Subsoil fertilizer applicator having arcuately adjustable knife

Details Subsoil fertilizer applicator having arcuately adjustable knife Subsoil fertilizer applicator having arcuately adjustable knife

1990-04-03

1991-07-02

Taylor, Dennis L.

Planting

Liquid or gas soil treatment

Drilling machines

111123, 172737, 172166, A01C 2302

Patent

active

050277243

ABSTRACT:
A fertilizer applicator employs a rotating, trash-cutting coulter and a knife located immediately behind the coulter with the leading arcuate edge of the knife and the rearward arcuate periphery of the coulter in intimately spaced relation to one another. As the coulter wears, the knife may be adjusted upwardly and forwardly along a slightly arcuate path of travel while simultaneously rocked slightly forwardly so as to maximize the length of the front knife edge that is close to the coulter while maintaining a substantially constant depth relationship between the knife and the coulter.

REFERENCES:
patent: 59638 (1866-11-01), Patton
patent: 465220 (1891-12-01), Steinke
patent: 562755 (1896-06-01), Banwarth
patent: 2001003 (1935-05-01), Tuft
patent: 2375372 (1944-05-01), Laitinen
patent: 2489385 (1949-11-01), Paul
patent: 2968266 (1958-01-01), Gustafson
patent: 3188989 (1965-06-01), Johnston
patent: 3237577 (1963-12-01), Wilkins
patent: 3292562 (1966-12-01), Clark
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patent: 3799079 (1974-03-01), Dietrich
patent: 4466364 (1984-08-01), Hassenfritz
patent: 4538532 (1985-09-01), Coker
patent: 4628840 (1986-12-01), Jacobson
patent: 4656957 (1987-04-01), Williamson et al.
patent: 4671193 (1987-06-01), States
patent: 4947770 (1990-08-01), Johnston

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