Metal framework for shelving - has channelled uprights and cross bars with tongues fitting into elongate holes in uprights

摘要

The metal framework is mainly for shelving and has uprights (1), with a series of oblong holes (4) at regular intervals, and cross bars (2) which hook on to the uprights. Each cross bar is cut out in one piece and has an angle iron with a vertical upper wing (5) and a horizontal lower wing (6) with a foot at each end. The feet have tongues partly pressed out at the top (9) and bottom (10) with a hole (11) between them. The tongues fit into the holes of the upright and are held in place by a bolt through the hole.