Earth working – With earth marker
Patent
1982-09-21
1984-05-22
Johnson, Richard J.
Earth working
With earth marker
172456, A01B 1700
Patent
active
044495900
ABSTRACT:
An agricultural row marker assembly is provided which includes a three-piece articulated arm and which is hydraulically actuated. The assembly has a base which is connectable to an agricultural tool bar. A second arm is pivotally mounted to the first arm and a telescopingly extendable third arm is pivotally connected to the second arm. A marker disc is located at the distal end of the third arm. The arm is hydraulically actuated with the hydraulic cylinder acting on the first arm through a link member. A second link runs from the base to the second arm and a cable runs between the second link and the third arm so that extension of the hydraulic cylinders extendable rod urges all three arms in the substantially linear alignment.
REFERENCES:
patent: 1164393 (1915-12-01), Randolph
patent: 3666019 (1972-05-01), Yeske
patent: 4030551 (1977-06-01), Boetto
patent: 4207950 (1980-06-01), Kinzenbaw
patent: 4244428 (1981-01-01), Sloan
patent: 4281720 (1981-08-01), Tusing
patent: 4365672 (1982-12-01), Robinson
9000F Front Folding Planter Bar Advertizing Brochure of Carter Mfg. Co. Inc. Unionville, MD.
Drawn and Integral Planters-Advertizing Brochure of John Deere Moline, Ill. pp. cover 21 and 22.
Fold it Forward with Kelderman Fold Kits Advertizing Brochure of Kelderman Mfg. Inc. Oskaloosa, IA.
9000F Front Folding Planter Bar Advertizing Brochure of Carter Mfg. Co. Unionville, MO.
Johnson Richard J.
Yetter Manufacturing Co.
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