Abstract: A cup with a saddle-shaped open end fits on a steering column over the ignition switch and forms a support bracket for the ends of a cross-chain of T-configuration, whereby one chain portion goes from one side of the cup around the column and the second chain portion goes from the crossing first portion over a steering wheel spoke, both chain portions ending at and lockably securable to the other side of the cup, to provide a removable device for securement of both the ignition switch and the steering wheel of the motor vehicle.

Abstract: A flat strip section fits in width and height into a keyhole and has non-operable teeth extending from the top and from the bottom. One end of the flat strip section is anchored in one part of a two part gripping stud. The second part is separably connectable to the first part by a detent connection.

Abstract: Apparatus for securing a doorknob against unauthorized entry. A shroud fits over the entire doorknob and its associated shaft, and extends to fit on or over the rose through which the shaft extends. A clevis fits through slots in the shroud to retain the shroud in place on the door knob and shaft. The present apparatus can be used to retrofit a lock onto an existing knob which has no locking structure, and also prevents tampering or unauthorized access to an existing built-in lock cylinder of a doorknob.

Abstract: The auxiliary locking mechanism of my prior U.S. Pat. No. 3,894,416 is more securely detended and greatly simplified in construction by forming the locking part of the mechanism that is to engage the surrounding metal as a rectangular body and forming a rectangular recess in the part of the surrounding metal that is to be engaged by the aforesaid locking part. The locking part is movable axially of the remainder of the mechanism so that when the mechanism is inserted into a rectangular opening in the side of the body remote from the rectangular recess, the locking part may be depressed and rotated to be aligned with the recess and then released so that it becomes seated in the recess and is securely detented.

Abstract: An ignition switch lock for preventing unauthorized access to the ignition switch of an automobile or similar vehicle is disclosed. The ignition switch lock includes a housing, one end of which is shaped to conform to the contours of a steering column. The device further includes a pair of movable jaws which may be moved into engagement with and locked around the rotatable portion of the ignition switch, and means for selectively controlling the movement of the jaws for securement of the device to the steering column.

Abstract: A steering column ignition switch protective guard having a cup member overlying and surrounding the ignition switch and a pair of flexible metal strap members each fixed adjacent one end to the cup, extending in an opposite direction around the steering column and each having an eye adjacent the other end through which the shackle of a padlock extends to retain and lock the protective guard on the steering column.

Abstract: A combination door handle and security locking system in which the conventional door latch is actuated by turning the five-sided head of an operating shaft with a special socket wrench. A hinge plate having a slot for a padlock bail and a flat index tab on its inner surface is rotated to cover the operating shaft head. The tab must fit against one side of the operating shaft head to allow the hinge plate to be fully closed so that a padlock can be inserted in the bail. The latching mechanism is designed so that this tab will fit against one side of the operating head when the door is fully latched, to thus prevent rotation of the latching mechanism. The free end of the hinge plate has an offset portion which serves both as a sleet hood for the padlock and as a handle for opening the door.

Abstract: An improved steering column ignition lock protective device having a casing with a shackle pivotally attached at a first end of the casing with a bolt lock positioned at a second end of the casing adapted to engage through an aperture in the shackle when the device is positioned around a steering column.

Abstract: A locking device comprised of a base plate secured about a keyhole and a cover plate pivotally disclosed thereon including locking means which can be disposed in aligned openings in the plates to selectively lock one to the other to either expose or cover the keyhole.

Abstract: An anti-theft device mountable around a steering post column of an automotive vehicle so to enclose the vehicle ignition lock and prevent insertion of a key thereinto by an unauthorized person; the device consisting of strong metal case having an opening on one side into which the ignition lock protrudes from the steering post column, the case being secured to the column by means of a U-shaped rod that fits around the column and into openings in the case wherein toothed notches along the rod are engaged by a sliding plate rigidly prevented from sliding by being stationarily locked with a padlock.

Abstract: A shackle is provided with a hollow base portion and a pair of brackets projecting from the base portion. The hollow base portion fits over the ignition switch mounted on a steering post of an automobile and is secured in place by a chain having an end secured to each of the brackets. A bolt having an enlarged head mounts one of the ends of the chain to one of the brackets via a nut welded to the inner surface of the bracket so that the chain is adjustable in length to fit variously-sized steering posts.

Abstract: A protective device for mounting on and encasing a lock operating member, such as, a door knob to preclude access thereto and operation thereof. The casing includes a generally rectangular front opening through which the knob projects and a slide member vertically slidable therein which is adaptable to receive a locking means for securing the casing in position to prevent the locking mechanism of the knob from being actuated or removal of the knob.