The Mechanical Principles of Engineering and ArchitectureLongman, Brown, Green, and Longmans, 1855 - 675 стор. |
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Сторінка 78
... arm of the crank ) , the effective pressure upon the arm CB must at certain periods of each revolution exceed the constant resistance opposed to the motion of that arm , and at other periods fall short of it ; so that the resultant of ...
... arm of the crank ) , the effective pressure upon the arm CB must at certain periods of each revolution exceed the constant resistance opposed to the motion of that arm , and at other periods fall short of it ; so that the resultant of ...
Сторінка 234
... crank a pressure in a direction opposite to that which he used in raising it . It is more commonly sup- plied in the ... arm AE of a bent lever PAE , which turns upon a fixed axis or fulcrum at A , and whose arm PA , being prolonged ...
... crank a pressure in a direction opposite to that which he used in raising it . It is more commonly sup- plied in the ... arm AE of a bent lever PAE , which turns upon a fixed axis or fulcrum at A , and whose arm PA , being prolonged ...
Сторінка 369
... crank arm † , an explanation which does not extend to its use in pumping engines , where nevertheless it retains its place ; adding to the expense of construction , and , by its weight , greatly increasing the prejudicial resistances ...
... crank arm † , an explanation which does not extend to its use in pumping engines , where nevertheless it retains its place ; adding to the expense of construction , and , by its weight , greatly increasing the prejudicial resistances ...
Сторінка 370
Henry Moseley. THE CRANK . 260. The modulus of the crank , the direction of the resist- ance being parallel to that of the driving pressures . D E Let CD represent the arm of the crank , and AD the con- necting rod . And to simplify the ...
Henry Moseley. THE CRANK . 260. The modulus of the crank , the direction of the resist- ance being parallel to that of the driving pressures . D E Let CD represent the arm of the crank , and AD the con- necting rod . And to simplify the ...
Сторінка 371
... arm is describing its descending or ascending arc . Whence it fol- lows ... arm is descending or ascending , ( P1 + W1 ) a1 = Pa2 + { P1 ± ( P2 + W ) } p1 sin . 1 . 2 $ 1 . Since moreover the axis c , which ... crank BB 2 THE CRANK . 371.
... arm is describing its descending or ascending arc . Whence it fol- lows ... arm is descending or ascending , ( P1 + W1 ) a1 = Pa2 + { P1 ± ( P2 + W ) } p1 sin . 1 . 2 $ 1 . Since moreover the axis c , which ... crank BB 2 THE CRANK . 371.
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Загальні терміни та фрази
a₁ angle of resistance angular velocity arch axes axis beam body bordering upon motion capstan centre of gravity circumference compression corresponding crank curve cylinder deflexion descend determined dimensions displaced fluid distance ditto driven wheel driving Edition epicycloidal equal equation equilibrium evident exceedingly small extrados force formula friction given hypocycloidal impact inclination inertia intersect involute lamina length limiting angle line of centres line of resistance machine modulus moment of inertia moving numbers of teeth observing obtain oscillation P₁ P₂ parallel passing perpendicular pitch circle plane point of application point of contact portion position radius repre respect resultant revolution revolve rupture screw space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ U₂ unguent vertical vis viva viva vols voussoirs W₁ wall weight whence it follows whilst whole
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