Abstract: A structure such as a rack comprises columns connected together by beams, positioned in transverse relation to the columns. The rack is provided for use in warehouses or elsewhere. For example, pallets may be placed across pairs of beams for storage in the rack. By this invention, means are provided for retaining the beams and columns in a range of positions of registry in which first apertures in the columns and second apertures in the beams overlap in offset relation. Bolts extend through the overlapping first and second apertures, with the first and second apertures being each of larger diameter than the bolt means. The distance of overlap between the first and second apertures should be typically less than the diameter of the bolts. As a result of this, the beams and columns can be tightly affixed together by the bolts despite unpredictable positional variations in the beams and columns as they are so affixed.

Abstract: A storage rack comprising a plurality of bays each having at least a front storage location and a rear storage location and which is adapted to receive at least two loads with the first-received load being movable between the locations. Each bay comprises an open front end through which the loads can be inserted and removed, a support surface for supporting a load at the front storage location, and first rails disposed above the support surface and extending between the storage locations. Each bay further comprises a trolley for carrying the first-received load. The trolley is supported by the rails and is movable on the rails between the locations so that both loads can be inserted into the bays at the front storage location.

Abstract: Storage racks include bays for accepting three loads of goods from an open front end wherein telescoping upper and lower trolleys move along a track assembly from the front of the bay rearward. The upper and lower trolleys are successively loaded, and they are moved rearward to rear and central locations as each following load is inserted, with a third load of goods being located on the track assembly in front of the two loaded trolleys. The track assembly is inclined downward toward the front of the bay, and catches are associated with the track assembly to prevent return movement of the loaded trolleys to the front of the bay until released.

Abstract: A storage structure includes at least four posts which provide the vertical framework for a rack arrangement. The posts are interconnected in pairs to form end frames and have vertical rows of slots in opposite surfaces. Longitudinally extending channels are connected to the posts by hooks having lower camming edges. After the hooks are received in the slots in the posts, the channels move downward to tighten the connection. The channels are used in matching pairs, and upwardly extending tabs are formed in the lower flange of the outer channel whereas the upper flange is formed with pockets or slots. The inner channel includes downwardly extending tabs in its upper flange, which are received in the slots or pockets of the outer channel, and similar pockets or slots in its lower flange which receive the upwardly extending tabs.

Abstract: An integral locking arrangement adapted for inclusion in different adjustable storage racks. Columns having rows of spaced apertures are interconnected by beams that carry suitable connectors, e.g., transverse lugs which are inserted into appropriate apertures. Downward movement of the lugs creates a camming action that solidifies the connection and aligns an integral locking tab with an aperture. Displacement of the locking tab causes its head to reside in an aperture in the column and prevents upward disengaging movement until the locking tab is withdrawn.