Liquid fertilizer applicator
First Claim
Patent Images
1. A liquid fertilizer applicator including:
- (a) a portable frame and a support mechanism connected to said frame supporting a coulter wheel on a central axis;
(b) an arcuately shaped knife mounted on an arm of said support mechanism, said knife having a leading edge substantially complimentary in configuration to the outer periphery of said coulter wheel, said knife disposed rearwardly of said coulter and in partial surrounding relationship thereto, said knife positioned in uniform and adjacent generally skimming proximity to a portion of said coulter'"'"'s outer periphery from a lowermost point of said leading edge located below and behind said central axis, to an uppermost point of said leading edge located above and behind said central axis of said coulter;
(c) a liquid application conduit associated with said knife and connectable to a source of treating liquid for dispensing said liquid directly into a trench created by said coulter wheel; and
(d) adjustment means consisting of a plurality of horizontal slots formed in said knife and a plurality of complementary fasteners extending from said arm of said support mechanism positioned to correspond with said slots and adapted to be horizontally movable therein, said adjustment means operative to uniformly vary the spacing between said knife and said coulter and to maintain said spacing at a uniform predetermined distance to compensate for wear.
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Reexamination
Accused Products
Abstract
A liquid fertilizer applicator is provided, designed to be pulled by a motive power source, for use in a variety of soil and tillage conditions. It includes a disc-shaped coulter and an associated applicator knife mounted in trailing relation to the coulter, with a feed tube fixed to the rear of the knife. The leading edge of the arcuate knife conforms to and lies in close proximity to the outer periphery of the coulter disc. An alternative arrangement includes a knife with an angled lower facing edge and a heel extension to protect the feed tube opening.
44 Citations
8 Claims
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1. A liquid fertilizer applicator including:
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(a) a portable frame and a support mechanism connected to said frame supporting a coulter wheel on a central axis; (b) an arcuately shaped knife mounted on an arm of said support mechanism, said knife having a leading edge substantially complimentary in configuration to the outer periphery of said coulter wheel, said knife disposed rearwardly of said coulter and in partial surrounding relationship thereto, said knife positioned in uniform and adjacent generally skimming proximity to a portion of said coulter'"'"'s outer periphery from a lowermost point of said leading edge located below and behind said central axis, to an uppermost point of said leading edge located above and behind said central axis of said coulter; (c) a liquid application conduit associated with said knife and connectable to a source of treating liquid for dispensing said liquid directly into a trench created by said coulter wheel; and (d) adjustment means consisting of a plurality of horizontal slots formed in said knife and a plurality of complementary fasteners extending from said arm of said support mechanism positioned to correspond with said slots and adapted to be horizontally movable therein, said adjustment means operative to uniformly vary the spacing between said knife and said coulter and to maintain said spacing at a uniform predetermined distance to compensate for wear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification