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Stepped grate for an agricultural combine

a technology of agricultural combine and grate, which is applied in the field of rotary combine, can solve the problem of grain remaining proportion

Inactive Publication Date: 2006-06-15
RICKETTS JONATHAN E +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While prior art axial combines have been largely successful in separating grain, a significant portion of grain remains in the crop mix after the grating process.

Method used

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  • Stepped grate for an agricultural combine
  • Stepped grate for an agricultural combine
  • Stepped grate for an agricultural combine

Examples

Experimental program
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Embodiment Construction

[0021] Referring now to the figures and more particularly to FIG. 1, a typical self-propelled rotary combine 10 in which the grate of the present invention can be used is shown. The combine 10 includes a longitudinal or fore-and-aft extending frame 11 that includes a body or housing 12 defining an internal open area or space 13 and which is supported on front drive wheels 14 and steerable rear wheels 16. The combine 10 is powered by an engine (not shown) and controlled from an operator's station 18. A crop harvesting apparatus or header 20 and an infeed mechanism 22 are attached at a forward end of the combine. The infeed mechanism 22 feeds crop materials to a rotor assembly 24 enclosed within housing 12.

[0022] Referring now to FIG. 2, the rotor assembly 24 threshes and separates the crop materials presented into grain and material other than grain (MOG). As shown, the rotor assembly 24 is mounted in the internal area 13 defined by housing 12 and comprises an elongated and generall...

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PUM

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Abstract

A grate for an agricultural combine includes curved grate segments, each of which include mounting holes in at least one end segment. To provide a threshing grate, the end segments of the grate segments are offset to provide a “step”, or discontinuity in the radius of the assembled grate, which improves the threshing efficiency of the combine. The step can be provided by offsetting mounting holes between adjacent grate segments, and securing the grates to a frame member.

Description

[0001] This divisional application claims priority under 35 U.S.C. § 120 from co-pending U.S. patent application Ser. No. 10 / 896,569 filed on Jul. 22, 2004 by Ricketts et al. with the same title, the full disclosure of which is hereby incorporated by reference.FIELD OF THE INVENTION [0002] This invention relates generally to rotary combines. It relates particularly to an improved grate system in a rotary combine for more effectively separating grain and MOG (material other than grain) after it passes through the combine's threshing concave. BACKGROUND OF THE INVENTION [0003] Agricultural combines for harvesting and threshing of crop materials are well known in the art. Typically, agricultural combines includes a crop harvesting apparatus which reaps planted grain stalks, and an infeed mechanism arranged at the forward end of the combine to feed the grain stalks to a separating apparatus. The separating apparatus acts on the crop materials to thresh and separate grain from material o...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01F12/00
CPCA01F12/26
Inventor RICKETTS, JONATHAN E.BENNETT, KELVIN EUGENEDELEERSNYDER, SERGE
Owner RICKETTS JONATHAN E