A Treatise on the Steam-engine in Its Various Applications to Mines, Mills, Steam Navigation, Railways, and Agriculture: With Theoretical Investigations Respecting the Motive Power of Heat and the Proper Proportions of Steam-engines, Elaborate Tables of the Right Dimensions of Every Part, and Practical Instructions for the Manufacture and Management of Every Species of Engine in Actual UseLongmans, Green, and Company, 1868 - 495 páginas |
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Página 3
... distance from the bottom as to permit the water to get out , which pipe passing through the cover is to rise a short dis- tance above it . The box is to be filled with water by an aperture , which is afterwards to be closed up steam ...
... distance from the bottom as to permit the water to get out , which pipe passing through the cover is to rise a short dis- tance above it . The box is to be filled with water by an aperture , which is afterwards to be closed up steam ...
Página 11
... distance in the cylinder , Fig . 6 . Various forms of Early Boilers . 11 in Russia . A is the ashpit : B the furnace ; C C the hemispherical top of the boiler ; c c a cylinder joined with flanges and screws to the top to give more steam ...
... distance in the cylinder , Fig . 6 . Various forms of Early Boilers . 11 in Russia . A is the ashpit : B the furnace ; C C the hemispherical top of the boiler ; c c a cylinder joined with flanges and screws to the top to give more steam ...
Página 17
... distance during the descent of the piston , the catches being either inoperative during the ascent , or made to act upon ratchets disposed in the contrary direction , - appear to have been the instruments ; but in 1780 the ratchet work ...
... distance during the descent of the piston , the catches being either inoperative during the ascent , or made to act upon ratchets disposed in the contrary direction , - appear to have been the instruments ; but in 1780 the ratchet work ...
Página 26
... distance over the centre , when the valve is closed and the gravity of the weights thus tending to keep the valves closed firmly after the manner of a tumbler . The levers and rods , it will be observed , are in the same straight line ...
... distance over the centre , when the valve is closed and the gravity of the weights thus tending to keep the valves closed firmly after the manner of a tumbler . The levers and rods , it will be observed , are in the same straight line ...
Página 36
... distance , for any given distance measured on the circle described by the crank pin . Since , then , the velocity of rotation of the crank is nearly uniform , it will follow that the piston will move very slowly as it approaches the end ...
... distance , for any given distance measured on the circle described by the crank pin . Since , then , the velocity of rotation of the crank is nearly uniform , it will follow that the piston will move very slowly as it approaches the end ...
Términos y frases comunes
air pump applied atmosphere axis axle bars beam blast pipe body boiler bolts bottom Boulton and Watt brass cast iron centre chimney coal cock column compression condenser connecting rod constructed crank crank pin cross head cubic feet cylinder distance eccentric elastic force employed equal expansion experiments feet per second fire box flange flue fly-wheel foot formula frame friction furnace given heating surface hole horizontal horse power inches diameter inches of mercury increased length lever locomotive means mechanical Messrs metal minute moving multiplied paddle pass piston rod placed plate pressure proportion quantity radius raised represented resistance revolutions per minute revolving ring rivets screw shaft side side rod slide valve smoke specific heat speed spindle square inch steam engine steam pipe steam vessels steamer stroke stuffing box teeth temperature thick tubes vapour velocity vertical Watt's weight wheel
Pasajes populares
Página 8 - I have seen the water run like a constant fountain stream forty feet high ; one vessel of water rarefied by fire driveth up forty of cold water. And a man that tends the work is but to turn two cocks, that one vessel of water being consumed, another begins to force and re-fill with cold water, and so successively, the fire being tended and kept constant, which the self-same person may likewise abundantly perform in the interim between the necessity of turning the said cocks.
Página 7 - ... stopping and screwing up the broken end, as also the touch-hole, and, making a constant fire under it, within twenty-four hours it burst, and made a great crack...
Página 36 - ... turn, but readily and quietly took up whatever was presented by those around him, and astonished the idle and barren propounders of an ordinary theme, by the treasures which he drew from the mine they had unconsciously opened.
Página 16 - I call the steam vessel, must during the whole time the engine is at work be kept as hot as the steam that enters it, first, by enclosing it in a case of wood, or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated bodies; and thirdly, by suffering neither water or any other substance colder than the steam to enter or touch it during that time.
Página 8 - ... to keep them sweet, running through several streets, and so performing the work of scavengers, as well as furnishing the inhabitants with sufficient water for their private occasions...
Página 80 - ... charcoal that burned without flame, was blown up to whiteness by an explosive mixture containing the fire-damp, without producing its inflammation. An iron rod at the highest degree of red heat, and at the common degree of white heat, did not inflame explosive mixtures of the fire-damp ; but, when in brilliant combustion, it produced the effect.
Página 25 - I considered how to produce rotative motions from them in the best manner ; and amongst various schemes which were subjected to trial, or which passed through my mind, none appeared so likely to answer the purpose as the application of the crank in the manner of the common turning-lathe (an invention of great merit, of which the humble inventor, and even its era, are unknown).
Página 200 - Let 17 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches.
Página 16 - ... first, that vessel in which the powers of steam are to be employed to work the engine, which is called the cylinder...
Página 36 - ... 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 for making all things plain, clear, and intelligible, that scarcely any one could be aware of such a deficiency in his presence. His talk too, though overflowing with information, had no resemblance to lecturing or solemn discoursing ; but, on the contrary, was full of colloquial spirit and pleasantry.