Earth working – Driven from or guided by stationary object – or anchored – Dragline scraper
Patent
1985-04-24
1987-02-03
Stouffer, Richard T.
Earth working
Driven from or guided by stationary object, or anchored
Dragline scraper
1042441, 180131, A01B 6906
Patent
active
046403655
ABSTRACT:
A row following guidance device connecting the right and left ends of the forward portion of a row crop implement to a tractor will adjust the length of each left and right connection as the tractor deviates laterally from alignment with the crop rows to correctively guide the implement in alignment with the crop rows. A row following wheel signals a steering valve upon any lateral deviation of the implement from crop row alignment, the steering valve correcting the deviation by lengthening one connection between the tractor and the implement and shortening the other. The row following wheel is mounted for movement independent of the implement so that the implement may be raised or lowered without affecting the operation of the wheel.
REFERENCES:
patent: 1111243 (1914-09-01), Whitworth
patent: 3537531 (1970-11-01), Fischer et al.
patent: 3797602 (1974-03-01), Sumida
patent: 3998275 (1976-12-01), Eisenhardt
patent: 4180133 (1979-12-01), Collogan et al.
patent: 4184551 (1980-01-01), Orthman
patent: 4228860 (1980-10-01), Orthman
patent: 4463811 (1984-08-01), Winter
Newman E. Robert
Stouffer Richard T.
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