History and Progress of the Steam Engine: With a Practical Investigation of Its Structure and ApplicationThomas Kelly, 1839 - 859 σελίδες |
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Σελίδα 71
... paddles are placed . By this contrivance , when the crank of one engine is passing the centre and has no power , the other is at its greatest power ; and , thus aiding each other , some- thing like an equality is preserved . But this is ...
... paddles are placed . By this contrivance , when the crank of one engine is passing the centre and has no power , the other is at its greatest power ; and , thus aiding each other , some- thing like an equality is preserved . But this is ...
Σελίδα 72
... paddles act as a kind of fly wheel ; because , if they were suddenly disengaged from the machinery , they would continue to revolve of themselves , so long as the velocity of the stream was less than the velocity of the boat , because ...
... paddles act as a kind of fly wheel ; because , if they were suddenly disengaged from the machinery , they would continue to revolve of themselves , so long as the velocity of the stream was less than the velocity of the boat , because ...
Σελίδα 214
... paddle wheel . With the view of saving fuel , this engine has the Gas Fire applied to it in the following manner : -The boilers are cylindrical , with an inside flue for fuel , two or three are placed closely together , and set in the ...
... paddle wheel . With the view of saving fuel , this engine has the Gas Fire applied to it in the following manner : -The boilers are cylindrical , with an inside flue for fuel , two or three are placed closely together , and set in the ...
Σελίδα 263
... paddles moved as regularly ; and it appeared the power of the engine might be sustained for any length of time by gas , as well as by steam . It was the opinion of most persons present , that the engine answered every pur- pose expected ...
... paddles moved as regularly ; and it appeared the power of the engine might be sustained for any length of time by gas , as well as by steam . It was the opinion of most persons present , that the engine answered every pur- pose expected ...
Σελίδα 264
... paddle - wheel was found to be too small , and deficient in power . A second experiment was made on the river , be- fore the Lords of the Admiralty and a number of scientific men , and the result was such as to confirm their minds in ...
... paddle - wheel was found to be too small , and deficient in power . A second experiment was made on the river , be- fore the Lords of the Admiralty and a number of scientific men , and the result was such as to confirm their minds in ...
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admitted aperture apparatus applied atmosphere attached axis axle bars beam boiler bottom cause centre chimney circular cistern 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 frustrum fuel furnace groove heat hole hollow horizontal improvements inch inches of mercury inclined plane injection invention iron Jacob Perkins lever Liverpool London lower machine machinery means metal motion moving packing paddle-wheel paddles pass 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 steam boats steam carriage steam engine steam pipe stroke stuffing box supply surface temperature tion tube turn upper vacuum valve vapour velocity vertical Watt weight wheel