| 摘要 |
1,210,124. Jointing by stamping; making electrical connections; punching. CCL SYSTEMS Ltd. 31 Jan., 1969 [14 Feb., 1968], No. 7249/68. Heading B3A, B3Q and B3W. Apparatus for attaching a metal fitting to an electrical conductor or other cable comprises three spaced indenting or piercing elements 21, 27, power-operated means 17 for moving the element 21, and further power-operated means 18 for moving the other elements 27. As shown, the apparatus has two pivoted crimping jaws 27, Fig. 2, and a central jaw 21 which is operated, against a return spring 20, by a piston 17. The pivoted jaws 27 are operated by pistons 18 and returned by springs 24. A cam 31, operated by a screw 28 and engaging followers 33 mounted on the jaws 27, may close the jaws 27 ahead of the pistons 18 to hold a fitting before crimping. The apparatus may have an insulating cover 34, and an hydraulic circuit for supplying the pistons may include a pressure relief valve. In a modification, Fig. 6, a single piston 41 operates both pivoted jaws 46 through toggle links 47. The piston 41 may be moved to obtain an initial grip by turning a knurled nut 50 engaging the screw-threaded pistonrod 49. |
