| 摘要 |
PROBLEM TO BE SOLVED: To enable a manual threshing operation to be safely and easily carried out at the manual threshing operation, and to enable reaped grain culms to be conveyed in good conveying posture at a normal operation. SOLUTION: A grain culm-support means 44 installed in the conveyance-starting terminal part of a feed chain 27 is formed so as to be selectively changeable between a manually threshing position covering the upper part of the conveyance-starting terminal part of the feed chain 27, and a normal operation position for guiding the root parts of the grain culms reaped by a pretreatment part 28 from the lower part. As a result, the manual threshing operation of manually reaped grain culms can be carried out in a state of the conveyance-starting part of the feed chain 27 covered with the grain culm-support means 44 at the manual threshing operation, and the grain culms reaped by the pretreatment part 28 can be conveyed in the good conveying posture by being smoothly guided by the grain culm-support means 44 in the normal operation. COPYRIGHT: (C)2004,JPO&NCIPI
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