File:Jervis 4-2-0 Experiment long firebox Railroad Gazette 1872.jpg

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English: An elevation drawing of the 4-2-0 locomotive Experiment, designed by engineer John B. Jervis and built in 1832 for the Mohawk and Hudson Railroad. Experiment was the first locomotive to have a pivoting leading four-wheel truck (bogie) for guidance, an invention that soon entered wide use on locomotives in the United States and other countries. This drawing shows Experiment as first built, with a long shallow firebox that was intended to burn anthracite, a hard coal which burns slowly. As it turned out, the locomotive had trouble producing sufficient steam with this firebox even when wood fuel was used. It was rebuilt in 1833 with a shorter and deeper wood-burning firebox; renamed Brother Jonathan, it was much more successful in this form.
Date
Source Railroad Gazette, February 3, 1872, p. 47, from an original by John B. Jervis.
Author Jervis, John B. (John Bloomfield), 1795-1885
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Jervis_4-2-0_Experiment_long_firebox_Railroad_Gazette_1872.jpg

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current10:34, 29 September 2019Thumbnail for version as of 10:34, 29 September 20191,208 × 1,120 (380 KB)Colin Douglas Howell (talk | contribs){{Information |description={{en|1=An elevation drawing of the 4-2-0 locomotive ''Experiment'', designed by engineer John B. Jervis and built in 1832 for the Mohawk and Hudson Railroad. ''Experiment'' was the first locomotive to have a pivoting leading four-wheel truck (bogie) for guidance, an invention that soon entered wide use on locomotives in the United States and other countries. This drawing shows ''Experiment...

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