Farming implement with wheel depth control

Details Farming implement with wheel depth control Farming implement with wheel depth control

1985-08-15

1987-04-07

Stouffer, Richard T.

Earth working

With ground support vertically adjustable relative to frame

Actuator and interconnected means for adjusting wheels on...

172413, 172417, 280 4313, 280 4323, A01B 6322

Patent

active

046552960

ABSTRACT:
A farming implement is disclosed having a series of wheel subassemblies supporting a towed frame. Each subassembly has a front wheel, preferably a castor wheel, and a rear wheel arrangement. According to the invention, the rear wheel arrangement is secured to a trailing arm which is connected by a connecting rod with a front arm. The connecting rod, the pivot point of the rear and the front arms and the point at which the rear and the front wheels are secured to the respective arms form, in the preferred embodiment, identical right-angled triangles. The rear arm is operatively associated with a hydraulic cylinder for raising or lifting the trailing arm as the need arises. The movement of the trailing arm is transmitted through the linkage to the front wheel whereby the frame of the implement is maintained at a generally horizontal position at all times. The front and rear arms holding the respective wheels are interconnected with a connecting rod the length of which is selectively adjustable to compensate for any deviations from the horizontal level in the front-back direction. The compensation in the sideways direction is taken care of by an adjustable mount of the hydraulic cylinders actuating the respective trailing arms.

REFERENCES:
patent: 2682153 (1954-06-01), Fink, Sr.
patent: 2828680 (1955-05-01), Johnson
patent: 3091476 (1963-05-01), Blake
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patent: 3487882 (1967-11-01), Burton
patent: 3539197 (1970-11-01), Remaud et al.
patent: 3777823 (1973-12-01), Holfeld
patent: 3870107 (1975-03-01), Orthman
patent: 4083411 (1978-04-01), van der Lely
patent: 4139065 (1979-02-01), Lewison
patent: 4317489 (1982-03-01), Steinbach
patent: 4387772 (1983-06-01), Bourgault

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