Adjustable storage rack

Claim 1

A storage rack comprising spaced parallel uprights, each having a front web and a side wall extending rearwardly from each vertical edge of the front web with a corner portion where each side wall joins the front web, the side walls being parallel, each upright having a succession of equally spaced notches in each corner in such manner that a portion of the front web is open at each notch and a portion of the side wall is open at each notch and the opening in the side wall at each notch has the portion remote from the front web deeper than the opening in the web, and at least one load-supporting arm member on each upright, each arm member having a yoke with a front wall and side walls arranged to fit against the front web of the upright with its side walls close against the side walls of the upright on which it is carried, the two side walls of the yoke having confronting opposed studs thereon projecting inwardly from the side walls of the yoke parallel with but spaced rearwardly from the front wall of the yoke, the arrangement being such that when the yoke is moved in a direction to embrace the upright the notches enable the studs to clear the front web and then the yoke may be lowered to enter the studs into the deeper notch portions in the side walls with the front wall of the yoke against the front web of the upright and the weight of the arm member and any load which it supports is transmitted through the studs to the side walls of the upright, the yoke having the load-supporting arm member rigidly secured thereto And projecting forwardly from its front wall, wherein each side wall of the yoke has a hole therethrough that registers with a portion of the notch in each of the side walls of the upright when the studs of the yoke are seated in the deeper notch portions in the side walls of the upright, and a removable pin passing through the holes in the side walls of the yoke and through the open portions in the side walls at each of the notches in the side walls of the upright and so positioned that the pin has a sliding clearance at the inner face of the front web of the upright to removably clamp the yoke against accidental displacement or removal from the upright as long as the pin is in place.