Abstract: A locking mechanism having a serrated rod that fits into an aperture of a rotatably mounted block when biasing which pushes the block toward the direction of insertion is reduced. Pulling the serrated rod, after insertion, in the direction from which insertion occurred tends to increase biasing and, consequently, decrease diameter of the aperture projected perpendicular to the length of the serrated rod thereby retaining the serrated rod within the aperture. An end of the serrated rod that does not have the serrations can be formed into a loop for attaching a belt or have screw thread for connection to a bar. The belt or bar would restrain a person or physical object.

Abstract: The present invention provides a latch system and method which is rotatably engaged/disengaged. Accordingly, the preferred embodiment provides a latch actuator, disposed in a latch cup of a surface to be provided restricted movement, and a latch bolt coupled to the latch actuator such that rotational manipulation of the latch actuator results in rotational manipulation of the latch bolt. Preferred embodiments of the present invention include a locking mechanism allowing controlled restriction of the rotational movement of the latch mechanism.

Abstract: A slide latch is disclosed that slides between an open position and a closed position to releasably secure a panel in the closed position. The slide latch is moved toward the nearest edge of the panel in order to move the latch to the open position.

Abstract: A latch having a housing, handle, pawl, actuator and spring. The spring biases the pawl toward the latched or extended position. The handle is pivotally attached to the housing and has a pair of actuating arms that are engageable with the actuator. The actuator is slidably supported by the housing. Lifting the handle to the open position causes sliding movement of the actuator which in turn causes the pawl to slide to the unlatched or retracted position.

Abstract: A door latch has an adjustable cam (25) to accommodate two backsets of the bore (24) through a door. The cam (25) is operably attached to a handle 14. Rotation of the handle (24) approximately 45° fully retracts latch bolt (54) and deadbolt (56) through a slide actuator (100) that pulls a link (112) which pivots a cam lever (104) that retracts the bolt (54). The bolt (54) retracting motion is magnified with respect to the motion of actuator (100) via the link (112) and cam lever (104). The link (112) and cam lever (104) are mounted within cylinder section half (52) of housing (28) so as not to interfere with the deadbolt (56) and its slide (150) and deadbolt locking plate (170) that are mounted in a complementary cylinder half (51).

Abstract: A muzzle door latch, or attachment mechanism, incorporates spring-loaded plungers acting within concave surfaces to provide additional resistance to vibration. The door, or cap, has an elastomeric seal about its outer circumference, which fits snugly within the muzzle. Diametrically opposed guides are attached to the outer side of the cap and extend radially past the outer edge of the muzzle. A plate is attached to the exterior of the muzzle, corresponding to each guide, and each plate extends slightly beyond the end of the muzzle. A roller on each guide engages the outer surface of the plate when the cap is positioned within the muzzle. The plates have a concave indentation on their inner surface, and a spring-loaded plunger on each guide is biased against the concave surface.

Abstract: A tilt-latch (10) adapted for releasably securing a pivotable sash window (12) disposed within opposed guide rails (16) on a master frame (14) of a window sash assembly (11) is disclosed. The sash window (12) comprises a top sash rail (20), a base (22) and two stiles (24,26) connected together at their extremities. The tilt-latch (10) comprises a housing (42) adapted to be supported by the top rail (20). The housing (42) has an outward end opening (44) and a tongue (76) extending along a bottom wall (45) of the housing (42). The housing (42) also has a cover (51) having an elongated opening (70) defining a pair of rails (72,74). The housing (42) further has an outer edge (110). A latch bolt (46) is disposed within the housing (42) and has a nose (47) adapted for engaging a respective one of the guide rails (16). The latch bolt (46) has a first bolt channel (82) in cooperative sliding engagement with the first tongue (76).

Abstract: A push button assembly (30) includes a spring member (32) and a button (34). The spring member is secured to a computer bezel (10), and includes a rod (36), a pair of U-shaped crooks (38, 40), and a deformable arm (42) extending from one of the U-shaped crooks. The deformable arm includes a free end portion (48). The button is movably received in an aperture (16) of the bezel. The button defines a through hole (58) for movably receiving the free end portion of the spring member. Thus the button can move freely in the aperture of the bezel.

Abstract: A combination locker lock is provided having a three digit combination that can be set by a key to one of six different combinations. The locker lock includes a bolt that can retract into the case of the lock, fully extended from the case to function as a dead bolt, and partially extended from the case to function as a spring loaded automatic bolt. A plunger associated with the bolt is used to release the bolt from the partially to the fully extended position, and a single trigger associated with the bolt is used to hold the bolt in the partially extended position and the fully extended position.

Abstract: A tilt-latch (10) adapted for releasably securing a pivotable sash window (12) disposed within opposed guide rails (16) on a master frame (14) of a window sash assembly (11) is disclosed. The sash window (12) comprises a top sash rail (20), a base (22) and two stiles (24,26) connected together at their extremities. The tilt-latch (10) comprises a housing (42) adapted to be supported by the top rail (20). The housing (42) has an outward end opening (44) and a tongue (76) extending along a bottom wall (45) of the housing (42). The housing (42) also has a cover (51) having an elongated opening (70) defining a pair of rails (72,74). The housing (42) further has an outer edge (110). A latch bolt (46) is disposed within the housing (42) and has a nose (47) adapted for engaging a respective one of the guide rails (16). The latch bolt (46) has a first bolt channel (82) in cooperative sliding engagement with the first tongue (76).

Abstract: An automatic door latch is disclosed. In a preferred embodiment, the latch includes a dead bolt which is automatically moved from a partially retracted or trigger position to a fully extended locking position when a door in which the lock is mounted is closed. When a key is used to unlock the dead bolt from outside of the door, or a finger turn or key is used to unlock the dead bolt from inside of the door, the dead bolt is automatically reset to the trigger position. In a preferred embodiment, the dead bolt lock includes a multi-position switch mounted in the lock housing which engages a contact member mounted on the dead bolt. Retraction of the dead bolt into the housing causes the multi-position switch to engage the contact member and to secure the dead bolt in the trigger position. Subsequent retraction of the dead bolt into the housing causes the multi-position switch to disengage from the contact member, thereby allowing the dead bolt to extend from the housing to the locked position.

Abstract: A latch for use in connecting thin panels together has a base with first and second portions connected by a spring loaded hinge, a lock pin and release pin mounted to the base reciprocate relative to the first and second portions of the base. The first and second portions of the base are moveable relative to one another with the second portion of the base having an edge to engage an enlarged head of the distal end of the lock pin and holding the lock pin in a retracted position. A spring biased release pin contacts the second portion of the base and disengages the enlarged head of the lock pin from the second portion of the base, and a biasing spring returns the lock pin into a locked position where it secures a second panel member to a first panel on which the latch is attached. The lock pin and the release pin are operated by a simple hand tool that cooperates with complementary receptacles on the pins to move the pins along their longitudinal axes in response to an axial force applied by the tool.

Abstract: An apparatus and method are presented for opening an access door having a latch opposite a hinge. The latch locks the access door in a closed position, and may include a pair of parallel locking pins and a connecting member joining the locking pins. The locking pins extend outwardly from the access door and into a pair of holes in an adjacent portion of a frame surrounding the access door. The latch may also include one or more resilient members (e.g., springs) urging the locking pins into the pair of holes. The connecting member and an adjacent fixed portion of the access door are separated by a distance d, and the locking pins extend a distance l into the pair of holes. The present method includes providing a prying member having a first lateral dimension s where s.gtoreq.(d+l) and a second lateral dimension w where w.ltoreq.d. Dimension w of the prying member is inserted between the connecting member and the adjacent fixed portion of the access door.

Abstract: A docking station that has vertical restraints that are pressed down by the bottom surface of the portable computer. This causes the vertical restraints to engage receptacles that are formed in the bottom side of the portable computer. To disengage the portable computer from the docking station the computer must be moved laterally to release the vertical restraints from the portable computer. This prevents the portable computer and the docking station from being damaged by a user when the portable computer is lifted off of the docking station in an improper manner.

Abstract: A vehicle glove box door latch assembly includes a housing with a central opening formed therein and a latch handle positioned substantially within the central opening. The latch handle is operative to actuate unlatching of the latch assembly. A utility hook is positioned substantially within the central opening and pivotally connected to the housing for pivotal movement between a stowed position within the central opening and a use position extended from the central opening. The utility hook is pivotable independently of the latch handle.

Abstract: A safety device, of the anti-false maneuver type, capable of impeding the actuation of a locking fitting upon opening of a leaf of a door, window or the like, this safety device including, on the one hand, a support in the shape of a casing capable of being inserted against a face-plate and, on the other hand, a locking finger passing through this latter, under the action of springy restoration means, with a view to locking an actuating rod in translation, this when the door or window is open. In particular, the casing defined by the support and serving as a housing for the locking finger includes, at the level of each of its opposite sides parallel to the plane of the leaf on which it is fitted, an opening serving for the passing through of the connecting lug which is capable of being fitted onto the locking finger with a view to actuating same under the action of an actuating lug extending.

Abstract: An automatic door latch has a case and a bolt movable within the case between a fully extended position in which the bolt extends forwardly of the case and a partially extended position in which the bolt is positioned to contact a door strike. There is a plunger mounted on the bolt, with the bolt and plunger being relatively movable. A spring biases the bolt toward a fully extended position and a spring biases the plunger outwardly of the case. The plunger has a projection which limits outward movement of the plunger to a position in which its extension is the same as that of the bolt when it is in its partially extended position. There is a stop on the bolt movable toward and away from the case and there are projections on the case which coact with the bolt stop to limit bolt extension to its partially extended position.

Abstract: A portable apparatus comprises a housing having an opening portion, a pack receptacle formed in the housing, and a battery pack detachably contained in the pack receptacle through the opening portion. The pack receptacle has a slider for maintaining the battery pack at the pack receptacle. The slider is movable between a lock position and a lock releasing position, and maintained at the lock position through a spring. The slider has an insertion port, an engaging portion, a first cam portion, and a second cam portion. The insertion port is formed such that a convex portion of the battery pack is detachably inserted therethrough to be continuous to the opening portion. The engaging portion is formed to be engaged with the convex portion when the slider is moved to the lock position.

Abstract: A lock structure for locking a battery cover 3, the lock fitted to a battery storage portion 2 in a housing body 1 of an electronic applicance. The lock structure includes a manipulation member 9, which is elastically deformed in a depth direction thereof by a slot formed in a portion of the housing body 1. The manipulation member 9 supports a lock member 6 with a spring, a top portion of the lock member 6 protruding into the battery storage portion. The battery cover 3 includes a rib with a notch portion 5 having a slanted edge. The battery cover 3 is locked with an engagement of the lock member with the notch portion. Further, when the manipulation member 9 is elastically deformed by being pushed, the lock member 6 moves integrally with the member 9, and the lock member is released from the engagement with the notch portion 5 so that the cover 3 is released from the locked state.

Abstract: A first platform having fingers rising therefrom is interengaged with a second, fusible platform in a spring latch assembly. The second holds the first at an angle in which the fingers avoid notches formed in the tail of the latch bolt. When the fusible platform melts due to excessive heat, the fingered platform assumes a normal horizontal disposition, and the fingers engage the notches in the tail to prevent the latch bolt from retracting.

Abstract: A door locking mechanism for use with a door having a door latch assembly and a stationary catch includes a locking rod movable between a locking position and a release position. In its locking position, the locking rod extends into aligned passages formed in a latch member and a stationary catch member of a door latch assembly, which are engaged with each other in a latched position to maintain the door in a closed position. This prevents disengagement of the latch member from the catch member, to prevent opening of the door. In its release position, the locking rod is withdrawn from at least the latch member passage, to enable the latch member to be disengaged from the catch member and to allow opening of the door. The locking rod is interconnected with a piston disposed within a cylinder. A spring urges the piston toward a position placing the locking rod in its locking position.

Abstract: Plunger arrangements are used for retaining glass/screen inserts in frames. A plurality of caps are disposed around the insert and are disposed in one position for extending a spring biased plunger to engage the frame. The caps are disposed in an other position against the spring bias to retract the plunger from the frame. The arrangement is such that the cap remains in the other position without being held thereat by a user, whereby the user's hands are free to manipulate the insert in or out of the frame.

Abstract: A manually actuated pin-type door locking assembly is shown. The pin-type locking assembly includes a housing having a locking pin confined within a locking cavity and movable between an unlocked position and a locked position. A rotary shaft actuator is rotatably mounted to the housing and is connected to the locking pin via a swing arm. The swing arm is spring biased. By rotating the rotary actuator shaft back and forth, the locking pin is moved between the unlocked position and a locked position where the locking pin effectively locks the door of a vehicle to an adjacent frame structure.

Abstract: A video cassette recorder is provided with a door opening device for selectively exposing or concealing operating buttons for inputting recording reservation data mounted on a front panel thereof.

Abstract: A door locating device includes an anchorage hole provided on the concrete or ground. An outer sleeve is anchored into the anchorage hole. This outer sleeve has hollow configuration is provided with outer thread. The bottom of the sleeve is provided with a bottom plate which has a flange. The flange is provided with a plurality of threaded hole. A fixing plate having a threaded hole at the center portion thereof. Both side portions of the plate are provided with through holes. The threaded hole is screwed into the outer thread of the outer sleeve. The immediate sleeve to be incorporated with the outer sleeve. The immediate sleeve is provided with longitudinal slot at its inner wall. The longitudinal slot has an enlarged cut which forms upper and lower positioning edges. A spring is disposed within the bottom of the sleeve. A top press block has a traverse slot. The upper and lower portion of the block has a first and a second posts which have different diameter one another.

Abstract: A door latch is disclosed herein having a base member with a forward angular and notched face and which includes a sleeve resiliently supporting a reciprocating plunger operable to releasably engage and disengage with a retaining opening provided in a latch member. A spring carried, on the latch member effects forcible separation of the latch member from the base member upon disengagement of the plunger from the latch member opening. Apertures in the base member allow mounting of the base member for either right or left hinge mounted cabinet doors.

Abstract: A latch mechanism which engages with a main body is provided at pivoting edges of a keyboard and a cover which are provided at the main body so as to be openable and closable. The latch mechanism includes a latch member which is movable from a first position, at which the cover and the keyboard are engaged with the main body, to a second position, at which the engaged state of the cover and the keyboard with the main body is released. The latch member releases only the engaged state of the main body and the cover at a third position which is between the first position and the second position. Further, the latch member is usually urged to the first position by a compression coil spring which deforms upwardly in a convex shape at the second position of the latch member.

Abstract: The cart includes a cart body tiltable relative to a base mounted on casters. A locking device for maintaining the cart body in selected tilted position relative to the base includes an actuator having a cam surface and a pin biased into a locking position by a spring having a cam follower surface. By displacing the actuator, the cam displaces the pin from an opening in a locking plate carried by the cart body to enable tilting movement of the cart body relative to the base. By displacing the actuator in the opposite direction, the bias of the spring moves the pin into an opening in the locking plate, locking the cart body in a selected angular position relative to the base.

Abstract: An economical, efficient window stop includes a narrow, flat housing having first and second cavities for respective flat, narrow bolt and latch. The bolt is spring braced and movable between a first portion within the cavity and a second position extending from the cavity. The latch is spring biased and moves transverse to the movement of the bolt. High strength molded plastic construction with guide means and close tolerances allow efficient distribution of forces from the extended bolt to the housing.

Abstract: A utility trailer affording level load support to the ground has a frame and a shiftable platform supported on shafts which are journaled on the frame and on the platform in offset relation so that tilting of the platform during shifting is torsionally opposed. The frame and platform are fastened together by a snap bolt arrangement in response to movement of the platform relative to the frame.

Abstract: A latch apparatus includes a spring pack assembly for returning a latch to its normal non-use position. The spring pack assembly includes a holder portion and a cap for retaining a torsion spring. The holder portion includes retaining members and an annular member extending upward from the base of the holder for retaining and positioning the torsion spring. The adapter portion extends opposite the retaining members and annular member to receive a spindle for actuating the handle. The spring pack assembly inserts under a latch plate on the surface of the door and can be positioned so that the handle can be actuated in either direction and return to its non-use position and so that the handle can be oriented either to the left or right and either pointing upward or downward when not being used.

Abstract: A lockable latch mechanism for receiving the hasp of a padlock and locking a hinged door to a door jamb to prevent opening of the door when the door is closed and the latch is in engagement with the jamb. The latch includes a sliding latch mounted on the door including a latch plate and a latch bolt. A latch bolt defines a cam surface engagable with the jamb to cam the latch bolt away from the jamb as the door is closed. Biasing springs are utilized to bias the latch bolt outwardly with respect to the latch plate and to bias the latch plate and latch bolt together outwardly with respect to the door jamb. A detent prevents movement between the latch plate and the latch bolt when the latch is mounted on a door and latched behind a door jamb.

Abstract: A latch (10) for latching or locking a battery housing (80) to an electronic device (70) which automatically locks in place upon the removal of pressure to a biased cantilevered beam (52) (54). Latch (10) is removal from a first position, in which the battery housing (80) is latched to the electronic device to a second position in which the battery housing (80) is unlocked from the electronic device.

Abstract: A sliding, door latch has a latch member and a spring member integrally molded in one-piece. The latch member, which can be secured in a latch opening in a thin door panel without the use of tools, includes a planar base member which covers and slides reciprocally in the opening. An integral actuator extends traversely from the back of the base member through the opening and has integral bosses on its sides which form grooves engaging tangs in the sides of the latch opening. An integrally molded latch finger projects from the actuator toward the door panel edge. The spring member includes a first pair of spaced apart elongated elements integrally hinged to the actuator, a second pair of elongated elements integrally hinged at one end to the first pair, a beam integrally hinged to and connecting the other ends of the second pair of elongated elements, and a hook integrally molded to the center of the beam and engaging the rear edge of latch opening.

Abstract: A deck structure for use in supporting cargo at an intermediate level above the floor or bed of a trailer van, or the like. A first embodiment includes a first deck section pivotally mounted on a side wall of a trailer van and movable to a horizontal load position, and back up to a vertical stored position against the side wall where it is releasably held by a spring slam bolt engaged with a height saving angle locking rail. In the first embodiment a second section of the deck is pivotally connected to the first section and it is also movable between a horizontal load position and a vertical stored position against the side wall, and when it is in the vertical stored position it is hanging from the first section and is configured such that it nests closely in the first deck section to provide a slender storing intermediate deck structure.

Abstract: A latch assembly for actuating a bolt assembly for a door is provided. The latch assembly includes a housing and a cavity extending partially therein. The housing includes a guide track for receipt of track engaging members extending from a slider. The slider is movable between a first position whereby the bolt assembly is actuated and a second position whereby the bolt assembly is not actuated.

Abstract: The invention relates to a latch mechanism for coupling a horizontal platform at a selected vertical position on a supporting structure, wherein the mechanism includes a frame member having a plurality of walls arranged to define an enclosed area and a multi-sided bracket for engaging the supporting structure to couple the frame member to the supporting structure. A locking bar extends through the frame member and bracket to engage with the supporting member and is movable between a locking position and an unlocking position. A blocking plate is coupled to the frame member and positioned outside of the enclosed area and is movable by gravity between a blocking position to prevent movement of the locking bar to the unlocking position and a releasing position to allow movement of the locking bar to the unlocking position.

Abstract: A safety device includes a substantially L-shaped mount securely mounted to an inner wall of a side panel of a drawer and a sliding assembly. The mount includes a vertical portion on which a first track is provided and a horizontal portion in which a hole is formed. The sliding assembly includes a body having at least one compartment for optionally receiving a stop and a second track extending longitudinally from the body. A member projects from the body and is slidably received in the first track. A pin extends downward from the body and has a snapping head at a distal end thereof to prevent excessive upward movement of the pin. A spring is wound around the pin. The sliding assembly further has a slider slidably received in the second track. By such an arrangement, the drawer is limited, by the upper edge of the desk, between the stop and the slider.

Abstract: A keyboard storage and retrieval system for a computer is provided, the system comprising a flat panel display, an enclosure, a removable keyboard slidably attached to the enclosure, and a latching system for lockingly securing the removable keyboard to the enclosure. The latching system includes a manually operated damping device for ejecting the removable keyboard from the enclosure and a manually operated mechanical latching device for securing the removable keyboard to the enclosure. The flat panel display is movable to a closed position on the enclosure to actuate the latching device to prevent the damping device from ejecting the removable keyboard from the enclosure.

Abstract: A hatch for a boat or other application is provided. The hatch includes a frame for mounting in an opening in a panel and a hatch cover pivotally mounted thereto. The cover includes a hinge pin that pivotally engages a hinge receptable mounted on the frame. A handle is slidably mounted in the hatch cover and includes a latch that releasably engages the frame when the hatch is in a closed and latched position.

Abstract: An anti-pilferage device is attached to the car body of a railroad flatcar of the type for carrying containers. The device has a mounting plate attached to the car frame at a point adjacent the doors of a container loaded on the car. A barrier is tiltably supported on the mounting plate in a manner which permits free movement if the barrier is bumped during loading of a container. The barrier is movable between a raised, operative position and a lowered, retracted position. A spring biases the barrier to the operative position, wherein it is in the path of a swinging container door to prevent it from being opened. In the retracted position the barrier is below the level of the container floor. A plurality of anti-pilferage devices may be mounted on the car to accommodate containers of various lengths. The barriers are automatically movable between the retracted position and operative position without the need for manual actuation.

Abstract: A latch assembly includes a latch that can reciprocatingly move between an extended, latching position and a retracted, unlatching position. A latch-guiding lever having a recessed slot extends into a transverse hole in the latch. A plug member under the elastic force of a spring is urged into the recessed slot, thereby preventing any loosening or slipping-off of the latch-guiding lever from the latch. A pull element may be provided to separate the plug member from the latch-guiding lever to thereby enable disassembly of the latch assembly.

Abstract: An improved latch bolt deadlocking mechanism includes a housing, a latch bolt, a deadlocking tumbler, and an auxiliary bolt. The latch bolt is movable along its longitudinal axis in the housing between projected and retracted positions. The deadlocking tumbler and the auxiliary bolt cooperate to selectively deadlock the latch bolt to retain the latch bolt in its projected position. The latch bolt is formed to include integral guides extending along the length of the latch bolt for guiding the auxiliary bolt along a straight path between a projected position holding the deadlocking tumbler in a release position to permit retraction of the latch bolt and a retracted position to permit movement of the deadlocking tumbler to its latch bolt-deadlocking position.

Abstract: There is described a fire-break door comprising a swivelling leaf provided with at least one lock with draw-bolt which can be controlled by an operating member, said leaf cooperating with a door-closer allowing to swing said leaf back automatically to the closed position thereof, in which means are provided on the one hand to retain the lock bolt in a recessed or withdrawn position when the door leaf lies in closed position, and on the other hand to let the bolt be released and enter the keeper of the lock with an abnormal rise in the temperature adjacent the door.

Abstract: A collapsible storage box for floppy disk includes a casing, a switch means and a collapsible storing means consisting of a plurality of storage bags for storing floppy disk for computor use whereby the collapsible bags can be extended to form a sector type for easy and convenient take-out or take-in service for the floppy disks.

Abstract: A cassette-carrying case having a base and cover joined by a piano hinge which allows the base and cover to be opened a full 180.degree.. Easily operable latches are incorporated into the cover, which automatically lock the case closed when the cover is moved to the closed position. A handle is incorporated into the main body of the base and cover.

Abstract: To lock the head of a latchbolt in extended, or locked position therein to prevent opening of a door in case of fire the latch bolt head is provided with a spring driven locking pin reciprocatably mounted in a transverse direction. In the extended locked position of the latch bolt head the locking pin is in alignment with but withdrawn clear of a hole in the latch bolt case. At the inside end of the locking pin is a groove and a fusible pin normally engages the groove holding the locking pin in withdrawn position. This permits normal latch bolt action. When the fusible pin melts because of heat from a fire the locking pin is released and driven by spring action into the hole in the latch bolt case to physically bar withdrawal of the latch bolt, and consequent opening of the door.

Abstract: A catch comprising a plunger member and a guide member, the plunger member being able to reciprocate in the guide member, with a nose of the plunger member extending out of the guide member, each of the members being a single moulding of a plastics material, one or both members including one or more tongues which extend primarily in the direction of relative reciprocation of the members and are resiliently flexible transversely to that direction, each tongue engaging a cam or a tongue on the other member in such a manner that forces act on the tongues having components parallel to the direction of relative reciprocation of the members, in the sense which urges the members towards a limit of relative reciprocation at which the extension of the nose out of the guide member is greatest, and if the nose is displaced into the guide member and released, then the plunger member returns to the said limit.

Abstract: A lockset has a die cast, monolithic body pivotally supporting a lever handle which upon actuation and through fingers engages tabs of a lock bolt assembly for selective linear retraction of the latter. A rotatable knob carried by the body through a spindle and a guide plate mounts a cam plate which acts, upon rotation of the knob in either direction, to retract the bolt assembly. The bolt has opposed U-shaped guides which receive the guide plate and guide the bolt laterally and vertically. A lock has a lock lever which positively engages the bolt assembly to lock the latter in place. A follower lever and the lock lever are pivoted about a common axis. The follower responds to a barrel lock between two positions to lock and unlock the lock lever from the bolt assembly. The lock lever also responds to a latch pin independently of the follower on the opposite side of the lockset from the barrel lock, to lock and unlock the bolt assembly.

Abstract: A curved saddle for supporting and tensioning a flexible printing plate which has a series of closely spaced apertures along opposite edge portions. Each end of the saddle is provided with a circumferentially moveable spring biased bar having a series of spaced lugs over which opposite ends of the appertured plate may be positioned and secured. To facilitate positioning of the plate over the bar lugs, each bar has a locking mechanism which secures the bar in a retracted position upon manually moving the bar to that position. After a plate is secured to the bar, the locking mechanism may be readily released by depressing an actuating plunger, thereby permitting the bar to be urged under the spring biasing force to an outwardly extended plate tensioning position.