Earth working – Driven from or guided by stationary object – or anchored – Dragline scraper
Patent
1979-09-04
1981-08-11
Stouffer, Richard T.
Earth working
Driven from or guided by stationary object, or anchored
Dragline scraper
172833, A01B 6900
Patent
active
042829348
ABSTRACT:
A guidance system for agricultural implements having a frame mounted for longitudinal earth traversing movement and limited lateral movement; a transversely inclined blade mounted on the frame having a low side and a high side and adapted to form a correspondingly transversely inclined track in the earth; a plow mounted on the frame adjacent to the low side; a planar guard mounted on the frame adjacent to the high side and disposed in an erect plane substantially aligned with the direction of movement; and a wheel mounted on the frame having an axis substantially parallel to the inclination of the blade and a tread in rolling engagement with the track.
REFERENCES:
patent: D31490 (1899-09-01), Kegans
patent: 761802 (1904-06-01), Wells
patent: 2038936 (1936-04-01), Jacks
patent: 2242486 (1941-05-01), Sutherland
patent: 2759407 (1956-08-01), Kelley
patent: 3797602 (1974-03-01), Sumida
patent: 3840076 (1974-10-01), Capehart
patent: 4033417 (1977-07-01), Rau et al.
patent: 4117889 (1978-10-01), Larson
patent: 4180133 (1979-12-01), Collogan et al.
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