Concave for Rotary Combine
First Claim
1. A concave for a rotary combine, comprising:
- a body comprised of a plurality of curved frame sections connected in parallel side by side relation, each curved frame section having ends and sides, the body having an entry end and an exit end; and
each of the curved frame sections having a face with an upstanding crop processing profile, for the curved frame sections at the entry end of the body the crop processing profile is a threshing profile having an orientation extending between the sides and for the curved frame sections at the exit end of the body the crop processing profile is a separation profile comprised of sine wave vanes having an orientation extending toward the ends and having apertures positioned between the vanes to permit passage of grain.
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Accused Products
Abstract
There is provided a concave for a rotary combine which includes a body having a plurality of curved frame sections connected in parallel side by side relation. Each of the curved frame section has having ends and sides. The body has an entry end and an exit end. Each of the curved frame sections has a face with an upstanding crop processing profile. For the curved frame sections at the entry end of the body the crop processing profile is a threshing profile having an orientation extending between the sides. For the curved frame sections at the exit end of the body the crop processing profile is a separation profile of sine wave vanes having an orientation extending toward the ends and having apertures positioned between the vanes to permit passage of grain.
10 Citations
20 Claims
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1. A concave for a rotary combine, comprising:
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a body comprised of a plurality of curved frame sections connected in parallel side by side relation, each curved frame section having ends and sides, the body having an entry end and an exit end; and each of the curved frame sections having a face with an upstanding crop processing profile, for the curved frame sections at the entry end of the body the crop processing profile is a threshing profile having an orientation extending between the sides and for the curved frame sections at the exit end of the body the crop processing profile is a separation profile comprised of sine wave vanes having an orientation extending toward the ends and having apertures positioned between the vanes to permit passage of grain. - View Dependent Claims (2, 3, 4)
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5. A concave for a rotary combine, comprising:
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a body having ends and sides, the body having an entry end and an exit end, and a first side and second side on opposite sides of the body that extend between the entry end and the exit end; each of the curved frame sections having a face with an upstanding crop processing profile, for the curved frame sections proximate the entry end of the body a first crop processing profile has an orientation extending between the sides, the first crop processing profile comprises first vanes; for the curved frame sections proximate the exit end of the body a second crop processing profile has an orientation extending between the sides, the second crop processing profile comprises second vanes and having apertures positioned between the vanes to permit passage of grain; wherein the first vanes extend transverse relative to the sides along a first sloping path toward the inlet end and second vanes extend transverse relative to the sides along a second sloping path toward the outlet end, the first sloping path diverging away from second sloping path. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of threshing and separating grain from crop material employing a rotary combine, the rotary combine comprising a rotor received along the concave wherein the face of the concave faces an outer peripheral surface of the rotor, the outer peripheral surface including crop drive elements arranged to impart spiral movement to crop moved along the concave, comprising:
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rotating the rotor relative to the concave to generate a spiral flow of crop material along the concave; threshing and slowing the spiral flow the crop material along a first crop processing profile; and separating and speeding and stretching out the spiral flow of the crop material along a second crop processing profile to facilitate grain separation. - View Dependent Claims (18, 19, 20)
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Specification