Winnowing machine - Winnowing machine

Japanese: 唐箕 - とうみ
Winnowing machine - Winnowing machine

It is an agricultural tool that uses wind power to separate various grains, and is said to have been introduced from China during the Genroku period (1688-1704). The main working parts consist of a funnel for supplying materials, a wind tunnel containing an impeller, and a sorting tunnel. Materials dropped from the funnel into the sorting tunnel are hit by a crosswind from the impeller (driven by hand or motor), and refined grains fall at the front, impurities at the far end, and waste grains in between. Traditionally, it was widely used to separate rice, wheat, beans, etc., but recent agricultural machinery for grains (threshers, combine harvesters, rice hullers, etc.) has incorporated winnowing blades into the sorting section, so the use of winnowing blades as stand-alone tools has decreased.

[Michio Irie]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

各種の穀類を風力を利用して選別する農機具で、元禄(げんろく)時代(1688~1704)に中国から伝わったといわれる。おもな作用部は、材料供給用の漏斗(ろうと)、羽根車(翼車(よくしゃ))を収めた起風胴および選別風胴からなっており、漏斗から選別風胴に落とされた材料は、羽根車(人力またはモーターで駆動する)からの横風を受けて、いちばん手前に精粒、遠方に夾雑物(きょうざつぶつ)、その中間にくず粒が落下する。従来は、米やムギ、豆類などの選別のために広く利用されていたが、穀粒を対象とする最近の農業機械(脱穀機、コンバイン、籾摺(もみす)り機など)は、唐箕を選別部に組み込んでいるため、単体としての唐箕の利用は少なくなった。

[入江道男]

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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