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
1983-06-06
1985-04-30
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
254294, 254322, 254376, 242 99, 2421583, 74 68, 182239, 188180, B66D 114, B66D 504
Patent
active
045139520
ABSTRACT:
A drum hoist or winch in which at least one circular cam lobe mounted eccentrically on an axle overlapping the axle is interconnected with a like circular cam lobe mounted on a second axle by inboard linkage whereby rotation of one axle will rotate the other axle in unison. A hoist drum mounted concentrically with at least one of the axles can thus be rotated in unison with the other axle to wind or unwind one or more cables thereon.
A preferred embodiment has three circular cam lobes mounted eccentrically on each axle 120.degree. angularly out of phase with each other with an inboard link plate interconnecting a cam lobe on each axle in rotatable relation.
A brake mechanism mounted on an axle has components normally frictionally engaged which rotate as a unit. Sliding frictional motion to slow down and positively brake the hoist to a stop is provided only when rotary speed of the axle exceeds a predetermined speed.
REFERENCES:
patent: 1097078 (1914-05-01), Box
patent: 2505088 (1950-04-01), Athy
patent: 2546202 (1951-03-01), Trouin
patent: 3069915 (1962-12-01), Sawle
patent: 3332634 (1967-07-01), Somervell et al.
patent: 4199133 (1980-04-01), Gagnon
Delbridge Robert F.
Fors Arne I.
Hail III Joseph J.
Jillions John M.
Swing Stage Limited
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