上扱式自動送込脱穀機に関する研究

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  • Studies on an Automatic Over-Feed System Power Threshing Machine
  • ウエコキシキ ジドウ オクリコミ ダッコクキ ニ カンスル ケンキュウ

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The author studied experimentally on the threshing function of the automatic over-feed system power thresher.<br>This thresher was reconstructed from the lower-feed system power thresher being most commonly used at the present time in Japan, and it has special covers by which the bundles of paddy will be threshed from the head of ears to the part near the root gradually.<br>The main aims of this thresher are, first to thresh only the ears as single grains, next to decrease the products of the broken pieces of ears and foreign material (rubbish), and as results of that to reduce the power required.<br>Some principal results which pointed out the special features of the over-feed system were obtained from this investigation. They are as follows:<br>The power required, the products of the broken pieces of ears and foreign material (rubbish) decreased considerably as compared with the lower-feed system. When the tests were done with the adjusted bundles excepting sheaths, the power decreased about 34%, the products of the broken pieces of ears and foreign material (rubbish) about 30% and 35% respectively, and with the unadjusted bundles the foreign material (rubbish) decreased about 64%. Then, at the case of the unbunbled threshing, the power decreased about 58%.<br>If the construction of this thresher is more complete, it is expected that these results will be more improved.

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