Control for a tractor power lift mechanism

Details Control for a tractor power lift mechanism Control for a tractor power lift mechanism

1976-02-09

1978-04-18

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

A01B 63112

Patent

active

040846415

ABSTRACT:
Adjustable mixed automatic height and draft control apparatus for a tractor power lift mechanism includes a height control rocker actuated by the tractor's rockshaft, a draft control rocker actuated by the tractor's hitch linkage, and a first balance lever moveable relative to either one of the rockers by movement of the other. A control linkage has its point of connection to the first balance lever variable by a first hand lever to adjust the mixture of height and draft control, a second hand lever gives over-riding manual control of the power lift mechanism, and a second balance lever is moveable relative to either one of the control linkage and the other hand lever by movement of the second. The second balance lever actuates the control valve of the power lift mechanism.

REFERENCES:
patent: 2864295 (1958-12-01), Du Shane
patent: 2921638 (1960-01-01), Du Shane
patent: 3315751 (1967-04-01), Hull et al.
patent: 3422906 (1969-01-01), Bunting et al.
patent: 3456736 (1969-07-01), Hull et al.
patent: 3674095 (1972-07-01), Roger
patent: 3917002 (1975-11-01), Mueller, Jr.

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