Depth control for an agricultural implement

Details Depth control for an agricultural implement Depth control for an agricultural implement

A - Human Necessities

01

B

111/21

A01B 63/114 (2006.01) A01B 63/32 (2006.01)

Patent

CA 1163868

AGRICULTURAL IMPLEMENT AND DEPTH CONTROL THEREFOR Abstract of the Disclosure A depth control system for a disk tiller or similar ground- working 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.

393362

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