Patent ID: 7749055
Filing Date: 2010-07-06
Classification: A01F

Abstract:
1. An improved cob separation grate section having an arcuate shape for an axial flow combine harvester to separate corn cobs from the stalks and leaves, comprising: a plurality of latitudinally spaced apart elongated slot openings, each slot extending substantially the entire height of the grate, wherein at least one of the elongated slots is oriented at an angle from vertical; at least one longitudinal row of in-line smaller openings oriented at an angle from vertical and extending substantially the entire height of the grate, wherein the at least one row of in-line smaller openings is oriented substantially parallel to the direction of the at least one of the elongated slots oriented at an angle from vertical and wherein two or more of said slots are separated therebetween by said at least one row; and said grate having a peripheral row of in-line smaller openings located at a forward end and a back end of the grate; whereby cobs are passable through the slots but not the smaller openings, and whereby the corn grain is passable through the smaller openings but most material other than grain or cobs is not passable.