| 摘要 |
A clamp for duplicating machines for lock keys comprising a pair of jaws (1,1',2,2') which are mounted on a threaded pin (4) rigid with a clamp support carriage (3), means for approaching said two jaws (1,1+40, 2,2') when clamping the key, and elastic means (8,6) interposed between said two jaws (1,1', 2,2') to keep them spaced apart. The clamp comprises, in a position misaligned with the line of action of the applied clamping force and at the opposite side with repect to the gripping faces of the jaws (1,1+40, 2,2'), a projecting portion causing, during the clamping stage, a moment opposite to the reaction moment caused by the clamped key. |
