Treatise on Mills and Millwork: On the principles of mechanism and on the prime moversLongmans, Green and Company, 1871 |
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Página 13
... by the number of rotations which they perform in a given time . Thus , let ʼn be the number of revolutions performed per min . , the other notation being the same as in Art . 6 ; then 1 30 v v = ... πηγ ( 1 ) , and n = ... ( 2 ) . 30 Πη ...
... by the number of rotations which they perform in a given time . Thus , let ʼn be the number of revolutions performed per min . , the other notation being the same as in Art . 6 ; then 1 30 v v = ... πηγ ( 1 ) , and n = ... ( 2 ) . 30 Πη ...
Página 41
... revolutions per min . and A only 40 . 8 Here by eq . ( 3 ) , n 40 = = ; 105 21 that is , B will contain 8 teeth and a 21 teeth . The form which must be given to the teeth of wheels , so as to maintain a perfect rolling contact , will be ...
... revolutions per min . and A only 40 . 8 Here by eq . ( 3 ) , n 40 = = ; 105 21 that is , B will contain 8 teeth and a 21 teeth . The form which must be given to the teeth of wheels , so as to maintain a perfect rolling contact , will be ...
Página 147
... revolutions per minute . Rack shaft , from 0.0314 to 0.058 revolutions per minute . There is usually a worm on the shaft a a , working into a wheel on a cross shaft ; on the cross shaft a second worm working into a wheel on the rack ...
... revolutions per minute . Rack shaft , from 0.0314 to 0.058 revolutions per minute . There is usually a worm on the shaft a a , working into a wheel on a cross shaft ; on the cross shaft a second worm working into a wheel on the rack ...
Página 161
... per minute , giving 63 revolutions of a horizontal shaft to which it is geared 3 to 1 . To this shaft was attached a ... per second . Hence the theoretical power = 7 · 468 × 62 · 5 × 9.34 × 60 = 261,537 foot - pounds per minute , = 7.92 ...
... per minute , giving 63 revolutions of a horizontal shaft to which it is geared 3 to 1 . To this shaft was attached a ... per second . Hence the theoretical power = 7 · 468 × 62 · 5 × 9.34 × 60 = 261,537 foot - pounds per minute , = 7.92 ...
Página 164
... revolutions per minute . Another form of turbine , in which the flow is horizontally Fig . 132 . outwards , has been made to some extent in this country by Messrs . Whitelaw and Stirrat , and is sometimes called the Scotch turbine or ...
... revolutions per minute . Another form of turbine , in which the flow is horizontally Fig . 132 . outwards , has been made to some extent in this country by Messrs . Whitelaw and Stirrat , and is sometimes called the Scotch turbine or ...
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Treatise on Mills and Mill Work: On the principles of mechanism and on prime ... Sir William Fairbairn Visualização integral - 1861 |
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angle arms arrangement atmosphere axes axis boiler buckets calculated called carried centre close column connected constant construction crank Crown 8vo cubic feet cylinder diameter direction discharge distance Edition effect employed engine equal experiments fall fixed foot force formula friction given gives Head heat Hence History Illustrations improved inches increased introduced iron length machine manufacture means mechanism mercury mill minute motion move nearly necessary obtained orifice passing pipe placed plate position practice present pressure principle produced quantity ratio represents reservoir revolving river sails screw shaft shown side space square steam stroke supply surface teeth temperature tion tube turbine units valve varying velocity vertical vols volume weight wheel whole wind Woodcuts
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