Drawworks

Details Drawworks Drawworks

1982-01-07

1984-03-27

Petrakes, John

Implements or apparatus for applying pushing or pulling force

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

Device includes rotatably driven, cable contacting drum

254358, 254377, 254378, B66D 114, B66D 120, B66D 126, B66D 500

Patent

active

044389043

ABSTRACT:
Drawworks, having a single outboard brake on the drum shaft at the driller side of the drawworks instead of the pair of brakes conventionally provided at the drum ends, whereby the brake is more readily accessible for service and repairs than are the brakes of conventional apparatuses.

REFERENCES:
patent: 1179612 (1916-04-01), Clarkson
patent: 2505088 (1950-04-01), Athy
patent: 2602635 (1952-07-01), Young
patent: 2678190 (1954-05-01), Crake
patent: 2703161 (1955-03-01), Keim et al.
patent: 2775429 (1956-12-01), Ashton
patent: 3033528 (1962-05-01), Wilson

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