Earth working – Plural relatively movable tools – Relatively movable because of operation
Patent
1980-01-02
1982-02-23
Stouffer, Richard T.
Earth working
Plural relatively movable tools
Relatively movable because of operation
172271, 172311, 172696, 172743, A01B 1500
Patent
active
043165109
ABSTRACT:
A soil cultivating machine has a beamed frame, and working members arranged in pairs. Two working members are mounted one behind the other, preferably on a common carrier beam which is releasably secured to transverse beams of the frame. Thus the two working members and the carrier beam constitute a working unit which is readily releasable from the frame. The two working members of the pair are interlinked by a connecting rod to ensure a uniform operating depth over irregular ground and the members can be located on opposite sides of the carrier beam as viewed in plan. In one embodiment, the working members are mounted on pivot pins journalled to different frame beams and the members are arranged in rows that are inclined to the direction of travel. The beams with working members can be arranged in groups that are hinged to one another for elevation to a reduced transport position. A wheeled central frame portion has an intermediate frame portion and an outer frame portion to each side which are linked to a respective swingable arm. The arm can be turned by a hydraulic ram so that, first, the outer portion is raised and then the intermediate portion is elevated above the central portion.
REFERENCES:
patent: 1867521 (1932-07-01), Mote
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patent: 3502156 (1970-03-01), Sherman
patent: 3921726 (1975-11-01), Connor et al.
patent: 4050522 (1977-09-01), Ralston et al.
patent: 4147305 (1979-04-01), Hunt
patent: 4167978 (1979-09-01), Kirchner
patent: 4204579 (1980-05-01), Rau et al.
Mason William B.
Stouffer Richard T.
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