Earth working – Tool – standard or connection – Subsoilers
Patent
1990-04-25
1991-09-24
Taylor, Dennis L.
Earth working
Tool, standard or connection
Subsoilers
172721, 172739, 172770, A01B 300
Patent
active
050506854
ABSTRACT:
A bentleg plow apparatus has a forward direction and includes a mounting frame, an upper blade-like portion secured to the frame and extending generally downwardly, a first lower blade-like portion connected to the upper portion and extending downwardly and laterally to one side, a second lower blade-like portion connected to the upper portion and extending downwardly and laterally to the other side. Each lower portion has a rake angle with respect to the forward direction, the rake angle being defined, when the plow apparatus is moving horizontally on a horizontal terrain, as the angle made to the horizontal by the intersection of the respective lower portion with a vertical plane parallel to said forward direction, the rake angle being such that the lower portions tend to penetrate further into soil being plowed as the plow apparatus is moved in forward direction.
REFERENCES:
patent: 209401 (1878-10-01), Johnson
patent: 620429 (1899-02-01), Deterding
patent: 1634531 (1927-07-01), Bergsten
patent: 2080741 (1937-05-01), Peterson
patent: 4409912 (1983-10-01), Koronka et al.
patent: 4548276 (1985-10-01), Linger
patent: 4817727 (1989-04-01), Mielke et al.
"A New Look in Tillage Tools", Implement & Tractor, Jan. 1982, p. 26.
"Paraplow", Howard Rotavator Co., Inc., Sales Brochure, Jan. 1985.
Taylor Dennis L.
The Governors of the University of Alberta
Thompson Jeffrey L.
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