Abstract: Door-swing restraint apparatus for a pair of latched doors closing an end opening of a cargo box comprises a chain or cable link connected between margins of the doors so that a person actuating a bar to release door latches will not be injured by freight items which bear against the door. One end of the link is fixed in the marginal edge of one door, the other end being fixed to a lever arm which can be selectably engaged with or disengaged from a lateral bracket on the latch bar of the other door, only when the arm is rotated out of its horizontal transport position into the vertical. Rotation of the bar due to torque exerted by a freight item pressing against the door is limited by a stop pin carried by the bar engaged in a slot in a door-mounted journal. The opening swing of the door is limited to a few centimeters as the link becomes taut and the lever arm remains horizontal, visually signalling the hazard.

Abstract: An exit device including a latch bolt and an action lever. The action lever includes a cam lever pivotably connected thereto and having a first portion engaging a locking member and a second portion engaging the latch bolt the cause the retraction thereof as the action lever is pivoted into its open position when a locking member is in an unlocked position. When the locking member is in the locked position, the first portion of the cam lever is free of engagement of the locking member and a second portion is free to cam about the latch bolt upon pivoting of the action lever into its open position whereby the latch bolt is not retracted.

Abstract: A latch member or rotor is rotatably mounted in a main body or frame, attached to a vehicle door, for engaging a striker affixed to the vehicle body. Also mounted in the main body, in coplanar relation to the latch member, is a ratchet engageable with the latter to inhibit its motion in a direction to disengage the striker. The main body has an upstanding bracket on which three levers are mounted for pivotal motion about a common axis, in planes perpendicular to the plane of the latch member and the ratchet. The three levers are: (1) an actuating lever acting directly on the ratchet to cause the same to disengage the latch member and hence to unlatch the door; (2) an outside release lever linked to an outside door handle; and (3) an inside release lever linked to an inside door handle. These levers are interrelated in such a manner that the latch member releases the striker upon actuation of either the outside or the inside door handle.

Abstract: A child proof door locking device for use with an automotive door is disclosed, which comprises a base plate securely attached to the door, an inside lever pivotally connected to the base plate and pivotally movable in response to handling of the inside handle, an outside lever pivotally connected to the base plate and pivotally movable in response to handling of the outside handle, a first device for causing the latching device to assume its inoperative condition when the outside lever is pivoted in a given direction, a second device for linking the outside lever with the inside lever so that pivoting of the inside lever in a given direction induces the pivoting of the outside lever in the given direction, and a child proof lever pivotally connected to the base plate and disengaging the second device from the inside lever when assuming its child proof position.

Abstract: A door lock unlockable from the indoor side comprises a handle device and a lock device. The handle device includes an indoor handle and an outdoor handle for operating a latch means for a door panel to a stationary frame. The lock device is operated from the outdoor side so as to be brought into and out of engagement with said indoor handle thereby to lock said indoor handle and said outdoor handle against rotation. The indoor handle is pivotally supported so as to be able to be swung towards and away from said door panel and adapted to be disengaged from said lock device by a predetermined swinging toward or away from said door panel, the engaging structure between said indoor handle and said lock device being exposed on the inner surface of said door panel. The door lock permits an easy recognition and understanding of the way to manipulate the indoor unlocking mechanism, as well as a simple and easy manipulation, thereby to ensure a prompt escape from the chamber.

Abstract: A lever-type handle for operating a racking mechanism and providing an interlock for a cabinet enclosing electrical equipment. The handle is comprised of two sections which are linked together by a throughbolt. A cover assembly retaining and enclosing a portion of the handle is provided with an opening oriented so that the bolt is only accessible when the handle is in an "on," or energized, position. By removing the through bolt the handle sections are disengaged so that one portion can be moved to a non-locking position and access gained to the cabinet interior.

Abstract: A lock for boat shutters and the like comprising a shaft, extending through a shutter, with a means thereon providing a square seat at one end, for operation by winch handle, and a hex head at the other end; a handle having a cam engageable with a shutter frame and an opening which receives the shaft therethrough; and a spring-biased knob inserted into the handle and having a hex cavity to receive the hex head of the shaft; the handle having recesses which receive, in one position of the knob, mating projections on the knob to operatively connect the shaft with the cam, and wherein, in a second position of the knob, the recesses and projections are disengaged so that the shaft is disconnected from the cam.

Abstract: The device comprises a latching assembly enclosed within, and translatable relative to, a centercase housing; the housing is mounted on a chassis. The device is adapted for cooperative engagement with a locking cylinder, for actuating the latching assembly, and for operation of a thumbpiece lift, by an ancillary, external, trim linkage, for translating the latching assembly. The latching device has a master, locking cylinder cam or dowel, the latter having a removable screw, which (through a locking cylinder) either operates a night-latch cam plate, to translate the latching assembly or, upon removal of the screw, allows the cam or dowel to translate a tumbler which, in turn, frees a thumbpiece lift, for operation (then) of the latching assembly by the lift, instead of by the cam plate. Accordingly, with the drive screw in place, the external, operating trim linkage can not operate the device; it must be unlatched, externally, by a key in the locking cylinder.

Abstract: Locking mechanism having a casing including a pair of spaced support plates of similar size and shape. The support plates have identical, spaced, congruent, T-shaped tongues along their front edges. When installed in a door, the tongues extend beyond the edge to engage a strike in the door frame. A pair of bolt members are pivoted in the space between the support plates and are movable between an extended, closed position engaging the strike to a retracted, open position not engaging the strike. A slide rod engages the bolt members and is rotatably and reciprocally journaled between the plates. The slide rod has a transverse arm portion adapted to be connected to one or more manual locking elements in the vehicle door to turn the rod between locked and unlocked mode positions. A slide actuator lever is pivoted to the casing and is engageable with the slide rod arm portion to turn it between locked and unlocked mode positions.

Abstract: A lock plate is disclosed. It consists of a locking lever 4 with two stable positions on which an intermediary opening lever 14 is mounted so as to pivot. The latter lever avoids being moved through disengagement by means of an outside control lever 17 when the locking lever 4 is in its locked position. In the unlocked position, the hinge axes 16, 13 of the outside control lever and the intermediary lever are superimposed.

Abstract: The invention relates to a lock mechanism for doors, preferably for use with dwellings, apartments or offices, the locking mechanism providing in particular a measure of safety against unauthorized opening of the lock. The lock mechanism is of a type which at will may be alternatively actuated from the inside either by a key or a thumb turn. When the resident of the house leaves he may in a simple manner suspend the function of the thumb turn. The lock is on its inside equipped both with a key hole hand and a thumb turn. The thumb turn may be engaged or disengaged with a dead bolt by means of a screw means. The screw means is actuated from the front of the lock, actuating an arm which actuates a transmission element bringing the transmission means of the thumb turn into, respectively out of engagement with the transmission means on the follower so that the lock at the operators will either will be actuated by a key or a thumb turn.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which extends longitudinally along one side of the bolt and which has an end region that is shifted from side to side between connecting and disconnecting positions by a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: One part of a key-in-knob lock set functions in a normal manner such that when the lock set is unlocked, either the outside or inside knob can be manipulated to open the door by withdrawing the latch bolt from a normal spring latch extended position. When, instead, the lock set is locked, the latch bolt is extended an exceptionally long distance into the frame to a dead bolt position. Extension and retraction of the latch bolt to and from dead bolt position is accomplished by manipulation of a main cam through the agency of a key in the outside or a turn button on the inside.For withdrawing the latch bolt from the normal spring latch extended position, an escutcheon housing for the outside knob or a corresponding escutcheon housing for the inside knob serves, by moving transversely of the axis of rotation of the knob, to rotate a radially extending tooth-like element on the spindle which, acting through the main cam, withdraws the latch bolt.

Abstract: A deadbolt lock mechanism of the single cylinder type is disclosed having a latch bolt which is movable between extended and retracted positions by a cylinder lock at one side thereof or by rotation of a thumbturn at the other side. With the latch bolt in the retracted position, the thumbturn is axially movable between operative and inoperative positions. In the operative axial position of the thumbturn, the thumbturn is operatively coupled to the latch bolt for operation thereof. In the inoperative axial position of the thumbturn, the thumbturn not only is operatively uncoupled from the latch bolt but also is prevented from rotation.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a mounting member which extends longitudinally along one side of the bolt and which is drivingly engaged by the handle. A disconnect member is supported on the mounting member and is arranged to be pivoted from side to side between connecting and disconnecting positions by the movement of a key-operated locking member.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A bolt is carried on the back of the body and is movable between latching and unlatching positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which is moved by a key-operated locking member between connecting and disconnecting positions located, respectively, in and out of the path of travel of a handle operating arm. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding unlatching movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The linkage includes a disconnect member which is movably mounted on the bolt. The disconnect member is moved by a key-operated cam between connecting and disconnecting positions. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt. When the disconnect linkage disconnects the handle from the bolt, movement of the handle is inoperative to cause retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which is mounted for translatory movement along one side of the bolt to bring other disconnect components selectively into and out of driving engagement. A key-operated locking member moves the disconnect member between connecting and disconnecting positions. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a rotatably-mounted disconnect member which extends longitudinally relative to the bolt. Interengageable formations are provided on the bolt and the disconnect member. The interengageable formations are brought into and out of driving engagement by the movement of a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes an operating member which is pivotally mounted on the body at a location behind the handle, a key-control which is carried on the handle, and a disconnect member which is carried by the key control for movement into and out of driving engagement with the operating member. The operating member has an arm which extends through an opening formed in the back of the body and into driving engagement with the bolt. A two-piece guard shields the members of the disconnect linkage from access by would-be intruders.

Abstract: A deadbolt lock mechanism of the single cylinder type is disclosed having a latch bolt which is movable between extended and retracted positions by means of a lock cylinder at one side thereof. A thumbturn, together with manually movable coupling control means for controlling the coupling between the thumbturn and latch bolt are located at the other side of the mechanism. In the bolt retracted position, the coupling control means is movable between coupling enabling and disabling positions to condition the coupling for operation of the latch bolt by the thumbturn in the enabling position thereof, and for disabling such latch bolt operation by the thumbturn in the disabling position. Consequently, the latch bolt is operable by the lock cylinder in any position of the thumbturn and coupling control means, whereas the thumbturn is enabled for operation of the latch bolt only when the coupling control means has been moved into enabling position.

Abstract: One part of a key-in-knob lock set functions in a normal manner such that when the lock set is unlocked, either the outside or inside knob can be manipulated to open the door by withdrawing the latch bolt from a normal spring latch extended position. When, instead, the lock set is locked, the latch bolt is extended an exceptionally long distance into the frame to a dead bolt position. Extension and retraction of the latch bolt to and from dead bolt position is accomplished by manipulation of a main cam through the agency of a key in the outside knob or a turn button on the inside knob.For withdrawing the latch bolt from the normal spring latch extended position an escutcheon housing for the outside knob or a corresponding escutcheon housing for the inside knob serves, by moving transversely of the axis of rotation of the knob, to rotate a radially extending finger on the spindle which, acting through the main cam, withdraws the latch bolt.

Abstract: A paddle handle lock bolt includes a bellcrank retractor or trigger member which constitutes the central element of a three element drive train comprising a paddle handle, the bellcrank retractor, and a spring-loaded slide bolt. The bellcrank retractor can be selectively coupled to the paddle handle for selectively drivingly engaging the spring-loaded slide bolt in the retracting direction.

Abstract: A disengaging spindle locking mechanism for the latch bolt of a mortise type lock is actuated by the locking slide which is normally employed to engage a retractor hub to prevent the hub from being rotated. At the inner end of a split spindle where it is in non-rotatable engagement with the retractor hub there is a cam surface. On the inner end of a locking slide is a cam surface which cams the spindle out of engagement with the hub as hub action is blocked by the slide. Thereafter, should force be applied to the spindle, it will merely spin in place and no damage will be done to the lock mechanism such as might otherwise be done by unauthorized persons to force open the lock.

Abstract: A latch mechanism is provided which comprises a latch member and an open member to move the latch member to its open position. The latch mechanism has a frist condition in which the latch and open members are in conjoint action and a second condition in which the latch and open members are out of conjoint action.

Abstract: A keyless door locking mechanism for an automotive vehicle comprises a latch member engageable with a striker element on the vehicle body during closing of the door, a detent element engageable with the latch member for keeping the same latched when engaged by the striker, a release element having a shoulder being connectable with the detent for releasing engagement of the latch member and the detent in an unlocked position thereof, a locking lever for moving the release element to a locked position to free the connection of the detent and the release element, a keyless locking lever being moveable with the locking lever between the unlocked and locked positions thereof and being further moveable to a keyless locked position, a cancelling lever moveable with the locking lever between the unlocked and locked positions thereof and further moveable to the keyless locked position and being engageable with the detent to return the locking lever moved to its locked position during door opening to its unlocked posit