Abstract: A lock protector (1) for the barrel (17) of a key operated lock (2) which comprises a sleeve (3) to fit over the barrel (17). The sleeve (3) has a rotatable keyway protector (7) located adjacent the keyway (6) of the lock (2), the keyway protector (7) having a slot (10) therein which aligns itself with the keyway (6) for use. The width of the slot (10) together with the distance between the external portion of the slot (10) and the keyway (6) prevents objects other than the correct key shank from being inserted within. The lock protector (1) is also provided with a retaining means (4) to prevent longitudinal movement of the barrel (17) within the sleeve (3) once assembled.

Abstract: A locking device such as a lock, espagnolette, espagnolette-lock and the like comprises a headpiece having an inner face onto which is inserted at least one casing comprising two parallel walls. The assembling between the headpiece and the casing or casings is obtained by means of riders in the form of profile lengths with a "U"-shaped cross-section comprised of two parallel wings and a transversal wall made integral with the inner face of said headpiece, both parallel wings of the riders forming means for seizing each of the parallel walls of the casing or casings.

Abstract: A lock construction including an outer case having a central opening that receives a cylinder. A plurality of plate-type tumblers are mounted for sliding movement within a passage in the cylinder and the tumblers have aligned slots to receive a key. The side wall of the case is provided with a longitudinal opening or window and a pair of shoulders border opposite sides of the opening. A cover encloses the opening and has a pair of side flanges that removably engage the shoulders of the case. In assembling the lock, the tumblers are inserted into the cylinder through the opening in the case and the cylinder is then rotated to effect engagement of the tumblers with the ward in the case, which is spaced 90.degree. from the opening, and the cover is then snap-fitted onto the case. By removal of the cover, the tumblers can be readily removed from the cylinder.

Abstract: An actuator assembly is mounted in a housing and is actuatable by a solenoid carried in the housing. The housing also includes, integral therewith, a card reading arrangement.

Abstract: A key-in-knob type cylinder replacement system comprises a replacement cylinder having a generally cylindrical shell and a plug having a keyway and housing pin means to prevent the rotation of the plug. A false bible dimensioned to be generally commensurate in size and shape to the projecting pin housing of the cylinder to be replaced is mounted to the cylinder shell. An adaptor means for actuating the latch assembly in response to rotation of the replacement plug is secured to the replacement cylinder plug by means of a clip. A replacement kit provides a plurality of false bibles and adaptor means, each of which is adapted to be mounted to the plug of the plug-shell combination to form a replacement for a conventional key-in-knob cylinder.

Abstract: An axial-split pin tumbler-like lock mechanism for a pop-out lock of the type including a lock cylinder, a forwardly disposed operating spindle part rotatable in the cylinder, a rearwardly disposed sleeve held stationary in the cylinder and adjoining the operating spindle part defining a transverse interfacial plane, the operating spindle part including a shaft extending axially through the stationary sleeve, key operated spring pressed axially movable split-pin tumblers carried in bores in the operating spindle part and the stationary sleeve part and movable into positions ultimately serving to secure the operating spindle part and the stationary sleeve part against relative rotation and to free the operating sleeve part for rotation to operate the lock mechanism with the insertion of the proper key, includes a bolt holder removeably attachable with the stationary sleeve part and disposed rearwardly thereof, the holder having a bolt race extending transversely therein, and a lock bolt mounted in the race for

Abstract: The backset of a deadbolt lock may be adjusted selectively between 23/8" and 23/4" by manually shifting a spring-loaded pin which extends through vertical slots in the lock bolt, U-shaped slots in the driver bar and inverted L-shaped slots in the lock case. The pin also connects the driver bar to the bolt and causes the bolt to move between extended and retracted positions when the operating spindle of the lock is turned.

Abstract: A key operated doorlock, which may incorporate a deadbolt, has a bolt housing that is mounted on the exterior of the door and is held there by being fastened to a spacer disposed within the door and a mounting plate at the interior side of the door. The main bolt is locked in place with a secondary locking apparatus which may include a barrel lock which operates a bolt which cooperates with a keeper opening in still another bolt. The latter engages a keeper opening that forms part of the housing. A lever system is provided which permits operation of the third bolt when permitted by the state of the second mentioned bolt.

Abstract: A lock assembly of the type mounted on a door or like closure structure and including two lock cylinders each at least partially encased and surrounded by a casing structure each of which has reinforcing means formed thereon so as to prevent collapse or destruction of said casing structure upon receiving an extreme force such as a blow with a hammer or the like. An activating structure is interconnected between a bolt element and each of the lock cylinders such that rotation of either lock cylinder, as by a key, causes at least partial rotation of the activating structure and linear movement of the bolt element into either an extended or retracted position.

Abstract: A rim cylinder protection unit includes a single flat thick solid hardened steel guard plate counterbored to receive the rim of the cylinder. The cylinder is secured to the plate and prevented from rotation by cooperation with a cylinder retaining plate attached to the backside of the guard plate. The thick solid steel guard plate has heavy mounting studs welded by hardened material to the plate to extend through the door and these studs are protected by hardened steel sleeves to prevent burglars from chiseling through the studs. A replaceable cover conceals the rugged steel guard plate.

Abstract: By providing a key actuated tumbler, rotationally journaled in a housing in juxtaposed spaced relationship to a pair of contacts, one of which comprises an elongated resiliently flexible member, with the tumbler incorporating actuating means for controllably moving the flexible contact from its first non-conductive position to its second conductive position, an inexpensive, easily manufactured and installed electric, key-controlled switch lock is achieved. In the preferred embodiment, the tumbler is mounted in a housing which incorporates a contact holding zone for positioning and maintaining the tumbler and the flexible contact in juxtaposed spaced cooperating relationship with the entire assembly directly mountable to a printed circuit board for initiating and terminating the flow of electric current thereto.

Abstract: A timelock device comprising a mounting plate fixed at a location where the device is to be used, and a separate housing provided with a channel defining a passageway for the locking bolt of a door vault lock. The housing carries a locking pin, a timer and a mechanism operable by the timer means for moving the locking pin through the channel. Fastening means are used for detachably connecting the housing to the mounting plate. This device is particularly interesting since it allows for easy and accurate replacing of the operational parts of the device by replacement parts when the operational parts must be serviced.

Abstract: In a door lock with spring bolt and dead bolt the lock follower body injection molded from thermoplastic synthetic resin is rotatably mounted in the lock case and resilient in itself without bias and without being influenced by any spring force when by radial movement of the lock follower body a plurality of legs extending therefrom bears against retaining pins and develops spring action by bending.The required spring load on the tumbler is effected by the provision of a free leg at the tumbler which rests unbiased against a stop pin and resiliently bends upon actuation by the key. The mounting of a door fitting at the door panel is facilitated by bores through sleeves provided in the lock case.The inexpensive fabrication permitting at the same time a maximum possible degree of dimensional precision is achieved by making both the lock case and the interior parts from thermoplastic synthetic resin containing no plasticizer. Preferably a polyacetal is used for the interior parts.

Abstract: A latchbolt rim lock of simple sturdy construction with smooth effective operation and long life. A die cast case forms guides for a bolt having a head and draw plate, and has U-shaped ribs on its rear wall to define seats for springs biasing the bolt forward, in which the springs are held by a rear flange on the back plate. A rearward boss on the front wall forms a retraction stop for the bolt and contains a headed holdback plunger which is manually movable into a hole in the bolt where it is latched by its head to hold the bolt retracted. The draw plate contains a cam opening which defines opposite cam faces which are engaged by a crank pin to retract the bolt. The cam opening also has a central pin-passing throat which allows cammed retraction of the latchbolt relative to the crank pin, and defines supplemental cam faces for moving the bolt to release the holdback plunger.

Abstract: The present invention relates to a door handle lock and latch mechanism for a corrugated roller shutter door wherein the door handle is situated some distance up from the bottom of the door.The door handle and lock is situated in a corrugation which is open to the front face of the door and the latch mechanism is located in an adjacent corrugation(s) open to the rear face of the door. The latch mechanism attaches to the lock mechanism through an opening in either or both of the top or bottom wall of the corrugation in which the lock is situated.

Abstract: A protective door shield and mounting for a lock, particularly a mortise lock or double lock, including a generally U-shaped plate that engages the swingable edge of the door in the region of the lock and a plurality of interchangeable inserts seated in openings provided in opposing side panels of the plate. Apertures in the inserts accommodate door knob shanks, lock cylinders, thumb turns and the like. The shield permits the substitution of a lock having a different arrangement of apertures without replacing the door, while it strengthens the door and provides a convenient push plate. Since the inserts are interchangeable, a standardized shield may be readily adapted for use with a wide variety of locks. The lock face plate is received by a recess in the shield and can be surrounded by a trim plate, if required.

Abstract: A lock is provided having a cover and a casing in which the cover is normally removable from the lock. The casing has an opening to receive a bolt therethrough, and means on the cover to engage the bolt whereby the cover cannot be removed from the casing when the bolt is in its advanced position.