Abstract: A lock mechanism comprises a plug slidably to a home position into a cavity of a block which plug has a recess for receiving side-by-side plates.Said block has a receptacle for receiving a similar set of spring biased plates. The front base of said plug a keyway with rectangular cross section communicates with said recess at a position close to the bottom thereof. A key is also provided for said mechanism which is made up of as many bars as are the plates.The plates in said recess have a bevelled corner. The bevel plane of the plates and of the key bars being the same.When the key is inserted home into said plug the bevelled point of each bar of the key engages the bevelled corner of a corresponding plate in the recess and lifts it to come flush with its upper edge with said recess aperture whereby the mechanism is unlocked.When the key is withdrawn from said slot the plates in said receptacle are moved by the related springs to enter the plug recess and block the mechanism thereby.

Abstract: A key operated locking device of the type using a coded magnetic key to operate a plurality of correspondingly coded magnetic tumblers. The device serves to selectively lock and unlock relative rotation between inner and outer coaxial cylinders in which the inner cylinder has a keyway disposed therein for receiving the magnetically coded key and also carries a plurality of spring-biased magnetic tumblers which magnetically interact with the key. The outer cylinder is provided with a plurality of detents cooperating with the magnetic tumblers wherein the tumblers are normally spring-biased into engagement with the detents of the outer cylinder and are unlocked therefrom by inserting a properly coded magnetic key into the inner cylinder keyway to withdraw in concert the tumblers from the detents by magnetic attraction.

Abstract: A combination lock, including a plurality of dials and associated sleeve ns for each dial, has a plug member which is longitudinally movable to first and second positions and which is cooperable with the sleeve means for being locked in the first position when the dials are off combination. A manually operable latch member formed to engage a hasp is longitudinally movable from a latching position to an unlatching position only when the plug member is not locked in the first position. Longitudinally movable pullers are provided for moving the latch member from latching to unlatching position and from unlatching to latching position, respectively.

Abstract: A steering lock for vehicles such as motor cars, motorcycles, etc. of a construction, wherein a circular cam is fitted on an operating shaft which is integrally formed with an inner barrel of a cylinder lock in a manner to be rotatable with the operating shaft, a sliding member is provided so as to be engaged and held on the peripheral surface of the circular cam, a locking pin is fitted onto this sliding member, whereby, when the operating shaft is turned to a locking direction, the sliding member is pushed in the direction perpendicular to the operating shaft by means of an eccentric pin provided on the circular cam, while releasing the sliding member from its engaged relationship with the circular cam by means of a notch formed in the circular cam, and the locking pin is thus engaged with the locking hole provided in a shaft of a steering wheel.

Abstract: A cylinder and plug type lock mechanism drivingly connects an authorized key to the actuator of a switch device and captivates the key when turning the switch on. A magnetic latch activated in the captive position of the key, prevents return of the key to its release position. A magnetic release element is positioned on the key against the lock mechanism to disengage the magnetic latch.

Abstract: A bar lock assembly secured to opposing door members for constraining the door members each to the other. The bar lock assemblies include a pair of strike plates utilizing the tooth in groove mating concept which have lug members interfacing with each other. A locking mechanism is inserted through bores formed in each of the lug members to secure the strike plates to each other. In one bar lock assembly modification each strike plate includes a tooth member insertable into one of a set of rectangular channels formed in a portion of the periphery of an opposing strike plate lug member. The channels are formed within three surfaces of each lug member to permit the strike plates to be mated in a substantially co-planar manner or perpendicular to each other.

Abstract: The main housing is an exact size for insertion in the conventional door, is adjustable for door thickness and allows conventional hole cutting and preparation. This housing is cylindrical, and has two sides with working parts built in one side, each side having an external or internal threading to be screwed together. Only one screw is used in installation to connect the two inside and outside sliding recessed plates together.The latch is retracted by means of a wheel and rod following a cam track, aided by a spring positioned in the latch housing. The track is V-shaped and in the latch housing wall, the wheel and rod traveling down one side thereof after a pull is enacted, or the other side thereof after a push is enacted. The wheel is connected to the latch bolt by the rod.From the opposite end of the latch the latch bolt is inserted into the hollow pinion housed in the main housing to react to the push and pull.

Abstract: A slide-bolt type latch locking means is disclosed including a rotary member mounted on a shaft for engagement with a latch bolt to hold the latch bolt in locked condition; a rubber washer is compressed by the rotary latch lock and prevents rotation of the latch lock by vibration of the supporting member to maintain the latch lock in position but permitting manual rotation of the latch lock to permit unlocking of the latch-bolt. Another embodiment employs a rotary latch lock mounted on a slide bolt with a radial slot alignable with a fixed lug to permit movement of the slide bolt to an opened condition, a movement not possible when the slot is not aligned with the fixed lug; a compressible washer maintains the latch lock in any given position of rotation.

Abstract: A plastic privacy lock for recreation vehicles and the like includes an outside handle portion for the outside of a door and an inside portion for the inside of a door. The outside portion includes an outside handle having a rotatable outside latch lever to operate a bolt on the inside portion. The inside portion includes a handle and a housing with the bolt in the housing. The bolt and an inside bolt actuator are formed as a single integral molded plastic part positioned within the housing. To move the bolt out of engagement with a strike from the inside, manual operation of the molded plastic bolt against the force of a biasing spring is required. A locking bar or dog having a locked and unlocked detent position is also provided in the housing. The locking bar is accessible from the inside portion of the lock. In locked position, the locking bar holds a bolt shifter connected to the outside latch lever to prevent rotation and operation of the lock.

Abstract: The rotatable plug of a cylinder lock has an axially extending outwardly open cavity paralleling a key slot and normally registering with an axially extending groove in the inner wall surface of the surrounding cylinder, the groove and the cavity being bridged by a locking bar with sloping flanks cammable radially inwardly, against the force of compression springs within the recess, upon rotation of the plug relative to the cylinder. Seated in the cavity are a plurality of axially spaced tumblers which are freely rotatable about pins transverse to the cylinder axis and have recesses alignable, in a predetermined operating position, with respective projections on the locking bar to enable the inward camming of the latter; each tumbler carries a pair of permanent magnets confronting a thin partition between the cavity and the key slot.

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 lock mechanism having a casing through which a spring-biased bolt is slidably movable, the bolt having an end which can be normally extended for a relatively short distance beyond the casing to assume a so-called "latching" position. A slidable sensing bar is arranged alongside of the bolt and in sliding contact therewith and the sensing bar is spring-biased so that it normally projects out of the casing for a distance co-extensive with the bolt while the bolt is either retracted or is in its latching position. A roller carried by the bolt is interposed between the bolt and the sensing bar and is confined in the casing in such a manner that while it rests upon a cam portion of the sensing bar, its bodily movement in the casing will be limited by a stop located therein and the bolt and the sensing bar will be maintained together in either the fully retracted position of the bolt or in its latching position.

Abstract: A lock and support device for fuel tanks holding acetylene gas and the like. The lock and support device includes an outlet cap, a locking bar, and an intermediate lock connecting ring that is connected between the outlet cap and the locking bar. The outlet cap screws over the outlet of the valve that is permanently attached to the top of the fuel tank in order to connect the lock and support device to the fuel tank and to cover the valve outlet. The locking bar may be used as a handle and as a means to prevent removing the outlet cap. The lock connecting ring is used as a means to support the tank in an upright position, and as a connection means for locking the tank to a fixed object.