Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1978-11-16
1981-10-20
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
212 76, B66D 126
Patent
active
042956366
ABSTRACT:
A cable hauling system includes a drive shaft, a haulback shaft with a haulback drum mounted thereon, and a main shaft with a main drum mounted thereon. A first pair of gears operatively associated with the drive shaft and the main shaft includes a positively acting clutch for selectively coupling the drive shaft to the main shaft in driving relationship through the first pair of gears. Second and third pairs of gears are operatively associated with the drive shaft and the haulback shaft. An energy-dissipating, power transfer device is associated with both the second and third pairs of gears to selectively couple one or the other of the second and third pairs of gears in driving relationship with the haulback shaft. The gear ratios of the second and third pairs of gears are chosen and the power transfer device is operable to allow relative restrained movement between the drive shaft and the haulback shaft so that the line speed to and from the haulback drum can be equalized with the line speed from and to the main drum.
REFERENCES:
patent: Re18220 (1931-10-01), McGiffert
patent: Re26505 (1968-12-01), Thompson
patent: 1248600 (1917-12-01), Bathrick
patent: 1389324 (1921-08-01), Stevenson
patent: 1559692 (1925-11-01), Gorbutt
patent: 1578709 (1926-03-01), Bjorge
patent: 1826303 (1931-10-01), Dickinson
patent: 3282569 (1966-11-01), Thompson
patent: 3912229 (1975-10-01), Mitchell
Jillions John M.
Washington Logging Equipment, Inc.
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