Report on Machinery and Processes of the Industrial Arts and Apparatus of the Exact SciencesVan Nostrand, 1869 - 669 páginas |
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Página 12
... angles of forty - five degrees , so as to reduce the terminal surfaces to the dimensions of about a quarter of an inch square . The lateral edges are also rounded , in order to facilitate the manipula- tion . It rests on a rectangular ...
... angles of forty - five degrees , so as to reduce the terminal surfaces to the dimensions of about a quarter of an inch square . The lateral edges are also rounded , in order to facilitate the manipula- tion . It rests on a rectangular ...
Página 13
... angles to its surface , it glides over the inferior plate more smoothly than if it were resting upon ice . This is because there is included between the two a cushion of air , which , how- ever thin , serves to reduce , or as it might ...
... angles to its surface , it glides over the inferior plate more smoothly than if it were resting upon ice . This is because there is included between the two a cushion of air , which , how- ever thin , serves to reduce , or as it might ...
Página 14
... angles to each other , from a mass of twenty - seven tons , which in the operation has become reduced to fifteen ; or the similar shaft exhibited by Messrs . Petin & Gaudet , of France ; or the fifty - ton steel gun of the first - named ...
... angles to each other , from a mass of twenty - seven tons , which in the operation has become reduced to fifteen ; or the similar shaft exhibited by Messrs . Petin & Gaudet , of France ; or the fifty - ton steel gun of the first - named ...
Página 41
... angle to each other of seven degrees . The escape valve is placed at D , and kept in position by the spring d . A cam D ' , acting on this valve through the lever D " , opens it just before the driving piston commences its descent at ...
... angle to each other of seven degrees . The escape valve is placed at D , and kept in position by the spring d . A cam D ' , acting on this valve through the lever D " , opens it just before the driving piston commences its descent at ...
Página 87
... angles to the axis . It will be seen by comparing these figures that there are two pairs of pis- tons , each pair being attached to a core which occupies but half the General Morin , in a passage in his treatise , " Des Machines et ...
... angles to the axis . It will be seen by comparing these figures that there are two pairs of pis- tons , each pair being attached to a core which occupies but half the General Morin , in a passage in his treatise , " Des Machines et ...
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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
Pasajes populares
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.