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Tom Thumb (locomotive)
''Tom Thumb'' was the first American-built steam locomotive used on a common-carrier railroad. Designed and built by Peter Cooper in 1830, it was designed to convince owners of the newly formed Baltimore and Ohio Railroad (B&O) to use steam engines. It is especially remembered as a participant in an impromptu race with a horse-drawn car, which the horse won after ''Tom Thumb'' suffered a mechanical failure. However, the demonstration was successful; and in the following year, the railroad committed to the use of steam locomotion and held trials for a working engine.
==Background==
The first railroads were little more than tracks on roads: horses pulled wagons and carriages with their wheels modified to ride on the rails. Only when the development of the steam engine had progressed to the point where such an engine could be mounted on wheels could trains be moved by steam power. The first steam locomotives were built in England, the birthplace of steam power; the first locomotives in America were imported from England. Soon, however, Americans began to plan their own locomotives.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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