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REMOVABLE CONCAVE FOR AN AXIAL FLOW-TYPE COMBINE AND ADJUSTING MEANS THEREFOR

  • US 3,871,384 A
  • Filed: 06/29/1973
  • Issued: 03/18/1975
  • Est. Priority Date: 06/29/1973
  • Status: Expired due to Term
First Claim
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1. An axial flow combine having a chassis, an elongated longitudinally extending medially disposed cylindrical rotor casing supported on said chassis and embodying an arcuate section in the lower region thereof in the form of a perforate concave which defines an axially extending threshing region, a rotor designed for threshing cooperation with the concave the rotatable about the longitudinal axis of the casing, means for unidirectionally driving said rotor, said concave being movable bodily toward and away from the rotor through small increments of movement to vary the cooperating threshing characterisitics of the rotor and concave, a carrier projecting transversely across said chassis beneath the concave and having its proximate end pivoted to the chassis at one side thereof for swinging movement about a horizontal axis, means fixedly securing said concave to the carrier for movement bodily in unison therewith, and adjustable means effective between the distal end of the carrier and the chassis on the other side of the latter for raising and lowering the carrier.

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