In 1769 Watt sought and obtained a patent for a "new method for lessening the consumption of steam and fuel in fire engines". In 1776, he built an engine with a cylinder of 127 cm diameter to pump ...

for the large memorial volume on “James Watt and the Steam Engine”, due to the collaboration of Mr. Rhys Jenkins and Mr. Dickinson, was never likely to be widely read, while the older work by ...

These early steam engines produced a vacuum to generate power and were commonly used for pumping water out of mines. In 1763 James Watt was repairing a model of a Newcomen engine. He developed ...