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William Henry James Grout : ウィキペディア英語版 | W. H. J. Grout
William Henry James Grout (1839–1915) was a pioneering inventor and manufacturer of bicycles. He patented the ''Grout Tension Bicycle'' in 1870 which introduced several innovations including hollow forks to save weight, rubber tyres for a better ride and adjustable spokes which could be tensioned to align the wheel. He also devised a portable version of the penny-farthing, whose front wheel could be dismantled into four sections for carrying. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「W. H. J. Grout」の詳細全文を読む
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