Abstract: A locking device for a door. The device includes at least one locking element movably mounted on the door. The door is locked by extending each locking element along one diagonal line of the door until the outer edge of the element enters into a recess in adjacent sides of the door frame. The door is unlocked by retracting each locking element along the diagonal line to the point where the outer edge of the element has exited from the recess and the inner edge is resting on the other diagonal line of the door.

Abstract: A locking bolt system for locking shipboard water tight doors, hatches and cuttles comprising plural bolts with racks thereon driven by pinions rotated by a drive shaft. Rotation of the drive shaft is controlled by a contoured locking disk which is locked and unlocked by two lugs each operated by an independent lock cylinder.

Abstract: An improved locking system for furniture of the type having a plurality of drawers, at least one of which is locked from a remote position through a keyed operator module by translating a slide bar to interfere with one of the drawers in a locked position. A flexible, rotatable cable extends between the operator module and a connector/actuator module associated with the slide bar. The connector/actuator module comprises a crank with an integral shaft and rotatable, eccentric lug which is directed in an L-shaped slot in a slide plate. Rotation of the cable imparts translatory movement to the slide plate which is followed by the slide bar. In another aspect of the invention, the operator module, which is geared to the cable through a translatable rack, causes extension of a bolt on the rack to lock a second drawer simultaneously as the slide bar realizes a locked position.

Abstract: This bolt lock is for a sliding patio door. Primarily, it consists of a housing containing a lock mechanism for the outward and inward travel of a pair of toothed lock bolts, which are slideably received between a pair of side frames of said housing. It also includes a sector gear and a small gear, which serve to advance and retract said pair of toothed lock bolts, simultaneously, when the lock cylinder of the combination is turned by a key.

Abstract: A door-locking device is described including a plurality of locking bars drivable to a locking position projecting from the sides of the door into the door frame by means of a rotatable drive gear and a plurality of gear-cam segments, one for each locking bar. Each segment includes gear teeth formed on a first portion of its outer circumference meshing with the teeth of the drive gear, and a cam surface formed on a second portion of its outer circumference engageable by a cam follower carried by its respective locking bar. The locking device further includes a key-operated locking cylinder and an overlying protector plate having an opening covered by a disc formed with the key slot, the disc being yieldingly secured to the protector plate to thereby prevent a drill from penetrating same into the lock cylinder.

Abstract: In a door lock with two case parts disposed in parallel opposed relationship the follower designed as an injection molded synthetic resin part is resilient in itself owing to a supported follower portion, the spring for the spring bolt and for the tumbler being formed by a base structure (42, 42a) and the support for a fitting to be mounted later on being offered by sleeves (14, 15) which are provided above and below the follower both at the lock case bottom and at the inside of the lock cover.The spring-like action of the follower is achieved in that the bent follower leg (26) slidingly bears against an inclined supporting surface of an abutment (27) while curving inwardly or outwardly upon radial movement of the follower.Good fit of the lock in the pocket provided in the door is achieved by ribs (11, 12, 13) on the outer surfaces of the lock case.

Abstract: A lock of the type having a plurality of locking bolts, having outer ends extending through openings in the door and inner ends located close to one another inside the door, and having a disc member, with arcuate slots and operating pins extending into the slots, and connecting with the inner ends of the bolts so that rotation of the disc in one direction will cause outward movement of the bolts, and rotation of the disc in the other direction will cause inward movement of the bolts, the lock having an operating lever swingably mounted adjacent the disc, and having one end swingable towards and away from it and connecting means between one end of the operating lever and a point on the disc spaced from its center of rotation, whereby swinging of the lever in one direction will be transmitted to the disc as a rotary movement in one direction, and swinging movement of the lever in the other direction will cause rotation of the disc in the other direction, and having means urging the lever in one direction, the l

Abstract: There is described a locking device for closing panels, particularly doors or windows, comprising a dead lock and a spring lock biased by spring means to a projecting position relative to the panel, as well as a cylindrical safety block, which comprises a driving arm with on the one end thereof at least one groove into which is engaged the cylindrical safety block projection during the rotation thereof by means of the key, in such a way as to impart to said arm a translation movement, said driving arm being connected with the other end thereof to a plurality of locking members which are guided inside the panel, so as to cause the entering into or the release from corresponding keepers under the action of the translation movement thereof.

Abstract: A safety or "dead-bolt" lock includes a lockably releasable sliding bolt assembly of a first magnetic polarity. The keeper element, which is adapted to be mounted on to a jamb is of a second or opposite magnetic polarity to magnetically attract the bolt. A key lock assembly is used to release the sliding bar from movement. A cover is slidably movable over the entire lock assembly to prevent unauthorized dislodgement.

Abstract: A locking arrangement using an actuating gear mounted on a cylinder lock for turning a gear wheel having locking bolt means linked thereto for movement to locked and unlocked positions responsive to movement of the cylinder of the cylinder lock. A spring-biased latch normally in the locked position is further provided which can be moved to the unlocked position, when the locking bolt means is in the unlocked position either by separate handle or by the further movement of the cylinder.

Abstract: A two dead bolt door lock is disclosed wherein the bolts are transversely disposed and wherein the bolts are disposed one behind the other in the locked position so as to provide a secure locking mode. When door mounted, and in the locked position, a vertical bolt is disposed on the inside of the door adjacent the jamb and a horizontal bolt is mounted in the jamb. Attempts to jimmy the horizontal bolt in its line of least resistance are frustrated by the presence of the vertically locked bolt acting against the jimmying force. The locks are both operated by a single key actuated cylinder and/or hand knob through a common connection rod with coordinated cam actions. In another embodiment, keys may be employed on both the inside and the outside of the door.

Abstract: A locking device mountable within a door in a door frame, comprises a casing including a pair of side plates, a toothed-wheel rotatably disposed between the side plates, and a plurality of locking bars coupled to the toothed-wheel and projectable thereby into locking engagement with the door frame. The toothed-wheel is formed with a cam surface for each locking bar, each locking bar carrying at its inner end a cam follower movable along the respective cam surface of the toothed-wheel. The side plates are formed with guiding slots for each locking bar guiding the movement thereof such that the rotation of the toothed-wheel in one direction projects the outer ends of the locking bars from the door into locking engagement with the door frame, and the rotation of the toothed-wheel in the opposite direction withdraws the locking bars into the door.

Abstract: A locking arrangement for doors and the like comprising a key-operated cylinder lock mounted in the door or the like and extending at both surfaces, to be operated by a key, an actuating gear keyed to the cylinder of the lock, which by means of a gear wheel and curved links is adapted to move at least one elongated bolt linearly.

Abstract: The locking device includes a support having a first plate rotatably mounted thereon. Four radially extending locking bars are rotatably mounted on the first plate such that the rotation thereof moves the bars between locked and unlocked positions. A second plate movably mounted on the support between first and second positions is provided with means engagable with the first plate to prevent the rotation thereof when the second plate is in the first position. A projection is mounted on the lock cylinder and is movable with respect thereto along an arcuate path upon actuation of the cylinder. The projection is engagable with the given portion of the first plate to rotate same as the projection is moved.

Abstract: A key-operated door locking device includes a conventional rim lock adapted to be mounted to one side of the door and having a bolt projectable and withdrawable with respect to the door frame by means of a dog carried on the lock cylinder and rotatable by the insertion and rotation of the proper key. The locking device further includes a coupling between the cylinder dog and a rotatable member eccentrically mounting three pivotable rods extending completely across the door so as to be projectable and withdrawable from the three remaining sides of the door, the coupling being effective, upon the rotation of the cylinder dog by the proper key, not only to cause the bolt to be projected into or withdrawn from its respective recess, but also to cause the rotatable member to be rotated and thereby to project or withdraw the rods with respect to their respective recesses.

Abstract: A locking structure for use with a door equipped with a latching member capable of being linearly moved in latching and unlatching the door can be constructed so as to utilize a control part secured to the latching member. Openings are provided in the control part and in the door in positions in which these openings are aligned when the latching member is in a latched position. A lock mechanism including an end flange may be inserted through the openings when they are aligned so that the flange fits against the exterior of the door. This lock mechanism includes a movable retainer which can be moved by appropriate actuation of the lock mechanism so as to extend outwardly from the locking mechanism in such a manner as to engage the control part. When this retainer engages the control part the locking mechanism is secured in place in such a manner that the latching member cannot be moved so as to unlatch the door. A protective structure is preferably used on the door around the opening within the door.

Abstract: Double cylinder door lock which operates a ceiling- and/or floor-socketed lock bolt which can be added to inner face of already hanging door. Either or both operating cylinders can be key-operated pin tumblers.

Abstract: Double cylinder door lock which operates a ceiling- and/or floor-socketed lock bolt which can be added to inner face of already hanging door. Either or both operating cylinders can be key-operated pin tumblers.