Single blade sealer for fertilizer applicator

Details Single blade sealer for fertilizer applicator Single blade sealer for fertilizer applicator

1983-08-22

1986-06-24

Hafer, Robert A.

Planting

Liquid or gas soil treatment

Hand manipulated

A01C 702

Patent

active

045961999

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 for cushioning the disc and slotted brackets for adjusting the working angle of the disc and its spacing from the fertilizer furrow.

REFERENCES:
patent: 358246 (1887-02-01), Arnett
patent: 516067 (1894-03-01), Trotter
patent: 530962 (1894-12-01), Packham
patent: 536094 (1895-03-01), Newton
patent: 672536 (1901-04-01), Newton
patent: 882353 (1908-03-01), Spiers
patent: 1084307 (1914-01-01), Altgelt
patent: 1158110 (1915-10-01), Cook
patent: 2493649 (1950-01-01), Alloway
patent: 2746371 (1956-05-01), Cods
patent: 3306240 (1967-02-01), Ritchie
patent: 4213505 (1980-07-01), Jolley

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