Abstract: The subject matter of the invention is a mechanical cabinet with a paternoster-like circulating conveyor comprising two endless chains (1, 2), a multiplicity of pull-out shelves (17) for receiving industrial articles, for example, and affixed with their end walls to the two endless chains (1, 2) at predetermined equal distances by way of pairs of supporting arms (7, 8), and stationary guide rails (18, 19) on the narrow sides of the cabinet composed each of two vertical sections (20) and an upper and lower arcuate section (21, 22), said rails guiding guide members (10) rigidly mounted to the end walls of the shelves (17). With such mechanical cabinets problems arise regarding safe and smooth guidance of the endless chains and the shelves, particularly when the latter are non-uniformly loaded.