Earth working – Diverse tools – With independent means for vertical movement
Patent
1982-11-22
1984-05-08
Johnson, Richard J.
Earth working
Diverse tools
With independent means for vertical movement
172181, 172178, 172196, 172509, A01B 1308
Patent
active
044469241
ABSTRACT:
A tillage system includes forward and rear sets of widely spaced discs and a set of plow points. The discs in the forward set are mounted at spaced intervals so as to leave alternate strips of worked and unworked soil of substantially equal width. Each disc of the rear set is mounted in a strip of soil left unworked by the forward set to complete the working of the top soil. The plow points are located in the furrows of one of the sets of discs (preferably the rear set) to permit some deep plowing. The working depths of the points and discs are independently adjustable. The system is designed for operation at high speed to provide complete coverage of the soil with minimal double working by the discs. It permits deeper penetration by the discs and a controlled amount of deeper plowing by the points while leaving a finished contour which is substantially free of ridges and furrows.
REFERENCES:
patent: 623677 (1899-04-01), Kouns
patent: 807349 (1905-12-01), Beasley
patent: 1551477 (1925-08-01), Fleming
patent: 1557109 (1925-10-01), Vandenberg
patent: 1884273 (1932-10-01), Sandeen
patent: 1944275 (1934-01-01), Sandeen
patent: 3675725 (1972-07-01), Shultz
patent: 3757871 (1973-09-01), Maust
patent: 4243104 (1981-01-01), Sipos
DMI Inc.
Johnson Richard J.
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