Earth working – Processes
Patent
1982-11-15
1984-12-25
Johnson, Richard J.
Earth working
Processes
172574, 172602, 172526, 172561, A01B 3908, A01B 3914
Patent
active
044897871
ABSTRACT:
For cutting the roots of weeds in agricultural fields, rolling knives in the form of flat, circular plates with sharp, peripheral edges are journaled to struts connected to a tool bar drafted in a direction of draft. The knives rotate about knife axes that are normal to knife planes containing their sharp edge. All knife axes are about 45.degree. from vertical. For bedded fields, the rolling knives are preferably connected to the tool bar in knife sets of two for each soil bed, with the knives of each set engaging opposite sides of each bed. As the rolling knives roll within the soil, their sharp edges sever the roots of weeds. In an alternate embodiment, a vertical stabilizer plate is rolled opposite each rolling knife to stabilize the soil therebetween. In another embodiment, each strut includes a hinge that has a hinge axis substantially within the knife plane. The knives swing about the hinge axes and trail in the direction of draft following the path of least resistance through the soil. The angles of the knife axes with respect to vertical are adjusted between 40.degree. and 50.degree. with various shaped shims inserted between angled foot pieces and hinge plates, or by substitution of footpieces with different angles. A scraper is attached to each strut to scrape soil from the knife or stabilizer plate sides.
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Coffee Wendell
Johnson Richard J.
Russ William A.
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