CPC A01F 12/26 (2013.01) [A01F 12/28 (2013.01); A01F 12/32 (2013.01); A01F 12/44 (2013.01); A01F 7/04 (2013.01); A01F 12/00 (2013.01); A01F 12/22 (2013.01); A01F 12/24 (2013.01); A01F 12/442 (2013.01); A01F 12/446 (2013.01)] | 45 Claims |
1. A concave for an agricultural combine, comprising:
a base frame;
threshing beds carried by the base frame and forming openings therebetween for grain to pass through, each said threshing bed extends across one of the openings for separating grain from threshed crop material;
each said threshing bed comprising a unitary member including:
an upper surface;
a lower surface;
a first end;
a second end;
a length from the first end to the second end;
a first part extending between the first end and the second end;
a second part extending longitudinally between the first end and the second end;
struts spaced apart longitudinally between the first end and the second end, the struts connecting the first part to the second part;
a severed bar between a first grate opening and a second grate opening between adjacent struts, the first grate opening and the second grate opening are for grain to pass through, extend across one of the openings and through the unitary member from the upper surface to the lower surface and are between the first part and the second part, spaced apart longitudinally between the adjacent struts, closed proximally by the first part, and closed distally by the second part;
the severed bar including a first bar segment having a first free end and a second bar segment having a second free end; and
the first bar segment and the second bar segment extend inward toward each other from the first part and the second part, respectively, to the first free end and the second free end, respectively, on either side of a gap formed by and between the first free end and the second free end, the gap severing the first bar segment from the second bar segment and extending from the first grate opening to the second grate opening.
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