…In France, on the other hand, the pneumatic rock drill invented by M. Sommeiller in 1861 was actually used. Thus, the practical use of rock drills began, but in 1870, the modern type of rock drill with a separate drilling rod and striking piston was invented by American CH Shaw, which significantly improved drilling efficiency. However, it still did not have a mechanism for removing the rock fragments (cuttings) crushed by the bit, so removing the cuttings became the next problem. … *Some of the terminology that mentions "Shaw, CH" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…他方,フランスでは,1861年にソメイエM.Sommeillerが発明した圧気動削岩機が実際に使用された。このようにして,削岩機の実用化が始まったが,70年になると,現在のように削岩ロッドと打撃ピストンとが分離した形式の削岩機が,アメリカのショーC.H.Shawによって発明されて,さく孔能率が著しく向上した。しかし,まだビットで破砕した岩石の破片(繰り粉)を排除する機構はもっていなかったので,繰り粉の排除が,次の問題になった。… ※「Shaw,C.H.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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