1984-02-07
1985-02-19
Hirsch, Paul J.
130 27L, A01F 1226, A01F 1228
Patent
active
044999089
ABSTRACT:
The improved combine concave structure of the present invention includes a concave having a grid work of axially extending members and circumferentially extending members. Each of these members has an interior surface which is flat. The flat surfaces of the axially extending members are in the same curved surface as the flat surfaces of the circumferentially extending members so that there are no inward projections extending from the interior cylindrical surface of the concave. In addition, a flap is placed over the juncture between the hinged edge of the concave and the lower edge of the cylindrical housing above the concave. This prevents grain from spilling out through the juncture between the concave and the cylindrical housing thereabove.
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