Combine harvester concave frame assembly

A threshing concave assembly comprised of:

• a concave frame having a first side member and a second side member opposing each other, wherein the first and second side members each have an interior surface and an exterior surface, wherein the interior surfaces of the first and second side members oppose each other;
• the first and second side members each comprising a top surface, wherein each of the top surfaces comprise a first face and a second face each having a side profile;
• a crop threshing bar having a first end and a second end, wherein the first end comprises a third face and the second end comprises a fourth face, and wherein each of the third and fourth faces represent a cross-sectional side profile of the crop threshing bar;
• and
• wherein the first end of the crop threshing bar is affixed to an interior surface of the first side member and the second end of the crop threshing bar is affixed to the interior surface of the second side member, and wherein the side profile of the first and second face of each of the first and second side members substantially align with the cross-sectional side profile of the third and fourth face of the crop threshing bar.