A Treatise on the Steam Engine in Its Application to Mines, Mills, Steam Navigation, and RailwaysLongman, Brown, Green and Longmans, 1853 - 258 páginas |
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Página 11
... larger engines con- structed by Boulton and Watt at that time . Compute the area of the space described by the piston per stroke in cubic feet , and multiply this by the load upon each square inch of the piston in pounds ; 11 ...
... larger engines con- structed by Boulton and Watt at that time . Compute the area of the space described by the piston per stroke in cubic feet , and multiply this by the load upon each square inch of the piston in pounds ; 11 ...
Página 12
... multiplied · 1.7 · 2.1 · 2.4 · 2.6 2.8 · 3 . 3.2 A forty - horse engine , constructed by Mr. Watt about the time of the introduction of his expansive principle , was found to require about 8 lbs . of coal per horse - power per hour when ...
... multiplied · 1.7 · 2.1 · 2.4 · 2.6 2.8 · 3 . 3.2 A forty - horse engine , constructed by Mr. Watt about the time of the introduction of his expansive principle , was found to require about 8 lbs . of coal per horse - power per hour when ...
Página 27
... multiplied by the densities . This is obvious from the definitions , for in bodies of equal magnitudes the quantities of matter are proportional to the densities ; but if the densities are the same , the masses are proportional to the ...
... multiplied by the densities . This is obvious from the definitions , for in bodies of equal magnitudes the quantities of matter are proportional to the densities ; but if the densities are the same , the masses are proportional to the ...
Página 28
... multiplied by the velocities . This is evident , for if the velocities are equal , the momenta are proportional to the masses , a double mass impinging with a double force , a triple mass with a triple force , and so on . And in like ...
... multiplied by the velocities . This is evident , for if the velocities are equal , the momenta are proportional to the masses , a double mass impinging with a double force , a triple mass with a triple force , and so on . And in like ...
Página 29
... multiplied by the time , or it is equal to twice the space divided by the time , or the square root of twice the measure of the power of gravity multiplied by the space fallen in the given time The time of descent in falling bodies is ...
... multiplied by the time , or it is equal to twice the space divided by the time , or the square root of twice the measure of the power of gravity multiplied by the space fallen in the given time The time of descent in falling bodies is ...
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Términos y frases comunes
air-pump applied atmosphere axis axle bars beam blast pipe body boiler bolts bottom Boulton Boulton and Watt brass breadth cast iron centre chimney coal cock column condenser connecting rod Cornish Cornish engines crank cross-head cubic feet cubic foot cylinder in inches depth diameter of cylinder dimensions distance eccentric rod eduction elastic force equal expansion fire fire-box flue fly-wheel furnace gibs and cutter given gravity heating surface horse power inch=1 foot inches of mercury length of stroke lever locomotive engine marine engines means mechanical effect Messrs moving Multiply paddle parallel motion piston rod plate port pressure proportion pump quantity quotient radius revolutions per minute revolving ring rule screw Section shaft side side rod space spindle square inch steam engine steam pipe steam vessels STEAMER stroke suppose temperature thickness tubes vacuum valve velocity Watt weight wheel
Pasajes populares
Página 3 - 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 176 - To shew that the resultant thrust on any plane surface under fluid pressure is equal to the weight of a column of the fluid whose base is the area of the surface and whose height is the depth of the centre of gravity of the surface.
Página 3 - ... which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...
Página 22 - ... 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, but readily and quietly took up whatever was presented by those around...
Página 46 - Watt's rule for the dimensions of the chimney of a land engine is as follows : — multiply the number of pounds of coal consumed under the boiler per hour by 12, and divide the product by the square root of the height of the chimney in feet ; the quotient is the area of the chimney in square inches in the smallest part.
Página 22 - In his temper and dispositions he was not only kind and affectionate, but generous, and considerate of the feelings of all around him, and gave the most liberal assistance and encouragement to all young persons who showed any indications of talent, or applied to him for patronage or advice.
Página 3 - 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 self same person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Página 3 - ... 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 10 - My method of lessening the consumption of steam, and consequently fuel in fire engines, consists of the following principles : first, that vessel in which the powers of steam are to be employed to work the engine, which is called the cylinder in common fire engines, and which I call the steam vessel, must, during the whole time the engine is at work, be kept as hot as the steam...
Página 212 - Multiply the square of the diameter of the cylinder in inches by the length of the stroke in inches, and by 171; and divide the product by the diameter of the driving-wheels in feet.