Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Load releasing means
Patent
1983-10-24
1985-09-10
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Load releasing means
24241PS, 114252, 294 8227, 294 823, B63B 2160, B66C 134
Patent
active
045402108
ABSTRACT:
An improved cable release mechanism for mounting on the deck of a towboat, tug and other applications and receiving one end of a tow cable to secure and selectively release a barge or system of barges, which mechanism includes a pelican hook pivotally mounted on a base which is secured to the deck of the towboat in closed, towing configuration by means of a keeper ring normally engaging and securing the pelican hook. Release of the tow cable from the pelican hook is automatically achieved by activating an air or hydraulic cylinder having a piston in cooperation with the keeper ring, to extend the cylinder piston and force the keeper ring from engagement with the pelican hook, allowing the pelican hook to pivot rearwardly responsive to the load on the tow cable. In a preferred embodiment the keeper ring releasably cooperates with the air or hydraulic cylinder piston by means of a spring and a keeper ring bolt and a ring nut is provided in cooperation with the keeper ring bolt to facilitate manual release of the keeper ring from the pelican hook in the event of malfunction of the cylinder. In a most preferred embodiment, the cable release mechanism is provided with a cover and is coupled to a loop in one end of the towing cable and the cable is looped around the towboat and barge deck fittings and back to a winch located on the towboat, in order to provide a desired degree of tension in the tow cable and for adjustment of the distance between the barge or barges and the towboat.
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Cherry Johnny D.
Harrison John M.
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