SELF-PROPELLED GRAIN COMBINE HARVESTER Russian patent published in 1994 - IPC

FIELD: agricultural machines. SUBSTANCE: combine harvester has axial threshing-and-separating device with at least two rotors and housing enclosing the rotors. Housing has through holes for tetreshed grain. To provide perfect separation of grain, housing enclosing both rotors forms a space to allow straw heap fed by first rotor to expand before being taken by second rotor. This facilitates dropping out of grains left inside straw heap. EFFECT: increased separation of grain from straw heap. 6 cl, 4 dwg