Pulley assembly for improving the cooperation between a winch an

Details Pulley assembly for improving the cooperation between a winch an Pulley assembly for improving the cooperation between a winch an

1979-08-13

1981-10-13

Jillions, John M.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254287, 254333, B66D 174

Patent

active

042944295

ABSTRACT:
In this cable hoisting apparatus at least two pulleys disposed in a common plane have in the one a semi-circular-sectioned groove and in the other a V-shaped groove section, the first pulley receiving the load and the other pulley being responsive to the tightening mechanism controlled by the load. Thus, the pulley having a semi-circular sectioned groove will not damage the cable and the cable is retained therein by adherence, thus reducing as much the load exerted on the cable section engaging the second pulley, whereby a lesser retaining effort is exerted on this second pulley; when a pressure mechanism is provided for tensioning the cable in proportion to the load, said mechanism is associated with the pulley having the V-shaped groove.

REFERENCES:
patent: 3118635 (1964-01-01), Landsem
patent: 3666239 (1972-05-01), Koshihara
patent: 3944185 (1976-03-01), Evans
patent: 3949969 (1976-04-01), Kaufer

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