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Treadle bicycle : ウィキペディア英語版 | Treadle bicycle
A treadle bicycle is a bicycle powered by a treadle instead of the more common crank. Treadles were one of the mechanisms inventors tried in order to position the pedals away from the drive wheel hub before the development of the bicycle chain or instead of it. Treadles have also been used to drive tricycles and quadracycles. ==History== Treadles were used before the advent of highwheelers on Thomas McCall's velocipede, on highwheelers themselves in an to attempt to address safety issues,〔(【引用サイトリンク】 Old Spokes Home: 1884 "Facile" Highwheel Safety 40" by Beale and Straw ) 〕〔(【引用サイトリンク】 Old Spokes Home: 1885 Xtraordinary Challenge 50" wheel by Singer ) 〕 on alternative configurations of highwheelers,〔(【引用サイトリンク】 Old Spokes Home: 1889 Special Pony Star ) 〕 and on the first device called a safety bicycle by British engineer Henry J. Lawson in 1876. Some inventors even combined treadles and chains on the same bicycle.〔(【引用サイトリンク】 Unique Treadle Drive Bicycle )〕〔(【引用サイトリンク】 The Glider Recumbent )〕
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「Treadle bicycle」の詳細全文を読む
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