A Manual of the Steam EngineScott, Webster and Geary, 1842 - 293 pages |
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Page xiii
... pounds - by atmospheres Safety Valves : Lever Valve ; Spring Valve Fusible Plugs ; Fusible Metal • Extent of Surface of Steam Boilers Mercurial Steam Gauge Capacity of Steam Boilers Spherical Form of Boiler ; Waggon Boiler Cylindrical ...
... pounds - by atmospheres Safety Valves : Lever Valve ; Spring Valve Fusible Plugs ; Fusible Metal • Extent of Surface of Steam Boilers Mercurial Steam Gauge Capacity of Steam Boilers Spherical Form of Boiler ; Waggon Boiler Cylindrical ...
Page 4
... pound of water at 32 ° , and a pound of ice at 32 ° , is , that the former contains , in a latent state , as much more heat than the latter , as would suffice to heat another pound of water a hundred and forty degrees . The heat which ...
... pound of water at 32 ° , and a pound of ice at 32 ° , is , that the former contains , in a latent state , as much more heat than the latter , as would suffice to heat another pound of water a hundred and forty degrees . The heat which ...
Page 7
... pounds on each square inch of the surface of the earth , and of all bodies upon it . We accordingly find that water boils at lower degrees of temperature , as we ascend higher from the surface of the earth , the pressure of the ...
... pounds on each square inch of the surface of the earth , and of all bodies upon it . We accordingly find that water boils at lower degrees of temperature , as we ascend higher from the surface of the earth , the pressure of the ...
Page 9
... pounds ; this pressure being quite independent of the weight of the air . Hence the lateral , oblique , and upright ... pound , or very nearly so , the weight of two cubic inches of mercury being exactly 15'68 oz . , or 0.98 lb. 4. The ...
... pounds ; this pressure being quite independent of the weight of the air . Hence the lateral , oblique , and upright ... pound , or very nearly so , the weight of two cubic inches of mercury being exactly 15'68 oz . , or 0.98 lb. 4. The ...
Page 14
... pounds to a height of 1700 inches , or 142 feet . 2. It is evident that , to raise fifteen pounds to a height of 142 feet , is the same thing as to raise 142 times fifteen pounds , that is , 2130 pounds , or nearly a ton weight , to a ...
... pounds to a height of 1700 inches , or 142 feet . 2. It is evident that , to raise fifteen pounds to a height of 142 feet , is the same thing as to raise 142 times fifteen pounds , that is , 2130 pounds , or nearly a ton weight , to a ...
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Autres éditions - Tout afficher
Expressions et termes fréquents
action air-pump amount apparatus ascent Atmospheric Engine atmospheric pressure axle beam blast pipe boiler boiling carriages chimney cistern coal cock cold water combustion common condenser connecting-rod construction contrivance Cornish engines crank cubic foot cylinder descending described diameter double acting engine effect elastic force employed evaporating expansion feet flues fly-wheel force of steam fuel fusible plug heat high-pressure engine horse power inches of mercury increased injection latent heat lever Liverpool load locomotive engine lower machinery means mercury metal miles an hour miles per hour mode motion moving power Newcomen paddle paddle wheel patent pipe piston piston-rod placed plate pressure of steam produced pump rails railway raised represented resistance Robert Stephenson safety valve Single Acting Engine slide speed square inch steam engine steam tube steam valve steam vessels steam-tight STEPHENSON'S ROCKET stroke supply surface temperature tion tons Tredgold upper vacuum velocity vertical Watt Watt's weight wheels
Fréquemment cités
Page 21 - 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 refill with cold water, and so successively, the fire being tended and kept constant, which the selfsame person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Page 184 - That at this rate they have conveyed upwards of fourteen passengers. 3. That their weight, including engine, fuel, water, and attendants, may be under three tons. 4. That they can ascend and descend hills of considerable inclination with facility and safety, 5. That they are perfectly safe for passengers. 6. That they are not (or need not be, if properly constructed) nuisances to the public. 7. That they will become a speedier and cheaper mode of conveyance than carriages drawn by horses.
Page 38 - Fourthly, 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.
Page 32 - A Description and Draught of a new-invented Machine, for carrying Vessels or Ships out of, or into, any Harbour, Port, or River, against Wind and Tide, or in a calm.
Page 37 - ... it in a case of wood, or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated...
Page 289 - This work engaged the attention of the author for several years, comprises nearly a thousand families, many of them amongst the most ancient and eminent in the kingdom, each carried down to its representative or representatives still existing, with elaborate and minute details of the alliances, achievements, and fortunes, generation after generation, from the earliest to the latest period. CALTON'S (R. Bell) Annals and Legends of Calais, with Sketches of Emigre' Notabilities, and Memoirs of Lady...
Page 37 - ... first, that vessel in which the powers of steam are to be employed to work the engine, which is called the cylinder...
Page 293 - SCIENTIFIC DIALOGUES ; intended for the Instruction and Entertainment of Young People ; in which the first principles of Natural and Experimental Philosophy are fully explained, by the Rev.
Page 184 - Steam has been applied as a power in draught in two ways: in the one, both passengers and engine are placed on the same carriage; in the other, the engine carriage is merely used to draw the carriage in which the load is conveyed. In either case, the probability of danger from explosion has been rendered infinitely small, from the judicious construction of boiler which has been adopted. " These boilers expose a very considerable surface to the fire, and steam is generated with the greatest rapidity.
Page 38 - ... or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated bodies; and thirdly, by suffering neither water nor any other substance colder than the steam to enter or touch it during that time.