Patent ID: 7520806

Claim:
A threshing system of an agricultural combine, comprising: a rotor rotatable within a concave; a drive controllably operable for rotating the rotor; a control in operative control of the drive, the control including a controller programmed to execute an operating routine for loosening a slug from between the rotor and the concave wherein the rotor is automatically rotated in a reciprocating agitating motion having at least predetermined profile and amplitude characterics; and a sensor for sensing loads acting in opposition to the rotation of the rotor, and wherein the controller is also programmed to execute an operating routine or loosening a slug from between the rotor and the concave wherein the rotor is automatically rotated reciprocally in the first and second rotational directions while sensing loads opposing the rotation, determining if the sensed loads are greater in one of the rotational directions, and, if so, then increasing an extent of rotational movements in the one of the directions in which the sensed loads are greater.