Device for metering granular material

Details Device for metering granular material Device for metering granular material

1976-04-19

1977-06-14

Tollberg, Stanley H.

Planting

Drilling

Lister units

111 85, 222410, A01C 504, A01C 712

Patent

active

040290280

ABSTRACT:
A metering device is described which provides for very accurate metering of granular material such as seeds or fertilizer. The device incorporates two main components: a solid casing having a slot with an open side and decreasing cross-section, and a corresponding rotor which frictionally urges material along the slot. The rotor has a resilient surface and can be in the shape of a disc or of a roller to correspond with the shape of the casing. The device allows significant savings in the spreading of granular material over conventional devices.

REFERENCES:
patent: 2292909 (1942-08-01), Thoma et al.
patent: 2499095 (1950-02-01), Hall
patent: 2923444 (1960-02-01), Orendorff
patent: 2940640 (1960-06-01), Erickson

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