Agricultural implement with common mechanism for raising/lowerin

Details Agricultural implement with common mechanism for raising/lowerin Agricultural implement with common mechanism for raising/lowerin

1993-02-26

1994-09-13

Reese, Randolph A.

Earth working

Plural wheeled implements

Outrigged implement adjustable inwardly

280412, 111 57, 172457, 172458, 172477, A01B 4900, A01B 6332

Patent

active

053460197

ABSTRACT:
An agricultural implement, such as a row crop planter, has a main carrier frame drawn by a tractor and including support wheels. Individual row units are mounted on a lift frame. The carrier frame includes a cornered lift post which is mounted for rotation about a vertical axis. A cornered sleeve or collar in the form of a tube is mounted to the lift frame for vertical sliding motion on the lift post. A lift hydraulic cylinder couples the lift frame to the carrier frame for setting the lift frame in (i) a use position wherein the row units are lowered to engage the soil; (ii) an intermediate, raised position wherein the row units are disengaged, for negotiating end turns; or (iii) a fully raised position wherein the lift frame and row units may be rotated from a transverse position to a longitudinal position, to narrow the implement for road travel. A swing hydraulic cylinder is arranged to rotate the lift post when the lift frame is raised to the uppermost position, to torque the lift frame to a longitudinal position for transport.

REFERENCES:
patent: 3356301 (1967-12-01), Barber et al.
patent: 4117893 (1978-10-01), Kinzenbaw
patent: 4506904 (1985-03-01), Kinzenbaw
patent: 4721168 (1988-01-01), Kinzenbaw
patent: 4932197 (1990-06-01), Allen
patent: 5129463 (1992-07-01), Handy

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