Here is my Day Off Job. Look it up ! It's the only working early 19th Century (1814/17) steam driven beam engine pumping water up the K&A Canal, which was it's original purpose when built.
There are two engines, one lifter, & one pusher, both driven by the 'new' condenser, James Watt invented system, which revolutionised steam engines at the turn of the 19th Century, & led to the explosion of steam driven industry (because they were so much more efficient than previously by using essentially vacuum instead of pressure to drive the machinery, by condensing the steam almost instantaniously).
This lead to the use of high pressure steam too as these engines use steam at 20 p.s.i. whereas high pressure ones use steam at a much higher pressure. The development of better boilers was essential too of course.
Watch this Video as a taster.
http://www.youtube.com/watch?v=CxhDmIX3sIQ&feature=player_embedded
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