THRESHER

PROBLEM TO BE SOLVED: To provide a thresher which attains high-efficiency threshing work by reducing a jam of processed product in a threshing chamber.SOLUTION: In a thresher, a cylindrical body (61) includes: a take-in spiral part (16); and a cylinder part (17) where a plurality of threshing teeth (18A, 19A) are erected. A front end part of the inner peripheral surface of a threshing chamber cover (40) covering the upside of a threshing cylinder (11) is provided with a fixed guide (48) disposed with such a gradient that a part on the downstream side in the rotating direction of the threshing cylinder (11) is located in the rear of a threshing chamber (10). At the back of the fixed guide (48), a plurality of movable guides 42 are provided to be variable in the inclination attitude to the rotating direction of the threshing cylinder (11). A rear end part (48B) of the fixed guide 48 extends to the back part from the take-in spiral part (16) in the cylindrical body (61).