Image:Walschearts valve gear.jpg

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The Walschearts valve gear on a Pennsylvania Railroad E6s steam locomotive.

This image is taken from the 1922 Locomotive Cyclopedia of American Practice which is now in the public domain. See Copyright. العربية | Česky | Deutsch | English | Français | Italiano | 日本語 | Lietuvių | Kurdî / كوردی | Русский | Slovenčina | +/-

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	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1923. See this page for further explanation.
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	This image might not be in the public domain outside of the United States (this especially applies in Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, and Switzerland). The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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