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Wootten firebox
The Wootten firebox is a type of firebox used on steam locomotives. The firebox was very wide to allow combustion of anthracite coal waste, known as Culm. Its size necessitated unusual placement of the crew, examples being camelback locomotives. The Wootten firebox made for a free-steaming, powerful locomotive, and the cheap fuel burned almost smokelessly; the combination made for an excellent passenger locomotive, and many camelbacks operated in this service.
== History ==
John E. Wootten was the Superintendent of Motive Power for the then Philadelphia and Reading Railroad (later simply the Reading Railroad) from 1866, and General Manager of the system from 1876. He saw the vast spoil tips (piles of anthracite waste) in the area as a possible plentiful, cheap source of fuel if he could develop a firebox that could burn it effectively. Through experiments, he determined that a large, wide firebox with a slow firing rate worked best, with a thin layer of the fuel and moderate draft.
The typical locomotive firebox of the day was long and narrow, fitting in between the locomotive's frames. The successful design of a trailing truck with the firebox mounted behind the driving wheels had not yet been developed. Wootten instead mounted his huge firebox above the locomotive's driving wheels. The problem now arose that with a cab floor at the then standard tender deck height, it would be impossible for the locomotive's engineer (driver) to see forwards around the firebox shoulders. Instead, a cab for the engineer was placed above and astride the boiler. The fireman, however, remained at the rear with minimal protection from the elements.
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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