Concave for use with combine cylinder

Details Concave for use with combine cylinder Concave for use with combine cylinder

1989-02-22

1990-03-20

Neuder, William P.

Crop threshing or separating

Threshing

With bar

460110, A01F 1018

Patent

active

049097725

ABSTRACT:
A rotating cylinder having a plurality of spaced raspbars cooperates with a complementary concave in a combine to separate grain from the leafy portion of the plant. The grate-like concave is disposed below and aft of the cylinder in a closely spaced, arcuate manner. Rotation of the cylinder causes its raspbars to engage the severed portion of the plant introduced between a lower, leading edge of the concave and the cylinder, whereupon the raspbars force the grain through the grate of the concave which retains the leafy portion of the plant which is then displaced aft and upward along the concave to its aft edge. Disposed on the concave's aft edge and along its length is an obliquely angled finger grate which directs the leafy residue onto the bottom of a rotating beater for further aft displacement and removal from the concave/cylinder grain separation stage. The concave includes an increased number of more closely spaced, lengthwise bars to permit slower rotation of the cylinder and improved grain separation. The angled finger grate and relative position of the aft, upper edge of the concave with respect to the rotating beater more efficiently eliminates the leafy residue of the harvested plant and prevents residue backfeed, or recirculation, through the concave/cylinder separation stage.

REFERENCES:
patent: 3203428 (1965-08-01), Ausherman
patent: 3256887 (1966-06-01), Ausherman
patent: 3927679 (1975-12-01), Ausherman
patent: 4796645 (1989-01-01), Kuchar

Affiliated with

Also associated with

Rating

Concave for use with combine cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Concave for use with combine cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concave for use with combine cylinder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-790052