Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1976-08-23
1978-04-11
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172117, 172248, 172417, 172386, 280415R, A01B 6322, B60D 100
Patent
active
040834115
ABSTRACT:
An implement has at least one group of soil working members arranged in a row that extends transverse to the direction of travel. The group of members is carried on an elongated frame portion that is connected to an overlying supporting structure by parallelogram linkages. Fore and aft ground wheels on corresponding arms interconnect the wheels to beams of the structure and the arms for the front wheels form part of further parallelogram structures. A hydraulic piston assembly bridges each rear arm to an upper arm link of a further parallelogram linkage so that the arms can be pivoted and the supporting structure together with the frame portion with soil working members, are raised to a transport position. The wheels can each be adjusted about a vertical axis to support the implement, in part, during operation or entirely during transport. Respective coupling members are attached to the front and the side of the implement for towing same in either position. Stops and adjusting devices interconnect the various arms and linkages to limit and adjust the position of the frame portion and supporting structure with respect to the arms.
REFERENCES:
patent: 3240005 (1966-03-01), Rowse
patent: 3633679 (1972-01-01), Dahlberg
patent: 3705560 (1972-12-01), Lappin
patent: 3885633 (1975-05-01), Lely
C. van der Lely N.V.
Johnson Richard J.
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