Separating disk and assembly for nut harvester

A method for removing dirt and debris from harvested nuts, comprising the steps of:

• providing a roller assembly including:
• a first rotational shaft mounted to a roller assembly frame, wherein the first rotational shaft coincides with a first rotational axis and includes a plurality of disks axially mounted thereon;
• a second rotational shaft mounted to the roller assembly frame parallel to the first rotational shaft, wherein the second rotational shaft coincides with a second rotational axis and includes a plurality of disks axially mounted thereon;
• and
• a plurality of disks, each including:
• a non-circular unitary body;
• a hole extending through the body and defining a first rotational axis;
• a first segment of the body including a first outside perimeter and a first segment thickness;
• and
• a second segment of the body adjacent to a first face of the first segment, the second segment including a second outside perimeter smaller than the first outside perimeter and a second segment thickness greater than the first segment thickness;
• simultaneously rotating the first and second rotational shafts, wherein the plurality of disks are configured to cooperate with disks mounted adjacent along the first rotational shaft and disks mounted along the second rotational shaft, whereby a first axial gap and a second axial gap between cooperating adjacent disks along the first rotational shaft combine to equal the second segment thickness minus the first segment thickness, and a radial gap is defined by a distance between the first outside perimeter of disks mounted along the first rotational shaft and the second outside perimeter of cooperating disks mounted along the second rotational shaft;
• and
• allowing dirt and debris to fall through spacing between the plurality of disks defined by the first axial gap, the second axial gap, and the radial gap.