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Three Section Threshing Concave Configuration and Adjustment Mechanism for an Agricultural Harvesting Combine

  • US 20170164559A1
  • Filed: 12/14/2015
  • Published: 06/15/2017
  • Est. Priority Date: 12/14/2015
  • Status: Active Grant
First Claim
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1. A rotor and cage assembly for a harvesting combine, which comprises:

  • (a) a rotor having a longitudinal axis of rotation;

    (b) a skeleton comprising curved spaced-apart side members affixed to laterally extending horizontal spaced-apart members therebetween with pivots where they connect, the skeleton surrounding the rotor, one of the curved spaced-apart horizontal members being terminated with curved fingers;

    (c) 3 concave inserts insertable laterally into the skeleton spanning 270°

    around the rotor, one of the concave inserts carrying straight fingers that interlace with the skeleton horizontal member curved fingers;

    (d) a control assembly comprising;

    plates having arcuate slots placed at 3 of the pivots of the skeleton assembly;

    (ii) control bars connected to the skeleton pivots; and

    (iii) an actuator connected to the control bars at one end for arcuate rotation of the control bars resulting in the synchronized rotation of the arcuate slotted plates so that the interlaced straight fingers move closer together or farther apart with the fixed skeleton assembly curved fingers for different types of grain; and

    (e) a grate assembly following and adjacent to the concaves skeleton and surrounding the rotor.

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