Abstract: A cage for protecting computer equipment and the like, comprising a multiple number of spaced platforms among which such equipment can be mounted and secured therein without being capable of unauthorized removal. The platforms are secured together by pairs of rods having case hardened sleeves freely rotated thereabout, a lock mechanism being applied to the top of each of such rods, the unlocking of which provides an assembly and disassembly procedure for the cage. Up-turn lips on the front and rear edges of the lowermost platform, together with pairs of such rods and sleeves in the four corners of the cage, prevent removal in a sliding manner of any equipment mounted in the space between the platforms.

Abstract: This manufacture prevents an unauthorized removal of an article or equipment item, such as a typewriter, for example, from a table top or the like. The article is secured to a cover plate which includes a plurality of hooking members or ears on its underside. These hooking members in turn engage apertures the body formations for which are securely mounted to a flat plate that in turn is secured to the table top or mounting surface. To assemble cover and plate into a locked position, the cover and its ears are shifted in a direction for engagement of ears to apertures. In this position then, a tang on a cylinder lock mounted in the cover's periphery is rotated into abutment with an edge of the plate, and the lock locked. The cover can no longer shift in a reverse direction to disengage ears from apertures. Case-hardened sleeves are provided to prevent sawing of screws which secure cover and article together.