Social England : a record of the progress of the people in religion, laws, learning, arts, industry, commerce, science, literature and manners, from the earliest times to the present day . then an engine can beturned out of hand in twoor three weeks. I have fixedmy mind upon making twelveto fifteen reciprocating andfifty rotative engines perannum. In 1777 Watthimself went to Cornw^allto set up pumping enginesthere, of one of which,built at Chacewater, heAvrites: The velocity,violence, magnitude noise of the en-gine give universal satisfaction to all beholders. It forkedwater as no
Social England : a record of the progress of the people in religion, laws, learning, arts, industry, commerce, science, literature and manners, from the earliest times to the present day . then an engine can beturned out of hand in twoor three weeks. I have fixedmy mind upon making twelveto fifteen reciprocating andfifty rotative engines perannum. In 1777 Watthimself went to Cornw^allto set up pumping enginesthere, of one of which,built at Chacewater, heAvrites: The velocity,violence, magnitude noise of the en-gine give universal satisfaction to all beholders. It forkedwater as no engine had done before. The news spread rapidlyover the country. In 1781 Boulton wrote to Watt, The peoplein London and Manchester are all steam-mill mad. In 1783Watt built a steam-hammer capable of striking 300 blows aminute, with a stroke of two feet and a hammer head of sevenand a half hundredweight; but his and other steam-hammersof the eighteenth century, were all tilt hannners—that is, thehammer was fastened at the end of the shaft and the head raisedby the action of cams or some such plan; thus the head movedon a curve and would only strike a full straight blow on a coni-. 3I0DEL OF IXVKllTED STEAJI ILJIPINGEXGIXE. {Victoria and Albert Musann.) 630 EEVOLUTIOX AND REAGTIOX. [1784 paratively small object, for a big object did not leave the hammerroom to do any effective Avork. In this way the machine wasunsatistactor}-, for the heavier and bigger the job, the less thehanmier could do. Watt in no way forestalled Xasmyth, whosehammer is on a different and better principle. In 178(3 Watt made double - acting engines ofconsiderable size, which were setup at the Albion Mills, near Black-friars Bridge. The engines were offifty horse-power each and workedwith a steam - pressure of fivepounds to the inch. They drovetwenty pairs of mill-stones, andcould grind 150 bushels of wheatan hour, and the steam-power Avasalso used for fanning, sifting, load-ing and unloading, hoisting and
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