Slack cable sensing apparatus

Details Slack cable sensing apparatus Slack cable sensing apparatus

1979-10-04

1981-12-15

Jillions, John M.

Traversing hoists

Having horizontally swinging boom or bridge

Having fluid ram directly actuating load cable or sheave...

212220, 254273, B66C 1310, B66D 154

Patent

active

043055133

ABSTRACT:
An apparatus is described for detecting a slack cable condition on material handling carriers, hoisting equipment and the like. The device is mounted adjacent the winch drum and is designed for disabling the operation of the winch when the load comes to rest and the cable slackens. When a load is being supported by the cable and the cable is taut, an interface portion of the sensing apparatus is biased to a first position. However, when the load comes to rest and the cable slackens, a bias spring functions to position the interface portion of the sensor to a second position and to preclude further operation of the winch and prevent undesirable cable unwinding.

REFERENCES:
patent: 1848972 (1932-03-01), Peebles
patent: 1990241 (1935-02-01), Mizer
patent: 2720093 (1955-10-01), Lambach et al.
patent: 3329284 (1967-07-01), Bogart et al.
patent: 3780989 (1973-12-01), Peterson
patent: 3805967 (1974-04-01), Scannell

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