Abstract: A cantilever storage rack having posts with vertically spaced rectangular apertures and arms having U-shaped brackets embracing the posts. Each bracket has two pairs of vertically spaced rectangular apertures so that two pins connect the bracket and post. The lower bracket apertures are spaced slightly rearwardly of the upper apertures in a direction away from the face of the column. The result is that the cantilever arm is supported by the pins with area contact but is held away from the column, thereby insuring accurate vertical arm location.

Abstract: An industrial storage rack construction which receives cassettes, that is, elongated racks for heavy materials, in vertically arranged relationship. The cassettes are to be inserted in and retrieved from the rack, and the invention pertains to the means for supporting the cassettes. This means comprises a series of rollers from front to rear of the rack at each level, supported by anti-friction bearings, and a rigid bar with a convex upper surface across the rear of the rack. The top of this bar is at a level slightly above the leve of the rollers. Each cassette is constructed with lower rails which ride on the rollers when the cassette is being inserted. The rearward ends of these rails will ride up on the rigid bar as insertion is completed so that the cassette will be frictionally locked in place while still being retrievable by the exertion of a relatively small withdrawing force.