…Then, in 1949, American JJ Couch invented the steam-powered percussion rock drill. In 1951, American JW Fowle invented a mechanism for rotating the rock drill rod using a ratchet and a pole. In this rock drill, the piston and rod were integrated. … *Some of the terminology that mentions "Fowle, JW" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その後,49年にアメリカのクーチJ.J.Couchによって蒸気動打撃式削岩機が発明された。さらに51年にはアメリカのファウルJ.W.Fowleが,ラチェットとポールによる削岩ロッドの回転機構を発明した。この削岩機では,ピストンとロッドとが一体になっていた。… ※「Fowle,J.W.」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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