A History of the Growth of the Steam-engineD. Appleton, 1902 - 530 pagini |
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Pagina 51
... passing from the piston - rod over pul- leys , TT . The machine had a cylinder two and a half inches in diameter ... passing down through the fire , and from the ash - pit through a side flue to the chimney . In starting the fire , the ...
... passing from the piston - rod over pul- leys , TT . The machine had a cylinder two and a half inches in diameter ... passing down through the fire , and from the ash - pit through a side flue to the chimney . In starting the fire , the ...
Pagina 72
... passing off to the chimney . This boiler was cemented with hydraulic mortar . It was 20 feet long , 9 feet wide , and 8 feet deep . It was heated by the waste heat from the roasting - furnaces . This was one of the earliest flue ...
... passing off to the chimney . This boiler was cemented with hydraulic mortar . It was 20 feet long , 9 feet wide , and 8 feet deep . It was heated by the waste heat from the roasting - furnaces . This was one of the earliest flue ...
Pagina 99
... passing to the under - side of the piston . The valve e is next closed , and c and fare again opened ; the down - stroke is repeated . The water and air entering the condenser are removed at each stroke by the air - pump , i , which ...
... passing to the under - side of the piston . The valve e is next closed , and c and fare again opened ; the down - stroke is repeated . The water and air entering the condenser are removed at each stroke by the air - pump , i , which ...
Pagina 104
... passing it between copper rollers filled with steam of sufficiently high temperature to rapidly evaporate the moisture . This patent was issued February 14 , 1780 . H M W ว In the following year , October 25 , 1781 , Watt patented five ...
... passing it between copper rollers filled with steam of sufficiently high temperature to rapidly evaporate the moisture . This patent was issued February 14 , 1780 . H M W ว In the following year , October 25 , 1781 , Watt patented five ...
Pagina 109
... passing a point which is variable , and which is determined by the special conditions in each case , aug- ment with greater rapidity than the gain by expansion . In actual practice , it is rarely found , except where spe- cial ...
... passing a point which is variable , and which is determined by the special conditions in each case , aug- ment with greater rapidity than the gain by expansion . In actual practice , it is rarely found , except where spe- cial ...
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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.