Traversing hoists – Overhead – Cable
Patent
1976-08-20
1978-07-11
Oresky, Lawrence J.
Traversing hoists
Overhead
Cable
212 59R, B66C 2302
Patent
active
040996280
ABSTRACT:
A towing vehicle which has a frame and a drive train for propulsion of the vehicle along a roadway and which includes a turntable mounted on the frame for rotation about a vertical axis, a boom assembly fixedly attached to the turntable, a telescoping boom mounted on the boom assembly, and a cable winch mounted on the boom assembly and cooperating with pulleys such that the towing cable passes along the underside of the telescoping boom, around a pulley, and upwardly to the winch. The boom assembly is adjustable about a horizontal axis by an assembly which includes a carriage and a slider cooperating with a support cable to adjustably preselect the angular position of the pivotal boom assembly with respect to the turntable. The drive mechanisms for the turntable, the telescoping boom, and the winch are electrically operated independent of the vehicle drive train and are controlled by a control box electrically coupled to the drive motors by a cable connected to the vehicle by means of a self-winding cable reel. A second set of controls is provided in the cab of the vehicle, and limit switches cooperate with the turntable to preclude overtravel.
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patent: 625643 (1899-05-01), Coffin
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patent: 2700481 (1955-01-01), Donatelli
patent: 3326391 (1967-06-01), Adolfsson
patent: 3335880 (1967-08-01), Ortiz
patent: 3355040 (1967-11-01), Guttridge
patent: 3888368 (1975-06-01), Hawkins
patent: 3961713 (1976-06-01), Stine
Oresky Lawrence J.
Richardson Industries, Inc.
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