Single blade sealer for fertilizer applicator
First Claim
1. An improved adjustable cushion furrow closer for a fertilizer applicator having a shank carrying an applicator knife for forming a furrow for fertilizer, said improved closer comprising:
- mounting means rigidly mounted to said shank and including a mounting plate extending behind said shank;
a pivot frame in the form of a yoke and having first and second spaced side plates;
first means for pivotally mounting said pivot frame to said mounting means for vertical motion about a pivot axis located beneath said mounting plate;
cushion spring means including a spring bolt extending through said mounting plate and provided at its lower end with a sleeve for rotatably mounting the lower end of said cushion spring means to said pivot frame, the side plates of said pivot frame including a plurality of sets of aligned apertures, said side plates being spaced to receive said sleeve of said spring bolt, each set of apertures defining a horizontal axis and located in said pivot frame to adjust the down pressure on said pivot frame in the normal position when said sleeve of said spring bolt is secured in one of said sets;
a securing pin having an enlarged head on one end and a threadless shank received in a corresponding set of apertures in said pivot frame and through the sleeve on said spring bolt to secure the lower end of said spring bolt to said pivot frame;
removable threadless clip means for releasably securing said securing pin to said pivot frame in an associated set of apertures when the same is assembled thereto and to said sleeve of said spring bolt;
ground engaging furrow closing means;
second means for mounting said furrow closing means to the distal end of said pivot frame remote from the connection of said cushion spring.
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Accused Products
Abstract
A single disc sealer for closing the groove formed by a fertilizer knife is mounted behind the applicator with its cutting edge working immediately adjacent the groove. The work surface has formed in it a raised annular deflection surface spaced inwardly of the periphery of the disc a distance approximately equal to the working depth of the disc. The edge of the disc cuts a ribbon of soil adjacent the furrow, the periphery working surface of the disc displaces the soil laterally toward the groove to close it, and the deflection surface directs the soil down into the furrow rather than lifting the soil as in the case of conventional disc covers, while slightly compacting the soil. The disc mount includes a spring assembly for cushioning the disc and is provided with a plurality of sets of adjusting apertures which provide an adjustable mount for the lower end of the spring assembly for varying disc pressure, and the lower end of the spring assembly may quickly be disassembled from and assembled to one of the plurality of sets of apertures. The spring assembly is mounted off-normal to provide fast recovery following striking of an object by the disc. Slotted brackets allow for adjusting the working angle of the disc and its spacing from the fertilizer furrow.
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Citations
7 Claims
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1. An improved adjustable cushion furrow closer for a fertilizer applicator having a shank carrying an applicator knife for forming a furrow for fertilizer, said improved closer comprising:
- mounting means rigidly mounted to said shank and including a mounting plate extending behind said shank;
a pivot frame in the form of a yoke and having first and second spaced side plates;
first means for pivotally mounting said pivot frame to said mounting means for vertical motion about a pivot axis located beneath said mounting plate;
cushion spring means including a spring bolt extending through said mounting plate and provided at its lower end with a sleeve for rotatably mounting the lower end of said cushion spring means to said pivot frame, the side plates of said pivot frame including a plurality of sets of aligned apertures, said side plates being spaced to receive said sleeve of said spring bolt, each set of apertures defining a horizontal axis and located in said pivot frame to adjust the down pressure on said pivot frame in the normal position when said sleeve of said spring bolt is secured in one of said sets;
a securing pin having an enlarged head on one end and a threadless shank received in a corresponding set of apertures in said pivot frame and through the sleeve on said spring bolt to secure the lower end of said spring bolt to said pivot frame;
removable threadless clip means for releasably securing said securing pin to said pivot frame in an associated set of apertures when the same is assembled thereto and to said sleeve of said spring bolt;
ground engaging furrow closing means;
second means for mounting said furrow closing means to the distal end of said pivot frame remote from the connection of said cushion spring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- mounting means rigidly mounted to said shank and including a mounting plate extending behind said shank;
Specification