Desk and tray structure

Claim 1

A desk structure comprising a desk case open at one side facing an occupant and having a pair of opposing sides provided at their bottoms with inwardly turned ledges, a tray removably supported by said ledges and removable through said open side, a pair of tubes of square cross section supporting each side of said desk case, a pair of brackets, one fixed to each side of said case and providing a vertical channel with the web and sides thereof at right angles to each other, each web being located on the outboard side of said channel and attached to an associated side of said desk case, said square tubes having adjustment openings vertically spaced therein and each pair of tubes extending Into the channel formed by an associated one of said brackets, a clamp member for each bracket having lugs engageable with said adjustment openings of a pair of said tubes, said clamp member located on the side of its associated pair of tubes opposite the location of said web and having a V-rib wedge extending between said associated pair of square tubes at a location opposing the web of the associated bracket whereby each pair of tubes is constrained on three sides by one of said brackets and on the fourth side by one of said clamp members, and bolt fastening means engaging each bracket web and its associated clamp member and extending between the tubes of an associated pair of tubes for pressing said wedge of said clamp member between said square tubes therebetween and toward said web and to induce a clamping force on each of said tubes forcing it diagonally from the contact area of said V-rib wedge into the corner of said bracket.