Weight transfer linkage arrangement

Details Weight transfer linkage arrangement Weight transfer linkage arrangement

1988-06-10

1989-08-22

Johnson, Richard J.

Earth working

Mast type hitch

With auxiliary vertical adjustment

172439, 172677, A01B 6311, A01B 5900

Patent

active

048586986

ABSTRACT:
A weight transfer linkage arrangement for connection between the three-point hitch of a tractor, a tool bar carrying agricultural implements and a hitch. The linkage arrangement includes a first parallel linkage connecting the tool bar and the hitch and a second parallel linkage connecting the three-point hitch of the tractor and the tool bar. The first and second linkages are both adaptable to be moved between corresponding cooperative lowered and raised positions, such that the tool bar may be raised and lowered without raising and lowering the hitch. Force applying means are connected to the first linkage to apply downpressure on the tool bar when the linkage arrangement is in a lowered position.

REFERENCES:
patent: 3218999 (1965-11-01), Pattison
patent: 3295482 (1967-01-01), Dountas et al.
patent: 3358777 (1967-12-01), Groenke
patent: 3378279 (1968-04-01), Jacobs
patent: 4116283 (1978-09-01), Blessent
patent: 4236613 (1980-12-01), van der Lely
patent: 4660652 (1987-04-01), Moos et al.
patent: 4677922 (1987-07-01), Shrull et al.

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