Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1977-01-21
1978-07-04
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172103, 172125, A01B 3308
Patent
active
040983455
ABSTRACT:
A cultivator implement has an elongated central frame portion that supports a row of rotatable soil working members and a gear box with an imput connectable to a p.t.o. The gear box houses a driving shaft that extends horizontally transverse to the direction of travel and parallel to the frame portion. The driving shaft has a first pinion at one end that is engaged by the imput and a second smaller pinion is journalled in the side wall opposite the first pinion. The second pinion has an outer socket and a bore that receives the driving shaft. The outer end of the driving shaft has a socket that interconnects with the pinion's outer socket through lugs bolted together by a breakable bolt. The second pinion directly engages a third pinion that is on a shaft of one of the soil working members to drive same. If one of the soil working members jams, the bolt breaks and the driving shaft rotates relative to the second pinion. In one arrangement, the driving shaft extends through the gear box sides to respective transmission shafts geared to second and third groups of soil working members at each lateral side of the central frame portion. Respective gear boxes on the latter groups also can have overload release mechanisms.
REFERENCES:
patent: 2940534 (1960-06-01), Chattin
patent: 3028919 (1962-04-01), Smith
patent: 3885633 (1975-05-01), Lely et al.
patent: 3971445 (1976-07-01), Lely
C. van der Lely N.V.
Johnson Richard J.
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