Pressure and depth control in agricultural implement

Details Pressure and depth control in agricultural implement Pressure and depth control in agricultural implement

1992-02-21

1993-08-10

Corbin, David H.

Earth working

With ground support vertically adjustable relative to frame

Power operated adjustment

1722605, 172407, 172 4, 172423, A01B 6322

Patent

active

052340600

ABSTRACT:
A soil contacting implement and depth gauging wheel at a predetermined vertical distance from the implement are provided for attachment to a tractor. Upward or downward movement of the wheel on the soil causes a deviation from the predetermined vertical displacement thereby triggering an adjustment to the downward force on the implement so as to reestablish the predetermined displacement. The magnitude of the predetermined displacement manually may be altered. In addition, the downward force of the wheel manually is adjustable without altering the magnitude of the predetermined displacement.

REFERENCES:
patent: 3561541 (1971-02-01), Woelfel
patent: 3878901 (1975-04-01), Robertson, Sr.
patent: 4031966 (1977-06-01), Farrell
patent: 4275670 (1981-06-01), Dreyer
patent: 4300640 (1981-11-01), Baxter et al.
patent: 4306732 (1981-12-01), Pettibone
patent: 4423788 (1984-01-01), Robinson, Jr. et al.
patent: 4909331 (1990-03-01), Defranco
patent: 4913070 (1990-04-01), Morrison, Jr.

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