Cultivator sweep with pair of rearwardly extending downturned ri

Details Cultivator sweep with pair of rearwardly extending downturned ri Cultivator sweep with pair of rearwardly extending downturned ri

1987-02-24

1989-07-25

Stouffer, Richard T.

Earth working

Tool, standard or connection

Non-rectangular, symmetrical type

172732, 172770, A01B 3920

Patent

active

048504351

ABSTRACT:
The convex upper surface of the generally triangular sweep has oppositely inclined, lateral faces that diverge from the forwardmost point of the sweep and serve to loosen and lift the soil while the outer cutting edges sever subsurface roots of weeds and other above-ground growth. Rigid, rearwardly extending flaps at the rear extremity of the sweep are disposed at such a strategic angle that although they rigidify the trailing section of the sweep and reduce wear which might otherwise occur at outer rear corners of the sweep, they avoid untoward turning and rolling of the loosened soil and severed plant materials so that moisture-retaining trash and plant residue is left intact on the ground surface.

REFERENCES:
patent: 186803 (1877-01-01), Conaway
patent: 925362 (1909-06-01), Lucier
patent: 976518 (1910-11-01), Stanza
patent: 983629 (1911-02-01), Lundell
patent: 1549633 (1925-08-01), Uzemack
patent: 1633388 (1927-06-01), Silver
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patent: 4269274 (1981-05-01), Robertson et al.
patent: 4333536 (1982-06-01), Ryan
patent: 4363364 (1982-12-01), Wetmore
patent: 4415042 (1983-11-01), Cosson
patent: 4580639 (1986-04-01), Johnson

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