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 29
... direction to the chains of the piston and pump - rods , which are sus- pended at the opposite ends . N , the jack - head pump , which is a smaller sucking pump , wrought by a small lever or working beam , by means of a chain connected ...
... direction to the chains of the piston and pump - rods , which are sus- pended at the opposite ends . N , the jack - head pump , which is a smaller sucking pump , wrought by a small lever or working beam , by means of a chain connected ...
Σελίδα 46
... direction as the first ; and thus the two communicate a continuous rotatory motion to the axis upon which they are placed , which is thence transmitted by a large toothed wheel to a smaller wheel or pinion , on the shaft of which is a ...
... direction as the first ; and thus the two communicate a continuous rotatory motion to the axis upon which they are placed , which is thence transmitted by a large toothed wheel to a smaller wheel or pinion , on the shaft of which is a ...
Σελίδα 57
... directions , so that they correct each other ; for when the end ƒ of ef is at any given distance from the perpendicular line g h , the lower point e of eƒ is drawn the same distance from the perpendicular in the contrary direction ; and ...
... directions , so that they correct each other ; for when the end ƒ of ef is at any given distance from the perpendicular line g h , the lower point e of eƒ is drawn the same distance from the perpendicular in the contrary direction ; and ...
Σελίδα 59
... direction . It was covered at the top like the double engine , but , instead of having the steam and vacuum to aid it in both ascent and descent , the vacuum was only used in the descending stroke of the piston , whilst the ascending ...
... direction . It was covered at the top like the double engine , but , instead of having the steam and vacuum to aid it in both ascent and descent , the vacuum was only used in the descending stroke of the piston , whilst the ascending ...
Σελίδα 60
... direction was reversed . This gave way to the parallel motion , one of the brightest thoughts which ever occurred to Mr. Watt . Another difficulty was the irregular motion of the engine , which was subject to considerable variation in ...
... direction was reversed . This gave way to the parallel motion , one of the brightest thoughts which ever occurred to Mr. Watt . Another difficulty was the irregular motion of the engine , which was subject to considerable variation 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