Abstract: An assembly rack comprises a plurality of upright posts and lateral joining rods coupled together by a plurality of structural connectors. The posts and rods comprise L-shaped members which define longitudinal guide edges. Each connector comprises arms which fit respectively into the post and at least one of the lateral rods. The arms contain slots which receive the guide edges of the post and rod(s). Each arm carries a friction block which is actuated by a threaded bolt so as to be displaced away from the arm and into frictional contact with an inner surface of the respective post and rod(s). Thus, the arms become frictionally locked between the inner surface and guide edges of the respective post and rod(s).

Abstract: An assembly rack having: a plurality of steel angles each having its two sides bent into L-shaped guide edges which define a guide groove, and provided with a series of holes in each side, and a plurality of slightly L-shaped joint members of sheet metal having a guide groove on each side and provided with screw holes one in each side of the guide groove. The guide edges of the steel angles are engaged in the grooves of the joint members and the two extended portions of the joint members are fitted into the guide grooves of the angles. Vertical and horizontal steel angles thus joined by the joint members are fastened to the joint members by bolts, and the horizontal angles can be positioned at different locations along the vertical steel angles.