Report on Machinery and Processes of the Industrial Arts and Apparatus of the Exact SciencesVan Nostrand, 1869 - 669 páginas |
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Página 21
... turn our attention to the novelties presented in the Exposition of 1867 , we shall be led to infer- 1. That the number of inventions entitled to be called new in the sense that they are here first made known or first publicly exhibited ...
... turn our attention to the novelties presented in the Exposition of 1867 , we shall be led to infer- 1. That the number of inventions entitled to be called new in the sense that they are here first made known or first publicly exhibited ...
Página 37
... turning on a fixed centre of motion at their extremities , and kept in motion by the engine . The rod of the external piston , A , which is the driving piston , is also connected with an upright oscillating lever , turning on an axis of ...
... turning on a fixed centre of motion at their extremities , and kept in motion by the engine . The rod of the external piston , A , which is the driving piston , is also connected with an upright oscillating lever , turning on an axis of ...
Página 50
... turn the fly - wheel for a few revolutions by hand . And it is also neces- sary that the fire shall be well lighted before the door of the ash - pit is closed . The peculiar merit of this engine is such an arrangement of parts as to ...
... turn the fly - wheel for a few revolutions by hand . And it is also neces- sary that the fire shall be well lighted before the door of the ash - pit is closed . The peculiar merit of this engine is such an arrangement of parts as to ...
Página 55
... turn the shaft will be opposed to each other . These efforts being necessarily equal , and acting at equal distances from the centre of motion , will neutralize each other , and , for a moment , the effective force will be zero . When ...
... turn the shaft will be opposed to each other . These efforts being necessarily equal , and acting at equal distances from the centre of motion , will neutralize each other , and , for a moment , the effective force will be zero . When ...
Página 56
... turn it to account by indirect means . The expedient which appeared to them most promising was to use it for the purpose of creating a vacuum . In fact , if a comparatively small charge of gunpowder be exploded in a closed vessel ...
... turn it to account by indirect means . The expedient which appeared to them most promising was to use it for the purpose of creating a vacuum . In fact , if a comparatively small charge of gunpowder be exploded in a closed vessel ...
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advantage amount angle apparatus applied armature atmosphere axis Bessemer process boiler calories carried cent centimetres circumference compression construction contrivance crank cubic metres cylinder diameter direction discharge disk distance effect electric employed engine equal exhibited experiments Exposition extremity feet force furnace furnished glass half heat horizontal horse-power hundred hydraulic hydraulic head illustrated inches increased instrument introduced invention inventor iron kilograms kilometres latent heat length lever light light-houses liquid machine manufacture means mechanical ment Messrs metal metres millimetres mode motion movable types movement necessary object observed operation ordinary Paris passes piston plate position pounds practical present pressure prism produced pulley pump purpose refrigerator reservoir revolution roller rotary engine rotation screw sextant shaft side Siemens space spherometer steam steam-engine steel surface telescope temperature tion tonometer tube turbine turn valve vapor velocity vertical vessel weight wheel Wicklow Head
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Página 31 - B with the sound velocity where y is the ratio of the specific heat at constant pressure to the specific heat at constant volume, and p is the gas pressure.