Prefabricated knock-down metal-frame work table

Claim 1

A heavy duty, knock-down, prefabricated, metal-frame work table capable of supporting heavy loads, as for example, stacks of textile fabric laid up in preparation for a cutting operation, which frame can be shipped in disassembled form and easily assembled at a work site, said frame comprising: (a) a plurality of upper and lower end, side, and cross rails, each formed of a square steel tubing member open at the ends and of prescribed length; (b) a plurality of vertical corner leg members formed of square steel tubing, each of said corner leg members further including a square steel tubing projection secured to and extending horizontally from the surface of each of two adjacent walls at a point intermediate the top and bottom thereof, and an open top, one of said projections being inserted into the open end of one of said lower side rails and the other of said projections being inserted into the open end of one of said lower end rails; (c) a plurality of vertical side leg members formed of square steel tubing, each of said side leg members further including square steel tubing projections secured to and extending horizontally from the surface of three adjacent walls thereof at a point intermediate the top and bottom thereof and an open top, the central one of said projections being inserted into the open end of one of said lower cross rails and the other two projections being inserted into the open ends of two of said lower side rails: (d) a plurality of connector members having a body portion formed of square steel tubing, each of said side connector members including square steel tubing projections secured to and extending perpendicularly from the surface of two adjacent walls of the body portion thereof of such length and cross sectional dimension as to be insertable into the open end of one of said leg and rail members; (e) some of said connector members being arranged with the axis of the opening through the tubular body member aligned with the longitudinal axis of the upper side rails of said table, with one of said projections extending downwardly into the open top of a side leg member, and with the other of said projections extending horizontally inwardly into the open end of one of said upper cross rails, a relatively short bridging member formed of square steel tubing of such length and cross-sectional dimension as to be inserted axially through the opening in said tubular body portion and extend longitudinally from each end thereof for insertion into the ends of two adjacent upper side rail members; (f) other of said connector members being arranged with the axis of the opening through the tubular body member aligned with the longitudinal axis of one of said corner leg members, with one of said projections extending horizontally into the open end of one of said upper end rails, with the other of said projections extending horizontally into the open end of one of said upper side rails, and a relatively short bridging member formed of square steel tubing secured to and extending axially in a downwardly direction from the opening in said tubular body portion, said short bridging member being of such length and cross-sectional dimension as to be inserted into the upper end of one of said corner leg members; (g) each of said side rails, cross rails, leg members, projections and short bridging members being provided with a pair of openings in the opposite side walls thereof adjacent the free ends of said rails and the upper end of said leg members for receiving connecting bolts therethrough; (h) a planar top member secured across the top of said frame; (i) whereby said upper and lower side and cross rails are assembled to the projections and short bridging members extending from said side and corner members and bolted together to form said sturdy work table.