advances in materials composed of metal scaffolding tower

摘要

875,725. Scaffolding. BURTON, J. Feb. 4, 1960 [Feb. 14, 1959], No. 5203/59. Class 20(2) [Also in Group XXV] A scaffold tower of rectangular cross-section is mounted on two parallel horizontal tubes 15 extending beyond the width of the tower, each having two spiggots 16 secured in the lower ends of two corner tubes 13 of the tower and braces 20 extending from the ends of the tubes 15 and clamped to the tubes 13. The braces 20 carry a short tube 21 by means of which they are clamped to the tubes 13 by clamps 23. The tubes 15 are mounted on castors 19, by means of a tube 18 forming part of the brace 20. Specification 747,677 is referred to.