James Watt

Portrait of James Watt (1736–1819)<br />by [[Carl Frederik von Breda]] James Watt (; 30 January 1736 (19 January 1736 OS) – 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1776, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world.

While working as an instrument maker at the University of Glasgow, Watt became interested in the technology of steam engines. He realised that contemporary engine designs wasted a great deal of energy by repeatedly cooling and reheating the cylinder. Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines. Eventually he adapted his engine to produce rotary motion, greatly broadening its use beyond pumping water.

Watt attempted to commercialise his invention, but experienced great financial difficulties until he entered a partnership with Matthew Boulton in 1775. The new firm of Boulton and Watt was eventually highly successful and Watt became a wealthy man. In his retirement, Watt continued to develop new inventions though none was as significant as his steam engine work.

He developed the concept of horsepower, and the SI unit of power, the watt, was named after him. Provided by Wikipedia

1
by Watt, James
Published 1792
s.n

2
by Watt, James
Published 1773
Printed by Robert and Andrew Foulis, printers to the University

3
by Watt, James
Published 1770
s.n

6
by Watt, James
Published 1774
printed by William Auld

9
by Watt, James
Published 1797
printed by Campbell and Shea, No. 7, Pitt-Street

10
by Watt, James
Published 1846
J. Murray
Subjects: '; ...Watt, James / 1736-1819 / Correspondence...

11
by Watt, James
Published 1799
[s.n.]
Subjects: '; ...Watt, James / 1736-1819 / Trials, litigation, etc...

12
by Mackell, Robert
Published 1767
Other Authors: '; ...Watt, James...

13
by Beddoes, Thomas
Published 1796
printed by Bulgin and Rosser, for J. Johnson, in St. Paul's Church-Yard, London
Other Authors: '; ...Watt, James...

14
by Beddoes, Thomas
Published 1795
printed by Bulgin and Rosser: for J. Johnson, in St. Paul's Church-Yard, London
Other Authors: '; ...Watt, James...

15
by Beddoes, Thomas
Published 1796
printed for J. Johnson, ST. Paul's Church-Yard
Other Authors: '; ...Watt, James...

16
by Beddoes, Thomas
Published 1795
printed by Bulgin and Rosser: for J. Johnson, in St. Paul's Church-Yard, London
Other Authors: '; ...Watt, James...

17
by Beddoes, Thomas
Published 1795
s.n
Other Authors: '; ...Watt, James...

18
by Beddoes, Thomas
Published 1796
printed by Bulgin and Rosser, for J. Johnson, in St. Paul's Church-Yard, London
Other Authors: '; ...Watt, James...

19
by Beddoes, Thomas
Published 1796
printed by Bulgin and Rosser, for J. Johnson, ST. Paul's Church-Yard, London
Other Authors: '; ...Watt, James...

20
by Cooper, Thomas
Published 1792
Printed for J. Johnson
Other Authors: '; ...Watt, James...