Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1980-08-11
1982-12-14
Stouffer, Richard T.
Geometrical instruments
Straight-line light ray type
Structurally installed
33185V, 172430, B62D 1502
Patent
active
043631746
ABSTRACT:
A gravity-actuated guide for row crops which mounts on a tractor front axle to enable the operator to compensate for changes in transverse slope by steering the tractor and thereby correctly position cultivating equipment behind the tractor in relation to the rows.
REFERENCES:
patent: 567539 (1896-09-01), Francisco
patent: 716725 (1902-12-01), Lee
patent: 1319249 (1919-10-01), Rummer
patent: 1373852 (1921-04-01), Allen
patent: 2555954 (1951-06-01), Bruflat
patent: 2929457 (1960-03-01), Langerak
patent: 3104476 (1963-09-01), Hayes
patent: 4184551 (1980-01-01), Orthman
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