Earth working – Driven from or guided by stationary object – or anchored – Dragline scraper
Patent
1982-06-21
1984-08-07
Stouffer, Richard T.
Earth working
Driven from or guided by stationary object, or anchored
Dragline scraper
172679, A01B 6906
Patent
active
044638116
ABSTRACT:
A guidance system for use with tractor-mounted row crop cultivators and similar implements includes a pair of independent furrow followers mounted one behind the other on the implement for sensing implement position relative to a preestablished guidance furrow. Series-connected switches are controlled by furrow sensor arms to activate a solenoid valve-controlled hydraulic cylinder on a laterally movable parallel linkage hitch which replaces the standard three-point hitch on the implement. When the implement is raised from the ground, V-shaped stops under the sensor arms automatically position the sensors at the null point. Switches and an actuator on the hydraulic cylinder operate in response to movement of the tractor rockshaft to return the implement to center position in preparation for alignment with the next set of rows to be cultivated.
REFERENCES:
patent: 3208535 (1965-09-01), Fischer
patent: 3603405 (1971-09-01), Arnold et al.
patent: 3797602 (1974-03-01), Sumida
patent: 4060254 (1977-11-01), Ernst
patent: 4136508 (1979-01-01), Coleman et al.
patent: 4161143 (1979-07-01), Fasse et al.
patent: 4180133 (1979-12-01), Collogan et al.
patent: 4184551 (1980-01-01), Orthman
patent: 4228860 (1980-10-01), Orthman
Deere & Company
Stouffer Richard T.
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