Device for effecting translational movement of a machine

Details Device for effecting translational movement of a machine Device for effecting translational movement of a machine

1975-04-01

1976-11-09

Schwadron, Martin P.

Motors: expansible chamber type

Relatively movable working members with one having motive...

Single valve unit controlling plural working chambers

61 45D, 91191, 91280, 91353, 91413, 91461, F01L 1518

Patent

active

039903494

ABSTRACT:
A hauling device, for example for a mining machine, has two clamping elements which grip on ramps each of which elements is attached to an operating rod of a hauling jack. The jacks are operated alternately, in conjunction with the clamping elements to advance or retract the machine, and the hauling jacks are hydraulically interconnected in a manner to avoid hunting.

REFERENCES:
patent: 2112466 (1938-03-01), Maloon
patent: 2833556 (1958-05-01), Kling
patent: 3348624 (1967-10-01), Just
patent: 3476016 (1969-11-01), Dixon
patent: 3499466 (1970-03-01), Chirco
patent: 3564842 (1971-02-01), Van Marle
patent: 3620014 (1971-11-01), Klein
patent: 3672159 (1972-06-01), Sundin
patent: 3724333 (1973-04-01), Fonden
patent: 3815472 (1974-06-01), Schante

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