Abstract: A latch mechanism is described having a housing comprised of a top plate having an aperture, side walls and an end wall depending from the top plate so as to leave a ledge adjacent its periphery, resilient tabs extending outwardly from said side walls and toward said top plate, slots in the side walls parallel to the top plate, a bolt suspended in said housing by wings extending into respective slots and a spring between the end wall of said housing and an end of the bolt.

Abstract: A latch mechanism is provided for a window which includes a top section and a bottom section with a surrounding groove therebetween. The groove may be varied in size depending on the particular sash header or base slot rail utilized. Different bottom sections can be employed which have flexible side walls of different heights to increase the versatility of the latch mechanisms. Tilt latch mechanisms can also be manufactured formed of a variety of different materials, with a variety of bottom sections having different side wall heights, some of which may be flexible.

Abstract: A latch assembly for a lockset is disclosed comprising a cylindrical bolt including at least one axially extending flat portion and a cylindrical casing which is to be inserted into matched bore in a door and which includes a bore for receiving the bolt. The bolt and bore include cooperating structure for maintaining a desired orientation of the bolt relative to the bore as the bolt is displaced from an extended position to a retracted position. A cylindrical adaptor is provided for effectively increasing the diameter of the cylindrical casing including first and second semi-cylindrical portions displaceable into abutting relationship to capture the cylindrical casing and to define a selectively sized outer diameter. The semi-cylindrical portions are releasably secured together when they abut and have a radially inwardly extending end portion which together define an opening selectively configured to matingly receive the cylindrical bolt thereby defining a facing for the cylindrical casing.

Abstract: A locking mechanism for furniture unit is provided which utilizes a single component for translating rotary motion of a tumbler cylinder of a key lock into reciprocating, linear motion of a pair of opposing lock rods. The mechanism includes a base having a pair of linear guide channels which are defined by spaced sidewalls, a lock rod received in each of the linear guide channels, each of the lock rods having a radially extending projection engaging the sidewalls of one of the guide channels, a key lock, and an actuator which is attached to a drive shaft connected to the tumbler cylinder of the key lock. The actuator includes a pair of arcuate channels, each of which is at least partially defined by spaced camming surfaces which engage opposing sides of the projections on the lock rods, whereby rotation of the actuator in one direction retracts the rods to the unlocked position and rotation in the opposite direction extends the rods to the locked position.

Abstract: A lock mechanism is provided which may actuate both a deadbolt and flush bolts in response to a single lock movement. The mechanism includes a dual element bolt throw and flush bolt actuator, which locks in place in the extended position if the end of the bolt is pressed inwardly. The throw includes a transfer mechanism which translates the horizontal movement of the bolt to vertical movement at the flush bolts. The flush bolts also include a mechanism to limit retraction thereof if the extending end of the flush bolt is exposed to inward directed force. The entire lock mechanism may be actuated by a standard cylindrical lockset having actuating jaws extending therefrom. The lock mechanism case may include an aperture therein, through which the handle housing extends, which aligns the jaws in the handle housing with the rear end of the bolt.

Abstract: This invention provides a tilt latch device including a housing containing a spring-loaded latch member disposed therein which is designed to selectively extend from the housing. The device includes a snap fastener disposed to secure the housing to a first surface of a window sash or panel. Windows including such a device are also disclosed.

Abstract: A backset adjusting device of a cylindrical door lock. This device free adjusts the backset of the door lock between the 60 mm backset and the 70 mm backset and lets the door lock be commonly used in the conventional doors regardless of the door types. A latch bolt extension slide coupled to a latch bolt has an axial guide slot. A retractor slide is coupled to the latch bolt extension slide so as to linearly reciprocate with respect to the extension slide by 10 mm. This retractor slide has an opened axial guide slit at its front section and a side guide projection movably received in the guide slot of the extension slide for guiding the axial reciprocation of the retractor slide with respect to the extension slide. A pair of hooking notches are formed on the rear section of the retractor slide. An outer cylinder is movably fitted over a rear section of an inner cylinder and coupled to the hooking notches of the retractor slide.

Abstract: A latch assembly wherein a retractor member conjointly lowers a stop which is preventing latch bolt retraction and rotates a cam which will retract the bolt. A deadlatch bolt stop, which limits the forward displacement of the deadlatch bolt relative to the latch bolt, can be brought into engagement with the latch bolt since it can deflect the stop, which is preventing latch bolt retraction, down out of its way.

Abstract: An automobile door lock, having a metallic base plate (2), which, preferably, has an inlet slot (1) for a lock retainer, further having lock elements, like a ratchet (3) and a ratchet pawl (4) disposed at the base plate, further comprising a lock mechanism having various operating levers (5), as well as a one-piece housing (6) made of molded fiber-reinforced synthetic material and which is firmly connected with the base plate (2) by bolts. The cost-effectiveness of this automobile door lock is enhanced in by the housing (6) is designed without a metallic cover plate the side opposite the base plate (2), and also in that all of operating levers (5) of the lock mechanism are carried by either the housing (6) or the base plate (2).

Abstract: An adjustable latch assembly which is to be operated by an operator assembly having a rotatable spindle including a half round actuator and a pair of connection stems which are to be inserted into the adjustable latch assembly, comprising a cover including a central opening for receiving the half round actuator, having a pair of stop surfaces for limiting clockwise or counterclockwise rotation of the half round actuator and a stem receiving hole in the end portion remote from the stop surfaces, a housing for supporting the cover for displacement from one backset location to a second backset location, a first stem hole aligned with the cover hole when the cover is at one backset location, a second stem hole, and a third stem hole rearwardly spaced from the second stem hole a distance corresponding to the backset difference, a latch-bolt head, a retracting assembly operable to displace the latch-bolt head including a displaceable retracting member having rearwardly extending legs for engaging the half round act

Abstract: A slam-capable rotary latch employs a single rotary jaw that is releasably retained in its latched position by a rotary pawl, with the latch having a pair of spaced housing side plates that sandwich the rotary jaw and the rotary pawl, with the side plates defining aligned first and second U-shaped notches that cooperate with a third U-shaped notch formed in the rotary jaw for concurrently receiving and latchingly retaining within the confines of the first, second and third U-shaped notches a suitably configured strike formation, with housing side plate portions that define a selected one of the first and second U-shaped notches being rigidified and strengthened by the close proximity presence to the selected U-shaped notch of a flange 1) that is formed integrally with the side plate portions that define the selected U-shaped notch, 2) that is connected by a tight radius bend to the side plate portions that define the selected U-shaped notch, and 3) that extends transversely so as to bridge between the pair of

Abstract: A door handle assembly for a motor vehicle which acts to preclude inadvertent unlatching of the door in response to a side impact. The door handle assembly includes a handle and a blocking member both pivotally mounted in an escutcheon and each including an actuator portion positioned in the window of the escutcheon and a stop portion positioned within the cavity of the escutcheon. The stop portions positioned within the cavity coact in the event of side impact to preclude inadvertent inertial pivotal movement of the handle to an unlatched position but depression of the blocking member actuator portion moves the stop portion of the blocking member out of the path of movement of the stop portion of the handle to allow the handle to be moved to open the door.

Abstract: A door lock includes a deadbolt assembly and a lock housing assembly. The deadbolt assembly has a bolt member which includes a metal inner sleeve, a metal outer sleeve fitted over the inner sleeve and made of a material which is different from that of the metal inner sleeve and which has anti-corrosion properties, and a security bar disposed axially in the inner sleeve. The lock housing assembly includes an exterior housing section with a cylindrical chamber that receives rotatably an exterior lock cylinder unit therein. The lock cylinder unit has a key-operated rotary plug with a rearwardly projecting spindle that is connected operably to the deadbolt assembly. An interior sleeve member is formed as a cylindrical wall with a front end which is secured to the rear side of the lock cylinder unit and a rear end which is formed with diametrically opposite notches. The deadbolt assembly extends through the sleeve member via the notches.

Abstract: An automotive door lock apparatus comprises a lock body having a latch for engaging with a striker and a ratchet for preventing the latch from pivoting in reverse direction, the lock body defining a cavity for receiving the latch and the ratchet, a spring arranged between the wall portion of the cavity and the tip end of the ratchet for resiliently contacting the ratchet to the latch, a cover plate mounted on the body for covering the cavity and preventing the spring from jumping out, and holding portions formed in the wall portion and the tip end. The holding portions having slightly smaller diameter than the diameter of the spring for temporarily holding the end of the spring.

Abstract: A deadbolt or auxiliary lock is disclosed which can be mounted in a small (11/2") or large (21/8") lock set hole. A reversible cast adapter is provided which has a plate portion, small and large diameter annular lips on one side and a small diameter lip on the other side with a torque limiting feature projecting axially from each small diameter lip.

Abstract: A vehicle door lock apparatus includes a body for being fixed to a mounting portion of a door, a latch mechanism disposed in the body, a case for being disposed between the mounting portion of the door and the body, and an actuating mechanism surrounded by the body and the case. The case is joined with a fixed side of the body which faces and is opposite to the mounting portion of the door so that seepage of water into the body and damage to the actuating mechanism does not occur.

Abstract: In a door latching and switch contact controlling device, an actuator having first and second radially extending angularly spaced apart members is mounted on a common shaft in a housing with a latching member for the member and actuator to rotate together. A striker fastened to a door strikes the first radially extending member when the door closes to turn the actuator so the second member rotates into an opening in the striker to thereby conceal the first member. An electroresponsive device positions a latching element into the path of a stop on the latching member when the device is energized, thereby preventing the actuator from turning reversely if an attempt is made to open the door.

Abstract: Objectional vehicle door opening and closing sounds are eliminated by dampening vibration in the vehicle door system. An integral dampener is positioned to engage the bolt of the door latch assembly reducing the resonation of the door opening's frame caused by release of the striker from the latch bolt. The integral dampener frictionally engages the bolt for an initial opening and final closing portion of the linear travel of the door. Once initial opening has occurred and the striker has returned to its normal door-open, no-load position, the integral dampener disengages from the bolt and the latch assembly operates in a conventional manner.

Abstract: A vehicle door lock apparatus includes a latch mechanism, a locking lever which permits the latch mechanism to be operated and prevents the latch mechanism from being operated and detecting member connected with the locking lever including a detecting shaft, wherein the locking lever is rotatably supported on the detecting shaft and the locking lever is rotated with the detecting member integrally about the detecting shaft.

Abstract: An automatic door latch has a case with a bolt movable within the case between a fully extended position in which the bolt extends forwardly of the case, a fully retracted position in which the bolt is within the case, and a partially extended position in which the bolt is positioned to contact a door strike. There is a spring which urges the bolt toward the fully extended position. There is a bolt operator for moving the bolt, against the spring, from the fully extended position toward a retracted position. There is a release mechanism which holds the bolt in the partially extended position and which is effective to release the bolt for movement, under urging by the spring, to a fully extended position, from the partially extended position, upon inward movement of the bolt when it is in the partially extended position.

Abstract: A motor-vehicle door latch has a molded synthetic-resin housing having a floor side plate, a perimeter wall projecting laterally from an inside face of the plate, and a cover plate. The housing is unitarily formed with a plurality of pivots. Mechanism inside the housing includes a latching fork, a latching pawl, and operating levers mounted on respective pivots. A metal reinforcing plate is imbedded in the floor side plate only in the region of the fork and pawl and is unitarily formed with upstanding tabs extending into and imbedded in the pivots of the fork and pawl only. The pivots of the operating levers are substantially wholly formed of the plastic of the housing.

Abstract: A door latch has a case and a bolt movable within the case between an extended position in which the bolt extends forwardly of the case and a retracted position in which the bolt is positioned within the case. A swivel is mounted in the case for turning movement and a link connects the swivel and the bolt whereby turning of the swivel moves the bolt between the extended and retracted positions. The swivel is movable relative to the forward end of the case for adjusting backset to any distance between defined backset adjustment limits. The bolt, link and case have cooperating portions thereof which hold the bolt in a fully extended position, resisting inward movement thereof except by turning of the swivel, at either limit of backset adjustment and at any backset adjustment position therebetween.

Abstract: A handle assembly, formed with a terminal flange, is adapted for flush installation in a panel aperture from the outboard side of the panel in a rock-in manner with the terminal flange overlying the panel outer surface. The housing has at least one inboard projecting stem receiving a one-piece clip through a hole in a retaining clip enabling a nut, upon being threaded on the stem, to hold handle assembly in the panel opening. The clip of the present invention is initially installed from the inboard side of the panel by means of upper and lower tabs adapted for manual push-on frictional engagement with associated upper and lower tongues projecting inboard from the handle housing. As a result of the clip tabs being manually engaged the installer has both hands free for threading a nut on the stem and torquing the nut down to complete the handle assembly installation. The housing tongues also provide a support function in that they prevent the clip from being distorted during the torquing operation.

Abstract: A door lock assembly includes an elongated latch bolt having an enlarged front end portion and a cylindrical rear end portion which is formed with axially spaced and aligned first and second protrusions that cooperatively define a rear engaging groove therebetween. The first protrusion and the front end portion cooperatively define a front engaging groove therebetween. A movable member has a vertical end plate transverse to the bolt and formed therethrough with an engaging through-hole through which the rear end portion of the bolt extends fittingly and rotatably. The end plate has an annular inner wall which defines the through-hole and which is formed with a radially extending notch that is sized to permit extension of the protrusions therethrough. The inner wall of the end plate is engaged selectively within one of the engaging grooves in a manner such that the notch is deflected from the protrusions of the bolt, so as to prevent axial movement of the movable member relative to the bolt.

Abstract: A latch assembly having an adjustable backset has a housing and a bolt having a length and being slidably disposed within said housing, said bolt assembly comprising a latch member, a draw bar, and a connector for connecting said latch member and said draw bar and for adjusting said latch member relative to said draw bar so as to adjust said length of said bolt assembly over a range including an extended length, a shortened length, and any length therebetween. The latch assembly may be used for any standard or non-standard backset within said range.

Abstract: A new latch assembly for a vehicle glove box door, or other locking device, wherein the door is to be held in a flush position relating to an adjoining panel surface. The latch assembly includes a freewheeling locking feature, an actuator member which is not sensitive to the striker positional variance, improved low handle opening effort. The latch assembly also include improved lock cylinder loading, and improved closing efforts by use of a molded urethane bumper. The latch assembly also has improved styling with a single color throughout using no metal parts which need lubrication, and the latch assembly unit is fully enclosed so that no moving parts are visible and the scorpion tail has been not used.

Abstract: A face plate includes a tubular member for freely and rotatably receiving a latch housing and having a first end and a second end. An opening is formed in the first end through which a latch bolt passes and has a diameter smaller than an outer diameter of the latch housing. The second end of the tubular member has an inner diameter smaller than the outer diameter of the latch housing. A flange extends radially and outwardly from the first end of the tubular member. The tubular member further has a plurality of axially extending projections formed on an outer periphery thereof.

Abstract: A deadbolt latch assembly capable of accommodating both rectangular faceplates and circular faceplates. The latch housing assembly is provided with a semi-permanent rectangular faceplate assembly attached thereto, but which is removable with a prying tool to allow the housing to accommodate an alternative faceplate such as a circular faceplate. The housing is manufactured of a thick walled steel casing to enclose and retain not only the latch but the latch extension as well, to thereby prevent the latch extension from flexing about the latch-extension joint.

Abstract: A locking device for a rounded wall casket is sealable or weldable to the rounded wall casket, while maintaining the aesthetic appearance of the burial casket due to attaching the locking device from the inside of the casket. The sealable locking device has a curved end, interior cylinder with a threaded portion to provide the mounting structure for locking a casket.

Abstract: A snap in latch assembly for selectively locking a movable member to a fixed member and preferably for locking double hung windows includes a keeper which would be secured to the hollow rail forming the frame of the fixed sash. A latch housing would be secured to the hollow rail forming the frame of the movable sash. Both the keeper and latch housing are secured to their respective rails in a snap in manner without the use of fasteners such as rivets or screws. The keeper includes at least one retainer pin having an undercut for snapping into a slot in its rail and includes at least one anchor member for engagement with the rail when the keeper is slid to its mounted position. The latch housing includes at least one retainer arm having an undercut for snapping into a slot in its rail with at least one locator bar engaging the rail when the housing is slid to its mounting position.

Abstract: According to the invention, a vehicle body has a latch assembly for latching and unlatching a pivotally movable closure panel carrying a striker. The latch assembly has first and second throats for alternately receiving the striker and a latching means adapted for alternate assembly to capture the striker in the first throat and alternately in the second throat. In accordance with the invention, a forkbolt lever is pivotally supported on a housing and is adapted for alternate assembly being mountable for rotation to capture the striker either in the first throat or alternately in the second throat. The detent lever is pivotally supported on a housing and is adapted for alternate assembly being mountable for rotation to selectively engage the forkbolt lever for capturing the striker either in the first throat or alternately in the second throat.

Abstract: A slam-capable rotary latch employs a single rotary jaw that is releasably retained in its latched position by a rotary pawl, with the latch having a pair of spaced housing side plates that sandwich the rotary jaw and the rotary pawl, with the side plates defining aligned first and second U-shaped notches that cooperate with a third U-shaped notch formed in the rotary jaw for concurrently receiving and latchingly retaining within the confines of the first, second and third U-shaped notches a suitably configured strike formation, with housing side plate portions that define a selected one of the first and second U-shaped notches being rigidified and strengthened by the close proximity presence of a flange 1) that is formed integrally with side plate portions that define the selected notch and 2) that extends transversely to bridge between the housing side plates at a location near the first and second U-shaped notches.

Abstract: An improved anti-theft device for use with a vehicle door locking mechanism, the latter having a sill knob rod rotatably connected to a locking lever so that actuating the sill knob rod moves the locking lever to either lock or unlock the locking device, includes a housing to cover and protect the locking mechanism. The tube is joined to the housing and surrounds the sill knob rod engaged to the locking lever. The periphery of the sill knob rod is spaced away from the inner wall of the tube over the full length of the sill knob rod enclosed within the tube.

Abstract: A latch assembly for mounting in a bore extending in from a side edge of a door has a backset adjustment for different distances between rotational axis of a handle or keylock and the side edge of the door. The bolt has a concentric aperture into which a bolt adjuster slidably mates with a close tolerance to prevent lateral movement between the bolt and the bolt adjuster. The latch assembly comprises a casing assembly having a bolt assembly longitudinally reciprocal therein between a retracted position and an extended position, the bolt assembly including a bolt with a cylindrical aperture therein, the bolt rotatable and reciprocal relative to a non-rotational cylindrical bolt adjuster and having a sliding fit thereon. A helical groove around the surface of the bolt adjuster engages with an internal projection in the bolt.

Abstract: A lock assembly having a housing and a plunger assembly guided for movement relative to the housing between a latched position and an unlatched position with the plunger assembly and housing in assembled relationship. A tab is provided on one of the plunger assembly and housing and is repositionable from an assembly position into a holding position. With the tab in the assembly position, the plunger assembly and housing can be placed in and taken out of, their assembled relationship. In the holding position, the tab maintains the plunger assembly and housing in assembled relationship.

Abstract: An automotive door lock device comprises a lock proper having a latch mechanism installed therein. A main cover plate is fixed to the lock proper. The main cover plate has therein an interchanger mechanism operatively engaged with the latch mechanism. A socket structure is defined by the main cover plate. The socket structure has a terminal member of the interchanger mechanism exposed to an interior of the socket structure. An auxiliary cover plate has a shape to be detachably held by the socket structure and has an actuating member installed thereto. The actuating member is brought into an operative connection with the terminal member when the auxiliary cover plate is properly held by the socket structure.

Abstract: A door latch has an actuating mechanism which retracts the latch tongue by a small amount of rotation of a doorknob. The actuating mechanism includes a wheel rotated by the knob which has a projecting tooth engaging a lever that pulls a plate connected to the latch arm. The lever arm is longer than the tooth.

Abstract: A structure is provided to prevent access to the latch pin of a dead bolt or latch lock. For dead bolts, a sleeve is provided which is received over the bolt frame in which the latch pin reciprocates. The sleeve is secured to the frame in such a manner that the latch pin cannot be accessed without removing the sleeve. For latch locks, a sleeve is provided with an extending tongue, which tongue covers the ears of the latch pin and denies access to the ears.

Abstract: A surface mounted slide bolt including a base, a strike, a bolt and a plug for locking the bolt in either extended or retracted positions and for disposing the bolt in position relative to the base for assembly and disassembly. The bolt includes tongues receivable in notches of L-shaped flanges of the base.

Abstract: A door latch has a housing for installation in a prepared cavity at a door edge and has interchangeable faceplates for finishing the door edge. The interchangeable faceplates each have an opening for permitting extension and retraction of a latch bolt, have a peripheral shape required for compatibility with the prepared cavity, and have features providing for releasably securing the faceplates to the housing and to the door edge. This permits installation of door latches regardless of the door preparation by merely interchanging the faceplates to match the door preparation.

Abstract: A latch for selectively connecting a sash of a double-hung window to a slide track in a window frame, including a lever including a gear at one end, a latch housing mountable to the sash, the housing including means for pivotally supporting the lever, and a locking member movable between a locked position securing the sash to the track and an unlocked position releasing the sash from the track. The locking member includes a tongue projecting from the latch housing when the tilt latch is in the locked position and lying within the latch housing when the tilt latch is in the unlocked position, and a rack engaging the lever gear to move the locking member to locked and unlocked positions in response to pivoting of the lever. The lever gear includes a disk formed along one side, and the locking member includes a channel along the rack receiving the disk during pivoting of the lever.

Abstract: An improved double latch dead bolt lock operating mechanism wherein the dead bolt has a keyway engaged by a key for guiding the latching and unlatching movement of the dead bolt but allowing vertical movement of the dead bolt for accommodating any undesired engagement of the operating cam with an improper portion of the dead bolt. The dead bolt is resiliently urged vertically toward the operating cam to return the dead bolt to its normal vertical position after the cam to passes that improper portion of the dead bolt.

Abstract: A lock-end tube for receiving the outer end of a locking rod of a locking apparatus for a casket lid is mounted on a curved end of a round-cornered beveled casket by means of a structure which is positioned in an opening in the curved casket wall and clamped in position by clamping members on each side of the curved wall, these members having confronting end surfaces conforming to the shape of the curved wall.

Abstract: A lock having a counterweight connected through a lever to a spring-actuated lock bolt on a safe to balance out any inertial forces tending to move the bolt out of its locking position when the safe is struck a heavy blow. A latch forming a part of the lock latches the bolt in its locking position when an attempt is made to dislodge or destroy the lock case or a part thereof. A selectively usable bolt part is effective to change the lock from a deadbolt type to a slam-bolt type.

Abstract: A handle assembly, comprising a release handle mounted within a recess of the handle housing, is adapted for installation in a vehicle door panel aperture from the exterior thereof. The housing is formed with a terminal flange provided with an upper omitted segment extending longitudinally between a pair of upright handle support brackets. An elongated retaining rib is formed between the brackets having an outboard face offset a predetermined dimension inboard from the plane of the terminal flange backside. The housing is mounted in the panel aperture in a rocked-in manner with its terminal flange overlying the aperture recessed flanged border while the retaining rib face locates to the inboard surface of the flanged border. The housing central body has an inboard projecting stem adapted to support a clip whereby the clip, when fixed to the stem by a fastener, locks the handle assembly in the panel aperture.

Abstract: A latch unit having a cylindrical housing consisting of two half portions for containing a latch bolt, a moving member to retreat the latch bolt and a recovering member to push the latch bolt forward to an original position in which the latch bolt extends out of the housing.

Abstract: A hidden lock for a jewelry or treasure box which is equipped with a flexible metal wire having one end thereof projected from an opening disposed at the bottom of the front side of a lower case; and a lock plate having an M shaped recess disposed thereon being disposed on the inner surface of the lower case of the box for engagement with the projected end of the wire which can be slidably guided through the recess. The cover case is associated with the lower case by means of a pair of spring biased hinges so that the cover case can be automatically opened as the cover case is pushed downward, permitting the flexible metal wire to be disengaged with the M shaped recess of the lock plate.

Abstract: A latch includes a housing and first and second latch arms. Each latch arm defines a latching end, and the arms are pivotable between a latching position and a release position. A rotatable cam longitudinally shifts a latch arm follower, and the latch arms define bearing surfaces which engage the latch arm follower. The housing includes first and second housing parts that are formed with the same dies or molds.

Abstract: A handle housing intended for attachment on a vehicle door panel is of injection molded plastic construction and has a base adapted to engage against the surface of the door panel. The housing carries at least one anchor leg, and preferably several, which project from the base and extend through registering apertures provided in the panel. Each of these anchor legs has a foot at the end thereof which is adapted to engage and underlie the underside of the panel when the housing is slid longitudinally along the surface so that the foot will engage with the underside of the housing and thereby prevent the housing from being pulled away from the panel. The housing also has a plurality of locking legs projecting from the base and extending through registering openings in the panel.

Abstract: A tubular door lock making use of two pairs of motive teeth in a pulling plate for a two-tooth gear to selectively mesh with for an motive action. The gear is confined within a hole cut in a moving shell, which can move outside along the assembling plates and be fixed to keep a hole in it to exactly face against a hole in the assembling plates so as to enable the foot post of the door lock to penetrate through the both holes, whether this lock is adjusted in the short or in the long size.