Combine harvester cleaning apparatus

Details Combine harvester cleaning apparatus Combine harvester cleaning apparatus

1988-05-19

1989-09-05

Weiss, John

Crop threshing or separating

Cleaner

Sieve or grate

460 97, 56 165, 209234, A01F 1244

Patent

active

048634158

ABSTRACT:
A combine harvester, having threshing and separating means for threshing and separating crop material and a cleaning apparatus disposed to receive threshed and separated grain from said treshing and separating means and being operable to clean unwanted residue from the threshed and separated grain is disclosed wherein the cleaning apparatus, including at least a pair of cleaning sieves arranged to be oscillated generally back-and-forth for moving threshed and separated grain therealong while permitting the passage of cleaned grain therethrough, and further including a cleaning fan operable to direct a cleaning air blast to the cleaning sieves for urging unwanted residue to the threshed and separated grain into an airborne state for discharge from the combine harvester, is provided with an agitator positioned between the cleaning sieves. During operation, the cleaning sieves are moved relative to the agitator for removing straw particles that otherwise might tend to stick to one or both sieves in a generally upright orientation.

REFERENCES:
patent: 3593719 (1971-07-01), Ashton
patent: 4100720 (1978-07-01), Carnewal et al.
patent: 4401128 (1983-08-01), Fisher
patent: 4770190 (1988-09-01), Barnett

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