James Watt,Scottish engineer

Numéro d’image : 11831620
James Watt,Scottish engineer
James Watt (1736-1819),Scottish engineer and inventor. Watt made many practical improvements to the steam engine of his day. By 1790,the Watt steam engine had completely replaced the older Newcomen variety. His inventions included the double-acting engine where the piston both pushes and pulls (1782); the centrifugal governor,a device that controlled a process by means of variations in the process itself (1788); and the pressure gauge (1790). Watt also coined the term "horsepower" to describe a unit of energy. Engraving from Discoveries and Inventions of the Nineteenth Century (1898)
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