Mooring and towing hook - is locked in position by flat on pin and pear-shaped body acting against arm on hook

摘要

The hook pivots on an axis in a frame, and has one or more locking devices securing the hook in the towing position, in which an arm on the hook bears against the locking device, which is in the form of a pin with a flat forming the locking face. next to this portion of the pin (14) and partly enclosing the flat is a pear-shaped body (15), working in conjunction with the end (10) of the locking arm (9) on the hook so as to move the pin back into the locking position. The pin also has a locking disc (11) concentric to it and with one or more notches (16, 18) for a locking catch (19) spring-loaded against it. In the frame is a restrictor plate working in conjunction with a mating surface on the pin in the released position.