Abstract: The present invention concerns a pin tumbler lock system having a housing, a plug, and easy accessible driver pins, key pins and springs. The system is configured so that the lengths of the key pins are adjustable from the outside without taking the lock apart.

Abstract: A disc tumbler lock, which comprises a lock case, which includes a bolt displaceable with a key of the lock and a number of locking discs provided with locking channels and which are displaceable with the key of the lock against the force of a spring to open the lock and for guiding the movements of which the lock case is provided with stationary guiding members, and a locking pin dependent on the movements of the bolt and which is arranged to cooperate with the locking channels of the locking discs. At least one of the locking discs is equipped with gripping structure, which, when the bolt is pressed inwards to the lock case, are arranged to cooperate with counter structure arranged in the lock case for preventing the displacement of the at least one locking disc.

Abstract: A lever lock apparatus having a sliding bolt, a detent mechanism for locking the bolt against sliding movement and a plurality of levers. When using the appropriate key, the detent moves to allow the bolt to be slid to a locked or unlocked position. When the lock is under attack, and an inward force is applied to the bolt, the detent moves so as to maintain a detent fence away from the levers. Keeping or moving the fence away from the levers impairs the ability to pick or otherwise attack the lock.

Abstract: A safety deposit box lock assembly has a housing and latch bolt carried by the housing. The latch bolt is movable between a locked and an unlocked position relative to the housing. A guard lock is provided as part of the lock assembly and is movable by a guard key between an unsecured orientation and a secured orientation. The guard lock permits movement of the latch bolt to the unlocked position when the guard lock is in the unsecured orientation. The guard lock prohibits movement of the latch bolt to the unlocked position when the guard lock is in the secured orientation. A patron lock is provided as part of the lock assembly and is movable by a patron key between a latched orientation and an unlatched orientation. The latch bolt is in the locked position when the patron lock is in the latched orientation. The latch bolt is in the unlocked position when the patron lock is in the unlatched orientation.

Abstract: A lever lock apparatus having a sliding bolt, a detent mechanism for locking the bolt against sliding movement and a plurality of levers. When using the appropriate key, the detent moves to allow the bolt to be slid to a locked or unlocked position. When the lock is under attack, and an inward force is applied to the bolt, the detent moves so as to maintain a detent fence away from the levers. Keeping or moving the fence away from the levers impairs the ability to pick or otherwise attack the lock.

Abstract: Disclosed is a locking device including a slider arranged in a housing in such a fashion that it is slidable between a locking position thereof and a lock releasing position thereof, the slider having a bolt adapted to selectively lock an article to which the locking device is applied, a rotating member mounted in the housing in such a fashion that it is rotatable between a locking position thereof and a lock releasing position thereof while being always urged toward an initial position defined between the locking position thereof and the lock releasing position thereof, a cylinder mounted in the housing in such a fashion that it is rotatable between a locking position thereof and a lock releasing position thereof, the cylinder having an engagement rod adapted to selectively move the slider between the locking and lock releasing positions thereof, a plurality of key plates hingably mounted in the housing, the key plates respectively having guide channels which are misaligned from one another at an initial pos

Abstract: A resettable double-bit lock is disclosed, with a bolt having a resetting blade and a plurality of studded disks supported therein. The studded disks are adjacent a plurality of tumblers, the tumblers being supported pivotally around a mandrel and arranged by a double-bit key. A resetting swivel is supported on the bottom surface of the housing for the lock, with the resetting swivel being actuated by a bit of a resetting key and displacing thereby a resetting lock device. The resetting lock device includes a nose which releases a locking angle, the latter of which folding over into an opening position under a biassing force, which is preferably created by a spring. The locking angle further includes an arm so that when the bolt of the lock is pulled backwards, the resetting blade runs against the arm of the locking angle and releases the plurality of studded disks contained within the resetting blade.

Abstract: A bolt-operated, vertical-lift lever lock having a lockcase or lock base and a lock cap, provided with a lever housing attached to at least one of the lockcase or lock base and lock cap and, wherein the lever housing is so constructed that the, or each, lever may slide within the lever housing and be protected against unauthorized lateral or longitudinal forces applied to the bolt.

Abstract: A safe-deposit box uses a lock using a tongue, a first mechanical device, a second mechanical device, an electromagnetic valve, a control unit and a keypad. A renter's key drives the first mechanical device from a first position to a second position for actuating the control unit. The electromagnetic valve is in a first position for retaining the first mechanical device in the second position. A code is input through the keypad to the control unit for driving the electromagnetic valve from the first position to a second position for allowing movement of the mechanical device from the second position to a third position for retracting the tongue. A clerk's key can drive the second mechanical device from a first position to a second position for driving the electromagnetic valve from the first position to the second position and turning off the control unit.

Abstract: A condom case is provided that houses one or more condoms within an enclosure having two distinct and interdependent locking mechanisms. Two separate keys must be employed simultaneously to disengage the locking mechanisms and open the condom case. The condom case pragmatically protects the condom while symbolically promoting the concepts of mutual consent, fidelity, dignity, commitment and intimacy. The keys may be worn around the necks of each individual as an overt talisman of their exclusive relationship.

Abstract: A double hook-bolt mortise lock includes a cam form tumbler plate assembly comprised of a plurality of cam form tumbler plates driven by the steps of a key to define a space passage for passing therethrough of the key into a brake notch to further drive the cross bar of a main brake frame to move from one stop hole to the other. During movement of the main brake frame, an auxiliary brake frame is carried by means of two idle gears to make a rectilinear motion toward or against the main brake frame so as to drive the gears of two hook bolts to rotate, by means of the rack portions of the main and auxiliary brake frame, to further let the two hook bolts lock up with or lock from a striking plate.

Abstract: An adjustable lock has an adjustment slide arranged in the bottom of a key housing, the slide is situated underneath the bolt element and a number of tumbler devices with teeth engage a blade carried by that slide, the improvement of that lock includes a recess and an oblong slot in the bolt element, a first stationay pin mounted to the housing and traversing the oblong slot; a bolt drive lever has its lower end mounted on the pin and is otherwise situated in the recess for translating key motion into a larger latch motion for the bolt, the bolt drive lever having a projection; in addition to a bearing bore, a central part of the bolt driver lever is provided with a key control curve, and the projection on the drive lever engages a U-shaped indent of the bolt, so that the bolt is moved on turning of the drive lever; hence the tumblers are encoded when a key is inserted and turned oppositely following the taking out of the tumblers of said blade, and the key, possibly a new and different key, then re-encodes t

Abstract: Engaging pieces of plates pivotally mounted in a lock box are adapted to engage holes or cutouts formed in a slide member slidable between its locked and unlocked positions. When a right card formed with holes and cutouts in right positions is inserted into a card slot, the engaging pieces in engagement with the holes or cutouts are all pushed down by the card, pivot or pins and are disengaged out of the holes, while the engaging pieces out of engagement are not pushed by the card owing to the cutouts or holes in the card. Thus the slide member freed from the restraint by the engaging pieces can be slid to its unlocked position to open the lock. When a wrong card is inserted, the engaging pieces out of engagement with the slide member will be pushed by the card and engage the slide member, restraining it from moving. Thus the lock cannot be opened.

Abstract: An auto-directing lever lock includes a case housing a cylinder (4) with a plug (3) mounted for movement therein. The plug includes a keyway (14) for accepting a key bit (7). A keyway opening (15) on the surface of the plug provides access for lever tumblers (6) to engage lever steps on the key bit. The key bit is detachable from a bow and shank section (8), and inserted in to the keyway through a key hole (39) in the case. The tumblers ride on a surface of the plug and are held away from the lever steps of the key bit during rotation of the plug, until the tumblers disengage the plug surface due to the keyway opening therein. The tumblers, when disengaged from the plug surface, fall onto the lever steps of the key bit to align gatings (32) of the tumblers so a bolt stump (28) may pass therethrough to retract a bolt (5) of the lock.

Abstract: A card operated lock includes a lock box in which an inner card slit opened to the interior of a room and a outer card slit opened to the exterior of the room are disposed in substantially coplanar relationship with each other. A lock card having a predetermined pattern of punched engaging holes is inserted previously into the inner card slit while a key card comprising the same pattern of punched engaging holes as the lock card is inserted into the outer card slit when the lock is unlocked or opened. A plurality of rocking tumblers each of which is substantially in the form of a T-shaped plate are inserted into the lock box in the form of an array extended in the widthwise direction of the key card and perpendicular to the card slits. A horizontal bar portion of each T-shaped rocking tumbler is extended along both the inner and outer card slits.

Abstract: The present invention relates to a lock with a double locking mechanism comprising a first locking mechanism having tumblers movable by a first key to authorize the operation, by means of a second key, of a second locking mechanism comprising a bolt associated with a releasable fingered bolt-retaining member through the medium of a link bar pivotally mounted on the releasable member and pivotally connected by one of its ends to the bolt, whereas the other end of the bar is adapted to co-operate with a retractable stop controlled from a distance.

Abstract: A double changeable tumbler lever type key lock for safe deposit boxes and the like having a slidable bolt plate carrying a stack of fence members, and a stack of tumbler levers occupying positions in the locked condition to bar retraction of the fence members and bolt plate from locking position. The tumbler levers each have first and second lift edge portions and are movable responsive to a guard key and a renter's key engageable with the pair of lift edge portions of each tumbler lever to position the levers to permit retraction of the bolt to unlocking position. Mounting structure on the bolt plate supports the fence members of the stack for guided adjustment to positions corresponding to a predetermined range of key shapes and for selectively clamping the fence members in their adjusted position.

Abstract: A lock includes a running plate formed integrally with a locking bar and provided with a fence adapted to cooperate with a plurality of tumblers so as to alternatively block and allow retraction of the locking bar, and this mechanism is mounted together with the cooperating components within a lock housing. The tumblers allow retraction of the locking bar when moved by a prescribed key to a unlocking position and this prescribed key, which can move the tumblers to the unlocking position, can be exchanged with another prescribed key by displacing the rotational axes of the tumblers. The rotational axes of the tumblers are rotatably released or fixed by a conversion shaft extending through an opening formed in the tumblers and rotatably supported in the lock housing. The conversion shaft is provided with a stop piece and a locking piece.

Abstract: Disclosed is a keylock having a key settable lever tumbler which can be bent, by use of an operating key, from an initial neutral configuration to set it to the operating key, and which by use of a change key can be restored to its initial configuration and then reset to other operating keys. The tumbler can be rebent and reset to different keys a substantial number of times. The accuracy of the rebending is assured by imparting an overbend which accommodates the spring back that accompanies the rebending.

Abstract: In a security door lock a pivoted detent deadlocks the bolt by engagement of a stump in pockets provided in the bolt. The detent is normally held in its locking position by a cam surface on the thrower and by a pack of detainers. Rotation of the correct key aligns notches in the detainers with a probe on the detent and also positions a second cam surface of the thrower adjacent to the detent, so the detent can pivot to its unlocking position under the action of a spring, and thereby free the bolt. After the bolt is shifted the final rotation of the key re-engages the cam surface against the detent to drive the detent positively back to its locking position. If required, the bolt can be double-thrown by a second ("master") key which lifts the detainers to higher positions so that second notches in the detainers now align with the detent probe. This higher lifting of the detainers also lifts a dogging slide so that the stump of the latter can pass over a projection on the bolt tail.

Abstract: A door lock comprises, a casing; means rotatably mounted in the casing for actuating a lock bolt between the locking position and release position of the lock; means for locking said rotatable means against rotation when the lock is in its locking position, the locking means capable of relieving the rotatable means from locking when the key is inserted and the rotatable means is turned by an external action that does not route through the key.

Abstract: A changeable safe deposit lock, usable in a single key or a double key configuration, having one or a pair of stacks of vertically slidable adjustable fences carried on a bolt plate and held in adjusted positions by a clamping assembly having a changing screw which is accessible at the back of the lock when the bolt plate is in unlocked position. After insertion of a key for which the lock is presently conditioned and rotation of the key to the unlocked condition, the screw may be loosened and the key rotated an additional distance whereby the initial key can be removed from the lock and a second key may be placed in the lock and rotated to return the bolt plate to the locked position and the changing screw tightened down to lock the fences in the new position adapted to the new key.

Abstract: This invention relates to a security device for removably locking two mobile elements together, for example a door and the frame on which it is mounted. In particular, the device is in the form of a lock, and is intended for fixing to one of the elements, for example a door, and includes an engagement member such as a bolt, able to move from an engagement position to a disengagement position and vice versa, control means, for example a key for the engagement member, and one or more elements for transmitting the operation of the control means to the engagement member. Each transmission element comprises two or more sectors able to move towards and away from the respective transmission element. Each sector cooperates with a sliding rocker element able to interact with the engagement member and be controlled sequentially by the control means by way of one or more transmission elements, to allow movement of the engagement member.

Abstract: A lock particularly for safe doors, of the multiple rotatable tumbler type, but adapted to be operated by a key, the "combination" of the lock being set by the key proper and being alterable at will by changing the relative arrangement of its bits.A key with changeable bits for use with the said lock is also described.

Abstract: The lock configuration described in the parent application enables a dual key lock to operate efficiently, accurately and conveniently with a single stack of tumblers. Also, the individual tumblers of the invention are typically receivable in the lock in a plurality of alternative orientations in which their gates assume different functions, facilitating key changes. The present application discloses means for further improving the precision of gate positioning in such locks, and remarkably simple and economical means for adapting such locks for either right- or left-hand installation.

Abstract: The invention provides an improved lock configuration by which a dual key lock can operate efficiently and conveniently with a single stack of tumblers. That configuration permits more accurate positioning of the tumblers upon key operation, whereby a larger number of key combinations can generally be accommodated. Also, the individual tumblers of the invention are typically receivable in the lock in a plurality of alternative orientations in which their gates assume different functions. That difference of function may constitute a change of effective gate position with respect to the same key, or may shift cooperation with the two keys from one pair of gates to another. That aspect of the invention is useful in facilitating key changes, especially in locks designed for safe deposit and similar service.

Abstract: A changeable multiple key lock for safe deposit boxes and the like, including a locking bolt slidably movable in a lock case and having a pair of longitudinally spaced fence members, two stacks of peripherally gated tumbler wheels rotatably supported in the path of unlocking movement of the fence members having gating recesses to receive the fence members to permit bolt retraction to unlocking position, and two sets of key operable pivoted sector levers having gear teeth couplings with the two stacks of tumbler wheels to be operated by a guard key and a renter key. The two sets of sector levers are pivotally mounted eccentrically on posts which are rotatable to positions decoupling the levers from their associated tumbler wheels by a change key to free the sector levers to assume new positions for a new renter's key or a new guard key.

Abstract: The invention relates to an improved device for opening a lock and a means for actuating the device. The device is characterized by a moving plunger or rotating wheel which is provided with slots which mesh with at least two rocking tumblers which engage the slots when they are biased by a reference card and thus prevent movement of the plunger or wheel. The rocking components can be disengaged from the slots when they in turn are biased by the proper keycard, thereby freeing the plunger or wheel and allowing operation of the mechanism of the lock.

Abstract: A double key changeable safety deposit lock includes a movable bolt and associated bolt plate including cam surfaces to be engaged and moved between open and closed positions by turning renter and guard keys in the lock, a plurality of gated tumbler renter key levers to be engaged by the renter key, a plurality of gated tumbler guard key levers to be engaged by the guard key, each of the levers being moved to align their respective gates to receive latch members on the bolt plate upon manipulation of the two keys to allow opening of the lock and wherein pivot means are provided for each lever including a plurality of individually selectable pivots such that the pivotal axis of each lever may be selectively varied to provide for different combinations of lever movement required by an associated key to align the associated gates.

Abstract: Security panels mounted for opening or removal and having a lock mechanism that may be operated by a key from one side and an emergency release mechanism from the other side. The lock mechanism comprises a pair of slide levers disposed on opposite sides of a set of tumblers, one slide lever being engageable by a key inserted through a key opening on one side of the panel, the other slide lever being accessible from the opposite side of the panel through a slot opening. The emergency release mechanism is supplied as a subassembly which is field installed and comprises a support bracket and a bell crank pivoted from the bracket. One portion of the bell crank extends through the slot opening for engaging the other slide lever and operating the lock mechanism when contacted by a force applied in the direction for opening the panel.

Abstract: A bit key lock is improved by the provision of at least one deadplate fixedly position nonsymmetrically with respect to the lock between tumblers so as to interfere with the turning of any key not allowing for the presence of the deadplate. By reason of the nonsymmetrical positioning of the deadplate, different keys are required to actuate the lock from opposite sides. A master key may be provided by allowing for the alternate position of the deadplate relative to the opposite sides of the lock.

Abstract: A tumbler wheel type lock mechanism for use in key locks, dial operated combination locks and the like, including plural tumbler wheels in a lock casing having gated rim portions encircling hub portions which may be adjusted to different angular positions relative to their associated rim portions. A pivoted fence lever is normally releasably latched in a raised inactive position, and a releasing spring is activated by a control cam to impact against a shoulder formation on the fence lever for releasing the latter from such latched condition and impelling it to coupled relation with the control cam when the tumbler wheels occupy a predetermined alignment whereby the lock cam can be unlocked by operation of the control cam.

Abstract: A lock construction for a safe deposit box requires two keys for operation of the bolt. The first key is provided by the vault guard and the second key is provided by the customer. Each key activates a separate set of wafer-like tumblers by rotating the tumblers in response to rotation of the key. Each set of tumblers includes a plurality of key engaging drive tumblers which are gear engaged with gate tumblers. Appropriate rotation of the keys orients a notch of the gate tumblers that permits withdrawal of the bolt. Stops are provided on the bolt cooperative with key operated shifters to insure sequential operation of the keys. A change key tool may be inserted from the back side of the lock to disengage the drive and gate tumblers. Subsequent to disengagement of the tumblers, it is possible to substitute one or both of the keys and thus change the relative gear engagement of the tumblers.