Article dispensing – With discharge assistant – Article adhering or gripping type
Patent
1985-12-23
1987-11-03
Marmor, Charles A.
Article dispensing
With discharge assistant
Article adhering or gripping type
221278, 111 7, 406 68, 222216, 222225, 222630, A01C 704
Patent
active
047038683
ABSTRACT:
Apparatus for metering and dispensing seeds from a liquid or gel suspension of seeds includes a rotor having a plurality of orifices disposed within concave-shaped recesses about the peripheral surface of the rotor, each recess communicating with a bore of the rotor by a passageway. The rotor is supported within a recess in a housing by a stationary pintle having circumferentially extending grooves which are aligned with the radial passageways in the rotor, the grooves being connected to a pressure source and to a suction source so as to enable a suction to be applied to orifices located at a first region of the housing and a pressure to be applied to orifices located at a second region of the housing. The orifices located at the first region are exposed to the seed suspension, and the suction causes a seed from the suspension to be drawn to and held on the peripheral surface. The orifices located at the second region are adjacent to a transfer fluid passageway through the housing which communicates with the peripheral surface of the rotor at the second region, and the pressure causes the seeds carried by the rotor to be ejected into the transfer fluid flow. The apparatus enables sprouted seeds to be handled without damage and affords a uniform distribution of seeds in the transfer fluid, thereby promoting uniform planting of seeds.
REFERENCES:
patent: 1501297 (1924-07-01), Anderson
patent: 1854148 (1932-04-01), Hunter
patent: 3204045 (1966-12-01), Kelley et al.
patent: 3387746 (1968-06-01), Whipple
patent: 3627173 (1971-12-01), Kerker
patent: 3648631 (1972-03-01), Fiedler et al.
patent: 3750832 (1973-08-01), Ovarnstrom
patent: 4181241 (1980-01-01), Currah
U.S.S.R. Abstract 575,060, 10-1977.
Clarke Dennis P.
Marmor Charles A.
University of Florida
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