Long DescriptionTypes include: Atmospheric: worked by the vacuum created when low-pressure steam is condensed in the cylinder, as developed by Thomas Newcomen (1663-1729). Beam engine: with a large pivoted beam moving in an oscillating fashion by the flywheel. It may drive a flywheel or be non-rotative. Watt and Cornish: single-cylinder; compound: two cylinders; triple expansion: three cylinders.