A History of the Growth of the Steam-engineD. Appleton, 1902 - 530 pagini |
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Pagina 13
... secured was filled by water forced in by the pressure of the external atmosphere . His con- trivances were not apparently ever applied to any practically useful purpose . We have not yet passed out of the age of speculation , and are ...
... secured was filled by water forced in by the pressure of the external atmosphere . His con- trivances were not apparently ever applied to any practically useful purpose . We have not yet passed out of the age of speculation , and are ...
Pagina 43
... secured by a bridle , or stirrup , and screw , I , and may be readily removed to clear the valves or to renew them ; K is the handle of the two - way cock ; M is the in- jection - cock , and is kept open during the working of the engine ...
... secured by a bridle , or stirrup , and screw , I , and may be readily removed to clear the valves or to renew them ; K is the handle of the two - way cock ; M is the in- jection - cock , and is kept open during the working of the engine ...
Pagina 50
... secured by the use of gunpowder . The first machine of Papin ( Fig . 17 ) was very similar to the gunpowder - en- gine already described as the invention of Huyghens . In place of gunpowder , a small quantity of water is placed at the ...
... secured by the use of gunpowder . The first machine of Papin ( Fig . 17 ) was very similar to the gunpowder - en- gine already described as the invention of Huyghens . In place of gunpowder , a small quantity of water is placed at the ...
Pagina 60
... secured by this combination of inven- tions were many and manifest . The piston not only gave economy by interposing itself between the impelling and the resisting fluid , but , by affording opportunity to make the area of piston as ...
... secured by this combination of inven- tions were many and manifest . The piston not only gave economy by interposing itself between the impelling and the resisting fluid , but , by affording opportunity to make the area of piston as ...
Pagina 95
... secured land at Soho , two miles dis- tant from Birmingham , and there erected his new manu- factory , about 1762 . The business was , at first , the manufacture of ornamen- tal metal - ware , such as metal buttons , buckles , watch ...
... secured land at Soho , two miles dis- tant from Birmingham , and there erected his new manu- factory , about 1762 . The business was , at first , the manufacture of ornamen- tal metal - ware , such as metal buttons , buckles , watch ...
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Termeni și expresii frecvente
adopted application beam boat boiler Boulton Boulton & Watt Boulton and Watt built carriage carried century Charlotte Dundas coal compound engine condenser connected connecting-rod construction crank cross-head cut-off cylinder driving efficiency energy expansion experiments feet long feet stroke fire-box fire-engine Fitch flue fuel Fulton furnace gases George Stephenson gine heat heating-surface horse-power hull improvement inches in diameter introduced invention inventor James Watt later locomotive machine machinery mechanical method miles an hour motion Newcomen engine Oliver Evans paddle-wheels Papin patent pipe piston-rod placed pounds per square pressure propelling proposed pump pumping-engine railroad raised Richard Trevithick road Ross Winans Savery screw secured seen shaft sketch Soho speed square inch steam steam-boiler steam-carriage steam-cylinder steam-engine steam-pipe steam-pressure steam-valve steamboat steamers Stephenson Stevens stroke of piston success temperature Thomas Savery tion tons Trevithick tubes usually valve valve-gear vessel Watt Watt's weight wheels York
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Pagina 190 - What can be more palpably absurd and ridiculous than the prospect held out of locomotives travelling twice as fast as stage-coaches! We would as soon expect the people of Woolwich to suffer themselves to be fired off upon one of Congreve's ricochet rockets, as trust themselves to the mercy of such a machine going at such a rate.
Pagina 438 - That the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity of force expended.
Pagina 97 - I intend, in many cases, to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the same manner as the pressure of the atmosphere is now employed in common fire engines. In cases where cold water cannot be had in plenty, the engines may be wrought by this force of steam only, by discharging the steam into the open air, after it has done its office.
Pagina 256 - ... beneath their decks from the terrific sight, and left their vessels to go on shore ; while others prostrated themselves, and besought Providence to protect them from the approach of the horrible monster which was marching on the tides, and lighting its path by the fires which it vomited.
Pagina 97 - In engines that are to be worked wholly or partially by condensation of steam, the steam is to be condensed in vessels distinct from the...
Pagina 153 - The time will come when people will travel in stages moved by steam engines, from one city to another, almost as fast as birds fly, fifteen or twenty miles an hour.
Pagina 98 - ... the valves successively to give a circular motion to the wheel; the valves opening in the direction in which the weights are pressed, but not in the contrary. As the...
Pagina 104 - ... distance between it and the next valve is filled with steam, shut the valve, and the steam will continue to expand and to press round the wheel with a diminishing power, ending in one-fourth of its first exertion. The sum of this series you will find greater than one-half, though only one-fourth steam was used.
Pagina 167 - Committee to believe that the substitution of inanimate for animal power, in draught on common roads, is one of the most important improvements in the means of internal communication ever introduced. Its practicability they consider to have been fully established ; its general adoption will take place more or less rapidly, in proportion as the attention of scientific men shall be drawn by public encouragement to further improvement.