Early in the design of the steam engine, Thomas Savoury (Thomas Savery) BE 2255 (1712), steam atmosphere. (Atmospheric-engine) Thomas of New Komen (Thomas Newcomen) were used in later experiments and Savoury and New Komen for joint development. Steam beam (beam engine) can be used in atmospheric pressure and vacuum pressure. The industry's first steam engine vacuum to pump water from mines. The steam engine of New Komen. The first version is slow and requires the on - off valve itself. Later I switched to the machine itself in the on - off valve later, James Watt (James Watt) has developed a steam engine from the New Coast Maine and is patented. The Watt steam engine, Watt Steam Engine, which runs smoother and more efficient. The development of effective transition from the invention of Oliver Evans and Rechard Trevithick using high pressure steam. The high-pressure steam engine used to Trevithick built as they are known. Steam and Cornish (Cornish engines).
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