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Steam Engine

Steam Engine. First Engines. First invented by Thomas Newcomen in 1705. Used on early locomotives, steam boats and factories. Fueled by wood, oil, or coal. Steam Engine. Steam from the boiler enters the steam chest and is admitted to the front end of the cylinder by the valve

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Steam Engine

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  1. Steam Engine • First Engines. • First invented by Thomas • Newcomen in 1705. • Used on early locomotives, • steam boats and factories • Fueled by wood, oil, or coal

  2. Steam Engine Steam from the boiler enters the steam chest and is admitted to the front end of the cylinder by the valve slide (illustrated in blue).  The high pressure steam presses the piston backward, driving the engine wheels around one half turn

  3. Steam Engine At the end of the piston stroke the valve shifts, allowing the expended steam to escape through the exhaust port (underneath the blue valve slide).

  4. Steam Engine At the same time, the valve slide begins admitting high pressure steam to the back end of the cylinder.  This presses the piston forward, pulling the engine wheels around another half turn. 

  5. Steam Engine At the end of the forward stroke, the steam is released from the rear portion of the cylinder

  6. Steam Engine

  7. Steam Engine

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