Earth working – Driven from or guided by stationary object – or anchored – Dragline scraper
Patent
1990-03-01
1991-09-03
Taylor, Dennis L.
Earth working
Driven from or guided by stationary object, or anchored
Dragline scraper
172285, 172288, 172310, 172385, A01B 7300
Patent
active
050444476
ABSTRACT:
A guide and control device for an agricultural machine subjected in operation to a high lateral thrust in relation to its direction of traction, such as a disk-type stubble-plough includes a guide and control system having at the front, a set of freely oscillating twin wheels the orientation of which for a change from a road-travel position to a soil-working position is controlled from a bar for coupling to a tractor. A carrying wheel is arranged in a central part of the frame, and at the rear thereof are arranged freely oscillating twin carrying wheels and furrow wheels controllable simultaneously from their road-travel position to their working position, and vice versa. The multiplicity of carrying wheels guarantees that sufficient grip with the soil is maintained permanently, thus preventing any lateral slip of the machine during passage over a movable obstacle, this also being assisted by the automatic orientation of the twin wheels by means of their freely oscillating mounting.
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patent: 2998853 (1961-09-01), Martensen
patent: 3677349 (1972-07-01), Gugin
Taylor Dennis L.
Thompson Jeffrey L.
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