High capacity air jet chaffer
OwnerMarvin James Gordeninventor
Life of this patent
Estimating the term…
Abstract
A crop chaffer for combines features air jets which deliver an air blast to the grain and chaff. The air jets and sifting screens are arranged in a cross sectionally “stair step” pattern in which the tread of each stair is the screen and the riser of the each stair has the air jet located thereon. The air jets do not allow grain passage, while the apertures in the screens do not produce a strong current of air. The chaffer is divided into individually separable and replaceable elements, thus greatly easing the burden of changing chaffers in the combine.
Claims17
A chaffer having a frame and having a chaffer length and having a chaffer width, for use in an agricultural combine having a fan blowing air through the chaffer for chaffing of a crop, the chaffer comprising:
- a plurality of air jets dimensioned and configured to provide an air blast;
- and
- a plurality of screens positioned between the air jets, at least one of the screens having a plurality of apertures dimensioned and configured to admit such crop, the plurality of apertures having a minimal flow of air therethrough.
A combine crop chaffer comprising:
- a plurality of coterminously positioned removable chaffing elements.
A chaffer having a frame and having a chaffer length and having a chaffer width, for use in an agricultural combine having a fan blowing air through the chaffer for chaffing of a crop, the chaffer comprising:
- at least one screen having a plurality of apertures dimensioned and configured to admit such crop, and
- at least one riser located adjoining the screen and substantially perpendicular thereto, the riser having positioned thereon at least one air jet dimensioned and configured to provide an air blast parallel to the screen.
Dependencies are inferred from the claim text.