Abstract: A free-standing, prefabricated, knock down, readily assembled and disassembled, relocatable vertical wall or space divider. Such wall dividers are useful for partitioning buildings and/or office complexes. The wall is made up of a plurality of individualized and decorative flush panel units which are interchangeable and which are adapted to be readily inserted within quadrilateral openings delineated by a novel wall frame and locked into place by hidden spline members that are mounted in the wall frame for translatory movement. The wall frame is fabricated in a novel assemblage of unique components which can present either a metallic or wooden exterior finish surface. The configuration of the wall frame components provides for lateral walls to extend outwardly not only at modular locations but also from any other desired location by use of novel adapters. The panels may be removed, redecorated and replaced as needed. Shelving or other appurtenances are attachable to the hidden spline members.

Abstract: An apparatus is provided for preventing buckling of a narrow member which is subjected to a compression load. The apparatus comprises a rigid bar of substantially the same length as the narrow member, having angularly disposed legs adapted to contact the narrow member along its length, with means for maintaining the narrow member in contact with the rigid bar.

Abstract: A shelf and corner post combination wherein the shelf is adjustable into any of a variety of selected elevations. Each of the posts is preferably cylindrical and is provided with a series of vertically-spaced indentations along at least one side thereof. The shelf includes a perimetric frame having adjacent side frame members which merge to define a corner section having an inside contour corresponding with that of the post. Each corner section has at least one inwardly-projecting horizontal rib adapted to seat in any selected indentation of the post. Different means are disclosed for drawing the rib into a selected indentation and for locking the parts in interfitting relationship.

Abstract: A differentially threaded bolting arrangement for bolting two machine parts together includes one or more bolts the opposite ends of which are provided with threaded sections differing in pitch, a threaded hole in one of the machine parts into which the bolt end with the greater pitch is threaded, a bore through which the bolt passes and an adjacent hollow area in the other machine part in alignment with the threaded hole, and a nut having a cylindric configuration located in the hollow area and which is movable axially but is restrained against rotation. The bolt end having the smaller pitch is threaded through the nut and as the bolt is rotated, the nut is thus caused to move axially into a forced contact with the lower end of the hollow area accompanied by a drawing together of the two machine parts.

Abstract: A multi-purpose, extruded metal, joist-like structural member which is designed for use in connection with concrete formwork, the member being generally of I-beam configuration and having associated therewith novel facilities whereby it may be clamped to various types of support members either in the form of lengths of channel members or lengths of I-beams to the end that it assumes a proper operative position within a concrete wall or slab form installation.

Abstract: A table leg supporting structure is formed by a pair of metallic side rail flange members mounted at right angles to each other on the underside of a table top and abutting each other to form a corner therebetween. A hollow tubular leg has a ninety degree sector of its sidewall removed in proximity to its upper end, and a ninety degree angle member welded therein. A machine screw passed through a hole drilled in the corner junction of the paired flange members is threaded into the angle member within the tubular leg. The foregoing abstract is not to be taken either as a complete exposition or as a limitation of the present invention, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be had to the following detailed description and the accompanying drawings as well as to the claims.

Abstract: A building structural system having a plurality of preformed elongate structural elements each with a plurality of angularly-related planar surfaces and provided with integral fastener-receiving and locking devices and a plurality of connecting members for interconnecting said elongate elements in a desired angular relation and securing the elements with the addition of strength to the structural system.