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 4
... foot high an incredible quantity of water , even two foot diameter , so naturally , that the work will not be heard into the next room , and with so great ease and geometrical symmetry , though it work day and night from one end of the ...
... foot high an incredible quantity of water , even two foot diameter , so naturally , that the work will not be heard into the next room , and with so great ease and geometrical symmetry , though it work day and night from one end of the ...
Página 6
... foot , so you may be certain it is replenished one foot of course . " Also , to know when the great boiler wants replenishing or not , you need only turn the gauge - cock N , and if water come out there is no need to replenish it , but ...
... foot , so you may be certain it is replenished one foot of course . " Also , to know when the great boiler wants replenishing or not , you need only turn the gauge - cock N , and if water come out there is no need to replenish it , but ...
Página 9
... foot high per minute , or ÷ by 33,000 = 966 HP . The con- sumption of coals per hour was 55 lbs .: a bushel , therefore , or 84 lbs . would suffice for 91.6 minutes , which is equivalent to 2.92 millions of pounds raised one foot high ...
... foot high per minute , or ÷ by 33,000 = 966 HP . The con- sumption of coals per hour was 55 lbs .: a bushel , therefore , or 84 lbs . would suffice for 91.6 minutes , which is equivalent to 2.92 millions of pounds raised one foot high ...
Página 14
... foot high by the consumption of 112 lbs . of Wednesbury coals , which is equivalent to about 234 millions of pounds raised one foot high by a bushel or 84 lbs . Their early engines , however , scarcely accom- plished this : for two of ...
... foot high by the consumption of 112 lbs . of Wednesbury coals , which is equivalent to about 234 millions of pounds raised one foot high by a bushel or 84 lbs . Their early engines , however , scarcely accom- plished this : for two of ...
Página 15
... foot of air of the atmospheric density be compressed into the compass of half a cubic foot , its elas- ticity will be increased from 15 lbs . on the square inch to 30 lbs . on the square inch ; whereas if its volume be enlarged to two ...
... foot of air of the atmospheric density be compressed into the compass of half a cubic foot , its elas- ticity will be increased from 15 lbs . on the square inch to 30 lbs . on the square inch ; whereas if its volume be enlarged to two ...
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.