Rotary combine

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A - Human Necessities

01

F

130/9

A01F 12/20 (2006.01) A01D 41/00 (2006.01) A01F 12/18 (2006.01)

Patent

CA 1061671

ABSTRACT OF THE DISCLOSURE Swathed grain is picked up by a conventional pick- up and fed into the side of one end of a transversely situat- ed rotary impeller assembly which moves the crop in a spiral motion against threshing grates on the lower portion and spiral fins on the upper portion. The crop reaches the other end of the impeller assembly and is transferred to one end of a se- cond transversely situated rotary impeller assembly whereupon the action is repeated until the crop reaches the other end of the second assembly whereupon the crop with the majority of grain removed, is discharged at right angles to the axis of the impeller assembly and into a final beater assembly. The threshed and separated grain falls from the impeller assemblies to a grain pan and is cleaned by two sieve assemblies which extend the full width of the impeller assemblies. Unthreshed grain is returned to a re-threshing unit mounted at one end of the beater. The crop is threshed by a flailing action and separated centrifugally as it passes through the impeller as- sembly. Another embodiment divides the crop in the first rotary impeller assembly and moves it outwardly towards the ends thereof whereupon it is transferred to the second rotary impeller assembly which then moves it towards the center and discharges it centrally. A further embodiment utilizes one transverse rotary impeller assembly which divides the crop and moves it outwardly to each end and then discharges it at each end of the impeller assembly into each end of a trans- verse auger assembly which further separates the grain and discharges the remaining crop against a curtain whereupon it falls upon a straw walker assembly which further separates the grain from the straw. -1-

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