Atmospheric engine

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a steam engine whose piston descends by the pressure of the atmosphere, when the steam which raised it is condensed within the cylinder.

See also: Atmospheric

References in periodicals archive ?
The Bombe is certainly interesting, but my personal favourite is the Newcomen atmospheric engine on display--and often in steam--at the Black Country Living Museum.
It builds power linearly and progressively, just like a proper atmospheric engine.
Experts will be on hand in the atmospheric Engine Rooms to highlight the wonders of 19th century engineering and reveal what goes on behind the scenes when the two bascules lift to allow ships to pass along the River Thames.
The atmospheric engine used steam to produce vacuum, a pressure lower than that of the atmosphere, which then developed the force pushing the piston through the downwards stroke.
Thompson's atmospheric engine V2 rocket engine Cooke & Wheatstone's five-needle telegraph Stephenson's Rocket Reynolds' X-ray set Model T Ford motor car Penicillin Pilot ACE (automatic computing engine) Crick & Watson's DNA model Apollo 10 command module
The Atmospheric Engine is a type of Vacuum Engine, also known as a 'Flame Gulper', a 'Flame Licker' or a 'Fire Eating Engine'.
In fact, he has gone back beyond the steam engine, to Newcomen's atmospheric engine, to develop an engine that runs on solar power.
The atmospheric engine was superseded by steam engines with separate condensers developed by James Watt.
Watt's separate condenser for the steam engine, which trebled the efficiency of the old atmospheric engines, was possibly the single most important invention of the 18th Century.
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