Mechanical cable disconnect device

Details Mechanical cable disconnect device Mechanical cable disconnect device

1980-01-23

1981-04-28

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

B66C 138

Patent

active

042640989

ABSTRACT:
A mechanical device is provided for disconnecting a load lowered to the ground from the end of a cable in response to engagement of the load with the ground. The device comprises a clevis secured to the end of the cable and provided with a spring-biased pin holding an eye member in turn attached to the load. The weight of the load will hold the pin in the clevis, but when the load engages the ground, the weight of the pin is relieved and the spring will pop the pin out. A slidable member normally blocks outward movement of the pin. A weight releasable from the upper end of the cable is arranged to slide down the cable and strike the slidable member to move it to a position in which the pin is unblocked thereby arming the device for releasing of the load when the load engages the ground.

REFERENCES:
patent: 2368671 (1945-02-01), Lombard
patent: 2732246 (1956-01-01), Bernhart
patent: 2842392 (1958-07-01), Haake
patent: 2886368 (1959-05-01), Spratt
patent: 3066970 (1962-12-01), Haake

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