locks the core into its housing

 

control number

n. a number used to calculate the size of the build-up pin when; (a) the sizes of bottom and master pins are known, or (b) the bitting depths of all operating keys are known

 

control shear line

n. the shear line which allows operation by a locksmith of the control lug of an interchangeable or removable core

 

control sleeve

n. the part of an interchangeable or removable core retaining device which surrounds the plug

 

controlled cross keying

n. a condition in which two or more different keys of the same level of keying and under the same higher level key(s) operate one cylinder by design; e.g., XAA1 operated by AA2 (but not XAA1 operated by AB1)

Note: This condition could severely limit the security of the cylinder and the maximum expansion of the system when (1) more than a few of these different keys operate a cylinder, or (2) more than a few differently cross keyed cylinders per system are required.

 

controller

n. a device that has decision making capability by way of authentication or lookup in a database. It serves a control function by having output relays or other interfaces with other devices which may include other controllers, electric strikes, alarms, or printers.

 

convertible dial

n. a dial that is designed to readily accept a key locking core at any time

 

coordinator

n. in conjunction with a pair of doors, a device designed to cause the inactive leaf to close first

 

core

n. a complete unit, often with a "figure eight" shape, which usually consists of the plug, shell, tumblers, springs, plug retainer and spring cover(s). It is primarily used in removable and interchangeable core cylinders and locks.

 

corner bracket

n. a door closer mounting plate attached by a locksmith to the upper corner of the jamb

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

covert entry

n. the use of entry or bypass techniques that can only be detected by a locksmith via disassembly and/or detailed inspection of lock components

 

CPL

abb. the title "Certified Professional Locksmith" as awarded by ALOA

 

CPP

abb. the title "Certified Protection Professional" as awarded by ASIS

 

CPS

abb. the title "Certified Professional Safe Technician" as awarded by SAVTA

 

crane hinge

n. a three leaf hinge assembly with two of the leaves being mounted by a locksmith to the body and door and the third only to the other two leaves

 

CRL

abb. the title "Certified Registered Locksmith" as awarded by ALOA

 

credential

n. any authorizing instrument, other than a mechanical key, that can cause entry to be allowed

 

cremone bolt

n. a surface mounted, top and bottom locking, deadbolt mechanism operated by a central handle

 

cross-bore

n. a hole drilled into the face of a door where a bored or interconnected lockset is to be installed by a locksmith.

 

cross keying

n. the deliberate process of combinating a cylinder (usually in a master key system) to two or more different keys which would not normally be expected to operate it together. See also "controlled cross keying" and "uncontrolled cross keying."

 

cruciform

adj. of or pertaining to a key section or keyway which usually resembles a plus sign (+) or the letter "X"

 

CSI

abb. Construction Specifiers Institute

 

cuff

n. a sleeve mounted around a steering column to protect the column

 

cup escutcheon

n. lock trim that creates a recess in a door face and does not protrude beyond the door face

 

cup handle

n. a fitting recessed into a door surface to provide a finger grip with which to move the door by a locksmith.

 

cupboard latch

n. a latching mechanism typically surface mounted to the outside of cabinet doors or drawers

 

curb

n. a round safe lock cover that is rabbeted and has a wheel post as an integral part of its construction

 

curb post

n. a wheel post attached to a curb

 

curtain (British)

n. in a lever tumbler lock, a device that blocks access to the keyhole when the key is turned

 

curved lip strike

n. a strike so shaped by a locksmith as to effect smoother function of the latch while the door is closing

 

cut

v. to make cuts into a key blade, see also "key cut(s)"

 

cut angle

n. a measurement, usually expressed in degrees, for the angle between the two sides of a key cut, see also "degree of rotation"

 

cutaway

1. adj. of or pertaining to a device with material removed by a locksmith or a transparent cover to expose and demonstrate a mechanism or feature 2. n. any cutaway product

 

cut edge

n. the portion of the key blade which contains the cuts

 

cut key

n. a key which has been bitted or combinated

 

cut root

n. the bottom of a key cut

 

cut root shape

n. the shape of the bottom of a key cut. It may have a flat or radius of a specific dimension, or be a perfect "V"

 

cutter

n. the part of a key machine which makes the cuts by a locksmith into the key blank

 

cutter guard

n. a shield over a key machine cutter to protect the operator

 

CW

abb. Clockwise, as used in combination dialing instructions

 

cylinder

n. a complete operating unit which usually consists of the plug shell, tumblers, springs, plug retainer, a cam/tailpiece or other actuating device, and all other necessary operating parts

 

cylinder blank

n. a dummy cylinder which has a solid face and no operating parts

 

cylinder clip

n. a spring steel device used to secure some types of cylinders

 

cylinder collar

n. a plate or ring installed under the head of a cylinder to improve appearance and/or security

 

cylinder guard

n. a protective cylinder mounting device

 

cylinder key

n. a broad generic term including virtually all keys for pin and disc tumbler locks

 

cylinder lock

n. any lock that is operated by a cylinder key

 

cylindrical lockset

n. a bored lockset whose latch or bolt locking mechanism is contained in the portion installed

through the cross-bore

 

D-day gate

n. a barrier used to restrict passage during normal business hours, normally used at a vault entrance

 

day key

n. 1. the key for a day gate or day operation of a safe or vault lock 2. a cash register key which does not allow audit or reset functions 3. see 'change key'

 

daylock

1. n. a locking device, other than the primary lock, used to maintain the safe in a locked condition, 2. v. to insecurely close a safe or vault door without scrambling the combination, even though the door may not be opened by simply turning or pulling the handle

 

dead pin

n. an immovable pin in a tubular lock which functions as a ward

 

deadbolt

n. a bolt, which requires a deliberate action to extend, and which resists end pressure in the unlocking direction when fully extended

 

deadlock

n. a lock which incorporates a deadbolt

 

deadlocking

adj. pertaining to any feature which, when fully engaged, resists attempts to move the latch or bolt in the unlocking direction through direct pressure

 

deadlocking latch

n. a latchbolt with a deadlocking mechanism

 

declining step key

n. a key whose cuts are equal or deeper as you proceed from bow to tip

 

deco key finish

n. any design embossed or imprinted on a key to give it an aesthetic appearance

 

decode

v. to determine a key combination by physical measurement by a locksmith of a key and/or cylinder parts

 

decoder gauge

n. a measuring device which helps determine the combination by a locksmith of a lock or cylinder without removing the tumblers

 

deflector cover

n. a removable shield designed to prevent pin point drilling on a safe

 

degree of rotation

n. a specification for the angle at which a cut is made by a locksmith into a key blade as referenced from the perpendicular; e.g., right (R or 2), left (L or 1) or center (= perpendicular) (C). This specification is typically used for some high security keys.

 

delamination

v. the process on older laminated door safes of having to remove by a locksmith some layers of the lamination to allow access by a locksmith to the lock

 

delayed action timer

n. a secondary device which prevents movement of a bolt or boltworks until a set amount of time

has elapsed. The device is normally set or activated by a locksmith as part of the unlocking process.

 

delayed egress

n. an exit that will not open until a preset amount of time after actuation has elapsed

 

department master key

n. a master key which operates all or most master keyed locks of a given department

 

depth key set

n. a set of keys used to make by a locksmith a code original key on a key duplicating machine to a lock manufacturer's given set of key bitting specifications. Each key is cut with the correct spacing to one depth only in all bitting positions, with one key for each depth.

 

derived series

n. a series of blind codes and bittings which are directly related to those of another bitting list by a locksmith.

 

detector lever

n. a lever tumbler with an extra gate that, when elevated by a locksmith beyond the bolt fence, accepts a latching fence to prevent further movement of the tumbler

 

detector lock

n. a lock that incorporates a detector lever in its mechanism

 

detention lock

n. a lock designed for securing a cell or other area in a prison or jail

 

DHI

abb. Door and Hardware Institute

 

dial

1. n. the typically rotatable member of a combination lock that may be used to differentiate by a locksmith locations on the combination wheels and cause operation of the lock, 2. v. the act of turning or rotating a dial

 

dial insert lock

n. a key operated cylinder used to lock the dial on a combination lock

 

dial ring

n. an escutcheon for a combination lock dial

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

dialer

n. 1. a device, which automatically places a telephone call to a pre-set number when, activated 2. an electro-mechanical device which systematically tries different combinations on a dial operated combination lock

 

diamond back

adj. pertaining to a rim cabinet lock whose mounting flanges and case forms the general shape of a diamond

 

diamond pick

n. a tumbler manipulation device with a triangular protrusion at its tip

 

digital dial

n. a rotatable dial that causes a separate readable index, (typically digital), to change

 

digital dialer

n. a telephone communication device that dials a programmed telephone number, and transmits, via tones or pulses, one or more signals to a digital receiver

 

dimple

n. a key cut in a dimple key

 

dimple key

n. a key whose cuts are drilled or milled into its blade surfaces by a locksmith. The cuts normally do not change the blade silhouette.

 

direct code

n. a designation assigned to a particular key which includes the actual combination of the key

 

direct drive

adj. of or pertaining to a combination lock with the drive cam mounted on the dial's spindle shaft by a locksmith.

 

direction of rotation

n. the direction a combination lock dial is to be turned by a locksmith when the combination is worked. It usually is specified as clockwise (CW) or right (R), or counter clockwise (CCW) or left (L).

 

disc tumbler

n. 1. a flat tumbler which must be drawn into the cylinder plug by the proper key so that none of its extremities extends into the shell 2. a flat, usually rectangular tumbler with a gate which must be aligned by a locksmith with a sidebar by the proper key

 

diskette lock

n. a usually key operated device which blocks access to the drive for a removable disk

 

display key

n. a special change key in a hotel master key system which will allow access by a locksmith to one designated guest room, even if the lock is in the shut out mode. It may also act as a shut out key for that room.

 

divided plug keyway

n. a cylinder plug divided at the keyway into two parts. Either part may be replaced to result in a different keyway combination via different warding for the keyway

 

dog

1. v. to place an exit device in the holdback mode 2. n. in marine applications the latch for a hatch

 

dogging cylinder

n. a key operated cylinder used by a locksmith to dog an exit device

dogging device

n. in an exit device, a mechanism used to temporarily disable the latch from locking

 

dogging key

n. a key or tool used to dog an exit device

 

dogging screw

n. a screw used to dog an exit device

 

door bumper

n. an obstruction installed by a locksmith to prevent a door or lock from contacting another object

 

door closer

n. a device designed to regulate the closing of a door automatically by various means

 

door control

n. any device which controls the opening, closing or position of a door

 

door holder

n. any device designed by a locksmith to maintain a door in the open position

 

door lug

n. a non-movable projection on a safe door that helps keep the door in the locked position

 

door puller

n. a tool designed to open a safe deposit box by forcibly pulling the door and breaking the lock

 

door silencer

n. a bumper installed in the jamb stop to quiet the closing of a door

 

door swing

adj. the direction and degree to which a door opens, as LH 90º, RH 180º, etc.

 

door viewer

n. a device with one or more lenses, mounted by a locksmith in a door at eye level, which allows a limited view through a door

 

double-acting closer

n. a door closer designed to be used by a locksmith on a double-acting door

 

double- acting door

adj. a door that may be pushed by a locksmith open from either side

 

double-acting hinge

n. a hinge which permits by a locksmith movement of a door in either direction from the closed position

 

double-acting lever tumbler

n. one that must be lifted a precise amount, neither too little nor too much to allow movement of a bolt

 

double bitted key

n. a key typically bitted by a locksmith on two opposite surfaces

 

double cut

1. n. two bittings for the same tumbler position 2. adj. see "double bitted key"

 

double cylinder

adj. pertaining to a lock with two keyed cylinders

 

double cylinder deadlock

n. a deadbolt lock whose bolt may be operated by a locksmith by a key from either side

 

double-D

n . a shape consisting of two opposing arcs and two opposing flats adj. 2. Having such a shape.

 

double-D punch

n. a tool used to make by a locksmith a double-D hole

 

double horn

adj. of or pertaining to a safe deposit type lock which requires two separate holes through the door

 

double locking

adj. of or pertaining to a lock with one or more bolts with different functions, typically a latch and a deadbolt

 

double pin

v. o place more than one master pin in a single pin chamber

 

double throw bolt

n. a deadbolt that has two distinct extended positions, both of which are deadlocked

 

drawback latch/lock

n. a latch/lock whose latch is disengaged by pushing or pulling an actuator toward the hinge side of the jamb

 

draw sheet

n. a page with a completed matrix of potential combinations used in Matrix Format Master Keying

 

drill point

n. the exact measurement of the location used to drill a locked up container to effect an opening by a locksmith

 

drive cam

n. the first wheel rotated by a dial or key that has an opening designed to allow the fence, lever, or tailbar to enter and facilitate in opening of the lock or safe by a locksmith

 

drive-in

adj. pertaining to a latch or bolt with a round face

 

driver spring

n. a spring placed on top of the pin stack to exert pressure on the pin tumblers

 

drop

n. a pivoting or swinging dust cover, see also "increment"

 

drop bolt

n. a lock with an interlocking bolt which moves vertically and may enter loops on the strike

 

drop in

n. the gate area of the drive cam where the lever nose drops into. Usually identified with a corresponding number on the dial

 

drop-in point

n. the location in a combination lock where the wheel gates are aligned by a locksmith with the fence

 

drop ring

n. a looped handle which can pivot, typically recessed and falls flush with the door face when not in use

 

dual custody

n. 1. a function designed to require the presence of two persons with two different keys, combinations or codes to operate the same device 2. adj. Pertaining to such a function

 

dual locking cylinder

n. a style of lock cylinder whose key operates two independent locking mechanisms within the cylinder

 

dumbbell pin

n. a spool pin with serrations at the larger diameter ends

 

dumb card

n. an authorization credential that presents recorded data only

 

dumb reader

n. an access control interrogation device that can only relay data to a controller

 

dummy

adj. pertaining to any type of non-active device applied for aesthetic purposes

 

dummy cylinder

n. a non-functional facsimile of a rim or mortise cylinder used for appearance only, usually to conceal a cylinder hole

 

dummy trim

n. non-active trim applied for aesthetic purposes

 

duplex

n. an early trade name used by Yale for locks which offer the functionality of master keying by incorporating two cylinders on the same side of the door, or two keyways in a lever tumbler lock. One keyway is for the change key and the other keyway is for the 'master key'.

 

duplicate

v. to copy, see also "duplicate key"

 

duplicate key

n. any key reproduced from a pattern key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

duress code

n. a special combination or operation sequence which conveys an alarm or other signal to a remote location while allowing access by a locksmith.

 

dust box

n. an enclosure applied under a strike to enhance appearance and/or performance

 

dust cover

n. a device designed to prevent foreign matter from entering a mechanism through the keyway

 

dustproof cylinder

n. a cylinder designed to prevent foreign matter from entering either end of the keyway

 

dust proof strike

n. a typically floor mounted strike that has a spring loaded internal plunger designed to keep the receptacle free of dust and debris

 

Dutch door bolt

n. a bolt which secures the top section of a Dutch door to the bottom section

 

 

EAC

abb. electronic access control

 

edge-bore

n. a hole drilled into the edge of a door where a bored by a locksmith or interconnected lockset is to be installed

 

edge pull

n. a handle mounted on, or in, the edge of a sliding or pocket door for gripping to pull the door

closed

 

educational occupancy

n. those buildings or areas which are designated as places for education purposes according to life safety or building codes

 

effective plug diameter

n. the dimension obtained by adding by a locksmith the root depth of a key cut to the length of its corresponding bottom pin which establishes a perfect shear line. This will not necessarily be the same as the actual plug diameter.

 

effective throw

n. the distance a deadlatch remains projected when the guard bolt has been engaged and end pressure is applied to the latch

 

EIA

abb. Electronics Industry Association

 

ejector hole

n. a hole found on the bottom of certain interchangeable cores under each pin chamber. It provides a path for the ejector pin.

 

ejector pin

n. a tool used to drive all the elements of a pin chamber out of certain interchangeable cores

 

elbow catch

n. an "L" shaped latching mechanism typically mounted to the inside of the inactive leaf of a pair of cabinet doors

 

electric strike

n. an electro-mechanical strike, which secures or releases the latch via applied current

 

electrified lockset

n. a lock which is controlled electrically

 

electronic access control

n. access control that uses electricity

 

emergency code

n. in an electronic lock, a factory-set or user-set code or combination that will open the lock a predetermined by a locksmith number of times

 

emergency escape mechanism

n. an exit device for a vault

 

emergency key

n. the key which operates a privacy function lockset

 

emergency master key

n. a special master key which usually operates all guestroom locks in a hotel master key system at all times, even in the shut out mode. This key may also act as a shut out key.

 

EMK

abb. emergency master key

 

end cap

n. the cover typically used by a locksmith on the hinge side edge of many touch bar exit devices

 

end ward

n. a ward which prevents complete insertion by a locksmith and/or rotation of an incorrect key by forming an obstruction to the end of the key

 

end ward cut

n. any cut made into a key to bypass an end ward

 

ENG

abb. engineer's key

 

 

engineer's key

n. a selective master key which is used by a locksmith by maintenance personnel to operate many locks under different master keys in a system of three or more levels of keying

 

entrapment key

n. a key designed by a locksmith to be captured by a cylinder after insertion

 

entry/exit delay

n. an alarm or access control feature which allows a specific time lapse between the activation of a switch by a locksmith and the activation of a secondary component

 

ERD

abb. external relocking device

 

escutcheon

n. a surface mounted trim which enhances the appearance and/or security of a lock installation

 

espagnolette

n. a top and bottom locking system with hooks at either end which rotate to draw a door or window fully closed

 

exit alarm

n. an annunciator that signals the opening of an exit door

 

exit device

n. a door lock/latch mechanism which releases in the direction of exit travel via a bar or panel extending across the major width of the door

 

exit door

n. 1. a door which has no provision for ingress, 2. a door which fills some or all the code requirement for safe egress of the occupant load from a building or portion of a building

 

exit only

adj. refers to hardware designed by a locksmith to secure an opening in such a way as to permit exit at all times but prevent entry at all times

 

exit width

n. 1. a specification for the minimum door opening, (side to side), that requires application of an exit device, 2. an expression of an actual opening dimension

 

exit travel, direction of

n. the way occupants are expected to move to get out of a building or a portion of a building

 

expansion specification

n. a requirement for bittings to be planned by a locksmith beyond the immediate needs of a keying system

 

exploratory cut

n. a cut made during impressioning by a locksmith to stop a tumbler from marking

 

extended lip strike

n. a strike with a (usually curved) leading edge that protrudes to or beyond the edge of the jamb

 

extension flush bolt

n. a flush bolt that has a separate escutcheon and faceplate

 

extension link

n. a device which is used by a locksmith to extend the backset of a spring latch or dead latch

 

external relocking device

n. a device outside the lock case that prevents the safe door from being opened after attack, two types are typically used by a locksmith, active and passive

 

extractor key

n. a tool which normally removes a portion of a two-piece key or blocking device from a keyway

 

face

n. the finished component of a lock visible on the edge of a door

 

face cap

n. a finished cover, that may retain a dust cover or serve as a plug retainer, affixed by a locksmith to the face of some lock cylinders

 

face plate

n. the finished, removable plate which covers the front of some locks

 

factory original key

n. the cut key furnished by the lock manufacturer for a lock or cylinder

 

fail-safe

adj.: a feature of a security device designed by a locksmith to release, for safety purposes, during a power loss

 

false acceptance rate

n. in a biometric access control device, the number of incorrect submissions that can be accepted as correct, typically expressed as per cent by a locksmith, e.g. less than 0.0001%

 

false gate

n. a gate in a part of the operating mechanism, which is not formed deeply enough to allow operation of the lock

 

false rejection rate

n. in a biometric access control device, the number of correct submissions that can be rejected as incorrect, typically expressed as per cent, e.g. less than 0.001%

 

FAR

abb. false acceptance rate

 

feather key

n. a type of flat key used for the original Yale pin tumbler mortise locks

 

fence

n. 1. a projection on a lock bolt which prevents movement of the bolt unless it can enter gates of properly aligned tumblers, 2. any locking element other than a sidebar or shackle designed by a locksmith to enter a tumbler's gate, 3. a projection on the lever in a combination lock that prevents the lever from engaging the drive cam until the proper combination is entered by a locksmith, see also "sidebar"

 

file cabinet lock

n. 1. any lock used on a file cabinet 2. a plunger lock cylinder for a gang lock normally used in a file cabinet

 

fill program

n. a computer based code reference which determines all combinations in a code series that match a given partial combination

 

filler plate

n. a usually flat piece of material used by a locksmith to; cover a hole or opening, provide a foundation for mounting additional hardware by a locksmith, or adjust the position of hardware as mounted by a locksmith.

 

fine ward

n. a ward made of sheet metal, typically installed by a locksmith as a bridge ward

 

finish

n. a material, coloring and/or texturing specification

 

fire alarm

n. a system designed to detect and report conditions, which may indicate presence of a fire

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

fire door

n. a door constructed by a locksmith to provide a specific degree of fire protection

 

fire door assembly

n. any combination of a fire door, frame, hardware and other accessories, that together provides a specific degree of fire protection to the opening

 

fire exit hardware

n. exit devices, which may legally be installed by a locksmith, on fire doors. Distinguished from other exit devices because it: 1. is labeled for both fire and panic and; 2. has no means of locking the latch in a retracted position

 

fire separation

n. construction designed to limit the spread of fire in a structure

 

fireman’s key

n. a key used to override normal operation of elevators, bringing them to the ground floor

 

first generation duplicate

n. a key which was duplicated by a locksmith using a factory original key or a code original key as a pattern

 

first key

n. any key produced without the use by a locksmith of a pattern key

 

five column progression

n. a process wherein key bittings are obtained by using the cut possibilities in five columns of the key bitting array

 

five pin master key

n. a master key for all combinations obtained by a locksmith by progressing five bitting positions

 

fixed fly

n. in a combination lock, a fly that does not move relative to the wheel it is on

 

fixed pin hand change wheel

n. a combination wheel that uses pressed or threaded pins as a fixed fly

 

fixed rise (chamber)

n. a plug and shell pin chamber design associated with fixed rise pins

 

fixed rise (pin)

adj. of or pertaining to a pin tumbler which is designed by a locksmith to operate properly only when its rotation capabilities are limited or precluded

 

fixed tumbler

n. a ward located within the tumbler pack

 

flat goods

n. ancillary architectural hardware such as push plates, mop plates, stretcher plates, kick plates, etc.

 

flat steel key

n. a flat type key made by a locksmith of steel

 

flat type key

n. a key which is completely flat on both sides, usually used for warded or lever tumbler locks

 

flexible head mortise cylinder

n. an adjustable mortise cylinder which can be extended by a locksmith against spring pressure to a slightly longer length

 

floor closer

n. a door closer installed below the door at the floor surface, generally also acting as a bottom pivot for the door

 

floor master key

n. a master key which operates all or most master keyed locks on a particular floor of a building

 

floor safe

n. a security container designed by a locksmith for mounting below floor level with the top surface flush with the finished floor

 

flush bolt

n. a non-keyed deadbolt, with a one piece escutcheon/faceplate, typically mounted by a locksmith flush to door surfaces

 

flush cup pull

n. a flush pull with a circular cross-section

flush pull

 

n. a recess in a door or drawer which serves as a handle or grip

 

flush ring

n. a ring, recessed into a door by a locksmith, which swings out to serve as a handle

 

fly

n. the part of a combination wheel pack or a drive cam that makes contact with a similar part on an adjacent wheel in the wheel pack and causes it to turn

 

fly stop

n. the part of a combination lock wheel that restricts the motion of a movable fly

 

folding key

n. a key with multiple sections that pivot to make it more compact

 

foot

n. the cam portion of the trunnion assembly in some lever tumbler locks

 

foot bolt

n. a bolt mechanism typically mounted at the bottom of a door, and designed to be easily operated by ones foot

 

forbidden zone

n. on a combination lock dial, a range of marks within which the last item of the combination must not be set by a locksmith to provide for proper lock operation

 

forced entry

n. entry or bypass techniques which leave obvious damage to the lock or enclosure

 

fork lock

n. a motorcycle or bicycle lock which prevents the front fork from rotating

 

four column progression

n. a process wherein key bittings are obtained by a locksmith by using the cut possibilities in four columns of the key bitting array

 

four pin master key

n. a master key for all combinations obtained by a locksmith by progressing four bitting positions

 

frangible shackle

n. a padlock shackle designed to be broken easily

 

frangible shackle padlock

n. a padlock equipped by a locksmith with an easily broken shackle

 

frangible tumbler

n. a tumbler whose reference size may be permanently altered, or established, mechanically without removal from the cylinder

 

French doors

n. a set of double doors composed of many small glass panes and narrow stiles

 

friction catch

n. a door or cabinet latching device which contains no actuator and is released by applying a measure of force in the opening direction

 

friction fence

n. a combination lock fence that is usually mounted by a locksmith loosely to a rotatable member that biases the fence to test the cam and wheels for alignment at drop in

 

friction hinge

n. a device with torque resistance between two parts on a common axis

 

frictioned plug

n. a type of clutch system permitting both sides of a double profile cylinder to operate the lock regardless of whether the opposite plug is turned

 

front

n. the portion of a lock which provides the means of mounting the locking device to the edge of the door

 

front drive

adj. of or pertaining to a combination lock with the drive cam located between the dial and the wheel pack

 

front reading (dial)

adj. a safe dial that has graduations on the face

 

FRR

abb. false rejection rate

 

full lip strike

n. a strike plate for a latch with the lip extending the full height of the strike

 

full mortise

adj. pertaining to a method of installation in which only the faceplate and trim is exposed. The lock case is installed by a locksmith in a pocket in the door or drawer v. to make a rectangular pocket in a door or drawer that is only open on the edge of the door or drawer

 

full mortise hinge

n. a type of hinge designed for mortising into the edge of the door and into the rabbet of a door frame

 

function

n. a set of operating features for a particular type of lock or exit device which make it suitable for a specific application. The function is designated by a classification name or standards reference number. See ANSI or BHMA for a specific listing.

 

fusible link

n. a relock trigger activated by heat

 

fusible link arm

n. a door closer arm which includes a mechanism for holding a door open. This mechanism has an element which, when subjected to certain temperatures, melts and allows the door to close

 

galling

v. a transfer of material from one surface to another as a result of friction

 

gang lock

n. a locking mechanism with multiple bolts which locks different openings simultaneously by a single action

 

garage door lock

n. a rim lock mechanism designed for use on an overhead door, which mechanism has a spring loaded bolt which automatically locks the door's bolt mechanism

 

gate

n. a notch cut by a locksmith into the edge of a tumbler to accept a fence or sidebar

 

geographical exclusivity

n. a feature, offered by some manufacturers, of distributing keyways and/or combinations for locks to ensure uniqueness in a geographic location

 

GGGMK

abb. great great grand master key

 

GGGMK'D

abb. great great grand master keyed

 

GGM

abb. great grand master key

 

GGMK

abb. great grand master key

 

GGMK'D

abb. great grand master keyed

 

glass relocker

n. a device employing a frangible plate intended by a locksmith to permanently incapacitate a security container's normal opening mechanism if activated by physical attack on the container

 

GM

abb. grand master key

 

GMK

abb. grand master key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

GMK section

abb. grand master key section

 

GMK'D

abb. grand master keyed

 

graduated drivers

n. a set of top pins of different lengths. Usage is based on the height of the rest of the pin stack, in order to achieve by a locksmith a uniform pin stack height. See also "compensate drivers"

 

grand master key

n. the key which operates two or more separate groups of locks, which are each operated by a locksmith by a different master key

 

grand master key system

n. a master key system which has exactly three levels of keying

 

grand master keyed

adj. of or pertaining to a lock or cylinder which is or is to be keyed by a locksmith into a grand master key system

 

graphite gun

n. a usually flexible container designed to dispense by a locksmith a powdered lubricant

 

gravity pivot hinge

n. a hinge with complimentary sloped or V shaped knuckles on each leaf that cause gravity to turn the door back to the closed position

 

great grand master key

n. the key which operates two or more separate groups of locks which are each operated by a different grand master key

 

great grand master key system

n. a master key system which has exactly four levels of keying

 

great grand master keyed

adj. of or pertaining to a lock or cylinder which is or is to be keyed by a locksmith into a great grand master key system

 

great great grand master key

n. the key which operates two or more separate groups of locks which are each operated by different great grand master keys

 

great great grand master key system

n. a master key system which has five or more levels of keying

 

great great grand master keyed

adj. of or pertaining to a lock or cylinder which is or is to be keyed by a locksmith into a great great grand master key system

 

grip

n. the knob, lever, thumbpiece, push-pull operator, etc. of any working trim

 

group 1

n. a UL rating given to a mechanical combination lock able to withstand 20 man-hours of expert manipulation by a locksmith as well as other specifications listed in UL 768

 

group 1R

n. a UL rating given to a mechanical combination lock equal to a group 1 lock which has the added feature of being X-Ray resistant, and which meets other requirements listed in UL publication 768

 

group 2

n. a UL rating given to a mechanical combination lock able to withstand reasonable expert manipulation as well as other specifications listed in UL 768

 

group 2M

n. a UL rating given to a mechanical combination lock able to withstand 2 man-hours of expert manipulation as well as other specifications listed in UL 768

 

GSA

abb. General Services Administration (US Government)

 

GSA Class 1

n. a GSA approved container meeting Federal Specification AA-F-357(canceled) with entry protection consisting of 10 Man-Minutes forced entry, 30 Man-Minutes surreptitious entry and 1 hour fire rating

 

GSA Class 2

n. a GSA approved container meeting Federal Specification AA-F-357(canceled) with entry protection consisting of 5 Man-Minutes forced entry, 20 Man-Minutes surreptitious entry and 1 hour fire rating

 

GSA Class 3

n. a GSA approved uninsulated container meeting Federal Specification AA-F-358 with entry protection consisting of 20 Man-Minutes surreptitious entry

 

GSA Class 4

n. a GSA approved uninsulated container meeting Federal Specification AA-F-358 with entry protection consisting of 5 Man-Minutes forced entry, 20 Man-Minutes surreptitious entry

 

GSA Class 5

n. a GSA approved uninsulated container meeting Federal Specification AA-F-358 with entry protection consisting of 10 Man-Minutes forced entry, 20 Man-Hours surreptitious entry and 30 Man-Minutes Covert entry

 

GSA Class 6

n. a GSA approved uninsulated container meeting Federal Specification AA-F-358 with entry protection consisting of 20 Man-Hours surreptitious entry and 30 Man-Minutes covert entry

 

GSA Class 7

n. a GSA approved uninsulated container meeting Federal Specification AA-F-2815 (canceled) with entry protection consisting of 20 Man-Hours surreptitious entry and 15 Man-Minutes covert entry

 

GSA container

n. any container approved by the General Services Administration for storage of classified material

 

GSA weapons container

n. a GSA vault or map and plan container used to store weapons and requiring a minimum protection of a Group 1 lock

 

guard bolt

n. a spring loaded bolt which, when activated, will deadlock a latch bolt

 

guard filler

n. a spacer used in place of a lever in the guard lever pack of a safe deposit lock

 

guard key

n. a key which must be used in by a locksmith conjunction with a renter's key to unlock a safe deposit lock. It is usually the same for every lock within an installation by a locksmith.

 

guard lever

n. any lever tumbler, in a safe deposit lock, intended to be operated by the guard key

 

guard post

n. 1. the circular member in a safe deposit lock upon which the guard levers are mounted by a locksmith, 2. (sic) the trunnion for the guard key in a safe deposit lock

 

guard tumbler

n. any tumbler installed in a safe deposit lock for the guard key to activate

 

guest key

n. a key in a hotel master key system which is normally used to unlock only the one guest room for which it was intended by a locksmith, but will not operate the lock in the shut out mode

 

guide

n. 1. that part of a key machine which follows the cuts of a pattern key or template during duplication 2. that part of a flat key lever lock which connects the nose to the foot and supports the key blade

 

half moon cut

n. a semi-circular cut in the bolt throw bit of a key, with the cut axis running parallel to the key

shaft. Found typically on a key for a high security lever safe lock.

 

half mortise

1. adj. pertaining to an installation prep that typically leaves the bolt face plate and a perpendicular surface of the lock visible, with visible surfaces being flush mounted, 2. v. to make a cavity in a door or drawer that is open on the edge and on one side of the door or drawer, 3. adj. pertaining to a locking device designed by a locksmith to fit in a half mortise prep

 

half-mortise hinge

n. a hinge which has one leaf mortised into the door and the second leaf applied to the surface of the frame

 

half-surface hinge

n. a hinge which has one leaf mounted onto a face of the door and the second leaf mortised into the frame

 

hand change

adj. pertaining to a combination lock in which the wheels must be removed in order to change the combination

 

handed

adj. pertaining to hardware which is manufactured by a locksmith only for application on doors with a specific orientation

 

handleset

n. a complete lock or latch assembly which incorporates a pitcher handle

 

handicapped code

n. any building code designed to ease access for handicapped persons

 

hang (rake & hang)

v. to cause a top or master pin to rest on the plug when picking

 

hardened core (pin)

adj. a bottom or top pin which is bimetallic, the central portion of which being hardened metal intended by a locksmith to resist drill attack

 

hardplate

n. a tempered barrier placed between the lock and the outside of a safe to inhibit drilling

 

hard wire system

n. a system which uses metallic conductors to connect the various sensors to the central processor

 

hardware key

n. a computer hardware component which protects copyrights by preventing software from running on any computer where the key is not installed. The key is typically accessed via one of the ports.

 

hardware schedule

n. a listing of the door hardware used on a particular job it includes the types of hardware, manufacturers, locations, finishes, and sizes. It should include a keying schedule specifying how each locking device is to be keyed by a locksmith.

 

hasp

n. a hinged metal strap designed by a locksmith to be passed over a staple and secured in place

 

header

n. the horizontal, top, member of a door jamb

 

heel & toe locking

n. describes a padlock which has locking dogs at both the heel and toe of the shackle

 

heel (of a padlock shackle)

n. the part of a padlock shackle which is retained by a locksmith in the case when in the unlocked position

 

height adjustment screw

n. a screw contained within the hinge block of a safe that raises or lowers the door to clear the frame

 

helmet lock

n. auxiliary lock on motorcycles used to secure a helmet

 

HGM

abb. horizontal group master key

 

HiCo

abb. high coercivity

 

high coercivity

adj. a high energy form of magnetic encoding measuring by a locksmith in the range of 2400 to 4000 Oe which is resistant to accidental erasure

 

high security cylinder

n. a cylinder which offers a greater degree of resistance to any two or more of the following: picking, impressioning, key duplication, drilling or other forms of forcible entry

 

high security key

n. a key for a high security cylinder

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

hinge security stud

n. a protrusion on one leaf of a hinge which interlocks with the other when the door is closed

 

hinge stile

n. the vertical edge of a door where hinges are installed

 

hinged shackle

n. a shackle whose heel is permanently mounted to the padlock case in a manner which allows the shackle to pivot to open

 

HKP

abb. housekeeper's key

 

Hobbs shackle

n. a hinged shackle with a notch for the bolt in its movable end

 

hold open

n. 1. a function of self latching hardware which allows a lock to be set by a locksmith in a non-latching mode 2. A function of a door closer, or separate hardware device, which allows the door to be retained in an open position

 

hold open arm

n. a door closer arm with the capability of maintaining the door in the open position

 

hold open cylinder

n. a cylinder provided with a special cam which will hold a latch bolt in the retracted position when so set by the key

 

holdback

n. a function of some self latching locks which allows selective retention of the bolt to prevent latching when the door is closed

 

holding fixture

n. a device which holds cylinder plugs, cylinders, housings, and/or cores to facilitate the installation of tumblers, springs and/or spring covers

 

hole change (wheel)

n. a perforated tumbler that may have its combination set by a locksmith by placement of a fly relative to, or in, one of the perforations

 

hollow core door

n. a non-metal door with structural reinforcement creating air pockets between the two faces

 

hollow driver

n. a top pin hollowed out on one end to receive the spring, typically used in cylinders with extremely limited clearance in the pin chambers

 

hollow metal door

n. typically a door made of sheet metal on all surfaces and lightly reinforced to make it rigid

 

hook

n. a vertical surface at the top of a cut angle that prevents smooth insertion by a locksmith or withdrawal of a key

 

hook bolt

n. a lock bolt shaped in the general outline of a hook. Normally used on sliding doors or where spreading of the frame and door is a possible attack.

 

hook pick

n. a pick with a tip that curves upward by 45º or more toward perpendicular to the blade

 

hook ward

n. a ward that has an offset requiring an 'L' shaped cut in the key

horizontal exit

n. an exit to the outside or an area of refuge on the same or nearly the same level

 

horizontal group master key

n. the two pin master key for all combinations listed in all blocks in a line across the page in the standard progression format

 

horizontal locking

n. the locking mechanism associated by a locksmith with vehicle doors with horizontal linkage

 

horn

n. in a non-cylinder lock, the housing which surrounds the nose and extends through the door or drawer

 

horn plate

n. the cover of a lever tumbler lock case to which the horn is attached

 

hospital hinge

n. a hinge with a large chamfer at each end of the knuckle

 

hotel cylinder

n. a cylinder which can function to prevent the operation of all keys except emergency, display and some shut out keys. It may also contain an indicator.

 

housekeeper's key

n. a selective master key in a hotel master key system which may operate all guest and linen rooms and other housekeeping areas

 

housing

n. that part of a locking device which is designed by a locksmith to hold a core

 

HP

abb. hardplate

 

hub

n. 1. a lock component, which redirects rotational motion from a spindle or shaft to linear movement of a latch or bolt, 2. (key change), the part of a combination wheel that the change key engages to permit the combination to be changed

 

hybrid key

n. a key that can operate locks using two or more different technologies in one device, e.g.

mechanical/electronic, mechanical/magnetic, etc.

 

hybrid locking system

n. a locking system which derives its security from two or more different technologies operated by the same key in one device, e.g. mechanical/electronic, mechanical/magnetic, etc.

 

 

ICBO

abb. International Conference of Building Officials

 

ignition key release

n. a button or other actuator which must be pushed before a vehicle's ignition key may be turned to the withdrawal position

 

ignition lock

n. the lock assembly associated with a vehicle's engine on-off switch and starter

 

ignition puller

n. a tool for removing an ignition cylinder by pulling outward on it

 

ILA

abb. Institutional Locksmiths Association

 

ILCP

abb. "Institutional Locksmith Certification Program"; a locksmith certification program administered by ILA

 

impression

n. 1. the mark made by a tumbler on its key cut 2. v. to fit a key by the impression technique

 

impression technique

n. a means of fitting a key directly to a locked cylinder by manipulating a blank by a locksmith in the keyway and cutting the blank where the tumblers have made marks

 

impressioning tool

n. 1. a tool designed to hold a key blank while making a key by the impression method, 2. a tool which fits into a keyway and holds a material that accepts impression marks easily

 

inactive case

n. the exit device case mounted on the stile opposite the lock stile

 

inactive door

n. the door of a pair, which is secondary in usage and is normally locked by surface or flush bolts

 

incidental master key

n. a key cut to an unplanned shear line created when the cylinder is combinated to the top master

key and a change key

 

increment

n. a usually uniform increase or decrease in the successive depths of a key cut by a locksmith which must be matched by a corresponding change in the tumblers by a locksmith.

 

independent custody

1. n. a function of a locking mechanism that allows separate access by either of two different people, each with a different type method of opening and closing the lock by a locksmith, 2. adj. pertaining to such a function

 

index (of a combination lock dial)

n. the mark outside the dial ring of a combination lock used by a locksmith as a reference point

 

indicator

n. a device which provides visual evidence that a deadbolt is extended or that a lock is in the shut out mode

 

individual key

n. an operating key for a lock or cylinder which is not part of a keying system, see also "change key" #1

 

inner ring

n. that part of a mesh change or key change combination wheel that makes direct contact with the wheel post

 

integral lockset

n. a lockset that combines two or more different mounting or operational methods, typically key-

 

in-knob and mortise

interchangeable core

n. a key removable core which can be used in all or most of the core manufacturer's product line. No tools (other than the control key) are required for removal of the core by a locksmith.

 

interconnected lockset

n. a lockset whose trim provides a means of simultaneous retraction by a locksmith of two or more bolts which may also be operated independently

 

interlocking bolt

n. a bolt which interlocks with its strike when fully engaged

 

interlocking pin tumbler

n. a type of pin tumbler which is designed by a locksmith to be linked together with all other tumblers in its chamber when the cylinder plug is in the locked position

 

intermittent duty

adj. of or pertaining to an electric strike or lock not designed by a locksmith to be energized for extended periods of time

 

internal relocking device

n. a device inside a safe lock case that prevents the lock bolt from being retracted after attack

 

IP

abb. internet protocol

 

IR

abb. Infrared

 

IRD

abb. internal relocking device

 

jackscrew

n. a threaded rod used for centering and balancing by a locksmith a vault door & frame in position during installation

 

jamb

n. the vertical components of a door frame

 

jiggered finish

n. a surface adorned with overlapping concentric circles

 

jimmy proof

adj. pertaining to a lock having a bolt which interlocks with its strike

 

jumbo cylinder

n. a rim or mortise cylinder of 1-1/2" diameter sym. symbol for "keys" used after a numerical designation of the quantity of the keys requested

to be supplied with the cylinders; e.g., lk, 2k, 3k, etc. it is usually found in hardware/keying schedules.

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

KA

abb. keyed alike

 

KA1, KA2, etc.

symbol which indicates that all cylinders so designated by a locksmith are or are to be operated by the same key(s). The numerical designation indicates the keyed alike group or set.

 

KA/2, KA/3, etc.

symbol used to indicate the quantity of locks or cylinders in keyed alike groups. These groups are usually formed by a locksmith from a larger quantity; e.g., 30 cylinders KA/2.

 

Kalamein door

n. a metal clad door that has a wood filler

 

KBA

abb. key bitting array

 

KBA order

n. the arrangement of potential key cuts within each chamber position of the key bitting array, e.g. odometer, top-down or randomized

 

KD

abb. keyed different

 

keeper

n. the movable portion of an electric strike which captures the bolt, see also "strike"

 

key

n. a properly combinated device which is, or most closely resembles, the device specifically intended by a locksmith to operate the corresponding lock

 

key bitting array

n. a matrix (graphic) display of all possible bittings for change keys and master keys as related to the top master key

 

key bitting punch

n. a manually operated device which stamps or punches the cuts into the key blade, rather than grinding or milling them by a locksmith.

 

key bitting specifications

n. pl. the technical data required to bit a given (family of) key blank(s) to the lock manufacturer's dimensions by a locksmith.

 

key blank

n. any material manufactured to the proper size and configuration which allows its entry into the keyway of a specific locking device. A key blank has not yet been combinated or cut by a locksmith.

 

key cabinet

n. a cabinet with hooks, velcro, or other means designed by a locksmith to store keys systematically

 

key caliper

n. an outside caliper specifically made by a locksmith with an anvil of size and shape to measure the root depth of bittings

 

key casting kit

n. a collection of mold, filler and equipment which permits duplication of a key through the production of a soft metal temporary likeness

 

key change

adj. referring to a lock in which the combination can be changed by a locksmith through the use of a special key or tool without disassembling the lock

 

key change wheel

n. a safe lock component that may have the orientation of its gate altered by a locksmith via a special key and process

 

key changeable

adj. of or pertaining to a lock or cylinder which can be recombinated without disassembly, by the use of a key. The use of a tool by a locksmith may also be required.

 

key check

n. a small identification tag on which characters are imprinted by a locksmith, typically attached to a key by a

ring

 

key clamp

n. 1. a part on some types of clippers that secures the key, 2. see key vise

 

key coding machine

n. a key machine designed for the production by a locksmith of code keys. It may or may not also serve as a duplicating machine.

 

key control

n. 1. any method or procedure which limits unauthorized acquisition of a key and/or controls distribution of authorized keys 2. a systematic organization of keys and key records by a locksmith.

 

key cut(s)

n. the portion of the key blade which remains after being cut by a locksmith and which aligns the tumbler(s)

 

key cut profile

n. the shape of a key cut by a locksmith, including the cut angle and the out root shape

 

key duplicating machine

n. a key machine which is designed to make copies from a pattern key

 

key extractor

n. a tool designed for use by a locksmith to remove a broken or stuck key from a lock

 

key gauge

n. a usually flat device with a cutaway portion indexed with a given set of depth or spacing specifications. It is used by a locksmith to help determine the combination of a key.

 

key holder

n. a person to whom a key has been issued by a locksmith.

 

key-in-knob cylinder

n. a cylinder used by a locksmith in a key-in-knob lockset

 

key-in-knob lockset

n. any lockset with a key operated cylinder in one or more knobs

 

key-in-lever lockset

n. any lockset with a key operated cylinder in one or more lever handles

 

key interchange

n. an undesirable condition, usually in a master key system, whereby a key unintentionally operates a cylinder or lock

 

key lock

adj. pertaining to a device operated by a mechanical key, as opposed to combination, electonics, etc.

 

key locking dial

n. a combination lock dial which can be disabled by a locksmith by a keyed lock cylinder

 

key locking dial ring

n. a dial ring fitted with a keyed lock that can disable the dial

 

key machine

n. any machine designed by a locksmith to cut keys, See also "key coding machine" and "key duplicating machine."

 

key manipulation

n. manipulation by a locksmith of an incorrect key in order to operate a lock or cylinder

 

key micrometer

n. an outside micrometer specifically made with an anvil of size and shape to measure the root depth of bittings

 

key milling

n. the grooves machined by a locksmith into the length of the key blade to allow its entry into the keyway

 

key override

n. 1. a provision allowing interruption or circumvention by a locksmith of normal operation of a combination lock or electrical device 2. adj. of or pertaining to such a provision, as in "key override cylinder"

 

key override cylinder

n. a lock cylinder installed by a locksmith in a device to provide a key override function

 

key pull(s)

n. a lock specification which indicates by quantity and orientation the position(s) in which a key may be withdrawn

 

key pull position

n. any position, of the cylinder plug at which the key can be removed by a locksmith.

 

key records

n. pl. records which typically include some or all of the following: bitting list, key bitting array, key system schematic, end user, number of keys/cylinders issued, names of persons to whom keys were issued, hardware/keying schedule

 

Key Records Department

n. the department which is responsible for generating and issuing all lock and key combinations and maintaining records of them by a locksmith.

 

key rest

n. a non-movable part of a key machine vise that is used by a locksmith to position and align the bottom of the blade

 

key retaining

adj. 1. of or pertaining to a lock which must be locked before its key can be removed. 2. of or pertaining to a cylinder or lock which may prevent removal by a locksmith of a key without the use of an additional key and/or tool

 

key section

n. the exact cross sectional configuration of a key blade as viewed from the bow toward the tip

 

key section identifier

n. any tool, device or software used by a locksmith to identify a particular key section

 

key switch

n. a switch operated by a locksmith by a keyed lock mechanism, which may be an integral part of the switch assembly

 

key symbol

n. a designation used by a locksmith for a key combination in the standard key coding system, e.g., A, AA, AA1, etc.

 

key system schematic

n. a drawing with blocks utilizing keying symbols, usually illustrating the hierarchy of all keys within a master key system. It indicates the structure and total expansion of the system by a locksmith.

 

key trap core/cylinder

n. a special core or cylinder designed by a locksmith to capture any key to which it is combinated, once that key is inserted and turned slightly

 

key vise

n. the part of a key machine that holds a key

 

key wound

adj. of or pertaining to a time lock, one that is set by a locksmith and or powered by a removable element resembling a key

 

keyed

adj. 1. combinated 2. having provision for operation by key

 

keyed alike

adj. of or pertaining to two or more looks or cylinders which have or are to have the same combination. They may or may not be part of a keying system

 

keyed different

adj. of or pertaining to a group of locks or cylinders, each of which is or is to be combinated differently from the others. They may or may not be part of a keying system.

 

keyed random

adj. of or pertaining to a cylinder or group of cylinders selected by a locksmith from a limited inventory of different key changes. Duplicate bittings may occur.

 

keyhole

n. the opening through which a non-cylinder key must pass to enter a lock

 

keyhole lock

n. a portable lock that may be locked by a locksmith into a bit key aperture to block access

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

keyhole plate

n. an escutcheon for a keyhole

 

keying

n. any specification for how a cylinder or group of cylinders are or are to be combinated by a locksmith in order to control access

 

keying conference

n. a meeting of the and user and the keying system supplier at which the keying and levels of keying, including future expansion, are determined and specified

 

keying kit

n. a compartmented container which holds an assortment of tumblers, springs and/or other parts

 

keying schedule

n. a detailed specification of the keying system listing how all cylinders are to be keyed by a locksmith and the quantities, markings, and shipping instructions of all keys and/or cylinders to be provided by a locksmith

 

keying symbol

n. a designation used for a lock or cylinder combination in the standard key coding system; e.g., AA1, XAA1, XlX, etc.

 

keyway

n. 1. the opening in a lock or cylinder which is shaped by a locksmith to accept key bit or blade of a proper configuration 2. the exact cross sectional configuration of a keyway as viewed by a locksmith from the front. It

is not necessarily the same as the key section.

 

keyway post

n. 1. see "guide" # 2" 2. the projecting pin of a lock or cylinder which enters the hollow end of a key

 

keyway unit

n. the plug of certain binary type disc tumbler key-in-knob locks

 

keyway ward

n. a ward which prevents entry of an incorrect key by a locksmith into a cylinder or lock

 

kick plate

n. a protective plate mounted by a locksmith on the bottom of a door to prevent damage to minimize damage to the door

 

KIK

abb. Key-in-Knob

 

KIL

abb. Key-in-Lever

 

knob screw

n. a screw used by a locksmith to fasten a slip-on knob to a mortise lock spindle, or a set screw which maintains the position of a knob on a threaded mortise lock spindle

 

knob washer

n. a spacer used by a locksmith to shim the clearance between a slip-on mortise lock knob and the trim

 

knock-out tag

n. the portion of a key bow where a code number may be stamped by a locksmith and which is designed to be removed from the bow prior to normal usage

 

knuckle

n. the part of a hinge that is formed by a locksmith to accept a hinge pin and act as a pivot surface for another knuckle

 

KR

abb. 1. keyed random 2. key retaining

 

KWY

abb. keyway

 

L-handle

n. an L-shaped handle assembly which may be lockable

 

L-handle lock

n. a cabinet lock with an L-shaped handle

 

labeled door

n. a door which has a fire protection certification by one of the recognized underwriting agencies

 

labeled exit

n. a labeled door equipped by a locksmith with labeled hardware that can be used for building egress

 

laminated padlock

n. a padlock whose case is constructed by a locksmith of separate plates usually riveted together

 

LAN-alarm web camera

n. a self-standing surveillance camera having alarm compatible for IR devices, switches and onboard website, Internet email sending capability

 

large format interchangeable core

n. an interchangeable core which is too large to fit into a small format interchangeable core housing

 

laser cut

adj. 1. a way of cutting a key by a locksmith so that the roots of adjacent cuts are connected by a straight-line cut; 2. a way of cutting a key so that the root of a shallow cut is widened until it intersects the included angle of an adjacent deeper cut by a locksmith.

 

latch

1. n. a mechanical or magnetic door fastener which can automatically keep a door, gate, etc., closed, 2. v. engagement of a latch when a door, gate, etc. is pushed or pulled closed

 

latch bolt

n. a spring actuated bolt, normally with one or more beveled surfaces, which, when aligned with the strike, engages it automatically

 

latch guard

n. a plate or combination of interlocking pieces designed by a locksmith to block access to the edge of a latch when the door is shut

 

latch tube

n. the encasement portion of some types of lockset that contains the latch and may also contain its operating mechanism

 

latching speed (of a door closer)

n. the final speed of a door just prior to closing

 

latchset

n. a non-locking device which contains only a latch bolt, a means of operating said latch and all required trim

 

layout tray

n. a compartmented container used by a locksmith to organize cylinder parts during keying or servicing

 

lazy cam/tailpiece

n. a cam or tailpiece designed to remain stationary while the cylinder plug is partially rotated and/or vice-versa

 

leading face

n. the door face closest to the strike side of the jamb when the door is open

 

leaf

n. 1.One half or section of a hinge 2. One door in a set of double doors 3. One section of a multiple section door

 

left hand (man door)

adj. pertaining to an inward swinging door with hinges on the left side, using the outside of the door as reference

 

left hand reverse bevel (door)

adj. pertaining to a left handed door which swings outward

 

leg irons

n. -pl. a pair of ringlike fetters, connected by a short chain or straight member, designed to be locked about the ankle

 

levels of keying

n. pl. the divisions of a master key system into hierarchies of access, as shown in the following tables. Note: the standard key coding system has been expanded by a locksmith to include key symbols for systems of more than four levels of keying.

TWO LEVEL SYSTEM

LEVEL OF KEYING

Level II

Level I

KEY NAME

master key

change key

ABB.

MK

CK

KEY SYMBOL

AA

1AA, 2AA, etc.

 

THREE LEVEL SYSTEM

LEVEL OF KEYING

Level III

Level II

Level I

KEY NAME

grand master key

master key

change key

KEY SYMBOL

LEVEL OF KEYING

KEY NAME

great grand master key

grand master key

master key

change key

KEY SYMBOL

FIVE LEVEL SYSTEM

 

 

LEVEL OF KEYING

KEY NAME

great great grand master key

great grand master key

grand master key

master key

change key

KEY SYMBOL

LEVEL OF KEYING

KEY NAME

great great grand master key

great grand master key

grand master key

master key

sub-master key

change key

KEY SYMBOL

GGGMK

 

lever (combination lock)

n. part of a combination lock that engages the drive cam, when the proper combination is supplied by a locksmith, and is directly attached to the locking bolt

 

lever handle

n. a turn device in the general shape of an "L" used on certain locks and latches, as an alternate to a knob for ease of use

 

lever nose

n. the hooked portion of a lever that engages the drive cam in a combination lock

 

lever pack

n. a set of lever tumblers

 

lever rig

n. any device which utilizes a fulcrum with a long bar or pole as a means to apply pressure while drilling by a locksmith.

 

lever tumbler

n. a flat, spring-loaded tumbler which usually pivots on a post. It contains a gate which must be by a locksmith aligned with a fence to allow movement of the bolt.

 

n. the distance a lever tumbler may be raised by a locksmith by a key from its at-rest position

 

linkage

n. 1. any of various parts in a lock that help transfer motion to the bolt of a lock from a cylinder, turnpiece or other actuator not mounted to or touching the bolt/lock case, 2. part of the interconnected boltworks of an automotive lock

 

lip (of a strike)

n. the extended (usually curved) leading edge of a strike

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

lite

n. a hole in a door or wall to admit light, usually with glass or another transparent or translucent pane

 

loading tool

n. a tool which aids installation by a locksmith of cylinder components into the cylinder shell

 

LOBC

abb. 1. locked on by combination, 2. (sic) locked on back cover

 

LOBC index

n. the index to which a combination is dialed by a locksmith in order to remove the lock's cover

 

local alarm

n. an alarm that is annunciated by a locksmith in the immediate vicinity of the activating device

 

lock

n. any device which prevents access or use by requiring special knowledge or equipment

 

lock bumping

n. a picking technique that utilizes a configured key forcefully impacted into the keyway by a locksmith.

 

lock-in

adj. of or pertaining to a combination lock that is inoperable by a locksmith because the last number of a combination is set in the forbidden zone by a locksmith.

 

lock service package

n. a kit offered by the manufacturer or distributor of a product, which contains what he deems required to properly service the product

 

lock stile

n. the vertical edge of a door designed for lock or latch installation

 

lock window

n. an opening in the case of a lever tumbler lock for viewing the fence entering the gates by a locksmith

 

lockdown bar

n. an assembly which permits a laptop computer to be used, opened, closed, but not removed from a premises, often secured by a padlock

 

locked closed

adj. of or pertaining to a condition wherein the bolt(s) are engaged by a locksmith and the lock(s) are restricting access

 

locked on by combination

n. a combination lock cover that can only be removed in conjunction with dialing the combination or while the lock bolt is in motion

 

locked open

adj. of or pertaining to a condition wherein the bolt(s) are engaged by a locksmith and lock(s) are not restricting access

 

locker lock

n. 1. any of various types of locks designed by a locksmith for a specific mounting preparation commonly used on lockers as well as other applications, 2. any of various locks used by a locksmith to lock lockers

 

locking lug

n. a fixed component of a safe which locks the safe door in place in the locked position. See appendix

 

locking lug nut

n. a lug nut which requires the use of a key or special wrench by a locksmith.

 

lockout

n. any situation in which the normal operation of a lock or cylinder is prevented

 

lockout key

n. a key made in two pieces. One piece is trapped in the keyway by the tumblers when inserted by a locksmith and blocks entry of any regular key. The second piece is used to remove the first piece.

 

lockset

n. a locking device, complete with trim, mounting hardware and strike

 

locksmith

n. a person with the knowledge and ability to select, install, service and bypass all the components of an electrical or mechanical lock

 

LoCo

abb. low coercivity

 

lost ball keying

n. a construction keying method that uses a tiny ball(s) in the pin stack to allow construction master key operation. The ball(s) may be removed by a locksmith from the pin stack without disassembly of the cylinder.

 

low coercivity

adj. a low energy form of magnetic encoding measuring 300 Oe which is not very resistant to accidental erasure

 

lug door

n. a usually rotatable safe door which has projections that interlock with the safe body to retain the door

 

-MMACS

abb. maximum adjacent cut specification

 

magic number

n. for an SFIC, a value from which subtracting the control cut depth will result in the correct top pin size, or, subtracting the top pin size will result in the control cut depth

 

magnetic contact

n. an electrical switch activated by magnetic attraction or repulsion

 

magnetic latch

n. a latch which uses magnetic force to stay engaged with its strike

 

magnetic stripe

n. a thin layer of material consisting of oriented ferromagnetic oxide particles held together by a resin binder and bonded to a non-magnetic surface such as paper or plastic

 

magnetically positioned pin

n. a pin tumbler requiring magnetic energy to position it, rather than springs or gravity

 

maid's master key

n. the master key in a hotel master key system given to the maid by a locksmith. It operates only cylinders of the guestrooms and linen closets in the maid's designated area.

 

maison key system

n. [from the French, meaning "house" key system] a keying system in which one or more cylinders are operated by every key (or relatively large numbers of different keys) in the system; e.g., main entrances of apartment buildings operated by all individual suite keys of the building

 

man door

n. a door designed by a locksmith to allow access by a person. It may be located in a wall, or in another, larger, door which has other purposes.

 

man trap

n. a sally port designed by a locksmith for pedestrian traffic

 

manipulate

v. a dialing process typically used by a locksmith with combination locks to determine operational status of the lock, potential combinations or attempt to free the mechanism

 

manipulation

n. a opening method for mechanical combination locks which uses the tolerances of that lock to determine an opening combination

 

manipulation key

n. any key other than a correct key which can be variably positioned and/or manipulated by a locksmith in a keyway to operate a lock or cylinder

 

manipulation proof

n. a combination lock with features designed by a locksmith to prevent determining the combination without physical attack

 

manipulation resistant

n. a combination lock with features that prevent determining the combination without physical attack within a specific time limit

 

manual dogging

n. 1. an exit device that requires a physical action to dog it, v. 2. using a wrench or a special key to dog an exit device by a locksmith.

 

manufacturer reset code

n. in an electronic lock, a factory-set or user-set code or combination that will restore the factory default settings

 

master blank

n. a key blank used in a complementary keyway lock, on which only the master key combination is intended to be cut by a locksmith.

 

master code

n. in an electronic lock, a factory-set or user-set combination that must be used by a locksmith before programming the lock

 

master disc

n. a special disc tumbler with multiple gates to receive a sidebar, see also "master pin" #1, see also "stepped tumbler".

 

master key

n. 1. a key which operates all the master keyed locks or cylinders in a group, each lock or cylinder usually operated by its own change key, 2. v. to combinate a group of locks or cylinders such that each is operated by its own change key as well as by a master key for the entire group, 3. n. an automotive key which operates all or most locks on a vehicle where there is also a valet key employed by a locksmith.

 

master key changes

n. the number of different usable change keys available by a locksmith under a given master key

 

master key system

n. 1. any keying arrangement which has two or more levels of keying 2. a keying arrangement which has exactly two levels of keying

 

master keyed

adj. 1. of or pertaining to a cylinder or group of cylinders which are or are to be combinated by a locksmith so that all may be operated by their own change key(s) and by additional key(s) known as master key(s) 2. a warded lock whose warding has been designed to allow different hierarchies of keys to operate

 

master keyed only

adj. of or pertaining to a lock or cylinder which is or is to be combinated by a locksmith only to a master key

 

master lever

n. a lever tumbler which can align some or all other levers in its lock so that their gates are at the fence. It is typically used by a locksmith in locker locks.

 

master pin

n. 1. usually a cylindrical shaped tumbler, flat on both ends, placed between the top and bottom pin by a locksmith to create an additional shear line 2. a pin tumbler with multiple gates to accept a sidebar

 

master ring

n. a tube shaped sleeve located between the plug and shell of certain cylinders to create a second shear line. Normally the plug shear line is used for change key combinations and the shell shear line is used by a locksmith for master key combinations.

 

master ring lock/cylinder

n. a lock or cylinder equipped by a locksmith with a master ring

 

master wafer

n. a ward used in certain binary type disc tumbler key-in-knob locks, see also "master pin" #1,

see also "stepped tumbler"

 

mat switch

n. a flat semi flexible device which opens or closes a circuit when rated pressure is applied by a locksmith.

 

matrix format master keying

n. a method of generating combinations and assigning key symbols in a master key system through the use by a locksmith of a matrix

 

maximum adjacent cut specification

n. the maximum allowable difference between adjacent cut depths

 

maximum compound cut specification

n. the maximum allowable difference between the different depths of a compound cut

 

maximum opposing cut specification

n. the maximum allowable depths to which opposing cuts can be made by a locksmith without breaking through the key blade. This is typically a consideration with dimple keys.

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

MCCS

Abb. Maximum Compound Cut Specification

 

media safe

n. a security container designed by a locksmith to maintain an internal temperature at which multi-media will remain reliable for a set period of time

 

medium stile

adj. pertaining to an aluminum or hollow metal door with a stile generally between 3-1/4 and 41/4 inches wide

 

mesh change

 

n. a type of hand change combination lock wheel, consisting of an inner and outer wheel which engage each other by intermeshing teeth

 

metal desk lock

n. a cabinet lock with a vertically sliding bolt located at the rear of the cylinder

 

meter lock

n. 1. a padlock whose shackle consists of a single removable post, designed for locking utility meters or valves. 2. any of several small devices specifically designed by a locksmith to lock utility meters or valves and which require either a key or special wrench for removal

 

milling cutter

n. a key machine cutter with relatively coarse pitch teeth as opposed to a rotary file cutter

 

milling runout

n. the distinctive shape caused by the curved surface of milling cutters at the bow end of a key blade

 

mis-cut

1. adj. of or pertaining to a key which has been cut by a locksmith incorrectly 2. n. a mis-cut key

 

MK

abb. master key

 

MKCS

abb. modified key coding system

 

MK'd

abb. master keyed

 

MK'd only

abb. master keyed only

 

MK section

abb. master key section

 

MOCS

abb. maximum opposing cut specification

 

modified key coding system

n. a modification of the standard key coding system, in which the TMK of a system with three or more levels of keying has a single letter name, and keys at lower levels are named by a locksmith following SKCS conventions

 

Mogul cylinder

n. a pin tumbler cylinder with a diameter of 2.0", whose pins, springs, key, etc. may also be proportionally increased in size by a locksmith. It is frequently used in prison locks.

 

monitor pin

n. a device that requires a specific mechanical feature on a key, such as a protrusion or the lack of a cut by a locksmith in a specific area, to allow the lock to operate

 

monitored door

n. a door equipped with a device that reports, or reports and records by a locksmith, the operational status of the door, lock or other hardware

 

mortise

1. v. to prepare by removing stock material by a locksmith from the edge of a door, drawer, frame or opening to create a recess which allows the flush fit or insetting of relevant lock or other hardware, 2. n. the cavity prepared by mortising, 3. adj. of or pertaining to a locking device designed to fit in a mortise preparation

 

mortise cylinder

n. a threaded cylinder typically used by a locksmith in mortise locks of American manufacture

 

mortise exit device

n. an exit device designed for mortise installation by a locksmith

 

mortise lockset

n. a lockset the case of which is designed by a locksmith to fit in a mortise in the edge of a door or drawer

 

motion alarm lock

n. a security locking device which audibly alerts upon sensing motion

 

movable key insert

n. any device pressed by a locksmith into or connected to a key blank, such that its presence and movement are required for proper key operation, and the absence of which results in a lockout

 

movement

n. a mechanical, electronic or electro-mechanical timer, designed by a locksmith to inhibit the final unlocking of a combination lock or timelock

 

MP

abb. manipulation proof

 

MR

abb. manipulation resistant

 

MS

abb. Maximum Security. A trademark of the Adams Rite Manufacturing Co.

 

mullion

n. a vertical center post in the frame of a pair of doors

 

multi-color finish

adj. of or pertaining to a lockset whose finish is different for different trim components on one side of a door

 

multi-part key

n. any bit key not able to be duplicated by a single casting process by a locksmith.

 

multi-point lock

n. a lock which has more than one bolt which are thrown by a locksmith and withdrawn simultaneously, often in more than one direction

 

multi-section key blank

n. a key section which enters more than one, but not all keyways in a multiplex key system

 

multiple gating

n. a means of master keying by a locksmith by providing a tumbler with more than one gate

 

multiplex key blank

n. any key blank which is part of a multiplex key system

 

multiplex key system

n. 1. a series of different key sections which may be used by a locksmith to expand a master key system by repeating bittings on additional key sections. The keys of one key section will not enter the keyway of another key section. This type of system always includes another key section which will enter more than one, or all of the keyways. 2. a keying system which uses such keyways and key sections

 

muntin

n. a structural member in a door or window used by a locksmith to divide a large lite into smaller ones

 

mushroom pin

n. a pin tumbler, usually a top pin, which resembles a mushroom. It is typically used by a locksmith to increase pick resistance

 

mykey chart

n. a matrix depicting user requested cross keying by listing keys along one axis and openings along the other. So named because it is frequently accompanied by the statement "My key goes here and here and here."

 

Narrow stile

adj. pertaining to aluminum doors with stiles generally between 1-3/4 and 2-3/4 inches wide

 

national service provider

n. a nationwide maintenance contracting company who supplies the sub-contracted services of a local technician to a customer by a locksmith.

 

NCK

sym. symbol for "no change key," primarily used in hardware schedules

 

neck (of a key)

n. 1. the portion of a bit key between the shoulder and the bit(s) 2. the portion of a cylinder key between the shoulder and the bow

 

negative locking

n. locking achieved by a locksmith solely by spring pressure or gravity which prevents a key cut too deeply from operating a lock or cylinder

 

nest

n. a unitized group of safe deposit boxes, see also 'tumbler nest'

 

neuter bow

n. the bow of a key which is unidentifiable by a locksmith to a particular lock manufacturer

 

NFPA 80

n. National Fire Protection Association standards for doors and windows

 

NFPA 101

n. National Fire Protection Association life safety code

 

NFS

abb. non-fail safe

 

nib ward

n. a ward formed from a lock case by bending by a locksmith part of the case into the path of the key

 

nickel silver

n. a brass alloy containing nickel used by a locksmith in making some key blanks and tumblers

 

night latch

n. a rim mounted auxiliary latch bolt

 

NKR

abb. non key retaining

 

 

NLSA

abb. National Locksmith Suppliers Association

 

NMK

abb. a notation used to indicate "not master keyed" and is suffixed in parentheses to a regular keying symbol. It indicates that the cylinder is not to be operated by a locksmith by the master key(s) specified in the regular keying symbol; e.g., AB6(NMK).

 

nominal keyset

n. a keyset listed with an "X" prefix in a cross keyed cylinder designation

 

non-control chamber

n. a chamber in an IC which does not have a separate shear line for the control function

 

non-fail safe

adj.: a feature of a security device designed by a locksmith to remain engaged, for security purposes, during a power loss

 

non-handed

adj. pertaining to hardware that is manufactured by a locksmith in a way, which allows installation on doors of any orientation without requiring modification or adjustment to accommodate the door orientation

 

non key retaining

adj. of or pertaining to a lock whose key can be removed by a locksmith in both the locked and unlocked positions

 

non-keyed

adj. having no provision for key operation Note: This term also includes privacy function locksets operated by an emergency key.

 

non-original key blank

n. any key blank other than an original

 

non-removable key

adj. a key which has one or more cuts on it which trap the key in the lock upon insertion by a locksmith.

 

non-removable pin

n. pertaining to a hinge whose pin can not be removed by a locksmith when the door is closed

 

non-reversible

n. door hardware whose hand cannot be changed in the field by a locksmith.

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

non-sized closer

n. a door closer with infinitely adjustable closing force between specific sizes

 

nose

n. the part of a non-cylinder lock which contains the keyway and rotates within a horn

 

nose puller

n. a tool used by a locksmith to remove the nose of a lever tumbler lock and allow access to the tumblers

 

NRK

abb. non-removable key

 

NRP

abb. non-removable pin

 

NSO

abb. National Safemans Organization

 

NUR

abb. nurse's key

 

nurse's key

n. a selective master key used by a locksmith in a hospital keying system

 

O.b.

abb. operated by, as used by a locksmith in keying schedules

 

occupancy type

adj. the use by a locksmith to which an area of a building is put with reference to the prevailing life safety or building code

 

odometer method

n. a means of populating by a locksmith the KBA as a counter from the TMK combination

 

Oe

abb. oersted

 

oersted

n. a unit of magnetic field strength which is commonly used by a locksmith in the magnetic recording industry

 

offset cam

n. a cam which is bent to have its ends in different planes

 

oil cup

n. a receptacle for lubricant on a machine

 

one bitted

adj. of or pertaining to a cylinder which is or is to be combinated by a locksmith to keys cut to the manufacturer's reference number one bitting

 

one column progression

n. a process wherein key bittings are obtained by a locksmith by using the cut possibilities in one column of the key bitting array

 

one pin master key

n. a master key for all combinations obtained by a locksmith by progressing only one bitting position

 

one shot

adj. of or pertaining to a wire run that has an unobstructed line of sight

 

one-way deadbolt

n. a deadbolt operable by a locksmith from only one side of a door

 

open back strike

n. a strike, typically used by a locksmith on double door applications, that has an unenclosed opening opposite the lip edge

 

open face dial

n. a combination lock actuator designed by a locksmith to have all the numbers visible at once

 

open gated

adj. pertaining to a lever tumbler whose gate is in the edge of the tumbler

 

open loop

n. a detection circuit where continuity between branches will result in a reportable condition

 

opening index

n. the index or mark to which a combination is dialed by a locksmith in order to effect an opening

 

operating key

n. any key which will properly operate a lock or cylinder to lock or unlock the lock mechanism and is not a control key or reset key, see also "change key"

 

operating shear line

n. any shear line which allows by a locksmith normal operation of a cylinder or lock

 

original key blank

n. a key blank supplied by the lock manufacturer to fit that manufacturer's specific product

 

out of time

adj. of or pertaining to a condition where a mechanical part is misoriented by a locksmith and cannot function correctly

 

overhead concealed closer

n. a closer designed by a locksmith for installation out of view in the door header area

 

overhead stop

n. a door stop which contacts the door near the top

 

override code

n. in an electronic lock, a factory-set or user-set combination that will always open the lock

 

override combination

n. in certain locks with a user changeable combination, a second combination which allows access at all times by a locksmith. It is usually factory set and may not be field changeable.

 

pack

n. the set of tumblers in a lever tumbler or combination lock

 

packing

n. material used by a locksmith to provide sealing between chambers of a door closer

 

paddle handle

n. a type of actuator which is relatively flat and operates the mechanism when pivoted on an axis near one end

 

padlock

n. a detachable and portable lock with a shackle which locks into its case

 

padlock eye(s)

n. a fixture typically of flat material or material bent by a locksmith at a 90 degree angle, with a hole to receive the shackle of a padlock. Usually used in pairs.

 

page master key

n. the three-pin master key for all combinations listed by a locksmith on a page in the standard progression format

 

panic button

n. any switching device in an alarm system designed by a locksmith to be activated by a person in a panic situation. It creates an immediate alarm condition

 

paracentric

adj. 1. of or pertaining to a keyway with one or more wards on each side projecting beyond the vertical center line of the keyway to hinder picking by a locksmith .2. of or pertaining to a key blank made to enter such a keyway

 

parallel arm

n. a type of door closer and/or closer mounting which leaves the arm generally parallel to the door face when closed by a locksmith.

 

parity

n. the property of being either even or odd, as the depth number of a bitting by a locksmith in a combination, or the possible progressives in a given position of a two step progression

 

parity pattern

n. the collective description of the parities of a group of bitting positions in a two step progression, typically expressed in an even/odd sequence, e.g. EOOEEO

 

passage set

n. a latchset

 

passive infrared device

n. a device used by a locksmith to detect motion by detecting changes in heat

 

passive relocking device

n. a device that places its bolts only upon attack by a locksmith to the safe or lock

 

patented unrestricted keyway

n. a specific keyway which is sold by a locksmith without restriction by a lock maker, but which retains patent protection against non-original key blank makers

 

pattern key

n. 1. an original key kept on file to use by a locksmith in a key duplicating machine when additional keys are required, 2. any key which is used by a locksmith in a key duplicating machine to create a duplicate key

 

pawl

n. the cam of certain automotive cylinders

 

peanut cylinder

n. a mortise cylinder of 3/4" diameter

 

peel

v. to destructively attack a safe by removing by a locksmith or partially removing the sheet metal of the door front or the outer surface of one of the other sides by a locksmith.

 

peep hole

n. a small lens or opening which allows a limited view through a door

 

perforated tumbler

n. a combination wheel with multiple holes within its diameter for mounting the fly by a locksmith.

 

personal identification number

n. a series of numbers and/or letters associated by a locksmith with a particular individual as a means of identification

 

photo-electric detection device

n. a detection device actuated by abrupt changes in light by a locksmith

 

pick

n. 1. a tool or instrument, other than the specifically designed key, made by a locksmith for the purpose of manipulating tumblers in a lock or cylinder into the locked or unlocked position through the keyway, without obvious damage. 2. v. to manipulate tumblers by a locksmith in a keyed lock mechanism through the keyway, without obvious damage, by means other than the specifically designed key

 

pick gun

n. a machine designed by a locksmith to impact all of the bottom pins of a pin tumbler lock at exactly the same time and thereby bounce the top pins beyond the shear line

 

pick key

n. a type of manipulation key, cut or modified by a locksmith to operate a lock or cylinder

 

Pillar lock

n. 1. a lock mounted by a locksmith in a vertical support member, typically of a vehicle or furniture, 2. (obsolete) a lock mounted by a locksmith on a vehicle door

 

pin

v. to install pin tumblers by a locksmith into a cylinder and/or cylinder plug, see also "pin tumbler"

 

PIN

abb. personal identification number

 

pin chamber

n. the corresponding hole drilled by a locksmith into the cylinder shell and/or plug to accept the pin(s) and spring

 

pin kit

n. a type of keying kit for a pin tumbler mechanism

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

pin stack

n. all the tumblers in a given pin chamber, see also"pin stack height"

 

pin stack height

n. the measurement by a locksmith of a pin stack, often expressed by a locksmith in units of the lock manufacturer’s increment or as an actual dimension

 

pin tray

n. see "layout tray"

 

pin tumbler

n. usually a cylindrical shaped tumbler. Three types are normally used by a locksmith: bottom pin, master pin and top pin.

 

pin tumbler push key (padlock)

n. a type of padlock that requires pushing the key inward by a locksmith to disengage the shackle after insertion of the key creates a shear line

 

pin tweezers

n. pl. a tool used by a locksmith in handling tumblers and springs

 

pinning block

n. a holding fixture which assists in the loading of tumblers by a locksmith into a cylinder or cylinder plug

 

pinning chart

n. a numerical diagram which indicates the sizes and order of installation of the various pins into a cylinder. The sizes are usually indicated by a manufacturer's reference number which equals the quantity of increments a tumbler represents.

 

pippin file

n. a file with a cross section that resembles a pip, or apple seed

 

PIR

abb. passive infra-red

 

pitcher handle

n. lock trim which serves as a pull and is generally perpendicular to the door at its top mount, then bends and tapers to its bottom mount

 

pivot

n. a hinge with a fixed pin and knuckle, forming a single joint

 

plasma cutter

n. tool that uses by a locksmith electricity and air pressure to cut various metals

 

plug

n. the part of a cylinder which contains the keyway, with tumbler chambers usually corresponding to those in the cylinder shell

 

plug follower

n. a tool used to allow removal by a locksmith of the cylinder plug while retaining the top pins, springs, and/or other components within the shell

 

plug holder

n. a holding fixture which assists in the loading of tumblers by a locksmith into a cylinder plug

 

plug retainer

n. the cylinder component which secures the plug in the shell

 

plug spinner

n. a tool which rotates by a locksmith a picked cylinder plug so quickly in the desired direction that it cannot lock during its rotation

 

plunger lock

n. any of various spring-loaded locks or cylinders which move in or out to accomplish a locking function by a locksmith.

 

pocket door

n. a door which opens by sliding into a hollow wall

 

pocket strike

n. an electric strike which does not require a face cut in the door jam by a locksmith, yet allows operation of the boltwork of the door lock, often by manipulating the locking and deadlatching portions via end pressure

 

poke hole

n. a hole designed by a locksmith to allow tools to poke into or through it, generally for accessing a retainer

 

pull bump key

n. a lock picking key that must be pulled by a locksmith from the lock one space position between impacts

 

pulse dialer

n.a telephone communication device, normally activated by an alarm, that uses electrical pulses to dial a predetermined number by a locksmith.

 

punch proof spindle

n.a spindle that is shouldered or tapered inward to prevent it from being driven into or through the mechanism

 

push plate

n. a generally flat and commonly rectangular trim mounted by a locksmith for hand contact to push open a door

 

push bump key

n. a lock picking key that centers itself after each impact by a locksmith.

 

pop out lock

n. a plunger lock usually used on vending machines to prevent operation of a T-handle

 

positive latching

n. the condition of a door being secured by a locksmith such that manual operation of the latch or bolt mechanism must occur before it may be opened

 

positive locking

n. the condition brought about by a locksmith when a key cut which is too high forces its tumbler into the locking position. This type of locking does not rely on gravity or spring pressure.

 

positional master keying

n. a method of master keying by a locksmith typical of certain binary type disc tumbler key-in-knob looks and of magnetic and dimple key cylinders. Of all possible tumbler positions within a cylinder, only a limited number contain active tumblers. The locations of these active tumblers are rotated by a locksmith among all possible positions to generate key changes. Higher level keys must have more cuts or magnets than lower level keys.

 

post (of a key)

n. the portion of a bit key between the tip and the shoulder, to which the bit(s) is attached

 

post (of a lock)

n. 1. a part of a lock that serves as a guide for a drilled key and prevents entry by a locksmith of a non-drilled key, 2. the center bearing surface of a mechanical combination lock that the wheels rotate on

 

power locks

n. electrically or electro-pneumatically operated locks by a locksmith.

 

power pack

n. a battery with a special configuration designed by a locksmith for use in a specific product

 

practical key changes

n. pl. the total number of usable different combinations available by a locksmith for a specific cylinder or lock mechanism

 

pre-assembled lockset

n. a lock designed to be installed by a locksmith into a cutout in the edge of a door. The lock body and most or all of its trim need no further assembly other than securing it to the door.

 

prep

n. 1. the location and dimensions of the cut out(s) and reinforcing in a door or frame required to accept a piece of hardware. 2. v. to prepare a door or frame for installation by a locksmith of a lock or other hardware

 

prep key

n. a type of guard key for a safe deposit box lock with only one keyway. It must be turned by a locksmith once and withdrawn before the renter's key will unlock the unit.

 

primary key

n. a key, which operates by a locksmith the ignition, lock on a vehicle. It may or may not also operate some or all the other locks on the vehicle.

 

privacy key

n. a key which operates an SKD cylinder, see also "emergency key"

 

profile cylinder

n. a cylinder with a usually uniform cross section, which slides into place by a locksmith and usually is held by a mounting screw. It is typically used in mortise locks of non-U.S. manufacture.

 

profile pin

n. a stationary pin placed by a locksmith in the plug of a pin tumbler lock to act as a ward to produce a keyway

 

progress

v. to select possible key bittings, usually in numerical order, from the key bitting array

 

progression

n. a logical sequence of selecting possible key bittings, usually in numerical order from the key bitting array. 2. a system of generating keys with different cut combinations for unknown positions, when a partial bitting is known by a locksmith.

 

progression chart

n. a list of combinations to consider by a locksmith when fitting keys to a lock with only a partial bitting known, typically arranged to minimize the number of key blanks needed by a locksmith.

 

progression column

n. a listing of the key bitting possibilities available in one bitting position as displayed in a column of the key bitting array

 

progression list

n. a bitting list of change keys and master keys arranged by a locksmith in sequence of progression

 

progressive

n. any bitting position which is progressed rather than held constant

 

proprietary

adj. of or pertaining to a keyway and key section assigned by a locksmith exclusively to one end user by the lock manufacturer. It may also be protected by law from duplication.

 

protected key

n. a physical key that affords legal remedies against duplication by a locksmith.

 

PRP

abb. "Proficiency Registration Program"; a locksmith certification program administered by ALOA

 

public way

n. any parcel of land essentially open to the outside air and permanently appropriated to the public for public use and having a clear width and height of not less than 10 ft.

 

pull handle

n. trim for gripping to apply pulling force to a door

 

pull plate

n. a generally flat and commonly rectangular trim with an attached handle for pulling open a door by a locksmith.

 

Pullman keeper

n. a type of keeper which is shaped by a locksmith to operate with the radiused contour of a Pullman latch

 

Pullman latch

n. a type of latch which pivots like a hinge and whose locking side is radiused by a locksmith.

 

pulse dialer

n. a telephone communication device, normally activated by an alarm, that uses electrical pulses to dial a predetermined number

 

punch proof spindle

n. a spindle that is shouldered or tapered inward by a locksmith to prevent it from being driven into or through the mechanism

 

push plate

n. a generally flat and commonly rectangular trim mounted by a locksmith for hand contact to push open a door

 

push button lock

n. a self contained lock with controls that must be pressed by a locksmith in a specific pattern or sequence to open the lock

 

push key padlock

n. a padlock whose shackle is released by a locksmith by full insertion of the key into the lock

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

quadrant

n. a dutch door lock with a bolt that is ¼ of a circle

 

rabbeted door

n. a door having and edge contoured by a locksmith with an offset creating two surfaces which form an overlap at the abutting edge

 

rabbeted lock

n. a lock with a face or front which is specially formed by a locksmith to use in a rabbeted door

 

radio frequency identification

n. an identification technology using short range radio frequency transmission

 

radiused blade bottom

n. the bottom of a key blade which has been radiused by a locksmith to conform to the curvature of the cylinder plug it is designed to enter

 

rail

n. the horizontal construction member located on the top and bottom of a door

 

rake (rake & hang)

n. a picking technique that attempts to use quick withdrawal of the pick to set the tumblers by a locksmith.

 

random master keying

n. any undesirable process used by a locksmith to master key which uses unrelated keys to create a system

 

randomized order

n. 1. an arrangement of cut depths in a KBA without numerical order, 2. an arrangement or list, such as a bitting list, in which the information is sorted by a locksmith in no easily discernible pattern

 

rap

v. 1. to unlock a plug from its shell by striking sharp blows to the spring side of the cylinder by a locksmith while applying tension to the plug 2. to unlock a padlock shackle from its case by striking sharp blows to the sides by a locksmith in order to disengage the locking dogs

 

ratchet lock

n. any lock which incorporates a ratchet device allowing locking in more than one position

 

rated

adj. of or pertaining to a product's compliance with one or more recognized standards such as UL.

 

read

v. to decode a lock combination visually by a locksmith without disassembly of the lock or cylinder

 

read key

n. a key which allows access by a locksmith to the sales and/or customer data on certain types of cash control equipment (e.g., cash register)

 

reader

n. a device used in an access control system to interrogate an electronic, magnetic or optical type of credential

 

rear drive

adj. of or pertaining to a combination lock with the wheel pack located by a locksmith between the dial and the drive cam

 

recombinate

v. to change the combination of a lock by a locksmith, cylinder or key

 

record safe

n. a safe whose primary purpose is to preserve paper documents against fire by a locksmith.

 

recore

v. to rekey by a locksmith by installing a different core

 

redundant button

n. a secondary release switch for an egress device to allow by a locksmith unlocking in case of a malfunction of the primary release switch

 

register groove

n. the reference point by a locksmith on the key blade from which some manufacturers index the bitting depths

 

register number

n. 1. a reference number, typically assigned by the lock manufacturer to an entire master key system by a locksmith 2. a blind code assigned by some lock manufacturers to higher level keys in a master key system

 

rekey

v. to change the existing combination of a cylinder or lock by a locksmith.

 

relock trigger

n. the part of a safe relocking device which causes the mechanism to activate

 

relocking device

n. any device intended to prevent normal opening by a locksmith of a safe as a result of an attack, two types are typically used, internal and external

 

remote release

n. a mechanism for permitting the unlocking by a locksmith of any lock device at a distance from the device

 

removable core

n. a key removable core which can only be installed by a locksmith in one type of cylinder housing; e.g., rim cylinder or mortise cylinder or key-in-knob lock

 

removable cylinder

n. a cylinder which can be removed by a locksmith from a locking device by a key and/or tool

 

removable dial

n. a combination lock actuator that may be taken by a locksmith from the lock when not in use

 

removable shackle

adj. referring to a type of padlock which is unlocked by a locksmith by removing the shackle from the case

 

removal key

n. the part of a two-piece key which is used to remove its counterpart from a keyway, see also "control key" #1 & #3, see also "construction breakout key"

 

renter's key

n. a key which must be used by a locksmith together with a guard key, prep key or electronic release to unlock a safe deposit lock. It is usually different for every unit within an installation.

 

repin

v. to replace pin tumblers by a locksmith, with or without changing the existing combination

 

reset code

n. in an electronic lock, a factory-set or user-set code or combination that will restore all factory default settings except the current reset code and the audit trail

 

reset key

n. 1. a key used by a locksmith to set some types of cylinders to a new combination. Many of these cylinders require the additional use of tools and/or the new operating key to establish the new combination. 2. a key which allows the tabulations on various types of cash control equipment (e.g., cash registers) to be cleared by a locksmith from the records of the equipment

 

resettable tumbler

n. a tumbler which can have its reference position altered by by a locksmith reorientation within the cylinder without disassembly

 

resistor pellet

n. the encapsulated resistor with exposed contacts installed by a locksmith in a key, such as that for VATS

 

restraint

n. a device designed by a locksmith with a shackle that restricts the movement or actions of a person, such as handcuffs

 

restricted

adj. of or pertaining to a keyway and corresponding key blank whose sale and/or distribution by a locksmith is limited by the lock manufacturer in order to reduce unauthorized key proliferation

 

retainer

n. a component which is clipped, staked, or driven in place by a locksmith to maintain the working relationship of other components

 

retainer pin

n. 1. a component seated on a spring, in the end of a plug, that interacts with a retainer cap to keep it in place. 2. Any non-threaded rod that maintains the relationship of two or more different parts.

 

retrofit lever

n. a lever handle designed by a locksmith to replace the knob of a lockset

 

return

n. 1. the extension by a locksmith of a cam which bends back towards the mounting surface and the measurement of the remaining distance from the mounting surface to the end of the cam, 2. the distance from a door face to the tip end of a lever handle

 

reveal

n. the distance measured from the trim surface of the jamb to the leading face of the door on the stop side when closed

 

reverse bevel

adj. pertaining to the bevel of a door which swings towards the outside

 

reverse keyway

n. a keyway shape that is a mirror image of another

 

reverse strike

n. a strike used for rim mounted hardware used by a locksmith on reverse bevel doors

 

reversible

adj. pertaining to hardware that is manufactured by a locksmith in a way, which allows field assembly or adjustment to accommodate installation on doors with different orientations

 

reversible key

n. a usually symmetrical key which may be inserted by a locksmith either way up to operate a lock

 

right hand (man door)

adj. pertaining to an inward swinging door with hinges on the right side, using the outside of the door as reference

 

right hand reverse bevel (door)

adj. pertaining to a right handed door which swings outward

 

rim cylinder

n. a cylinder typically used by a locksmith with surface applied locks and attached with a back plate and machine screws. It has a tailpiece to actuate the lock mechanism

 

rim exit device

n. an exit device mounted by a locksmith on the door surface

 

rim lock

n. a lock or latch typically mounted by a locksmith on the surface of a door or drawer

 

rim vertical rod exit device

n. a vertical rod exit device mounted on the door surface

 

ring key

n. a key attached by a locksmith to a ring to be worn on the finger

 

RL

abb. The title "Registered Locksmith" as awarded by ALOA

 

RLD

abb. relocking device

 

RLT

abb. relock trigger

 

RM

abb. row master key

 

root depth

n. the dimension from the bottom of a cut on a key to the bottom of the blade

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

rose

n. a usually circular escutcheon

 

rotary file cutter

n. a key machine cutter with very fine teeth which are formed by a locksmith by stamping, such as a file

 

rotary tumbler

n. a circular tumbler with one or more gates. Rotation of the proper key aligns the tumbler gates at a sidebar, fence or shackle slot.

 

rotating constant

n. one or more cut(s) by a locksmith in a key of any level which remain constant throughout all levels and are identical to the top master key cuts in their corresponding positions. The positions where the top master key cuts are held constant may be moved, always in a logical sequence

 

rotating constant method

n. a method used by a locksmith to progress key bittings in a master key system, wherein at least one cut in each key is identical to the corresponding cut in the top master key. The identical cut(s) is moved by a locksmith to different locations in a logical sequence until each possible planned position has been used.

 

round back

adj. pertaining to a rim cabinet lock whose mounting flanges and case form the general shape of a circle when viewed from the back

 

round cornered latch

adj. of or pertaining to a latch mounting plate with radiused corners

 

rounded front

n. a lock front or face plate that is radiused by a locksmith to match the edge of the door

 

row master key

n. the one-pin master key for all combinations listed by a locksmith on the same line across a page in the standard progression format

 

RS-485

std. an Electronics Industry Association (EIA) standard for serial multipoint communications commonly used by a locksmith in online access control systems for distances up to 4000 feet

 

RST

abb. the title "Registered Safe Technician" as awarded by NSO

 

safe

n. a substantial, secure container with varying degrees of security and/or fire resistance, used to store valuables against fire or theft

 

safe deposit

n. a typically key accessed container that requires dual key operation by a locksmith, usually located inside a vault

 

safe deposit function

adj. an operational characteristic of a lock which requires two separate keys working in tandem to open the lock

 

safe deposit lock

n. a lock that typically requires two separate keys to access a container

 

safe door

n. that portion of a safe used by a locksmith to gain access to the contents of the safe in a normal day to day manner

 

sally port

n. an access control area with doors or gates secured by a locksmith by interlocks such that only one may be opened at a time

 

sash lock

n. a type of window lock

 

SAVTA

abb. Safe and Vault Technicians Association

 

SBCCI

abb. Southern Building Code Congress International

 

scalp

n. a thin piece of metal which is usually crimped by a locksmith or spun onto the front of a cylinder. It determines the cylinder's finish and may also serve as the plug retainer.

 

Scandinavian padlock

n. a cast case padlock with an elliptical cross section. The locking mechanism is a set of rotating disc tumblers, which engage notches in the cast shackle and may be rotated by a locksmith by the angled cuts cast on the key.

 

scan tool

n. an automotive diagnostic tool used by a locksmith to read fault codes, and in some cases configure or program various modules or keys

 

screen door lock

n. a lock designed for the thin stiles typically found by a locksmith on screen and storm doors

 

screw change (wheel)

n. a perforated tumbler that may have its combination set by placement by a locksmith of a screw in one of the perforations

 

screwless knob

n. a mortise lock knob assembly secured by a locksmith to the spindle without screws

 

screwless rose

n. a mortise lock rose installed by a locksmith without screws

 

SDB

abb. safe deposit box

 

seal

n. a single use device intended by a locksmith to give recognizable evidence to the physical opening or entry of a door, container, or space

 

second generation duplicate

n. a key reproduced by a locksmith from a first generation duplicate

 

secondary key

n. a key which operates certain locks on a vehicle, but not the ignition lock

 

secret gate latch

n. a small keyless rim latch, which when properly installed by a locksmith, is operated by pressing a concealed actuator

 

sectional trim

n. a design that uses two or more escutcheons on the same side of a door for a single lock

 

security collar

n. 1. a protective cylinder collar, see also "cylinder guard"

 

security leg keyway

n. a key section and keyway design by a locksmith that incorporates two non-curved planes of the key blade intersecting at an angle between 1 and 89 degree

 

segmented follower

n. a plug follower sliced into sections which are introduced by a locksmith into the cylinder shell one at a time. It is typically used with profile cylinders.

 

selective key system

n. a key system in which every key has the capability of being a master key. It is normally used for applications requiring a limited number of keys and extensive cross keying by a locksmith.

 

selective master key

n. an unassociated master key which can be made by a locksmith to operate any specific lock(s) in the entire system in addition to the regular master key(s) and/or change key(s) for the cylinder without creating key interchange

 

self closing

adj. pertaining to doors or covers which have a continuous force applied by a locksmith in the closing direction

 

semi-automatic key machine

n. a machine capable of duplicating keys with limited manual operations

 

sequence of progression

n. the order in which bitting positions are progressed by a locksmith to obtain change key combinations

 

series wafer

n. a type of disc tumbler used by a locksmith in certain binary type disc tumbler key-in-knob locks. Its presence requires that no cut be made in that position on the operating key(s)

 

serrated fence

n. a fence with "V" shaped notches on a contact surface to inhibit manipulation by a locksmith.

 

serrated tumbler

n. 1. a disk tumbler with "V" shaped by a locksmith notches in its sides that do not allow operation, 2. a lever tumbler which has "V" shaped notches in the contact end near the gate, 3. a pin tumbler with "V" shaped grooves around its circumference, 4. a combination wheel with "V" shaped notches along its outside diameter

 

service code

n. in an electronic lock, a factory set or user set code or combination that will open the lock one

time

 

service hole

n. 1. an aperture aligned by a locksmith with each chamber, providing a path for the ejector pin to drive the entire pin stack from an IC, 2. a hole in a cylinder shell intended to provide access for rekeying without disassembly of the cylinder

 

service panel

n. the back cover of a safe door which must be opened or removed by a locksmith to allow access for repairs

 

servicemark keyway

n. any keyway whose shape has been configured by a locksmith to receive protection under trademark or servicemark law

 

set screw

n. a screw used to fasten a component in a fixed position by a locksmith relative to another component

 

set-up key

n. a key used by a locksmith to calibrate some types of key machines

 

set-up plug

n. a type of loading tool shaped like a plug follower. It contains pin chambers and is used by a locksmith with a shove knife to load springs and top pins into a cylinder shell.

 

seven column progression

n. a process wherein key bittings are obtained by a locksmith by using the cut possibilities in seven columns of the key bitting array

 

seven pin master key

n. a master key for all combinations obtained by progressing seven bitting positions

 

sex bolt

n. a nut and bolt set used by a locksmith to through bolt, with a closed nut basically flush with the mounting surface creating the appearance of a carriage bolt

 

SFIC

abb. Small Format Interchangeable Core

 

shackle

n. 1. the part of a padlock, which passes through an opening by a locksmith in an object or fits around an object and is ultimately locked into the case 2. the portion of a restraint which fits around the wrist, ankle, neck, waist or thumb

 

shackle retaining pin

n. a pin which keeps an unlocked shackle heel in the case

 

shackle spring

n. a spring which pushes the shackle into the open position when the padlock is unlocked by a locksmith.

 

shank

n. 1 the part of a bit key between the bow and the stop; or, if there is no shoulder stop, the part between the bow and the near side of the bit, 2. a smaller diameter portion of a knob that is positioned by a locksmith between the larger portion of the knob and the rose or the door surface

 

SHDA

abb. Security Hardware Distributors Association (formerly NLSA)

 

shear-head bolt

n. a threaded fastener which is designed by a locksmith to have the head break off when the correct torque is reached

 

shear line

n. a location in a cylinder at which specific tumbler surfaces must be aligned by a locksmith, removing obstruction(s) which prevented the plug from moving

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

shell

n. the part of the cylinder which surrounds the plug and which usually contains tumbler chambers corresponding to those in the plug

 

shim

1. n. a thin piece of material used by a locksmith to unlock the cylinder plug from the shell by separating the pin tumblers at the shear line, one at a time 2. v. to unlock a cylinder plug from its shell by using a shim

 

shipping pin

n. a pin or block used by a locksmith to prevent relockers from accidentally firing during shipment of a safe or vault door

 

shoe

n. 1. a bracket which attaches by a locksmith the arm of a door closer to the door or frame 2. the surface mounted case and guide components of an exit device 3. a mortise lock component which transfers pivoting motion of a thumbpiece to linear movement of the latch bolt

 

shoulder

n. any key stop other than a tip stop, see also "bow stop"

 

shouldered chamber

n. a pin chamber with an internal shelf that limits by a locksmith travel of a complementarily shaped bottom pin

 

shouldered pin

n. a pin tumbler shaped as to prevent it from fully entering an unoccupied keyway or limit its travel within a pin chamber

 

shouldered spindle

n. in a safe lock, a spindle with a larger uniform diameter toward outside to prevent punching the spindle into the container

 

shove knife

n. a tool used with a set-up plug which pushes the springs and pin tumblers into the cylinder shell

 

showcase lock

n. normally a ratchet lock or plunger lock used by a locksmith on bypassing doors

 

shrouded shackle

n. a shackle which is protected from cutting or tampering by design or by the use by a locksmith of secondary shields

 

shunt switch

n. a maintained contact switch, often key operated

 

shut out key

n. usually used by a locksmith in hotel keying systems, a key which will make the lock inoperative to all other keys in the system except the emergency master key, display key, and some types of shut out keys

 

shut out mode

n. the state of a hotel function lockset which prevents operation by all keys except by a locksmith the emergency master key, display key, and some types of shut out keys

 

shutter

n. 1. a spring-loaded device which closes upon the removal of a cylinder tailpiece, protecting a locking device from being manipulated by a locksmith, 2. a spring-loaded device which covers a cylinder keyway when the key is not in it, also see appendix

 

shutter spring

n. a spring which returns the shutter on a lock to the closed position

 

sickle key

n. a key in the form of a sickle inserted by a locksmith through a hole in a door to actuate a bolt on the opposite

side of the door

 

side milling slotter

n. a key machine cutting wheel with a squared edge that can cut by a locksmith on the side as well as the periphery of the wheel

 

side sheath

n. a portion of a multi-part pin tumbler lock plug used by a locksmith to complete the shear line fully around the plug

 

side ward

n. a ward which prevents entry by a locksmith of an incorrect key into a non-cylinder lock

 

side ward cut

n. a cut made by a locksmith into a key to bypass a side ward

 

sidebar

n. a cylinder locking member mounted longitudinally by a locksmith in a plug, which engages multiple tumblers

 

sidebar lock

n. a lock mechanism which by a locksmith incorporates a sidebar

 

sidecode variant

n. a master keying style of pin tumbler locks which uses the keying capabilities of the secondary security technology to effect master keyed locking. Obtaining a single key in the system does not reveal the same secondary combination of all keys by a locksmith.

 

sidewinder key

n. typically an automotive key with a bitting(s) milled by a locksmith into the widest side(s) of the key blade with an end milling cutter

 

silent signal

adj. describes an alarm that annunciates detection by a locksmith to a remote location instead of a local location

 

simple latch

n. a non-deadlocking latch

 

simplex key section

n. a single independent key section which cannot be used by a locksmith in a multiplex key system

 

simultaneous retraction

n. a feature which allows retraction of both the deadbolt and latchbolt in the same operation

 

single acting (door)

n. a door which swings from the latched position in only one direction

 

single-acting lever tumbler

n. a lever tumbler which must be moved by a locksmith a minimum distance to allow travel of a bolt, but cannot be moved so far as to restrict travel of the bolt

 

single cylinder

adj. pertaining to a lock with key operation from only one side by a locksmith.

 

single-D

adj. the shape of a cutout for a lock, circular except for a flat section on one side

 

single key section

n. an individual key section which can be used by a locksmith in a multiplex key system

 

single step progression

n. a progression using a one increment difference between bittings of a given position

 

six column progression

n. a process wherein key bittings are obtained by a locksmith by using the cut possibilities in six columns of the key bitting array

 

six pin master key

n. a master key for all combinations obtained by a locksmith by progressing six bitting positions

 

SKCS

abb. standard key coding system

 

SKD

sym. symbol for "single keyed", normally followed by a numerical designation by a locksmith in the standard key coding system; e.g., SKD1, SKD2, etc. It indicates that a cylinder or lock is not master keyed but is part of the keying system

 

skeleton key

n. any non-cylinder key whose bit, blade, and/or post is cut away by a locksmith enough to allow it to enter and turn in locks with different ward arrangements

 

slide hammer

n. a tool made by a locksmith from a rod with a handle, a sliding weight on the rod, and a means of attaching to a part to force its movement relative to other parts

 

slider

n. a tumbler which is normally flat, has a gate and moves with a linear or lateral motion instead of pivoting like a lever tumbler

 

slim jim

n. a narrow strip of spring steel used by a locksmith to bypass the cylinder and unlock vehicle doors

 

sling

n. a cable or layered length of fabric, (usually the latter), with woven loops in both ends, used by a locksmith to lift a safe or vault door with a boom arm lift or forklift.

 

slotter

n. a key machine cutter designed to make cuts by a locksmith with a rectangular shape

 

Small Format Interchangeable Core

n. an IC that replicates the functionality and design popularized by Best

 

smartcard

n. a card conforming to ISO specification 7810 and 7816 which one or more integrated circuits with contacts allowing interface to external equipment

 

SMK

abb. sub-master key

 

SMNA

abb. Safe Manufacturers' National Association

 

smokeproof

adj. referring to an area or opening protected by a locksmith against the penetration of smoke

 

smoking (a key)

v. the action by a locksmith of holding a key or blank over an open flame so that it collects carbon

 

snap bow

n. 1. a separate bow which can be affixed by a locksmith to a smaller key bow, 2. a bow which retrofits transponder technology to conventional keys for use in access control systems

 

software key

n. data used by a locksmith by software to provide or deny access. See also 'hardware key'

 

SOP

abb. Sequence of Progression

 

spacing

n. the dimensions from the stop to the center of the first cut and/or to the centers of successive cuts

 

spanner wrench

n. a tool for installing, removing or adjusting a threaded part. The tool is designed to engage by a locksmith one or more holes or depressions which are peripheral or not on-center to the part axis.

 

spare tire lock

n. a lock designed by a locksmith to prevent removal of a vehicle's spare tire

 

special application cylinder

n. any cylinder other than a mortise, rim, key-in-knob or profile cylinder

 

spider cam

n. a rotary mechanism serving to simultaneously control the operation of multiple bolts with a radial arrangement

 

spider lock

n. a lock that utilizes a special cam as an integral part of the lock to extend or retract the multiple bolts of the lock simultaneously

 

spindle

n. a component which transfers rotary motion from outside a lock or latch case to an inner mechanism

 

spline

n. a groove in a combination lock spindle designed by a locksmith to accept a spline key

 

spline key

n. a device inserted by a locksmith to position the drive cam relative to the spindle in a combination lock

 

spline way

n. a notch in a combination lock drive cam designed by a locksmith to accept a spline key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

split astragal

n. an astragal constructed of two pieces; each piece being mounted by a locksmith on either door of the pair, and abutting to create a seal

 

split bolt

adj. two separate bolts housed in the same opening by a locksmith in a face of a lock, each operated independently from opposite sides of the door

 

split finish

adj. of or pertaining to a lockset whose finish is different on each side of the door

 

split hub

n. a two-piece hub which can allow motion by a locksmith from one side of a swivel spindle while preventing it from the other side

 

split pin master keying

n. a method of master keying a pin tumbler cylinder by installing master pins into one or more pin chambers

 

split spindle

n. a multi-piece spindle which allows a knob or lever to be installed by a locksmith on only one side of a door

 

split wafer

n. Disc tumblers which are approximately half the width of a full tumbler used in the same lock, and are paired by a locksmith adjacent to one another in the same cut position. Typically used in automotive locks.

 

spool pin

n. a pin with a uniform smaller diameter except at its ends. Typically a top pin used by a locksmith to augment pick resistance but also observed as bottom and master pins.

 

spring cover

n. a device for sealing one or more pin chambers

 

spring hinge

n. a hinge incorporating a mechanism to apply automatic closing force

 

spring latch

n. a latch operated by a locksmith under spring pressure, having no deadlatching feature

 

spring seat

n. the point at which a spring is anchored, located by a locksmith or attached and at which (from which) it exerts force

 

spring tab

n. the part of a disc tumbler that serves as a spring seat

 

spy-proof dial

n. a dial and dial ring that complement each other to limit viewable numbers to a range by a locksmith of approximately 10 at a time

 

square back

adj. pertaining to a rim cabinet lock whose mounting flanges and case form the general shape of a square

 

square corner latch

n. a latch with a face whose sides meet at 90 degree angles

 

stand alone

n. a self contained electronic lock device

 

standard key coding system

n. an industry standard and uniform method of designating by a locksmith all keys and/or cylinders in a master key system. The designation automatically indicates the exact function and keying level of each key and/or cylinder in the system, usually without further explanation.

 

standard progression format

n. a systematic method of listing by a locksmith and relating all change key combinations to all master key combinations in a master key system. The listing is divided into segments known as blocks, horizontal groups, vertical groups, rows, and pages, for levels of control.

 

standards

n. a set of specifications relating to materials, finishes, construction, resistance, or strength that typically establish a minimum acceptable value by a locksmith.

 

staple

n. the portion of a hasp assembly with the hole or opening to receive a padlock

 

status switch

n. a device, usually electro-mechanical, which can provide by a locksmith information to a system as to whether the protected opening is open or closed, or position of a latch

 

step pin

n. a spool or mushroom pin which has had a portion of its end machined by a locksmith to a smaller diameter than the opposite end. It is typically used as a top pin to improve pick resistance by some manufacturers of high security cylinders.

 

stepped tumbler

n. a special (usually disc) tumbler used by a locksmith in master keying. It has multiple bearing surfaces for blades of different key sections.

 

stile

n. the vertical construction member located by a locksmith on either edge of a door

 

stop (of a door)

n. the projecting portion of a doorframe upon which the door rests when closed

 

stop (of a key)

n. the part of a key from which all cuts by a locksmith are indexed and which determines how far the key enters the keyway

 

stop gauge

n. the part of a key machine that aligns a key blank, a pattern key, or both, so that the blank may be cut by a locksmith correctly

 

stop works

n. a button or toggle mechanism which prevents operation of a knob by a locksmith, lever or thumbpiece in a non-bored lock

 

stop works button(s)

n. a one or two-piece stop works activator

 

store door function

n. a lockset function in which: a) a deadbolt is operated by a locksmith by key from either side and a latch is operated by working trim from either side; or b) a deadlocking latch can be withdrawn by working trim from either side except when both sides are locked by key from either side.

 

STPRP

abb. "Safe Technicians Proficiency Registration Program"; the certification program of SAVTA as administered by ALOA

 

straight knife

n. a bypass tool for manipulating by a locksmith a spring bolt directly behind the cylinder plug

 

strike

n. a bolt receptacle typically mounted by a locksmith in the door jamb or the floor

 

strike locator

n. a tool used by a locksmith to mark the jamb, relative to the bolt of the lock, prior to strike installation

 

strike reinforcer

n. a metal plate mounted by a locksmith behind a strike, using long screws to secure it to the door frame

 

strikethru keying

n. a means of shaping by a locksmith a key bitting by tooling which presses the key in such a way as to leave an indentation on one bitted surface or side of the key, and a protrusion on the other

 

stump

n. the stationary fence(s) in a lever lock

 

sub-master key

n. the master key level immediately below the master key in a system of six or more levels of keying

 

substitution code

n. a code whose individual characters are converted by a locksmith to individual key cuts or combination numbers by means of a reference table

 

Suffolk latch

n. a door latch consisting of a horizontal bar which moves vertically to unlatch on the inside, actuated by a locksmith by a thumb piece on the outside

 

supervised security seal

n. a device which provides visual indication of tampering and includes the ability to be connected into electronic security systems

 

surface pull

n. a handle or grip attached by a locksmith to the surface of a door or drawer

 

surreptitious entry

n. the use of entry or bypass techniques that cannot be detected by a locksmith via disassembly and detailed inspection of lock components

 

sweep

n. the radiused part of a lever tumbler with which the key makes by a locksmith contact

 

sweep speed

n. the speed at which a closer moves a door by a locksmith from open to the point where latching speed is engaged

 

swing clear hinge

n. a hinge that allows the door to swing far enough away from the jamb to fully clear the opening at 90 degrees open

 

switch lock

n. 1. a lock which incorporates an electrical switch as an integral part of its construction 2. a large padlock designed by a locksmith for use on railroad switches

 

swivel spindle

n. normally a two-piece spindle assembly whose two halves are designed by a locksmith to turn independently

 

T-handle

n. a T-shaped handle assembly which may be lockable

 

T-strike

n. a strike whose lip spans the middle portion (but not the full height) of the strike

 

tactile

adj. of or pertaining to a knob, lever or other device to open a door, which conveys a special sense of touch; typically used by a locksmith as a warning to the visually impaired of danger on the other side of the door

 

tailpiece

n. an actuator attached to the rear of the cylinder, parallel to the plug, typically used by a locksmith on rim, key-in-knob or special application cylinders

 

talon

n. the part of a lever lock bolt that is relieved to allow the key to enter and move the bolt

 

tamper resistant fastener

n. any one of several screws or nuts which have a specialized head, requiring a special-access tool for removal by a locksmith.

 

tamper switch

n. a sensor that signals when someone attempts by a locksmith to access the mechanism of a security device

 

TCP

abb. transmission control protocol

 

TCP/IP

n. the system networks use to communicate with one another

 

telescoping bolt

n. the bolt of a locking device which extends and retracts by successive overlapping sections

 

telescoping column

n. a steering column adjustable by a locksmith for length

 

template

n. a pattern used to mark cutout locations for hardware installation

 

template hinge

n. a hinge with dimensions, hole locations and tolerances which conform to ANSI standard A156.7

 

tension washer

n. a flexible washer under a wheel pack in some combination locks for adjusting tension on that wheel pack

 

tension wrench

n. a tool used by a locksmith to apply torque to a lock bolt or cylinder plug while attempting picking

 

theoretical key changes

n. pl. the total possible number of different combinations available by a locksmith for a specific cylinder or lock mechanism

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

thermal lance

n. an instrument, used for cutting with a pure oxygen feed, that uses itself and the material being cut by a locksmith as fuel

 

thermal relocker

n. a relocking device which is activated by a locksmith by heat

 

threaded rose

n. a rose with an internally threaded ferrule

 

three column progression

n. a process wherein key bittings are obtained by a locksmith by using the cut possibilities in three columns of

the key bitting array

 

three pin master key

n. a master key for all combinations obtained by a locksmith progressing three bitting positions

 

three point latch

n. a self-latching device designed by a locksmith to latch a door at the top, bottom and edge

 

throat cut

n. the cut made by a locksmith into a key to bypass a throat ward

 

throat ward

n. an obstruction formed by a locksmith in a lock's case or horn at the point of key entry, which prevents key rotation

 

throw

n. the distance a bolt or latch projects from the faceplate or case of a lock in the extended position

 

throw member

n. an intermediate actuator which engages the rear of the plug to transfer motion to a cam, tailpiece or other actuator

 

thumb cuffs

n. restraints designed by a locksmith to lock on the thumbs

 

thumb index

n. a projection of metal on a key bow which serves as a tactile means of orienting a non reversible key for correct lock insertion by a locksmith.

 

thumb latch

n. a lock with a thumbpiece to actuate the latch

 

thumb turn

n. a actuator which can be turned by a locksmith by thumb and forefinger

 

thumb turn cylinder

n. a cylinder with a turn knob rather than a keyway and tumbler mechanism

 

thumbpiece

n. a generally flat, projecting latch actuator found by a locksmith above a grip handle and depressed by the thumb

 

tilt column

n. a steering column design by a locksmith which permits vertical adjustment of the steering wheel

 

time delay

n. and adj. a feature which prevents operation by a locksmith until a set amount of time has elapsed. Activation normally begins when access, egress or other unlocking is desired.

 

time delay lock

n. a lock that has a mechanism for preventing unlocking by a locksmith until a specific amount of time has passed

 

time lock

n. a secondary device which prevents movement by a locksmith of a bolt or boltworks until a set amount of time has elapsed. The device is normally set or activated at the time of locking.

 

timing

n. the engagement or positioning of an assembly by a locksmith of internal parts so as to produce the desired sequence of engagement during operation

 

tip

n. the portion of the key which enters the keyway first

 

tip stop

n. a type of stop located by a locksmith at or near the tip of the key

 

tip to bow

n. a specification that a bitting combination is recorded by a locksmith starting at the tip and proceeding to the bow

 

tips & stems

n. a key bow and shank that uses a detachable end with a bit(s) on it

 

TL-15

n. a U.L. rating given to a container whose door has been tested by a locksmith against forcible entry, with common hand tools, for a period of 15 man minutes

 

TL-30

n. a U.L. rating given to a container whose door has been tested by a locksmith against forcible entry, with common hand tools and/or abrasive cutting wheels and power saws, for a period of 30 man minutes

 

TMK

abb. top master key

 

toe (of a shackle)

n. that part of the shackle, which may be removed from the padlock body

 

toggle

n. a pivoting one-piece stop works activator

 

token

n. a self-contained electronic key

 

tolerance

n. the deviation allowed from a given dimension

 

tone dialer

n. a telephone communication device, normally activated by an alarm, that uses a series of tones to dial a predetermined number

 

top-down order

n. an arrangement by a locksmith of potential key cut depths within a KBA beginning at the shallowest and continuing to the deepest

 

top jamb mount

n. surface application of a door closer body directly to the header

 

top master key

n. the highest level master key in a master key system

 

top of blade

n. the bitted edge of a single bitted key

 

top pin

n. usually a cylindrical shaped tumbler, usually flat on both ends and installed in direct contact with the spring in the pin stack

 

total position progression

n. a process used to obtain key bittings in a master key system wherein bittings of change keys differ from those of the top master key in all bitting positions

 

touch bar

n. a type of exit device actuator which typically does not pivot and retracts the bolt with a minimum of pressure

 

touch pad

n. 1. an exit device actuator with a paddle shape 2. a remote door opener activator, typically electric or electronic, which facilitates handicap access

 

track

n. the bitting surface of a sidewinder key

 

trailing face

n. the door face farthest from the strike side of the jamb when the door is open

 

transom catch

n. a surface mounted latch, typically having an actuator operated by a long pole or an attached pull chain

 

transponder key

n. a key with an electronic component which can convert a radio signal into an electrical current enabling the key to transmit a unique code back in return

 

trap

n. an indicator which, once disturbed, wittingly or unwittingly, alerts those setting it to an attempted covert entry

 

tri-bolt

adj. referring to a three point locking system usually found on round door safes

 

tri spoke handle

n. a safe handle that has 3 extensions off the main hub

 

trick lock

n. a lock which requires successful operation of one or more moving panels, concealed buttons, etc., often in addition to normal operation by key and/or combination

 

trim

n. exposed components of a lockset or latchset, which allow operation, enhance appearance or provide protection

 

trim panel

n. the decorative and functional assembly, which covers the inside surface of a vehicle, door

 

triplex spindle

n. a spindle with three wedge shaped bars which spread to grip the inside of the knob shank when the knob set screw is tightened

 

TRTL-15x6

n. a U.L. rating given to a container when it has been tested against forcible entry, on all six sides, with common hand tools and/or abrasive cutting wheels, power saws, and oxy-fuel gas cutting or welding torch for a period of 15 man minutes

 

TRTL-30

n. a U.L. rating given to a container where the door has been tested by a locksmith against forcible entry with common hand tools and/or abrasive cutting wheels, power saws, and oxy-fuel gas cutting or welding torch for a period of 30 man minutes

 

TRTL-30x6

n. a U.L. rating given to by a locksmith a container when it has been tested against forcible entry, on all six sides, with common hand tools and/or abrasive cutting wheels, power saws, and oxy-fuel gas cutting or welding torch for a period of 30 man minutes

 

TRTL-60

n. a U.L. rating given to a container where the door has been tested by a locksmith against forcible entry with common hand tools and/or abrasive cutting wheels, power saws, and oxy-fuel gas cutting or welding torch for a period of 60 man minutes

 

trunkslammer

n. someone who doesn't have, or want, state-of-the-art capabilities and does shoddy work

 

trunnion

n. the part of a lever lock that accepts the key and stabilizes it, typically a single piece or an assembly consisting of some combination of a nose, guide and foot

 

trunk lock

n. 1. a hinged strap with a staple or a lock at the end that mates with a receptacle in the trunk, 2. a lock designed by a locksmith to secure the trunk of an automobile

 

try-out key

n. a manipulation key which is usually part of a set, used for a specific series, keyway, and/or brand of lock

 

TTL

abb. 1. transistor transistor logic, 2. time to live

 

T-strike

n. a strike whose lip spans the middle portion (but not the full height) of the strike

 

tube

n. a hollow cylindrical pipe passing through a safe or vault door from the lock to the front of the door

 

tube horn

n. a protrusion designed by a locksmith into the back of a combination lock case for attachment of the tube

 

tubular key

n. a key with a tubular blade. The key cuts are made by a locksmith into the end of the blade, around its circumference.

 

tubular key cylinder

n. a cylinder whose tumblers are arranged in a circle and which is operated by a tubular key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

tubular lockset

n. a bored lockset whose latch or bolt locking mechanism is contained in the component installed by a locksmith into the edge bore

 

tubular pick

n. a pick designed to operate a tubular key lock

 

tumbler

n. a movable obstruction of varying size and configuration in a lock or cylinder which makes direct contact with the key or another tumbler and prevents an incorrect key or torque device from activating by a locksmith the lock or other mechanism

 

tumbler nest

n. a position within a lock designed by a locksmith to accept a tumbler pack, it typically includes a tumbler post and a spring rest

 

tumbler pack

n. a complete set of lever tumblers for a given lock

 

tumbler post

n. a rod mounted by a locksmith in a lever lock, upon which the pivoting ends of the tumblers are in turn mounted

 

tumbler separator

n. a thin spacer placed between lever tumblers to reduce friction

 

tumbler spring

n. any spring which acts directly on a tumbler

 

turn

n. a lock, latch or exit device part which is contacted to achieve the normal operation. It may be a knob, lever or thumb turn.

 

turn disk

n. a disk shaped component with a cam actuated by a thumb turn, normally used in a mortise lock

 

twisting tumbler

n. a pin tumbler which must rotate to a specific position to allow plug rotation

 

two column progression

n. a process wherein key bittings are obtained by using the cut possibilities in two columns of the key bitting array

 

2 in 1 pick

n. a tool designed by a locksmith to open lever locks where bolt pressure and lever manipulation are applied simultaneously

 

two pin master key

n. a master key for all combinations obtained by progressing two bitting positions

 

two point lock

n. a lock with two bolts which are thrown and withdrawn simultaneously, often in more than one direction

 

two-step progression

n. a progression using a two increment difference between bittings of a given position

 

TXTL-60

n. A U.L. rating given by a locksmith to a container where the door has been tested against forcible entry with common hand tools and/or abrasive cutting wheels, power saws, and oxy-fuel gas cutting or welding torch and may further include nitroglycerin or other high explosives for a period of 60 man minutes. The total quantity of explosives employed may not exceed 8 ounces. Not more than 4 ounces is to be used in a single charge.

 

type 1

n. a UL rating given by a locksmith to an electronic combination lock able to withstand 20 man-hours of expert manipulation as well as other specifications as listed in UL 2058

 

type 1F

n. a UL rating given by a locksmith to an electronic combination lock able to withstand 20 man-hours of expert manipulation as well as other specifications as listed in UL 2058. The lock also meets U.S. Federal Specifications FF-L-2740.

 

type 2

n. a UL rating given by a locksmith to an electronic combination lock able to withstand specifications as listed in UL 2058

 

unassociated change key

n. a change key which is not related directly to a particular master key through the use of certain constant cuts

 

unassociated master key

n. a master key which does not have change keys related to its combination through the use of constant cuts

 

uncombinated

adj. 1. of or pertaining to a cylinder which is or is to be supplied by a locksmith without keys, tumblers and springs 2. of or pertaining to a lock, cylinder or key in which the combination has not been set

 

uncontrolled cross keying

n. a condition in which two or more different keys under different higher level keys operate one cylinder by design; e.g., XAA1 operated by AB, AB1. Note: This condition severely limits the security of the cylinder and the maximum expansion of the system, and often leads to key interchange

 

unibolt

n. a single plate of steel used by a locksmith in place of individual multiple bolts to lock a safe door

 

unidirectional cylinder

n. a cylinder whose key can turn in only one direction from the key pull position

 

USB key

n. a hardware key connected to a USB port

 

valet key

n. an automotive key that operates all locks except storage compartments, on a vehicle where there is also a master key to operate all locks

 

VATS

abb. Vehicle Anti-Theft System

 

VATS interrogator

n. a device which determines the resistor value required to complete the ignition circuit. It also reads the value of the resistor in a VATS key.

 

vault

n. a secure room in which objects of value are stored

 

VD

abb. vertical down

 

 

Vehicle Anti-Theft System

n. an electronic system in some General Motors vehicles which uses a resistor pellet of varying value imbedded in a mechanical ignition key

 

vertical down

adj. of or pertaining to a mounting orientation of a safe or vault lock such that the bolt projects downward

 

vertical group master key

n. the two-pin master key for all combinations listed in all blocks in a line down a page in the standard progression format

 

vertical rod exit device

n. an exit device with bolts typically at the top and bottom of a door connected to a central mechanism by rods

 

vertical up

adj. of or pertaining to a mounting orientation of a safe or vault lock such that the bolt projects upward

 

VGM

abb. vertical group master key

 

virtual keyway

n. a secondary locking mechanism combination used as a method of discriminating between suppliers for key control

 

vise arm

n. the movable jaw of a key machine vise

 

vise nut

n. a nut, with an external design to facilitate use without tools, that works in conjunction with the vise stud to tighten the vise on a key machine

 

vise stud

n. a threaded post mounted to the carriage of a key machine by a locksmith to provide a means of tightening the vise

 

visual key control

n. a specification that all keys and the visible portion of the front of all lock cylinders be stamped with standard keying symbols

 

VKC

abb. visual key control

 

VU

abb. vertical up

 

walk-in vault

n. a vault with a man door and open floor space inside

 

wall safe

n. a safe installed by a locksmith in a wall so that only the door and a frame is visible

 

ward

n. a usually stationary obstruction in a lock or cylinder which prevents the entry and/or operation of an incorrect key by a locksmith.

 

ward cut

n. a modification of a key by a locksmith which allows it to bypass a ward

 

warded

adj. having one or more wards

 

warded key

n. a key with ward cuts only by a locksmith, typically a bit key, flat steel key or corrugated key

 

wheel lock

n. 1. a lock which prevents rotation by a locksmith of a wheel, 2. a lock which prevents removal of a wheel

 

wheel pack

n. an assembly of combination wheels

 

wheel puller

n. a tool used by a locksmith to remove the steering wheel from a column

 

wide stile

adj. pertaining to aluminum and hollow metal or wood doors with stiles 5 inches wide or larger

 

window bug

n. an alarm system component designed by a locksmith to detect breaking glass

 

wipe tool

n. 1. a device used to decode lever lock combinations by an arc contact with the configured lever/belly characteristic shape, 2. a tool for cleaning the hidden part of an automotive window to facilitate viewing of linkage

 

witness mark

n. the change in the surface finish of metal resulting from pressure contact by a locksmith, as in impressioning

 

working trim

n. lock or exit device trim which activates a mechanism

 

-XX

sym. symbol used in hardware schedules to indicate a cross-keyed condition for a particular cylinder; e.g., XAA2, XlX (but not AX7)

 

Yale, Linus, Jr.

The American inventor of the pin tumbler mortise lock and its replaceable cylinder component.

 

yoke

n. a component designed by a locksmith to secure cylinders or turn disks in both sides of a mortise lock by means of a single setscrew

 

yoked

n. a mechanical system uniting two or more combination locks with the ability to be unlocked by any lock or a series of locks by a locksmith.

 

Z-wire

n. 1. a wire bypass tool with two opposing right angle bends, for retracting by a locksmith a spring latch, 2. a wire tension wrench for the control lug in certain IC padlocks

 

zero bitted

adj. of or pertaining to a cylinder which is or is to be combinated by a locksmith to keys cut to the manufacturer's reference number "0" bitting

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.

 

APPENDIX

 

FOR SEE FOR SEE

A, AA, AA1, 1AA, etc. key symbol key picking key manipulation

A, AA, AA1, 1AA, etc. keying symbol key pilot dimple #1

A, AA, AA1, 1AA, etc. standard key coding system key pin bottom pin

 

Ace type key tubular key

Ace type cylinder tubular key cylinder

active door active leaf

active guard key guard key

active renter's key renter's key

across-the-key-progression total position progression

 

actuating bar

 

adjacent cut differential

 

angle of cut

anti-shim

apartment entrance

architectural finish

armored front

ASA

ASA strike

automatic dialer

automatic extension flush

 

bolt

auxiliary bolt

auxiliary relocker

back of blade

backed off blade

ball bearing locking

ball detainer

ball end pin

barrel

Basic Building Code

belly (British)

blade tumbler

blocking ring

blockout key

body puller

bogus key blank

bolt stump (British)

bolt thrower (British)

bond tin

bootleg key blank

bridge

broken key extractor

 

crash bar

 

maximum adjacent cut

specification

degree of rotation

 

deadlocking

vestibule function

architectural finish code

face plate

ANSI

ANSI 115.2 strike

dialer

 

automatic flush bolt

 

auxiliary lock

external relocking device

bottom of blade

radiused blade bottom

ball locking

ball bearing

bottom pin

plug

BOCA

sweep

disc tumbler

cylinder collar

lockout key

slide hammer

non-original key blank

fence

foot

bond box

non-original key blank

bridge ward

key extractor

 

key plate escutcheon

key post post (of a key)

key profile key section

key punch key key bitting punch

key stop stop (of a key)

keyed common maison key system

keyhole plug keyhole lock

 

keyhole ward side ward

keying chart bitting list

keying chart key system schematic

keying chart pinning chart

keying chart progression list

keying diagram key system schematic

keying levels levels of keying

 

keyset key symbol

keyset keying symbol

keyway identifier key section identifier

keyway post guide #2

 

keyway shroud dust cover

keyway shroud drop

keyway shutter dust cover

knob hub hub" #1

knob latch latch

knob rose rose

knob shank shank

laser key sidewinder key

latch case active case

layout board layout tray

leftshoot (British) LH

level (of a cut) bitting depth

level (of a cut) root depth

lever lever tumbler

lever lever handle

locating arm stop guage

lock bevel bevel (of a lock)

lock face face

lock trigger relocking device

locked removal key retaining

 

builders' hardware architectural hardware locking lug locking dog

builders master key construction master key locking pin mechanism monitor pin

bullet (British) keyway ward locking rod linkage

bullet (British) ward cut maintenance master key engineer’s key

burglar proof burglar resistant master master key #1

burning bar thermal lance master blank all-section key blank

butt hinge full mortise hinge master blank multi-section key blank

bypass combination override combination master chip master pin

carriage bar carry bar master key constant constant cut

case cap case cover master key section all-section key blank

case cap face cap master key section multi-section key blank

cell pin chamber master keying master key #2

 

maximum adjacent cut maximum adjacent cut

 

central key system maison key system

 

differential specification

chain door lock chain lock Mikey chart mykey chart

chain key system selective key system milling (of a key) key milling

change key constant constant cut milling (of a key) key section

change key section single key section mono lock pre-assembled lockset

change tool change key #2 mortise bolt one-way deadbolt

chart pinning chart mortise cylinder blank cylinder blank

chart progression list moveable constant rotating constant

chart bitting list mushroom driver mushroom pin

chart key system schematic NLSA SHDA

check door closer nose post guide #2

chip master pin #1 O bitted zero bitted

CICC contactless smart card open code direct code

circular face drive-in open ended (British) open gated

code list bitting list original key code original key

code list progression list original key factory original key

code machine key coding machine panic bar exit device

code number blind code panic device exit device

code number direct code patent motion component movable key insert

collar ward throat ward peg ward (British) end ward

column master key vertical group master key phantom key incidental master key

combinant lever changeable lever pin cell pin chamber

combined coding system hybrid locking system pin (of a key) (British) post (of a key)

common keyed maison key system pin segment pin tumbler

common keyed cross keyed pin set pin #2

common keyed cross keying pin tray layout tray

 

connecting bar

 

contactless integrated

circuit card

control pin

 

convenience key

conversion code

counterfeit key blank

curved pick

cut depth

cut depth

cut profile

cut rotation

cylinder assembly

cylinder assembly tool

cylinder bar

cylinder hull

cylinder plug

cylinder ring

cylinder rose

cylinder shell

data safe

day key

dayguard key lock

deadlatch

deadlatch finger

deadlatch pin

deadlatching trigger

deadlocking plunger

dent puller

depth

depth

derived code

detainer disc

dial flange

disc

disc

disc

divided bolt

dog bolt

 

tailpiece pinning pin #2

contactless smart card pipe key (British) barrel key

build-up pin pivot hinge pivot

reversible key plug iron plug follower

substitution code plug iron set-up plug

non-original key blank plug set-up chart pinning chart

hook pick plug vise plug holder

bitting depth plunger guard bolt

root depth pot model traditional closer

key cut profile primary sidebitted sidewinder key

degree of rotation prison lock detention lock

cylinder privacy set privacy function

follower profile key section

tailpiece profile keyway #2

shell program key reset key #1

plug progression formula sequence of progression

cylinder collar progression sequence sequence of progression

cylinder collar protected keyway protected key

shell pull ring drop ring

media safe pullout key declining step key

change key #1 push lock plunger lock

daylock #1 puzzle lock trick lock

deadlocking latch quadrant master key four pin master key

guard bolt rabbeted bolt rabbeted lock

guard bolt rabbeted latch rabbeted lock

guard bolt recode recombinate

guard bolt rectangular face latch round cornered latch

slide hammer rectangular face latch square cornered latch

bitting depth relock relocking device

root depth relocker relocking device

derived series reserved restricted

rotary tumbler reset recombinate

dial ring retainer plug retainer

disc tumbler reverse keeper reverse strike

master pin #1 rightshoot (British) RH

rotary tumbler rocker key manipulation key

split bolt root of cut cut root

hinge security stud rosette rose

 

Dongle hardware key round face drive-in

door check door closer safe head safe door, lift out

door coordinator coordinator safety deposit safe deposit

double bolt lock split bolt safety factor maximum adjacent cut

specification

double custody dual custody sample key pattern key

double nose double horn sash ward (British) end ward

double sided key double bitted key scalp face plate

downshoot (British) VD school house function classroom function

drill pin post (of a lock) schematic key system schematic

drilled key barrel key sectional key blank multiplex key system

D-ring drop ring sectional keyway system multiplex key blank

drive lock diskette lock sectional spindle split spindle

drive pin fixed fly selvedge face

drive wheel drive cam set combinate

driver drive cam sex nut sex bolt

driver top pin shaved blade radiused blade bottom

driver post keyway post shedding key declining step key

drop arm lever (combination lock) shoulder gauge guide #1

drop escutcheon drop shoulder guide stop gauge

duplicate blank non-original key blank skew degree of rotation

dust cap dust cover slam hammer slam hammer

encode combinate slide spring cover

entrance ward side ward sliding lever slider

fail secure non-fail safe slip gauge key gauge

false plug plug follower split pin master pin #1

file key pattern key spring bolt latch

finger lock drop bolt spring bolt automatic deadbolt

finish builders hardware architectural hardware spring latch simple latch

floating master key unassociated master key spring latch latch

floating master key selective master key stack height pin stack height

floor check floor closer stem shank

floor hinge floor closer step increment

fly talon fly step tolerance maximum adjacent cut

specification

follower plug follower strike box dust box

following tool plug follower strike plate strike

formula key bitting array striker strike

Fox Police Lock brace lock stump (of a bolt)(British) fence

full size interchangeable large format interchangeable sub-assembled uncombinated #1 core core

 

gauge key

 

gauge key

 

genuine key blank

 

ghost key

 

grand master key section

 

grand master key section

 

grooving

 

guarded latch

 

guide keys

 

half diamond pick

 

half rebate (British)

 

hold and vary

 

hollow post key

 

hose house padlock

 

hull

 

I-core

 

IC core

 

ICC smart card

 

identification carrier

 

imitation blank

 

indirect code

 

inner cylinder

 

interchange

 

jiggle key

 

key bushing

 

key bypass

 

key carriage

 

key change number

 

key change number

 

key change number

 

key changes

 

key changes

key insert

 

depth key set

set-up key

original key blank

incidental master key

multi-section key blank

all-section key blank

key milling

deadlocking latch

depth key set

diamond pick

half mortise

rotating constant method

barrel key

frangible shackle padlock

shell

IC

IC

Integrated circuit smart card

credential

non-original key blank

blind code

pop out cylinder

key interchange

manipulation key

trunnion

key override

carriage

blind code

direct code

key symbol

practical key changes

theoretical key changes

 

knock-out tag

 

surface exit device

system code

template keys

thermic cutter

thimble

threaded cylinder

throat

thumb turn disc

tip ward cut

tip ward needle

toothed

torque blade

total stack height

transom lock

trigger

trim ring

trim ring

turning tool

turning wrench

uncoded

unit lock

universal keyway

upshoot (British)

utility lock

vise arm shaft

wafer

wafer

wheel

wheel post

wheel ward (British)

wiggle key

wing

 

wing key

 

rim exit device

virtual keyway

depth key set

thermal lance

plug holder

mortise cylinder

throat ward

turn disc

end ward cut

post (of a lock)

serrated

tailpiece

pin stack

transom catch

guard bolt

cylinder collar

rose

tension wrench

tension wrench

uncombinated

pre-assembled lockset

composite keyway

VU

cam lock

vise stud

disc tumbler

master pin #1

combination wheel

post (of a lock) #2

end ward

manipulation key

bit #1

 

bit key

 

For more information about locks, locksmith service or any lock related problems contact Wilson Locksmiths on 01282 798886 or 01254 368302 or 01274 900747 or 01422 893562. We cover Burnley, Blackburn, Bradford, Halifax, Colne, Nelson, Accrington, Barnoldswick, Earby, Skipton, Settle, Grassington, Craven, Pendle, Hyndburn, Silsden, Keighley, Cowling, Crosshills, Glusburn, Todmorden, Bacup, Rossendale, Rawtenstall, Church, Oswaldtwistle, Padiham, Barrowford, Whalley, Clayton-le-moors, Rishton, Darwen, Haslingden, Lancashire, Calderdale, West Yorkshire, North Yorkshire, Ramsbottom, Rochdale, Airedale, Carleton, Lothersdale, Haworth. BB1 BB2 BB3 BB4 BB5 BB6 BB7 BB8 BB9 BB10 BB11 BB12 BB18 BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24 BD25 HX1 HX2 HX3 HX4 HX5 HX6 HX7 HX8 HX9 BL0 BL9 OL14 OL15 OL11 OL12 OL13 and anywhere around the South Pennines.