A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 129
5 to 1785 the partners acquired five patents,covering a large number of valuable improvements uponthe steam-engine, a.nd several independent inventions. Thefirst of these patents covered the now familiar and luaiver- 104 THE DEVELOPMENT OF THE MODERN STEAM-ENGINE. sally-used copying-press for… … Tig. ■27.—Watts Engine, 1781. In the following year, October 25, 1781, Watt patentedfive devices by which he obtained the rotary motion of theengine-shaft without the use of a crank. One of these wasthe arrangement shown in Fig. 27, and known as the sun- JAMES WATT AND HIS INVENTIONS. 105…
Steam-engines
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