 ... obtain the maximum power by working expansively. But to obtain the greatest useful effect, the full pressure will require to be continued longer; and to an extent which depends on the quantity of friction of the additional machinery necessary to produce...  The Proportions and Movement of Slide Valves - Página 4por William Dyson Wansbrough - 1903 - 160 páginasVista completa - Acerca de este libro
 | Thomas Tredgold - 1825 - 218 páginas
...friction of the additional machinery necessary to produce the useful effect. An engine ought to be made so that the communication between the cylinder and boiler could be cut off at any part of the stroke, from the one given in the table to full pressure, at the pleasure of the attendant, or according to... | |
 | Thomas Tredgold - 1825 - 260 páginas
...friction of the additional machinery necessary to produce the useful effect. An engine ought to be made so that the communication between the cylinder and boiler could be cut off at any part of the stroke, from the one given in the table to full pressure, at the pleasure of the attendant, or according to... | |
 | Perry Fairfax Nursey - 1843 - 678 páginas
...begin to manifest themselves ; but in our patent engines, with our patent apparatus, the steam may be cut off at, any part of the stroke at the pleasure of the driver; it may be altered too, while running, and it is admitted or cut off when the piston has scarce... | |
 | 1844 - 950 páginas
...enumerated, begin to manifest themselves; but in our patent engines, with our patent apparatus, the steam may be cut off at any part of the stroke at the pleasure of the driver ; it may be altered too while running, and it is admitted, or cut off, when the piston has scarce... | |
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