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PRR 1223
Pennsylvania Railroad 1223 is a 4-4-0 steam locomotive built for the Pennsylvania Railroad in 1905 by the railroad's own Altoona Works. The locomotive is the only preserved example of the D16sb class. After retirement from active service, the locomotive ran excursions for the Strasburg Railroad, in Strasburg from 1965 to 1989. Currently the engine is on static display at the Railroad Museum of Pennsylvania in Strasburg. It was listed on the National Register of Historic Places in 1979.
== History of class ==
(詳細はPennsylvania Railroad were the most modern of a long history of 4-4-0 type steam locomotives that the railroad used. The 1223 was home built by the railroad at its Juniata Shops in Altoona, Pennsylvania, in 1905. As built it was a high speed passenger engine with tall driving wheels. However, the 4-4-0 type, long the mainstay of American passenger and freight service, was already becoming outmoded when the 1223 was built, being superseded by ever-larger engines. The Pennsy itself was pioneering steel passenger cars, which the public soon demanded for the implied increases in safety. The 1223 was eventually rebuilt with smaller driving wheels for local freight service, having been replaced on passenger trains by engines like the E6 Atlantics and K4 Pacifics. It was modernized as well, receiving superheaters [the "s" in D-16sb), piston valves, an electric headlight, and other improvements.
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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