Planting – Drilling and broadcasting – Main and auxiliary frame machines
Patent
1986-06-20
1989-03-28
Hafer, Robert A.
Planting
Drilling and broadcasting
Main and auxiliary frame machines
111 34, 111 7, 415176, A01C 1504
Patent
active
048154008
ABSTRACT:
A hygroscopic-fertilizer-pellet applicator of the type having a fan blowing air through small tubes to propel the pellets to tube outlets for underground placement. The tendency of the hygroscopic fertilizer to absorb moisture, and to clog the small tubes, is relieved herein by heating the air which then dries the fertilizer. The source of heat is to have the fan pulling ambient air through a heat exchange, which latter is heated by hydraulic fluid flowing through it from a hydraulic motor operating the fan. The compression of the air by the fan further heats the air.
REFERENCES:
patent: 2919160 (1959-12-01), Blackburn
patent: 3986638 (1976-10-01), Dehart
patent: 4296695 (1981-10-01), Quanbeck
patent: 4555200 (1985-11-01), Morrison
patent: 4642149 (1987-02-01), Harper
"Blending and Conveying of Ceramic Raw Materials by Fluidization", Koble et al., from Ceramic Bulletin, vol. 32, No. 11, pp. 367-372, 1953.
Cox, Jr. Bernard K.
Hall Shade W.
Jensen Robert E.
Peters Eugene L.
Beehner John A.
DeMille Danton D.
Hafer Robert A.
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