Combine with means for reducing the bounce of accelerated grain

Details Combine with means for reducing the bounce of accelerated grain Combine with means for reducing the bounce of accelerated grain

1976-08-11

1978-08-01

Kinsey, Russell R.

130 27Q, 56 146, A01F 1200

Patent

active

041036913

ABSTRACT:
A combine is provided with a threshing cylinder which rotates within a foraminous cage with a concave causing the grain to be separated from the severed crop. The separated grain chaff, and other small lightweight portions of the crop being harvested, pass through the concave and other parts of the cage and thence through a transverse slot. The material passing through the transverse slot is accelerated downwardly by a pair of counter-rotating accelerator rolls at substantially right angles to a rearward directed sheet or layer of air which serves to separate the lightweight material from the kernels of grain. The lightweight material is blown rearwardly over the cleaning shoe assembly of the combine and the heavier grain kernels continue in their downwardly direction impacting with the grain pan below the accelerator rolls. The grain pan of the longitudinally oscillated cleaning shoe assembly is provided with a plurality of longitudinally spaced transverse baffles which extend upwardly and rearwardly terminating at a height which is sufficient to maintain a quantity of grain on the pan in spite of the oscillating movement to which it is subjected during operation. The grain accelerated downwardly impacts with the grain retained on the grain pan, thereby substantially reducing the bounce of the grain as compared to that which would occur if the grain pan were of conventional construction wherein a substantial portion of the upward facing surface of the conventional grain pan would be exposed during operation.

REFERENCES:
patent: 2542346 (1951-02-01), Mormann
patent: 4007744 (1977-02-01), Shaver

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