MechanismLongmans, Green, and Company, 1905 - 408 страници |
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Страница 19
... angle turned through measured on a transverse plane . In practice the thread must be of finite dimensions , and takes the form of a bearing surface as shown in Fig . 21 . That sur- face is such that all cylinders co - axial with the ...
... angle turned through measured on a transverse plane . In practice the thread must be of finite dimensions , and takes the form of a bearing surface as shown in Fig . 21 . That sur- face is such that all cylinders co - axial with the ...
Страница 24
... angle of " lapping " on either pulley , so that has the meaning ascribed to it in the figure . If B and C be the points where the belt leaves one pulley and is received by the other , the length , l , of belt is given by- 7 = 2 ( arc AB ...
... angle of " lapping " on either pulley , so that has the meaning ascribed to it in the figure . If B and C be the points where the belt leaves one pulley and is received by the other , the length , l , of belt is given by- 7 = 2 ( arc AB ...
Страница 25
... angle of lapping on the larger pulley , and ( π 20 ) that on the smaller pulley ( Fig . 29 ) , the length of the belt is given by— 1 = 2 2 { ( + 0 ) + ( − 0 ) 2 + √ / d2 − ( 1 − r ) 2 } π = 2 2 since sin 0 = - · ( 5 2 - ( r1 + r2 ) ...
... angle of lapping on the larger pulley , and ( π 20 ) that on the smaller pulley ( Fig . 29 ) , the length of the belt is given by— 1 = 2 2 { ( + 0 ) + ( − 0 ) 2 + √ / d2 − ( 1 − r ) 2 } π = 2 2 since sin 0 = - · ( 5 2 - ( r1 + r2 ) ...
Страница 27
... angle , the belt will again lie flat on the pulley , but will have been dis- placed through the distance AB to the right . Had the pressure been applied to the retreating side of the belt , this effect would not have been produced ...
... angle , the belt will again lie flat on the pulley , but will have been dis- placed through the distance AB to the right . Had the pressure been applied to the retreating side of the belt , this effect would not have been produced ...
Страница 36
... angle of inclination of the plies , and , to a less extent , upon the diameter of the pulleys . Thus , consider the ... angles between the directions of the cord and the line of motion of the block , which in this case is vertical . With ...
... angle of inclination of the plies , and , to a less extent , upon the diameter of the pulleys . Thus , consider the ... angles between the directions of the cord and the line of motion of the block , which in this case is vertical . With ...
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actuating addendum circle angle angular velocity angular-velocity ratio arc of approach attached axis B.Sc belt bevel wheel block centripetal acceleration circular arc common normal connecting rod connecting-rod coupler crank arm crank pin crank radius crank shaft crosshead Crown 8vo curve cutter cutting cycloidal cylinder described diameter direction displacement distance draw driving ELEMENTARY ellipse engine equal equivalent crank fixed centre gear horizontal Illustrations intersect involute keyed kinematic lathe leading screw length lever line of centres line of stroke machine mandrel mean position meshes move number of teeth obliquity obtained oscillating P₁ P₁A P₂ parallel motion perpendicular pinion piston pitch circle pitch point plane pulley rack radii reciprocating piece relative represent the velocity revolution revolutions per minute roller rolling circle shape shown in Fig sliding slot spindle spur wheel straight line tool tooth trace transmitted turning pairs valve velocity diagram velocity ratio vertical whilst worm wheel
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