Cassette rack

Claim 1

A pair of holders each for boxed and unboxed magnetic tape cassettes comprising: a pair of spaced parallel rack side pieces including confronting shelves for holding opposite ends of a number of said boxed cassettes in a stacked arrangement; each of said shelves being spaced from the adjacent shelves for a dimension greater than the thickness of one of said boxed cassettes; said holder also including back wall portions for aligning said boxed cassettes with the fronts thereof in the same vertical plane; said shelves being cut away on the upper portions thereof to define nesting recesses for holding opposite ends of said unboxed cassettes in said stacked arrangement when desired; said nesting recesses being each in part defined by a forwardly and upwardly facing rear face at a dimension from the front of said holder such that said unboxed cassettes are held with the fronts thereof in the same vertical plane as the fronts of said boxed cassettes when the latter are engaging said back wall portions; spacing means extending between said side pieces for securing said pieces in said spaced parallel condition; said side pieces being formed with a Pair of parallel planar side walls, and said back wall portions being formed as flanges integral with said side walls and extending toward one another to prevent rearward sliding of at least said boxed cassettes off said shelves at the back portion thereof; each of said side pieces having a pair of top walls and a pair of bottom walls formed as flanges integral with said side walls and said back wall portions and each of said top and bottom wall pairs extending toward one another so as to present confronting sides and edges, respectively; each of said holders having corresponding identical key protrusions and keyway cutouts disposed for mating with the keyway cutouts and key protrusions of the other holder, for locking said holders together in an assembly configuration; said keyway cutouts and key protrusions being in said top and bottom walls, particularly for locking said holders against relative horizontal movement in a vertically stacked assembly configuration; and said protrusions for each holder including downwardly turned flanges formed at the confronting edges of said bottom walls, said last-named flanges being adapted for fitting between and snugly against the confronting sides of the top walls of the other holder when said other holder is stacked therebelow.