![Evans' sketches of his first steam engine, circa 1803. Notable features include a twin boiler, 3-way valves, and a highly compact double-acting steam piston.](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Evans_Steam_Engine%2C_1803.png/505px-Evans_Steam_Engine%2C_1803.png)
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current | 10:40, 6 April 2014 | ![]() | 949 × 1,127 (794 KB) | Unus Multorum | User created page with UploadWizard |
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