Agricultural implement and depth control therefor

Details Agricultural implement and depth control therefor Agricultural implement and depth control therefor

1981-01-29

1982-10-26

Stouffer, Richard T.

Earth working

Automatic power control

Land leveller type

A01B 63114

Patent

active

043556884

ABSTRACT:
A depth control system for a disk tiller or similar groundworking implement having a gang of tillage tools adjustably supported from a main frame. A trailing support arm is rigidly connected to the gang and pivotally carries a gauge wheel spring-biased into engagement with the tilled soil. As the depth of the tools varies with changing conditions, the support arm moves and the gauge wheel pivots with respect to the arm to rotate a first lever. The first lever is operably connected to a second lever by a pair of pretensioned springs. Movement of the second lever moves a switch activating arm which activates one of a pair of microswitches. The microswitches control solenoid valves to operate a depth control cylinder for the gang and maintain the desired depth of cut. The switch activating arm is dampened by a dashpot which, together with the springs, prevents switch activation during short periods of oscillation.

REFERENCES:
patent: 2755721 (1956-07-01), Rusconi
patent: 2830518 (1958-04-01), Kassel
patent: 3658133 (1972-04-01), Sweet et al.
patent: 4176721 (1979-12-01), Poggemiller et al.
patent: 4228860 (1980-10-01), Orthman

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