Machinery and Processes of the Industrial Arts: And Apparatus of the Exact SciencesU.S. Government Printing Office, 1869 - 669 páginas |
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Página 4
... position of the tool and the material operated upon . Another illustration might be found in the important art of printing . Since the origin of this art in the memorable invention by which impressions were first taken from movable type ...
... position of the tool and the material operated upon . Another illustration might be found in the important art of printing . Since the origin of this art in the memorable invention by which impressions were first taken from movable type ...
Página 12
... position by its arms , which rest on supports on each side . As the screw advances in the operation of measurement , the plate has less and less freedom of space , until at length it appears to be in actual contact with both screw and ...
... position by its arms , which rest on supports on each side . As the screw advances in the operation of measurement , the plate has less and less freedom of space , until at length it appears to be in actual contact with both screw and ...
Página 36
... position , say one - third advanced down the cylinder , the piston C being further advanced still , and let the valve of B be secured by a strong spring pressing upon it , so that it cannot be opened without the application of some ...
... position , say one - third advanced down the cylinder , the piston C being further advanced still , and let the valve of B be secured by a strong spring pressing upon it , so that it cannot be opened without the application of some ...
Página 38
... positions of the driving crank on the main shaft at different periods of the revolution ; putting zero to represent the position of the crank when the piston A is about to commence its negative stroke . The second column gives the ...
... positions of the driving crank on the main shaft at different periods of the revolution ; putting zero to represent the position of the crank when the piston A is about to commence its negative stroke . The second column gives the ...
Página 41
... 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 the end of the positive stroke . The furnace is enclosed in the iron box G , the grate ...
... 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 the end of the positive stroke . The furnace is enclosed in the iron box G , the grate ...
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Términos y frases comunes
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.