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 24
... necessary that some means should be adopted to aid it in its ascent . This is done by means of the weight or counterpoise l , so that by the force of the steam and gravity of the counterpoise , the piston is eleva- ted to the top of the ...
... necessary that some means should be adopted to aid it in its ascent . This is done by means of the weight or counterpoise l , so that by the force of the steam and gravity of the counterpoise , the piston is eleva- ted to the top of the ...
Σελίδα 25
... necessary to obtain the changes of the cocks ; the uncertainty arising from the employment of boys was likewise a matter of much vexation and inconve- nience . This evil , however , produced its own remedy ; for a boy , named Humphrey ...
... necessary to obtain the changes of the cocks ; the uncertainty arising from the employment of boys was likewise a matter of much vexation and inconve- nience . This evil , however , produced its own remedy ; for a boy , named Humphrey ...
Σελίδα 26
... necessary motion . This he called a " scogger . " With this addition , Newcomen's engine approached very nearly to a self - acting one ; but still the turning of cocks and filling of reservoirs was obliged to be in part left to careless ...
... necessary motion . This he called a " scogger . " With this addition , Newcomen's engine approached very nearly to a self - acting one ; but still the turning of cocks and filling of reservoirs was obliged to be in part left to careless ...
Σελίδα 39
... necessary to suck in the steam , the moving force during the ascent of the piston must be considered as resulting chiefly , if not solely , from the preponderating weight of the great pump rods ; and this force is expended partly in ...
... necessary to suck in the steam , the moving force during the ascent of the piston must be considered as resulting chiefly , if not solely , from the preponderating weight of the great pump rods ; and this force is expended partly in ...
Σελίδα 65
... necessary appendages of machinery , a piston , connecting rod , paral- lel motion , and pump buckets , have to be reversed at each stroke of the engine , and that , too , when the speed is very great . The natural state of rest , or vis ...
... necessary appendages of machinery , a piston , connecting rod , paral- lel motion , and pump buckets , have to be reversed at each stroke of the engine , and that , too , when the speed is very great . The natural state of rest , or vis ...
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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