Report on Machinery and Processes of the Industrial Arts and Apparatus of the Exact SciencesVan Nostrand, 1869 - 669 páginas |
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Página 4
... observe the same general form and substantially the same modes of operation , though with many variations in the manner and succession of movements and in the relative position of the tool and the material operated upon . Another ...
... observe the same general form and substantially the same modes of operation , though with many variations in the manner and succession of movements and in the relative position of the tool and the material operated upon . Another ...
Página 16
... observe how , in the infancy of a great invention , conceptions which are perfectly just , struggle painfully and often for a long time abortively , to embody them- selves into form . And it is sad as well as interesting to observe what ...
... observe how , in the infancy of a great invention , conceptions which are perfectly just , struggle painfully and often for a long time abortively , to embody them- selves into form . And it is sad as well as interesting to observe what ...
Página 17
... observe how powerful has been the influence upon the history of productive industry of discoveries like these , coming unlooked for and unappreciated when made , but possessing , nevertheless , a potential value , in comparison with ...
... observe how powerful has been the influence upon the history of productive industry of discoveries like these , coming unlooked for and unappreciated when made , but possessing , nevertheless , a potential value , in comparison with ...
Página 25
... OBSERVATIONS . Force being the first necessity in all industries , it is natural that the agencies designed to furnish motive power should receive the first atten- tion . The steam - engine , in its several forms fixed and movable ...
... OBSERVATIONS . Force being the first necessity in all industries , it is natural that the agencies designed to furnish motive power should receive the first atten- tion . The steam - engine , in its several forms fixed and movable ...
Página 34
... observed that the difficulty of guarding against losses by conduction and radiation is enormously increased when excessive tem- peratures are employed ; and also that such temperatures decompose lubricants , destroy packing , and , by ...
... observed that the difficulty of guarding against losses by conduction and radiation is enormously increased when excessive tem- peratures are employed ; and also that such temperatures decompose lubricants , destroy packing , and , by ...
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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.