The Steam EngineThomas Osmond Summers E. Stevenson & F. A. Owen, 1856 - 188 páginas |
Dentro del libro
Resultados 1-5 de 20
Página 17
... removing the finger , the water is drawn up into the vacuous space , in contradiction to the usual law of fluids . " From this description , which is not sufficiently explicit to inform us whether the tube was of that hair - like bore ...
... removing the finger , the water is drawn up into the vacuous space , in contradiction to the usual law of fluids . " From this description , which is not sufficiently explicit to inform us whether the tube was of that hair - like bore ...
Página 37
... the pressure of the external air is counterbalanced by that of the internal , it is evident that when a part of the air is removed . from beneath the piston , and an aperture is left 4 BEFORE THE TIME OF JAMES WATT . 37.
... the pressure of the external air is counterbalanced by that of the internal , it is evident that when a part of the air is removed . from beneath the piston , and an aperture is left 4 BEFORE THE TIME OF JAMES WATT . 37.
Página 46
... removal of weights was found to be inconvenient and troublesome , a lever was applied with a weight sliding upon it , so that with this simple arrangement an increase or decrease of pressure could be instantly obtained . This ...
... removal of weights was found to be inconvenient and troublesome , a lever was applied with a weight sliding upon it , so that with this simple arrangement an increase or decrease of pressure could be instantly obtained . This ...
Página 51
... removed one principal impediment to the effective working of a steam - engine . But it must be observed , that the expansive force of the steam in the cylin- der and the pressure of the external atmosphere are supposed to be equal , so ...
... removed one principal impediment to the effective working of a steam - engine . But it must be observed , that the expansive force of the steam in the cylin- der and the pressure of the external atmosphere are supposed to be equal , so ...
Página 52
... removed , and a bar called a plug - frame was intro- duced in its place . Surtzer , the author of a work on Hydraulics , published in 1729 , speaks in terms of high praise of Newcomen's atmospheric engine . " It is , " he says , " the ...
... removed , and a bar called a plug - frame was intro- duced in its place . Surtzer , the author of a work on Hydraulics , published in 1729 , speaks in terms of high praise of Newcomen's atmospheric engine . " It is , " he says , " the ...
Otras ediciones - Ver todo
Términos y frases comunes
adopted æolipile Anthemius application Arago atmosphere beam boiler Caledonian Canal called Charlotte Dundas coal cold water condensing apparatus connection construction crank cylinder discovery effect elastic employed evaporation exhibited expansive force expansive power experiment feet filled with steam fixed flask fly-wheel force of steam Fulton George Stephenson gine Glasgow Greenock heat honor horse-power hundred improvement inches increased ingenious introduced invention inventor iron James Watt Landgrave of Hesse load locomotive locomotive-engine machine machinery Marquis of Worcester mechanical contrivance mechanist ment metal miles an hour mind mode necessary Newcomen's engine object obtained opened paddle-wheels Papin patent piston power of steam present pressure of steam principle produced propelled proportion pump quantity rail railway raising water ratchet-wheels reader Samuel Morland Savery says scientific Smeaton Soho speed stationary engine steam-engine steam-vessel steamboat stroke success sufficient surface tained temperature thought tion tons tube vacuum valve velocity vessel voyage Watt's weight wheels
Pasajes populares
Página 16 - Then Paul stood in the midst of Mars' hill, and said, Ye men of Athens, I perceive that in all things ye are too superstitious. For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.
Página 32 - A CENTURY OF THE NAMES AND SCANTLINGS OF SUCH INVENTIONS, as at present I can call to mind to have tried and perfected which (my former notes being lost) I have, at the instance of a powerful Friend, endeavoured now in the year 1655 to set these down in such a way as may sufficiently instruct me to put any of them in practice.
Página 33 - I have taken a piece of a whole cannon, whereof the end was burst, and filled it three-quarters full of water, stopping and screwing up the broken end, as also the touch-hole, and making a constant fire under it; within twentyfour hours it burst, and made a great crack...
Página 115 - ... the branches of physical science, might perhaps have been conjectured. But it could not have been inferred from his usual occupations, and probably is not generally known, that he was curiously learned in many branches of antiquity, metaphysics, medicine, and etymology, and perfectly at home in all the details of architecture, music, and law. He was well acquainted too with most of the modern languages— and familiar with their most recent literature. Nor was it at all extraordinary to hear...
Página 122 - The manner of the carriage is by laying rails of timber from the colliery down to the river, exactly straight and parallel, and bulky carts are made with four rowlets fitting these rails, whereby the carriage is so easy, that one horse will draw four or five chaldrons of coals, and is of immense benefit to the coal merchants.
Página 116 - ... to select, from his inexhaustible stores, what might be best adapted to the taste of his present hearers. As to their capacity he gave himself no trouble ; and, indeed, such was his singular talent...
Página 57 - It was by his inventions that its action was so regulated as to make it capable of being applied to the finest and most delicate manufactures, and its power so increased as to set weight and solidity at defiance.
Página 115 - ... instructive in no ordinary degree ; but it was, if possible, still more pleasing than wise, and had all the charms of familiarity, with all the substantial treasures of knowledge. No man could be more social in his spirit, less assuming or fastidious in his manners, or more kind and indulgent towards all who approached him. He rather liked to talk, at least in his latter years ; but though he took a considerable share of the conversation, he rarely suggested the topics on which it was to turn,...
Página 117 - ... weight and brevity of his observations; and set off to the greatest advantage the pleasant anecdotes, which he delivered with the same grave brow, and the same calm smile playing soberly on his lips.
Página 33 - So that, having a way to make my vessels so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run like a constant fountain stream forty feet high. One vessel of water rarified by fire driveth up forty of cold water...