History and Progress of the Steam Engine: With a Practical Investigation of Its Structure and ApplicationT. Kelly, 1836 - 863 σελίδες |
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Σελίδα 11
... pressure , which could be re- quired for raising water to a given height , because the pressure in such a boiler will never exceed the weight. WORCESTER'S ENGINE . 11.
... pressure , which could be re- quired for raising water to a given height , because the pressure in such a boiler will never exceed the weight. WORCESTER'S ENGINE . 11.
Σελίδα 24
... pressure , and prevents explosion . c is the cylinder , open at the top , having three holes at the bot- tom , def . The hole e admits the steam from the boiler ; the hole d admits a jet of cold water from the reservoir g , in order to ...
... pressure , and prevents explosion . c is the cylinder , open at the top , having three holes at the bot- tom , def . The hole e admits the steam from the boiler ; the hole d admits a jet of cold water from the reservoir g , in order to ...
Σελίδα 25
... pressure of one or two pounds on the inch on the boiler was sufficient to work the engine . The power must be regulated by the area of the piston , because as the pressure of the air sel- dom exceeds 14 lbs . on an inch in a given area ...
... pressure of one or two pounds on the inch on the boiler was sufficient to work the engine . The power must be regulated by the area of the piston , because as the pressure of the air sel- dom exceeds 14 lbs . on an inch in a given area ...
Σελίδα 27
... pressure of 10.4 lbs . per inch . Thus , area of piston ( eighteen inches diameter ) 254 ; weight of the column of water , thirty - six feet in the pumps , eighteen inches diameter , 3960 lbs . ; of which take six - ninths for the ...
... pressure of 10.4 lbs . per inch . Thus , area of piston ( eighteen inches diameter ) 254 ; weight of the column of water , thirty - six feet in the pumps , eighteen inches diameter , 3960 lbs . ; of which take six - ninths for the ...
Σελίδα 34
... pressure on the surface of the water in the injection cistern , and therefore the water spouts rapidly through the holes d , by the joint action of the column P , and the unbalanced pressure of the atmosphere ; at the same time the ...
... pressure on the surface of the water in the injection cistern , and therefore the water spouts rapidly through the holes d , by the joint action of the column P , and the unbalanced pressure of the atmosphere ; at the same time the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
admitted aperture apparatus applied atmosphere attached axis axle bars beam boiler bottom carriage cause centre chimney circular coal cock communication condenser connected connecting rod construction crank cylinder descend described diameter eduction effect elastic equal escape expansion experiments feet fire fixed flue fluid fly-wheel force friction fuel furnace groove heat hole hollow horizontal improvements inch inches of mercury inclined plane injection invention iron Jacob Perkins latent heat lever Liverpool London lower machine machinery means metal moving packing paddle-wheel paddles pass passage patent piston rod placed plate pounds pressure prevent produced propelling pump purpose quantity rail rail-way represents revolving ring Rotary Engine rotatory round screwed shaft shut side sliders sliding smoke space steam boats steam engine steam pipe stroke stuffing box supply surface temperature tion tube turned upper vacuum valve vapour velocity vertical Watt weight wheel
Δημοφιλή αποσπάσματα
Σελίδα 85 - 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. In cases where cold water cannot be had in plenty, the engines may be wrought by this force of steam only, by discharging the steam into the open air, after it has done its office.
Σελίδα 95 - I employ the steam, after it has acted in the first vessel, to operate a second time in the other, by permitting it to expand itself, which I do by connecting the vessels together, and forming proper channels and apertures, whereby the steam shall occasionally go in and out of the said vessels.
Σελίδα 9 - ... hours it burst and made a great crack ; so that, having a way to make my vessels so that they are strengthened by the force within them, and...
Σελίδα 48 - Papin's digester, and formed a species of steam-engine by fixing upon it a syringe, one-third of an inch diameter, with a solid piston, and furnished also with a cock to admit the steam from the digester, or shut it off at pleasure, as well as to open a communication from the inside of the syringe to the open air, by which the steam contained in the syringe might escape. When the communication between the digester and syringe was opened, the steam entered the syringe, and by its action upon the piston...
Σελίδα 594 - Liverpool, setting forth that they considered " the present establishments for the transport of goods quite inadequate, and that a new line of conveyance has become absolutely necessary to conduct the increasing trade of the country with speed, certainty, and economy.
Σελίδα 770 - Commons was appointed in 1819, "to inquire how far it might be practicable to compel persons using steam engines and furnaces in their different works, to erect them in a manner less prejudicial to public health and comfort, and to report their observations thereupon to the House.
Σελίδα 761 - Lastly, be it remembered, that my said new invention consists only in the method of consuming the smoke, and increasing the heat, by causing the smoke and flame of the fresh fuel to pass through very hot funnels or pipes, or among, through, or near, fuel which is intensely hot, and which has ceased to smoke ; and by mixing it with fresh air when in these circumstances...
Σελίδα 9 - 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.
Σελίδα 48 - ... (15 Ibs.) with which it was loaded. When this was raised as high as was thought proper, the communication with the digester was shut , and that with the atmosphere opened ; the steam then made its escape, and the weight descended. The operations were repeated, and though in this experiment the cock was turned by hand, it was easy to see how it could be done by the machine itself, and to make it work with perfect regularity.
Σελίδα 604 - The engine to be delivered complete for trial, at the Liverpool end of the railway, not later than the 1st. of October next. " 8th. — The price of the engine which may be accepted, not to exceed ^550. delivered on the railway; and any engine not approved, to be taken back by the owner. " NB — The Railway Company will provide the engine tender with a supply of water and fuel for the experiment. The distance within the rails is four feet eight inches and a half.