PROBLEM TO BE SOLVED: To allow a threshing feed chain to convey grain culms smoothly and to facilitate the supply of manually mowed grain culms to the threshing feed chain.SOLUTION: At a conveyance starting end part of a threshing feed chain (8) is provided a manually mowed grain culm limiting member (18) which switches between a limited state for limiting the supply of manually mowed grain culms to a threshing feed chain (8) when disposed in a position opposite the top of the conveyance starting end part of the threshing feed chain (8) and a limitation cancel position for allowing the supply of manually mowed grain culms to the threshing feed chain (8) when withdrawn from the conveyance starting end part of the threshing feed chain (8) to upward. Vertical clearances to form conveyance passages for grain culms transferred from a reaping device (3) side to the threshing feed chain (8) side are maintained between the conveyance starting end part of the threshing feed chain (8) in the limited state and the manually mowed grain culm limiting member (18).COPYRIGHT: (C)2014,JPO&INPIT【課題】脱穀フィードチェンによる穀稈搬送を円滑化するとともに、この脱穀フィードチェンへの手扱ぎ穀稈の供給を容易化する。【解決手段】脱穀フィードチェン(8)の搬送始端部に、脱穀フィードチェン(8)の搬送始端部の上側に対向する位置に配置されて脱穀フィードチェン(8)への手扱ぎ穀稈の供給を規制する規制状態と、脱穀フィードチェン(8)の搬送始端部から上方へ退避して脱穀フィードチェン(8)への手扱ぎ穀稈の供給を許容する規制解除状態とに切り替わる手扱ぎ規制部材(18)を備え、規制状態における脱穀フィードチェン(8)の搬送始端部と手扱ぎ規制部材(18)との間に、刈取装置(3)側から脱穀フィードチェン(8)側へ引き継がれる穀稈の搬送通路となる上下方向の隙間が維持される構成とする。【選択図】 図3