PROBLEM TO BE SOLVED: To reduce the forth loss in a threshing device, and to reduce the loss at the outside of the machine.SOLUTION: The threshing device includes: a threshing chamber (15) in which a threshing cylinder (18) having multiple threshing teeth (19) are rotatably supported and a dust exhausting chamber (17), in which a threshing opening (21) is opened at a lateral side of the threshing chamber (15). A free grain collection chamber (56) for collecting free grains with the threshing teeth (19) at the rear end of the threshing cylinder (18) is formed at a rear side portion rather than a communication port (23) for communicating the threshing chamber (15) with the dust exhausting chamber (17). A partition plate (55) for partitioning the threshing chamber (15) and the free grain collection chamber (56) is provided at an upper portion of the threshing chamber (18), and a first blade (50) facing to a rotation trajectory of the threshing teeth (19) is provided at the upper side portion of the threshing opening (21).COPYRIGHT: (C)2013,JPO&INPIT【課題】脱穀装置における四番ロスを減少させ、機外損失を低減する。【解決手段】多数の扱歯(19)を有する扱胴(18)を軸架した扱室(15)と排塵処理室(17)とを備え、扱室(15)の横側に扱口(21)を開口した脱穀装置において、扱室(15)と排塵処理室(17)とを連通する連通口(23)よりも後側の部位に、扱胴(18)後端部の扱歯(19)によってささり粒を回収するささり粒回収室(56)を形成し、扱室(15)とささり粒回収室(56)との間を仕切る仕切板(55)を扱胴(18)の上方の部位に設け、扱口(21)の上側の部位には扱歯(19)の回転軌跡に臨む第1切刃(50)を設ける。【選択図】図9
