Subsoil applicator

Details Subsoil applicator Subsoil applicator

1986-12-19

1988-09-27

Feyrer, James R.

Planting

Liquid or gas soil treatment

Hand manipulated

172699, A01C 2302

Patent

active

047733403

ABSTRACT:
The applicator comprises a relatively thin, streamlined knife blade adapted to be positioned with its longitudinal axis inclined upwardly and rearwardly during use with a leading edge of the applicator slicing through the subsoil and a lowermost and forwardmost point thereof penetrating the subsoil for the progressive entry of a wedge immediately behind the point which firms up and smooths the lowermost portion of the slice being created by the knife. Upwardly and rearwardly inclined, streamlined wings at the bottom of the blade but above the wedge project beyond the rear of the wedge to define a pocket into which anhydrous ammonia or other substances can be deposited. In one embodiment, the wings commence at the point and diverge rearwardly therefrom at a faster rate than the wedge to provide increased surface area for lifting and fracturing the soil as the knife moves therethrough, providing particular relief in root-bound subsoils. In a second embodiment especially suited for soils which are not self-closing, a pair of outwardly projecting closing fins are provided above and generally rearwardly of the wings to cause the rearwardly flowing soil to be directed downwardly and rearwardly into the slit and around and behind the knife, thus promoting closing of the slit and retention of the deposited substance.

REFERENCES:
patent: 2849969 (1958-09-01), Taylor
patent: 3188988 (1965-06-01), Peck
patent: 3296985 (1967-01-01), Shelton
patent: 4033271 (1977-07-01), Williams et al.
patent: 4446927 (1984-05-01), Robertson
patent: 4592294 (1986-06-01), Dietrich et al.
patent: 4616580 (1986-10-01), Moore et al.
patent: 4638748 (1987-01-01), Kopecky
Anon., Adams Tillage Tools (catalog), Jan. 1979, p. 16, (address unknown), copy in 172/699.
Anon., Fertilizer Tools Cut Your Production Costs"(sales leaflet), ACRA-Plant Sales, Inc., P.O. Box 1114, Garden City, Kansas, 67846, printed in 1982, copy in 111/7.

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