A History of the Growth of the Steam-engineD. Appleton, 1902 - 530 pagini |
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Pagina 14
... less striking than , any of the subsequent modifications of the machine . In Porta's contrivance , too , we should note particularly the separation of the boiler from Fr. 4. - Porta's Apparatus , A. d . 1601 . the " forcing vessel " —a ...
... less striking than , any of the subsequent modifications of the machine . In Porta's contrivance , too , we should note particularly the separation of the boiler from Fr. 4. - Porta's Apparatus , A. d . 1601 . the " forcing vessel " —a ...
Pagina 32
... less frequently met with in the public service now than then : " What have interloping people , that have no con- cern with us , to do to pretend to contrive or invent things for us ? " Savery then fitted his apparatus into a small ...
... less frequently met with in the public service now than then : " What have interloping people , that have no con- cern with us , to do to pretend to contrive or invent things for us ? " Savery then fitted his apparatus into a small ...
Pagina 40
... less of the lowest level , and were therefore exposed to danger of submergence whenever , by any accident , the water should rise above that level . In many cases this would result in the loss of the engine , and the mine would remain ...
... less of the lowest level , and were therefore exposed to danger of submergence whenever , by any accident , the water should rise above that level . In many cases this would result in the loss of the engine , and the mine would remain ...
Pagina 67
... less heat than when the iron was directly exposed to the steam . Mr. Beighton was the first to use the water of condensation for feeding the boiler , taking it di- rectly from the eduction - pipe , or the " hot - well . " Where only a ...
... less heat than when the iron was directly exposed to the steam . Mr. Beighton was the first to use the water of condensation for feeding the boiler , taking it di- rectly from the eduction - pipe , or the " hot - well . " Where only a ...
Pagina 68
... less capacity for heat than those of brass . In a very few years after the invention of Newcomen's engine it had been introduced into nearly all large mines in Great Britain ; and many new mines , which could not have been worked at all ...
... less capacity for heat than those of brass . In a very few years after the invention of Newcomen's engine it had been introduced into nearly all large mines in Great Britain ; and many new mines , which could not have been worked at all ...
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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.