Winch mechanism for crane

Details Winch mechanism for crane Winch mechanism for crane

1977-12-05

1980-05-27

Noland, Kenneth W.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

254184, 212 49, B66D 176

Patent

active

042046645

ABSTRACT:
A winch mechanism includes a first and a second drum each having multiple grooves therein. A frame supports the first drum spaced from the second drum with the axis of rotation of the first drum canted relative to the rotational axis of the second drum such that the grooves at the top of the first drum are substantially aligned with corresponding grooves at the top of the second drum and the grooves at the bottom of the first drum are substantially aligned with grooves adjacent to the corresponding grooves at the bottom of the second drum. A cable is alternately wrapped between the grooves of the first and second drums with at least one of the drums being driven to draw in and feed out the cable.

REFERENCES:
patent: 1245186 (1917-11-01), Brothers
patent: 1440600 (1923-01-01), Holley
patent: 2998094 (1961-08-01), Fisher
patent: 3020022 (1962-02-01), Turnquist
patent: 3467360 (1969-09-01), Mizell
patent: 3966170 (1976-06-01), McKenna

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