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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク American Star Bicycle ： ウィキペディア英語版 American Star Bicycle The American Star Bicycle was invented in 1880 by G. W. Pressey and manufactured by the H. B. Smith Machine Company in Smithville, Burlington County, New Jersey.〔(【引用サイトリンク】 The American Star )〕〔(【引用サイトリンク】 ca. 1885 American Star Safety Highwheeler )〕 It was characterized by a small wheel in front to avoid the problem of tipping forward inherent in other high wheelers. A Star bicycle was photographed being ridden down the steps in front of the United States Capitol in 1885 to demonstrate its longitudinal stability, and Star bicycles were used for the sport of bicycle polo in the mid-1880s. Pressey sued Smith in 1887 for royalties. The name "Star" was attributed to the double star arrangement of the spokes.〔 ==Details== The small front wheel, in diameter, steered, and the large rear wheel, in diameter, provided the forward driving force and bore most of the rider's weight.〔(【引用サイトリンク】 American Star bicycle, 1885–1890 )〕 The light load on the front wheel was reported to have made it skittish on loose surfaces such as sand and gravel.〔 American Stars incorporated pneumatic tires very soon after they were developed,〔(【引用サイトリンク】 Smith Pony Star bicycle )〕 and braking was provided by a spoon brake acting on the rear wheel and actuated by a lever on the right handlebar.〔 A pair of independent treadle mechanisms collected power from the rider's legs instead of a crank. Power from each treadle was transferred to the rear wheel by a leather strap over a ratchet mechanism. ''(See image in gallery below.)'' The attachment point of the leather strap could be moved to provide multiple gear ratios, and both treadles could be pressed simultaneously for a brief increase in torque.〔(【引用サイトリンク】 Smith Star bicycle )〕 A spring attached to the ratchet rewound the strap when the foot was raised.〔 This treadle arrangement also allowed riders of different sizes to ride the same bike comfortably without modification, as the pedals were not constrained to trace a circle about an axle.〔 An undated advertisement lists prices from $75 to $120, depending on wheel size and finish, which varied from "plainly finished machine; painted and striped" to "all nickled and polished, except the rim, which is painted and striped in gold."〔 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「American Star Bicycle」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.