A concave for an agricultural combine includes threshing beds carried by a base frame and forming openings therebetween for grain to pass through. Each threshing bed includes a first end, a second end, a length from the first end to the second end, an inner extremity, an outer extremity, and a separating grate extending across one of the openings for separating grain from threshed crop material. The separating grate extends along the length between the first end and the second end, is between the inner extremity and the outer extremity and includes grate openings and spaced-apart bars. The bars are between adjacent grate openings and include struts each connecting two adjacent parts of the separating grate between adjacent grate openings and severed bars each including bar segments extending inwardly toward one another to respective free ends on either side of a gap between adjacent grate openings.

A MOG limiting device, herein described as a MOG limiter, approximates a portion of the curvilinear length of a concave. The MOG limiting device can include a connection point near the middle of a concave, slightly offset from center. A bolt, washer and nut assembly protrudes downwardly from the underside of the concave. Two assemblies are positioned in the middle of each side of the concave. The assemblies cooperate with a mounting plate on the MOG limiters to form an upper concave connection and a lower concave connection in each half of the concave. In the cross frame, insert slots are positioned to receive a hinge point located at the end of each arced member making up the frame (rail supports). The hinge points are slidably inserted into the opening and then rotated upwardly to be positioned adjacent to and in conformity with the curvature of the underside of the concave with the connection assemblies holding the MOG limiter in place.

A MOG limiting device, herein described as a MOG limiter, approximates a portion of the curvilinear length of a concave. The MOG limiting device can include a connection point near the middle of a concave, slightly offset from center. A bolt, washer and nut assembly protrudes downwardly from the underside of the concave. Two assemblies are positioned in the middle of each side of the concave. The assemblies cooperate with a mounting plate on the MOG limiters to form an upper concave connection and a lower concave connection in each half of the concave. In the cross frame, insert slots are positioned to receive a hinge point located at the end of each arced member making up the frame (rail supports). The hinge points are slidably inserted into the opening and then rotated upwardly to be positioned adjacent to and in conformity with the curvature of the underside of the concave with the connection assemblies holding the MOG limiter in place.

A concave segment (6) for combine harvesters (1), which is provided for separating harvest (2), extends in a circumferential direction (65) in a curve about a concave axis (53), and includes numerous finger strips (62). The finger strips (62) each have a transverse strip (67), wherein the transverse strips (67) each extend in a direction of extension parallel to the concave axis (53), and wherein numerous fingers (63) are disposed on each of the transverse strips (67). The fingers (63) have a curved cross section thereby, and/or the transverse strips (67) have a wave shape (74) in the direction of extension (70).

A concave segment (6) for combine harvesters (1), which is provided for separating harvest (2), extends in a circumferential direction (65) in a curve about a concave axis (53), and includes numerous finger strips (62). The finger strips (62) each have a transverse strip (67), wherein the transverse strips (67) each extend in a direction of extension parallel to the concave axis (53), and wherein numerous fingers (63) are disposed on each of the transverse strips (67). The fingers (63) have a curved cross section thereby, and/or the transverse strips (67) have a wave shape (74) in the direction of extension (70).

A threshing concave frame assembly for crop separating operations in a combine harvester is disclosed. In one exemplary embodiment, the concave frame includes 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 exterior surface. In addition, an elongated threshing bar member is disposed between the interior surface of the first side and second side members of the concave frame. In particular, the elongated threshing bar member includes a first end and a second end, wherein the first and second ends are secured to the interior surface of the first and second side members of the concave frame.

A threshing concave frame assembly for crop separating operations in a combine harvester is disclosed. In one exemplary embodiment, the concave frame includes 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 exterior surface. In addition, an elongated threshing bar member is disposed between the interior surface of the first side and second side members of the concave frame. In particular, the elongated threshing bar member includes a first end and a second end, wherein the first and second ends are secured to the interior surface of the first and second side members of the concave frame.

A threshing concave frame assembly for crop threshing operations in a combine harvester is disclosed. In one exemplary embodiment, the concave assembly can include concave frame having a first side member and a second side member opposing each other, an elongated crop threshing bar or plate disposed at least partially above the first side member and the second side member, and a plurality of arcuate elongated rods disposed transversely relative to the elongated crop threshing bar. In addition, a face or side of the threshing bar can include an about 45-degree, 65-degree, or 90-degree angle relative to a horizontal plane, among others.

A threshing concave frame assembly for crop threshing operations in a combine harvester is disclosed. In one exemplary embodiment, the concave assembly can include concave frame having a first side member and a second side member opposing each other, an elongated crop threshing bar or plate disposed at least partially above the first side member and the second side member, and a plurality of arcuate elongated rods disposed transversely relative to the elongated crop threshing bar. In addition, a face or side of the threshing bar can include an about 45-degree, 65-degree, or 90-degree angle relative to a horizontal plane, among others.

A concave grate, concave bar, or concave rod assembly and configuration for threshing operations of a combine harvester is disclosed having concave bars or rods configured at various angles and positions such that they maximize threshing throughput. T concave bar assembly can include an elongated bar having a semi-cylindrical or partially round configuration. Further, the elongated bar can include a partial cut-out, notch, or channel longitudinally extending the length of the elongated bar, and wherein the elongated bar can be configured to be secured to a concave of the combine harvester. Here, the partial cut-out, notch, or channel further can include a first sloped or raised surface. Further, the first sloped or raised surface can be configured to make contact with one or more grains of a crop material, thereby effectively and efficiently separating the the one or more grains from the crop material.