Rotary feed cup having a spacer and a pivoted seal

Details Rotary feed cup having a spacer and a pivoted seal Rotary feed cup having a spacer and a pivoted seal

1977-10-06

1979-11-06

Spar, Robert J.

Dispensing

With discharge assistant

Movable or conveyer-type trap chamber

222414, G01F 1110, G01F 1124

Patent

active

041732987

ABSTRACT:
A feed cup mechanism, of the type generally used in grain drills, includes interchangeable feed wheels of various seed metering circumferential surfaces, of various tooth sizes or surface irregularities, and of various thicknesses. Interchangeable spacers of various thicknesses and of various peripheral sizes complement respective ones of the feed wheels to provide a metering passage having a suitable radial thickness for a particular type of seed and having a suitable width for metering a suitable quantity of seed. A pivoted seal is provided which cooperates with the various sizes of the feed wheels and with complementary ones of the spacers to prevent seed from passing from a receiving opening to a discharge spout except through the metering passage. Optionally, the pivoted seal is oscillated to agitate the incoming seed and thereby to provide more uniform metering of the seed.

REFERENCES:
patent: 176719 (1876-04-01), Westcott
patent: 1178571 (1916-04-01), Bozard
patent: 1705234 (1929-03-01), Brennan
patent: 1814483 (1931-07-01), Morgan
patent: 2548245 (1951-04-01), Stevens et al.
patent: 2698704 (1955-01-01), Beasley
patent: 3140017 (1964-07-01), Burch
patent: 3252629 (1966-05-01), Quick et al.
patent: 3489321 (1970-01-01), Kirschman
patent: 3606965 (1971-09-01), Cortelyou et al.

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