Abstract: A support tube for use with a support tube surface area assembly such as a shelf, a portion of a furniture article, or other structure, comprises a first end, a body section, and a second end. The first end and second end of the support tube are outwardly flared to provide a tapered interior area into which a first and a second accessory element, such as a nut and bolt, may be inserted. The accessory elements are enclosed in the tapered interior area by a crimping and flattening of the lips of the first and second end such that they form an interiorly extending flange partially encapturing the accessory elements. A method for making the support tube is disclosed as well a shelf structure or furniture article assembled with the support tube.

Abstract: An adjustable shelf support assembly comprises a first side body, a second side body, a support member extending between and secured to the side bodies, and a shelf. The shelf has a pair of support brackets attached to its underside surface. The support brackets each have a pair of aligned openings, each opening defining an open vertical channel adjacent a plurality of downwardly extending fingers and a plurality of seating apertures neighboring said downwardly extending fingers. The support brackets are capable of a selective and removable mounting of the seating apertures upon the support member to thereby adjust the vertical setting of the shelf or to tilt the shelf.

Abstract: A locking device for interlocking drawers in a file cabinet includes an elongated L-shaped locking member pivoted adjacent to an interior corner of the cabinet and cooperating with a fixed arm on each of the cabinet drawers so that withdrawal of any drawer pivots the L-shaped member to prevent the withdrawal of any other drawer.