Abstract: A shelving unit including corner posts on which shelves are removably and adjustably mounted through the provision of sleeves provided at the corners of the individual shelves. In association with each sleeve, there is provided a saddle acting as a spacer between the sleeve and post. The saddle initially is interengaged with the posts through the provision of a lug and complementary recess on the saddle and post respectively. As one function of the saddle, there is defined a point of reference for aligning a threaded opening of the sleeve with the lug of the saddle, through the provision of a lip or abutment on the saddle engaged by the sleeve when it is lowered to its selected position along the length of the post. At this time, a threaded opening of the sleeve registers with an outwardly facing recess of the saddle defined by the formation of the saddle lug.

Abstract: A shelving system, of the type adapted for swift assembly and disassembly, has an improved upright and shelf structure in which each shelf is swiftly attachable, without the use of tools, at its corners to transversely spaced posts of the upright. The upright is a ladder type, incorporating vertically spaced cross braces extending between vertical posts each of which comprises inner and outer post elements that allow insertion of a shelf without necessity of its being tilted or cocked. Each shelf is formed at its corners with right-angular, inwardly extending locking tongues or tabs, initially locatable, during assembly, in wide spaces defined between the inner and outer post elements. With the shelf in horizontal position, it is permitted movement downwardly from the wide spaces into narrower spaces in which the corners of the shelf lock, with the shelf being supported upon the cross braces of the uprights.