| 摘要 |
1,046,861. Scaffolding; clamps. ACROW (ENGINEERS) Ltd. Jan. 14, 1964 [Jan. 17, 1963], No. 2172/63. Headings E1S and E2B. Scaffolding comprises uprights 2 connected to horizontal frames 6 by clamps 12 adjustable along the uprights, blocks being welded to the uprights to locate the clamps. Each frame consists of two longitudinal members connected by crossbars 14 and having hooks at the ends for engaging in sockets 28, Fig. 4, on the clamps. Each upright consists of sections connected by sockets 32. The clamp 12 comprises a pivoted jaw 20 and a pivoted bolt 22. |
