Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
adopted already application arrangement attached beam became become boat boiler Boulton built called carried century closed coal common complete condenser connected considerable construction cylinder described designed determined direction driving earlier effect engine equal expansion experiments feet finally fitted force four give given greater heat horse-power Illustrations important improvements inches in diameter introduced invention inventor iron known later less locomotive London machine machinery means mechanical method miles an hour minute motion moved nearly Newcomen opening passing patent perfect period pipe piston placed pounds practice pressure probably produced proposed pump railroad raised received road screw secured seen shown side sketch soon speed square steam steam-cylinder steam-engine steamboat steamers Stevens stroke success temperature tion tons tubes turned United usually valve vessel Watt Watt's weight wheels York
Página 134 - 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.
Página 383 - That the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity of force expended.
Página 87 - 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.
Página 107 - ENLARGED THE RESOURCES OF HIS COUNTRY, INCREASED THE POWER OF MAN, AND ROSE TO AN EMINENT PLACE AMONG THE MOST ILLUSTRIOUS FOLLOWERS OF SCIENCE AND THE REAL BENEFACTORS OF THE WORLD.
Página 87 - Sixthly, I intend, in some cases, to apply a degree of cold not capable of reducing the steam to water, but of contracting it considerably, so that the engines shall be worked by the alternate expansion and contraction of the steam. Lastly, instead of using water to render the piston or other parts of the engines air and steam tight, I employ oils, wax, resinous bodies, fat of animals, quicksilver, and other metals in their fluid state.