Abstract: A hand brake mechanism for a central processing unit cabinet comprising a base and a handle, wherein the base is fixed on the bottom of the cabinet and located between two wheels provided on the cabinet. A pair of engaging rods, each engaging rod having a guide pin at one end, are provided on both sides of the base. The handle is combined with the base, and is slidable thereon. There are a pair of guide plates provided on the handle at a location corresponding respectively to each of the engaging rods. The guide pin of the engaging rod comes into contact with the edge of the guide plate. When pushing or pulling the handle, the guide pin slides along the guide plate, and the engaging rod moves axially, to engage or disengage the wheels of the CPU cabinet.

Abstract: A tilt swivel base for a video terminal includes a lower section which is supported by way of a swivel so that the lower section can be swiveled relative to a supporting surface. An upper section is supported on the lower section, the two sections mating at surfaces which are curved from the front to the back of the base about an imaginery axis which is located appreciably above the base. The upper section is movable relative to the lower section forwardly and rearwardly so as to adjust the tilt angle of the upper section and of a terminal supported thereby relative to the supporting surface. Structures for controlling the relative motion of the upper and lower sections as well as establishing their relative positions are also disclosed.