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 18
... effect of enabling ngenious mechanics to direct their energies to a subject which had hitherto been a matter of mere philosophical speculation . It furnished material for study ; and , though it was adopted with caution , and to a very ...
... effect of enabling ngenious mechanics to direct their energies to a subject which had hitherto been a matter of mere philosophical speculation . It furnished material for study ; and , though it was adopted with caution , and to a very ...
Σελίδα 43
... piston will be smaller in the same proportion as the force is increased , in order to produce a given effect ; therefore , the edges of the piston being reduced also , there will be less ECONOMY OF HIGH - PRESSURE ENGINES . 43.
... piston will be smaller in the same proportion as the force is increased , in order to produce a given effect ; therefore , the edges of the piston being reduced also , there will be less ECONOMY OF HIGH - PRESSURE ENGINES . 43.
Σελίδα 48
... effect . " My attention , " says he , " was first directed , in 1759 , to the subject of steam engines , by Dr. Robison , then a student in the University of Glasgow , and nearly of my own age . Robison at that time threw out the idea ...
... effect . " My attention , " says he , " was first directed , in 1759 , to the subject of steam engines , by Dr. Robison , then a student in the University of Glasgow , and nearly of my own age . Robison at that time threw out the idea ...
Σελίδα 62
... effect is more than half that which would have been produced by the cylinder full of steam . Thus the sum of all the numbers which express the action of the steam , taken at twenty different places in the descent , is 11.583 ; whilst ...
... effect is more than half that which would have been produced by the cylinder full of steam . Thus the sum of all the numbers which express the action of the steam , taken at twenty different places in the descent , is 11.583 ; whilst ...
Σελίδα 64
... effect may be obtained , acts against a moveable piston in a cylinder from which it cannot escape . This piston is , as has been explained , packed or stuffed on its edges , which prevents the steam from escaping past it ; and from the ...
... effect may be obtained , acts against a moveable piston in a cylinder from which it cannot escape . This piston is , as has been explained , packed or stuffed on its edges , which prevents the steam from escaping past it ; and from the ...
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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