A material processing system having a barrel also referred to hereinafter having a milling or impact surface and a central axis. The impact surface is impervious, in that material cannot pass through the surface, but rather is contained by the surface. An impact mechanism is located within barrel and is rotates about the central axis. The system has inlet openings and formed in the barrel at axially spaced locations along the axis. At least one outlet opening is formed in the barrel at a location intermediate of the inlets. The impact mechanism includes a plurality of hammers mounted on shaft which rotates about the axis.

A threshing and separating system includes a concave; a shaft defining an axis of rotation which is parallel to the concave and transverse to a longitudinal axis; and a plurality of slats rotated by the shaft and configured to move crop material against the concave. The slats have a helical shape winding around the axis of rotation. The slats include a first set of slats being predominantly on a left side of the shaft and having a left-handed helical shape, and a second set of slats being predominantly on a right side of the shaft and having a right-handed helical shape. At least one slat of said first set of slats is staggered relative to a closest slat of said second set of slats, such that a portion of a slat length of said at least one slat is overlapped with one or more adjacent slats of said second set.

A threshing and separating system includes a concave; a shaft defining an axis of rotation which is parallel to the concave and transverse to a longitudinal axis; and a plurality of slats rotated by the shaft and configured to move crop material against the concave. The slats have a helical shape winding around the axis of rotation. The slats include a first set of slats being predominantly on a left side of the shaft and having a left-handed helical shape, and a second set of slats being predominantly on a right side of the shaft and having a right-handed helical shape. At least one slat of said first set of slats is staggered relative to a closest slat of said second set of slats, such that a portion of a slat length of said at least one slat is overlapped with one or more adjacent slats of said second set.

A threshing apparatus in a combine harvester has a main frame and a threshing rotor supported by the main frame. A concave frame supports one or more interchangeable arcuate concave grate segments in a grate reception zone. An adjustment mechanism provides adjustment of clearance between the concave grate segments and the rotor. A multi-position stop device is provided to determine the lower limit of a concave adjustment range. The position of the stop device is determined by a profile of an installed one of the interchangeable concave grate segments.

A threshing apparatus in a combine harvester has a main frame and a threshing rotor supported by the main frame. A concave frame supports one or more interchangeable arcuate concave grate segments in a grate reception zone. An adjustment mechanism provides adjustment of clearance between the concave grate segments and the rotor. A multi-position stop device is provided to determine the lower limit of a concave adjustment range. The position of the stop device is determined by a profile of an installed one of the interchangeable concave grate segments.

GRAIN BEATER ACCELERATOR CYLINDER TO HARVESTERS provided with multiple paddles in a shell shape (2), distributed in the axial direction of the machine forming two sets of helioides (3 and 3), prepared reserved with respect to the center of the cylinder (4), in order to cut the straw, pull it toward the center of the cylinder (1) and feed the rotor homogeneously.

GRAIN BEATER ACCELERATOR CYLINDER TO HARVESTERS provided with multiple paddles in a shell shape (2), distributed in the axial direction of the machine forming two sets of helioides (3 and 3), prepared reserved with respect to the center of the cylinder (4), in order to cut the straw, pull it toward the center of the cylinder (1) and feed the rotor homogeneously.

An agricultural harvester has a chassis carrying a threshing and separating system for separating grain from Material Other than Grain (MOG). The threshing and separating system has a threshing rotor and at least one concave. At least one rasp bar is attached to the threshing rotor. The at least one rasp bar has an upper threshing surface and a trailing surface. The trailing surface is set at a draft angle. At least one trailing surface interrupter is located on the trailing surface and may be inclined slightly rearward from vertical. The trailing surface interrupters may be used with rasp bars with or without rasp bar spikes.

An agricultural harvester has a chassis carrying a threshing and separating system for separating grain from Material Other than Grain (MOG). The threshing and separating system has a threshing rotor and at least one concave. At least one rasp bar is attached to the threshing rotor. The at least one rasp bar has an upper threshing surface and a trailing surface. The trailing surface is set at a draft angle. At least one trailing surface interrupter is located on the trailing surface and may be inclined slightly rearward from vertical. The trailing surface interrupters may be used with rasp bars with or without rasp bar spikes.

A spine for providing structural support for a dual rotor harvesting machine, the spine having a first surface that is solid and directed towards a first rotor configured to rotate about a first axis and a second surface that is solid and directed towards a second rotor configured to rotate about a second axis. The spine also having at least one threshing insert positioned directly on the first surface and extending longitudinally along the first axis of the spine and at least one threshing insert positioned directly on the second surface and extending longitudinally along the second axis of the spine.