Abstract: A locking device for securing the coin box of coin operated vending and amusement machines is provided. An elongated flat locking bar is pivotally connected to the face of the coin operated machine by means of a spring loaded pivot pin for swinging movement parallel to said face between a locking position extending across and in close juxtaposition to the access door of the coin box and an open position permitting access to said door. A locking pin extends through an opening in the free end of the locking bar and a corresponding opening formed in the face of the machine to a point on the interior of said machine adjacent to the coin box. A barrel lock normally provided to lock the access door of the coin box is fitted with a lever having a retaining notch formed therein which is adapted to engage the inner end of the locking pin in its locked position. Access to the barrel lock from the exterior of the coin operated machine is obtained by a suitable opening formed in the locking bar.

Abstract: An improved and simplified lock housing assembly for positioning and retaining lock or latch assemblies in cutouts in glass doors provided for that purpose which, outside of standard components such as screws, uses extrusion produced components so that the requirement for heavy machining and complex manual assembly is eliminated. The assembly includes a pair of spacers cut from the same extrusion which nest against an extruded elastomeric, channel shaped grommet about the cutout and position the lock assembly. The spacers are retained in the plane of the door by lengths of extruded plate which are fastened by screws to the opposite sides of the spacers and extend over upper and lower portions of the grommet. The screws and the grommet portion still exposed are in turn covered by extruded cover plates which include channels which slide over and dovetail with chamfered edges of the screw plates.

Abstract: A combination lock monitoring system for recognizing and indicating electronically the condition of operation of the lock, the recognition being achieved by photo sensitive means responding to the light reflecting quality of areas on the lock bolt mechanism, the lock drop arm and a combination wheel of the combination lock, the electronic circuit responding through a binary code to the condition of the photo sensitive means, and the indication including a visual display.

Abstract: The invention provides a locking pin (G) comprising a loop (B) and means (R) for pivoting the loop on the locking pin so that said loop (B) may be brought back to surround the spindle (A) in which the locking pin is engaged so as to oppose removal of said locking pin. The pivoting means (R) comprise a mobile bearing (6) supported by two substantially parallel arms (8, 9), the assembly being such that in a "high" position the arms extend on a side which moves the bearing (6) to a maximum away from the opposite end (e) of the locking pin, whereas in a "low" position, said arms (8, 9) have rotated with respect to the "high" position. The locking pin may pass through the loop when the arms are in the "low" position but cannot pass through the loop when the arms are in the "high" position.

Abstract: A threaded fastener designed for anchoring imbedment into masonry structures and more particularly into masonry structures which include relatively hard aggregate. A critical distinct relationship between parameters of a fastening system such as the lead angle of the thread, the included angle of the thread, the depth of imbedment of the crest of the thread in a bore of predetermined diameter exists in order to create an adequate effective fastening system for hard aggregate masonry or concrete.