Abstract: A door locking assembly in which the latching mechanism of the assembly comprises a latch bolt operated by rotary means, which can be the door knob or a key operated tumbler, for normally operating the latch bolt, dead lock means for blocking the retraction of the latch bolt, auxiliary latch means having link means normally urging it into a position for moving the dead lock means out of latch bolt blocking position, electrically operable means cooperating with the latching mechanism for controlling the auxiliary latch means, lock bar means operative to prevent turning of the rotary means, and an operating element connected between the lock bar and the link means for the auxiliary latch means for determining the operative position of the lock bar means in relation to the position of the dead lock means relative to the latch bolt.

Abstract: A lock bar for securing a pair of door panels having lock and hinge edges in a locked position and indicating whether or not the panels are locked, including a pair of elongated hollow holding brackets having a rectangular cross section aligned horizontally and secured to the door panels adjacent the lock edges thereof, and an elongated, hollow, rectangular cross section, cross bolt extending horizontally through the holding brackets.

Abstract: An actuating mechanism, for putting into operation a ram-air turbine of an aircraft, includes a slide member linearly moveable and connected with a Bowden cable which is actuatable in dependence on a blocking mechanism. In order that the actuating installation can be operated in a simple and safe manner, the blocking mechanism is connected with a hand lever which in the opened condition releases the blocking mechanism and cooperates with a support element of the slide member in such a manner that the slide member is adapted to be displaced into an end position by means of the hand lever.

Abstract: A striker plate attached to the door frame or door jamb associated with a door provided with a dead bolt lock of the type having vertically reciprocating bolts received in aligned apertures in a pair of lugs attached to the strike plate. In the present invention, the strike plate is provided with lugs having a larger than normal area and which project inwardly of the body of the lock and have a second pair of aligned apertures for receiving a security pin so that when the security pin is in position, the door cannot be opened even if the lock bolts are retracted. In addition, the lugs have a third pair of aligned apertures receiving the security pin which has a safety chain or cable attached thereto and anchored to the lock or door so that the door can be opened a limited distance when the lock bolts are retracted thereby enabling an occupant to safely open the door a limited amount in order to determine whether the door should be completely opened or not.

Abstract: A latching and locking mechanism for sliding doors such as patio screen doors and the like, wherein a latch hook engaging a keeper may be unlatched by operating either an inside or an outside slide member, and the latch hook may be locked by a locking mechanism operable only from the inside of the sliding door. The latching and locking mechanism is lengthwise functionally symmetric so that it may be utilized either in doors opening from left to right or doors opening from right to left. The locking function is performed by a locking bolt which is cammed into position by an angularly disposed cam slot of a bolt actuator.

Abstract: A locking apparatus for a detachable sunshade for a vehicle which includes a detachable panel, a connecting pin, a sunshade detachably attached to an interior portion of the detachable panel and detachably engaged with the detachable panel at a rear portion thereof via the connecting pin, a shaft supported on the sunshade, an arm fixed to the connecting arm and the shaft, a locking handle pivotally supported on the sunshade and fixed to the shaft, a knob connected to the locking handle for rotating the locking handle and a torsion spring for biasing the connecting pin in a direction for engagement with the detachable panel.

Abstract: The invention proposes a tubular door lock of the type comprising essentially an elongated box casing for containing a control slide for the bolt, and provided with a plug which can be controlled from the outside for its positioning into a first inactive position in which said plug does not interfere with the path of said slide, and into a second active position in which said plug interferes with said path, and vice versa.

Abstract: A security device is presented which includes a dead man member to be imbedded in a door jamb and a sleeve and slide to be mounted upon the jamb. Also presented is a chain loop for coupling a door knob to the security device.

Abstract: The invention comprises a latching and unlatching device for use on a door, or bulkhead, or the like, which device has a blocking plate for internally obstructing the latch to prevent its retraction, thereby to prevent the opening of the door. The blocking plate is internally secured in place, in an intermediate slidable position, where it does not obstruct the latch, by a low melting point cover. In the presence of excessive heat, as on the occurence of fire, the cover melts; this allows the blocking plate to slide to another, operative position in which it prevents the retraction of the latch and, consequently, the unlatching of the device. The method comprises the steps to be undertaken to modify an off-the-shelf latching and unlatching device to insure that it will be held securely latched in the presence of fire or excessive heat, and the kit sets forth the structure elements required for the aforesaid modification of off-the-shelf, latching and unlatching devices.

Abstract: Herein is disclosed a novel locking mechanism for a sliding window or door of the type having an outer surrounding rectangular frame mounted to a wall, and an inner transparent pane mounted to a second rectangular frame slidably mounted within the outer frame. The locking mechanism is incorporated within one side of the inner frame and comprises a slide, a latch adapted to move and lock the slide, a deadbolt attached to the slide and adapted to extend into the outer frame to lock the two frames together, and a latch accessed through a latch port defined in the side of the inner frame. The latch port comprises a wider locking segment and a narrower adjacent unlocking segment, and the latch comprises a post attached to the slide and a button slidably mounted on the post and sized to extend through the wider locking segment of the latch port.

Abstract: A locking system for safe doors of the type comprising a turnable handle or handwheel for operating one or more sets of bolts between a locked position, wherein the bolts project into the door rim, and an unlocked position, wherein the bolts are withdrawn from the door rim. The system is characterized by bolt-securing means in the form of locking pins adapted to be inserted, in the locked position of the bolt, into aligned bores formed through each bolt and through a wall of a fixed bolt housing block slidingly supporting the bolt during the displacement thereof between the locked and unlocked positions.The pins are displaced into their locking or inserted position immediately after the locking of the bolts during a continuous rotation of the handle.

Abstract: In a first embodiment thereof, the locking means comprises an axially-translatable bolt slidably disposed within a cylinder. The cylinder has an axially-extended slot formed therein, and a pin fixed in the bolt projects therefrom, through the slot, to engage a camming slot formed in a sleeve which envelops the cylinder. A hollow cap-actuator envelops the camming-slotted sleeve, and a drive rib formed in the cap-actuator engages an axial separation in the sleeve to cause (a) the sleeve to rotate, when the cap-actuator is turned, (b) to cause the pin to travel along the camming slot, and (c) to effect extension and retraction of the bolt.

Abstract: A latch and lock mechanism for an aircraft cargo door assembly is disclosed. The mechanism is adapted to a cargo door assembly of the type having an outwardly opening, nonplug-type cargo ramp and an inwardly opening, plug-type cargo door hinged to opposite sides of a doorway so as to form a two-part closure member in coplanar alignment with the airplane fuselage when the door assembly is closed. The latch and lock mechanism preferably includes a plurality of latch units that secure the cargo ramp in its closed position. The latch units are connected through a cam-actuated interlock mechanism to the plug-type cargo door. The interlock mechanism is such that the cargo ramp latches can only be actuated when the cargo door is in an open position, and further such that the cargo door cannot be closed unless the cargo ramp latches are in a latched position.

Abstract: A self-interlocking dead bolt assembly for the door on a safe depository or like security container has a dead bolt guide mounted on the inner face of the door and a bore extends end to end through the dead bolt guide to permit an elongated dead bolt of high strength steel to be slidably mounted in said bore and movable to extend beyond said dead bolt guide for engagement with a strike or keeper to lock the door when it is in the closed position, and the bore has a locking groove inwardly of this end of the bore. The dead bolt has an inner bore or chamber which defines an annular wall thereon having a spaced plurality of sized transverse passages therethrough at a predetermined medial position.

Abstract: An alarm and locking device for deterring theft of removable vehicle rooftops. An alarm is sounded if an unauthorized attempt to remove a rooftop is made, while successful removal of the rooftop is prevented by a locking mechanism.

Abstract: A security door stop bolt mounted in the floor preventing entrance through the door including a tube housing imbedded in the floor with a door stop sliding in the tube, nestled in the tube when not in use but raised with a manual lifting means to prevent inadvertent triggering of the stop bolt with a carpet cut out attached to the top of the door stop to hide the entire mechanism.

Abstract: A tamperproof dead bolt device secured to a door jamb is disclosed including a stationary support plate assembly provided with a slotted section for a sliding dead bolt which in the secured position projects into the plane of the arc for opening the door. The dead bolt device further includes a lock member which prevents the dead bolt from being retracted from the secured position. When the dead bolt device is installed it is secured through the door jamb and wall partition to distribute the forces of an attempted forced entry over a larger surface area.

Abstract: An improved locking bolt mechanism. The locking bolt mechanism comprises guide means, a lock bolt, and means for adjustably mounting the lock bolt to the guide means so that the lock bolt can be easily adjusted relative to the closure it is mounted on.

Abstract: A personal security door arrangement constituted by the juxtaposition of two doors, which may be coupled together at will, in one same frame in an opening, the outer door affording complete visibility and, possibly, the passage of small objects, while the inner door is conventional. Said doors are hingedly mounted to the frame on the same side, rotate in the same direction and have interrelated lock arrangements.

Abstract: A door lock comprises a latch and a mechanism for locking the latch which includes a pivotal element having at least one arm engageable with the latch to withdraw it to the open position a locking bolt depressable to move into a blocking position to prevent to swivel the pivotal element to withdraw said latch, and a key-operable unlocking lever for moving the locking bolt out of the blocking position to permit to swivel said pivotal element, the lever having a catch operable by the key.

Abstract: A support plate is removably fastened to a sewing machine bed by a retaining device, which device when not in use may be depressed into a position flush with the sewing machine bed. The retaining device has two stable positions for a latch body having a flange on the upper end thereof which may retain a support plate by overlying a slot thereof.

Abstract: A burglar proof fire safe window covering is disclosed. The device comprises: a plurality of vertical bars slidingly supported at an upper and a lower end by a pair of spaced apart tracks; a plurality of pin engaging apertures at the upper and lower ends of the bars; an upper and lower plurality of vertically movable pins releasably biased into engagement with the apertures; and means for releasably engaging the pins in the apertures. A device is provided for aligning the apertures with the pins when the bars are deployed in an extended position. The window is designed so that it can be quickly and easily opened from the inside for escape of the buildings occupants in the event of a fire.

Abstract: A locking mechanism is provided having a frame for mounting on a door or other closure. A movable bolt is supported on the frame for movements between extended and withdrawn positions. An additional member is mounted on the frame for slidable movements generally parallel to the bolt. At least two locking means are incorporated into the locking mechanism, the first of which releasably connects the bolt to the member, and the second of which releasably positions the member with respect to the frame. With the first locking means engaged, the bolt is movable together with the member. With both the first and second locking means engaged, the bolt is locked in the extended position. A securing means engagable with the first locking means prevents release of the first locking means. The locking mechanism is particularly adapted for use on storage compartments wherein a renter of the compartment will gain access by way of the first locking means and the owner will gain access by way of the second locking means.

Abstract: A positive locking device for mounting to lightweight structures and doors, such as found in mobile homes, wherein the device comprises a bar-locking assembly which is mounted to a door, and includes a bar-receiving frame section generally mounted to a fixed structure associated with the door to be locked. The bar locking assembly includes a mounting plate having a sleeve to slidably receive an elongated bar therethrough, the bar including a longitudinal adjustable head member and a plurality of aligned holes to receive separate locking devices, whereby the bar is locked from longitudinal movement after the bar is received in the bar-receiving frame member.

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 fixed latch lock structure including a housing, at the rear and the front of which is symmetrically located a hole at each end with a movable shaft latch passing through. The shaft latch can be latched forward in a fixed hole in a fixed stand manually and can promptly press back automatically from the latching position to where it was by the controlling of the following installation: a control plate in the housing, a spring sheet at the bottom of the housing and the spring extending around on the shaft latch.

Abstract: Corrugated board container with side wall which hinges outwardly for introduction and access to contents.

Abstract: A method and electro-mechanical device for locking and unlocking mobile cargo-container doors, utilizing a re-settable electronic combination lock arrangement installed within the cargo container, which electro-mechanically retains a special locking pin inserted through a channel in the container door structure, such locking pin being mechanically coupled to the existing latching handle on the door exterior. The locking pin, when retained by the electronic lock mechanism, restricts travel of the container door handle sufficient to prevent opening of the container door. A keyboard array of switches on the exterior of the cargo container, coupled to the electronic lock circuitry on the container interior, must be actuated in pre-selected code sequence to energize the electronic lock mechanism, thus releasing the locking pin and enabling manual movement of the door handle as required to open the container door.

Abstract: A doorway is protected against unauthorized entry by a sliding bolt that extends at an angle through a hole in the unhinged side of the door and the jamb and stud. A ring member fastened into the door retains the bolt in locking position and also provides hanging storage for the bolt when withdrawn. The door hinges have internal pegs that keep the door closed even if the exposed hinge pins are removed.A template is provided for forming the angled hole in the door, jamb and stud.

Abstract: A door latch bolt locking device for use with a latch bolt having a transverse groove or kerf in its top surface and which will positively prevent the withdrawal of the latch bolt. The device comprises a slideable member adapted to be substantially flush with the intersecting edge surface of the door and the inner surface of the door. The slideable member will have a first portion which will be substantially flush with the inner surface of the door and an integral tongue portion at a right angle to the flat portion and adapted to be substantially flush with the edge surface of the door. The locking device is also provided with means for allowing the slideable member to be moved through a limited vertical distance in a substantially flush relationship with the door surfaces so that the tongue member can move into and out of the kerf provided in the latch bolt to thereby lock the door.

Abstract: A mechanism which may be added to existing conventional type cylindrical door locks at the time of manufacture thereof or to such locks already in the field with just a slight modification of the existing lock. The structure of the added security mechanism blocks the throw of the latch bolt and at the same time blocks the retractor to positively prevent opening of the lock by key, turning of the knob, or tampering with the latch. The security device is tamperproof as it is inserted into the interior of the cylindrical lock and can only be disengaged to allow entry from inside the building structure. The lock cannot be opened from the exterior of the door when the security device is engaged, by any conventional method or tampering.

Abstract: A latch mechanism having a latch member defining a slide portion received in a track channel. The slide portion is slidably guided by the track for movement between a latching position and a retracted position. A helical spring is provided for biasing the latch member to the latching position and a force transfer member is disposed between the end of the spring and the latch member slide portion in the channel for preventing catching of the spring end between the latch member and the track member in the channel.

Abstract: A high strength, self loading, gravity biased security lock for positive securement of doors, windows and similar closures is disclosed. The security lock includes a pair of mounting elements, i.e., a bolt assembly and a latch assembly, formed for rapid and simple mounting of the assemblies to external surfaces of a door and door frame without the need for modifying or altering the construction of the door. The assemblies can be mounted to either right or left opening doors or floor mounted, and the fastening elements used to mount the security lock to the door are located in inaccessible positions when the lock is in the latched condition.

Abstract: A security lock for doors which may be unlocked from one side of the door only, and comprising sliding bar or pin means selectively engagable with the oppositely disposed door frames for locking the door against entry therethrough by unauthorized personnel. Knob means accessible from one side of the door only is operably connected with the bar means for positively locking thereof in the engaged position with the door frame, and quick relase means is provided for cooperation with the knob means for release of the locking engagement of the bar means with the door frames in order to permit passage through the door under panic conditions, or the like.

Abstract: Apparatus for securing the latch bolt of a conventional door lock against unauthorized withdrawal including a pin assembly provided with a handle, wherein the pin assembly can be alternately stored in a retainer plate or secured thereby in a locked position. More specifically the retainer plate includes an opening conformed to receive the pin of the pin assembly, said opening being aligned with a bore extending through the door into the latch bolt. Adjacent the opening there is provided in the retainer plate a storage hoop which is conformed to function both to store the pin assembly and to secure the handle when inserted.

Abstract: A window latch and handle assembly exhibiting an attractive appearance while providing a high degree of strength and small size. The assembly employs a pair of body members which are secured to a door or window frame and a unitary handle and latch. The handle extends from one side of the assembly of the two body parts and the latch from the opposite side thereof. A lock member with an elongated arm surface engages a key slot in the handle and latch. When in one orientation, the locking member allows the handle and latch to move laterally against the resistance of return spring and when turned 90.degree., effectively prevents movement of the handle and latch by direct broad area contact with one of the body parts. When rotated 90.degree., the lock member rests in the key slot allowing limited movement of the handle and latch to release the door or window.

Abstract: A latching assembly for latching the swingable door associated with a cap as mounted over the bed of a pickup truck. The latching assembly is activated by a manually rotatable handle mounted centrally of the lower edge of the door. The latching assembly includes a pair of elongated rigid rods which project outwardly toward the opposite sides of the door and have latching bolts mounted on the free ends thereof, which bolts are disposed for latching engagement with the adjacent side jams. A removable fastening element, such as a screw, coacts between each bolt and the respective rod for permitting the bolt to function either as a deadbolt or as a spring-bolt. When the fastening element is present, the bolt is rigidly secured to the rod and functions as a deadbolt so that the handle must be manually rotated to move the bolts during both opening and closing of the door.

Abstract: A security lock which secures a building entrance against unauthorized entry by linking together the outer and inner doors against their respective door frame stops. This invention comprises link members wherein one member thereof is anchored to the outer door and the other member is a hinged link which passes through the inner door and is prevented from being withdrawn by a manually operated latch. When the security lock is not in use, the hinged link is pivoted out of the way.

Abstract: A safety lock for enclosures having a first lock portion attached to the first of two members to be locked together. This lock portion includes a bolt rotatable for accomplishing a locking function. The bolt has a head of non-conventional shape. A second lock portion is attached to the other of the members to be locked together and is engageable by the bolt. The first lock portion includes a protective wall peripherally surrounding the bolt head and open at its outer end. The surrounding wall defines a socket which is at least as deep as the thickness of the bolt head to prevent side engagement of the bolt head and which is of greater diameter than the bolt head to permit removal of the bolt by a special wrench inserted through the open end of the protective wall. The second lock portion in one embodiment includes a pin having a radial notch intermediate its ends engageable by the bolt to provide a more positive lock.

Abstract: An assembly for releasably locking doors, windows and the like. A lock pin movable between locking and unlocking positions is retained by a lock bar in both of these positions with the lock bar also preventing removal of the lock pin from the assembly.