Abstract: The locking device is provided with a jaw for receiving a swinging pin or trunnion, e.g. on the side or tail board of a truck or lorry, as well as with a bolt for the jaw opening. It also has a pivotably mounted claw movable by the bolt by means of a cotter gear and this claw grasps said pin as soon as it is in the pivoting region of the claw and forces it into the jaw. The bolt is advanced synchronously with the claw movement. The swinging pin is held by the bolt with supporting of the claw in the jaw.

Abstract: A locking device has a slide accommodated in a stationary casing and spring biased in the direction causing it to project out of said stationary casing. When the slide is retracted into said stationary casing, a locking arm which is pivotally coupled to the slide is turned to a position facing the exposed end of the slide where it catches an engagement member between itself and the end of the slide. The slide can be locked in a retracted state by a cam member. When the slide is released from the locked state by the cam member, the locking arm can be brought away from the end of the slide.

Abstract: A pressure-resistant locking mechanism for locking a door of a switch cell accommodating a switching device includes two pivotable locking bars positioned in hollows formed by U-shaped door edges and U-shaped portions of the wall of the switch cell at a hinge side of the door and a closing side of the door. The locking bars are pivoted between a locked position and a released position by pivoting levers against the forces of respective springs. The springs always urge the locking bars to the rest position.

Abstract: A multiple-bolt locking mechanism particularly for use with sliding doors having a narrow stile frame movable into closed engagement with a tubular thin walled jamb frame structure and which comprises a vertically spaced upper main locking unit on the door narrow stile frame having a hook-type bolt actuatable by a key mechanism between an unbolted position and a dead-locked bolted position, a lower slave lock unit on the door narrow stile frame having a hook-type bolt, and a upper slave header locking unit, having a longitudinally reciprocable bolt for bolting engagement with door frame header keepers respectively at a door fully closed position and a door partially open position. The hook-type bolts are each movable into hooked bolted relation with a relatively thin wall portion of the jamb wall surrounding a bolt receiving opening therein and which is peripherally reinforced by being sandwiched between an associated inner backup steel plate member and an outer trim steel plate member.

Abstract: A multi-point closure control mechanism or lock especially designed for use with rear and/or side doors of a closed body highway truck, particularly a so-called panel truck, and for use with doors of military vehicles. The closure control mechanism comprises two dead bolts, slidably supported in suitable brackets adjacent to the upper and lower edges of a door near its free vertical edge, that engage keepers or catches in the form of plates on the vehicle body. Each bolt has a free running roller therein to facilitate entrance and retraction of the bolt into and out of engagement with its respective keeper or catch. The dead bolts are connected by rod members to pivots eccentrically located on a lock operating member rotatable in a frame member fixed to the door intermediate the bolts. The operating member also includes a cylindrical rod-like projection extending normal to the free edge of the door when the bolts are engaged with their keepers or catches at the top and bottom of the door.

Abstract: A lock mechanism includes a lock case and a sliding bolt which is operated by a pair of link members which are mounted within the lock case. The sliding bolt has a hollow portion and carries a pair of pivotally mounted dead latches. When the sliding bolt is fully extended from the lock case, the dead latches swing out to engage a door jamb. When the sliding bolt is retracted into the lock case, the dead latches pivot into the hollow portion of the sliding bolt.

Abstract: A latch mechanism for storm doors, screen doors and the like. A pivoted latch is movable to and from an operative position in which to engage a keeper to maintain the door closed. The latch is moved away from operative position by a pusher assembly. When the door knob is turned, cam surfaces between the door knob and pusher assembly effect movement of the pusher assembly necessary to move the latch away from operative position.

Abstract: A portable enclosure for housing test equipment to test circuitry in a card cage rack employs a combined latch and support system which includes a bracket member retained in the enclosure and movable through an aperture in the enclosure to an extended position for attaching the enclosure to the card cage rack. The bracket member is movable back through the aperture to a retracted position within the enclosure to latch the enclosure closed.

Abstract: Actuating mechanisms (106 and 122) for latching and unlatching an aircraft plug-type door (50) which is laterally and vertically translatable along tracks (55, 56 and 60) for movement into and out of an ingress/egress door opening (51) formed in the aircraft fuselage (52) and vertically along a path following the interior contour of the fuselage (52). The interior actuating mechanism (106) includes an interior door handle (99) mounted in the fuselage (52) adjacent the ingress/egress opening (51) and swingable between first and second positions, with the interior door handle (99) being operably associated with locking means (119, 120) for locking the door (50) upon closure thereof and for unlocking the door (50) preparatory to opening thereof.

Abstract: A latch assembly for a hinged double gate structure including a pair of hinged gates swingable to and from a closed position wherein the gates are disposed in substantially coplanar relationship with a vertical edge of a first gate adjacent to a vertical edge of a second gate. The latch includes a normally generally vertical latch rod having an upper end. A mounting bracket slidably receives the rod and attaches the bracket to the edge of the first gate with the rod extending along the edge thereof. The rod is restrained from rotation on its longitudinal axis. A latch yoke includes a pair of spaced yoke arms and is pivotally connected to the rod on a pivot axis transverse to the rod for pivotal motion of the yoke between a gate latching position wherein the yoke arms extend transversely of the rod and straddle the edge of the second gate and a gate releasing position wherein the yoke arms extend generally longitudinally of the rod.

Abstract: A panic exit door locking mechanism in which a manually operable panic exit actuator device is mountable on the inside face of a hinged door having a tubular narrow stile frame along its swinging edge; top and bottom adjustable bolt mechanisms at the upper and lower ends of the frame are connected by length-adjustable rod structures, concealed in the narrow stile frame, with a pair of gear connected actuating levers that are operable by means of a drive shaft having a slip-joint connection with an actuating shaft of the panic exit device. The top bolt mechanism includes a keeper secured to an exposed wall of a door frame header by screw actuated inner and outer clamping members. A latching member carried by the door is movable into a keeper latching position when the door is closed, and to a keeper non-latching position when the door is opened. The top bolt is utilized to dog the latch in its keeper latching position.

Abstract: An articulated linkage locks the various access panels, covers, and plates opening into an engine and its accessories. A spring loaded shaft is used to drive a bell crank and a set of catch bolts. Each catch bolt is matched with a catch plate joined to one of the panels, covers and plates granting access to the engine and its components. A pair of doors covering the instrument panel is used to reposition the spring loaded shaft and bell crank. Locking the doors together therefore locks the catch bolt and catch plates together in one stroke and with one lock.

Abstract: A retainer plate is pivotally mounted on a panelboard cabinet door lock housing, which carries a latch for locking the door. A detent on the plate engages in a rabbet opening to enable limited opening movement of the door in response to the pressure developed by arc gases generated by fault currents passing through a tripped circuit breaker in the panelboard cabinet. For ordinary opening movement, the lock latch is manually operated to pivot the retainer plate and disengage the detent from the rabbet opening.

Abstract: A vertical edge of a sliding door has a cavity forming a housing for a bolt. One or two angle-shaped latch leaves are located at a side or opposite sides of the bolt, each leaf being pivotally mounted in the housing for swinging about an axis generally aligned with such door vertical edge. Outward sliding of the bolt swings the latch leaf or leaves outward to lock flanges on the leaf or leaves in a catch carried by a frame.

Abstract: A locking mechanism for lids, hoods, flaps and/or doors, especially in motor vehicles, which cooperates with a cylinder lock whose lock cylinder is provided with a lock part adapted to be pressed-in against the force of a spring. The lock part includes, at its cylindrical outer surface, a pressure pin which is swung by rotation from an operating position to a non-operating position. In addition to the pressure pin, a lug is arranged at the outer surface of the lock part adapted to be pressed-in. The lug is operatively connected with an additional locking mechanism in such a manner that the additional locking mechanism becomes operable only over a limited rotary range of the lock cylinder adjoining the inoperable position of the pressure pin--as viewed in the locking direction.

Abstract: A burglary proof door, especially for a residence, comprising a frame formed of metal hollow sections or profiles and a door faced with coverings and assembled together from metal hollow sections or profiles. In its closed position the door is guided both at its hinge side and lock side throughout its entire height in substantially U-shaped guides provided at the frame. The door part guided at the lock side in the frame comprises two rails movable transversely with respect to the direction of opening of the door and extending over the entire door height. The hinge side outer edge of the door is bevelled or tapered throughout its entire height and the substantially U-shaped guide provided at the hinge sideframe part is accommodated to such shape.

Abstract: A panic exit door locking mechanism adapted particularly for mounting on a narrow stile door frame, and which includes top and bottom bolt mechanisms respectively at the upper and lower ends of the tubular frame at the swinging edge of the door, the locking instrumentalities including a rotatable lever arrangement concealed within the tubular stile, and being connected to the bolt mechanisms by concealed rod structures that are length adjustable for doors of different heights. Actuators for the rotatable lever arrangement comprise a manually operable panic exit actuator device mounted on the inner side of the door and/or a conventional key-controlled rotatable cam lever having a lost motion relation with the rotatable lever arrangement.

Abstract: A combination lock is disclosed that has a plurality of separately dialed tumblers mounted for rotation around spaced parallel axes. The tumblers extend through openings in a plate and each carries a fence that cannot pass through the opening. Each opening has a lateral gate slot to receive the fence of the tumbler in the opening. The plate must move over the fences to open the lock which it cannot do until the tumblers are positioned so the fences are positioned in alignment with the gate slots. Provision is made for changing the combination when desired and for opening the lock with a master combination when the current combination is forgotten. Also, in one embodiment, the lock can be opened with a spare combination in addition to the master when the current combination is forgotten or lost.

Abstract: A rotatable cam disc has connected thereto linkage means for operating latch bolts. The cam disc has an arcuate cutout in the edge portion thereof defining a pair of end shoulders. A lock actuator plate is rotatable coaxially of the cam disc, and has secured thereto a post member movable within the cam disc cutout. Upon rotation of the lock plate actuator, the post member is engageable with an end shoulder of the cam disc for effecting rotation of the latter and actuation of the linkage means.