Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1976-06-02
1978-01-31
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172117, 172657, A01B 3306
Patent
active
040710890
ABSTRACT:
A cultivator has an elongated beamed frame and a plurality of soil working groups pivoted to a forward beam by at least one parallelogram linkage. The groups are pivoted to turn about pivot connections, that define horizontal axes that extend transverse to the direction of travel, responsive to ground undulations. Driving connection to each group is obtained through gear boxes mounted along a support that extends transverse to the direction of travel, between forward and rearward beams of the frame and each group is rotated about an axis defined by an upwardly extending shaft that is engaged by a transverse driving shaft housed in the support. The support can also be formed by elongated frame portions that are mounted side-by-side with driving shafts mounted on the tops of the frame portions. A tool bar with seeders can be attached to the rear beam through linkages and a supporting roller can be adjustably connected to the frame immediately to the rear of the soil working members to regulate their working depths. Each group includes a tube arm with tined soil working members mounted at the ends of the arm so as to be freely rotatable responsive to contact with the ground.
REFERENCES:
patent: 1890537 (1932-12-01), Frank
patent: 3115190 (1963-12-01), Listiak
patent: 3667551 (1972-06-01), Lely
patent: 3885633 (1975-05-01), Lely
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