Shortening claw for fitting to oval link chain has paired hook members at each end connected by hinge pins to central connecting link

摘要

A chain link fits in the gap between two claws (5,7) at each end. The ends of the claws engage the adjacent link at right-angles to the link in the gap. The claws swivel on the ends (4,6) of a central link portion (8). They swivel on pins (23). The chain shortening assembly (1) incorporates a locking mechanism (33) with a return spring (37).