Two-speed winch

Details Two-speed winch Two-speed winch

1988-07-22

1990-01-09

Levy, Stuart S.

Implements or apparatus for applying pushing or pulling force

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

Device includes rotatably driven, cable contacting drum

74812, B66D 114

Patent

active

048922919

ABSTRACT:
A manually powered winch has two geared drive trains. Both originate from a simple set of gear teeth (7) formed into the diameter of a drive input shaft (5). The final drive, common to both gear trains, to an internal gear track (18) on the drum (3) of the winch is one part (12) of a two-part gear (8,12). The part (12) is directly borne by a hub (20) on an axle (10) in the winch. Its gear teeth are on the outer face of an annulus (22) on the inner face of which are ratchets (14) of a pawl-and-ratchet unidirectional drive (14,16) between the two parts (8,12). The other part (8) of the two-part gear is preferably borne not directly on the axle (10) but on the hub (20) of the part (12).

REFERENCES:
patent: 940638 (1909-11-01), Hintze
patent: 2836085 (1958-05-01), Snyder
patent: 3712155 (1973-01-01), Stommel et al.
patent: 3973755 (1976-08-01), Fawcett
patent: 4227680 (1980-10-01), Hrescak
patent: 4341372 (1982-07-01), Sugioka
patent: 4463932 (1984-08-01), Shuker

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