MechanismLongmans, Green, and Company, 1905 - 408 страници |
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Страница 16
... rollers and toothed wheels . Here the two wheels form turning pairs with the frame , and the rollers or teeth , having line contact , constitute a higher pair . A further example of two lower pairs and one higher pair is in belting ...
... rollers and toothed wheels . Here the two wheels form turning pairs with the frame , and the rollers or teeth , having line contact , constitute a higher pair . A further example of two lower pairs and one higher pair is in belting ...
Страница 36
... Rollers and Toothed Wheels . Spur Wheels . The object of friction rollers and toothed wheels is , like belting , to transmit a motion of rotation between two axes , and they also are examples of a mechanism consisting of three pairs ...
... Rollers and Toothed Wheels . Spur Wheels . The object of friction rollers and toothed wheels is , like belting , to transmit a motion of rotation between two axes , and they also are examples of a mechanism consisting of three pairs ...
Страница 37
... rollers , or toothless wheels , as they are sometimes termed , be used , the chain is not self - closed , because the rotatory motion can only be trans- mitted from the one wheel to the second on account of the friction between the two ...
... rollers , or toothless wheels , as they are sometimes termed , be used , the chain is not self - closed , because the rotatory motion can only be trans- mitted from the one wheel to the second on account of the friction between the two ...
Страница 109
... rollers , R , mounted on springs . Engine counters differ in detail , but all consist of either ratchets or one - toothed wheels . ( 3 ) Cross - feed of Planing and Shaping Machines , etc. — We have already pointed out that in a planing ...
... rollers , R , mounted on springs . Engine counters differ in detail , but all consist of either ratchets or one - toothed wheels . ( 3 ) Cross - feed of Planing and Shaping Machines , etc. — We have already pointed out that in a planing ...
Страница 133
... roller pin at P. $ 96 . Crosby Indicator . - As a final illustration of the link mechanism of an indicator , consider the Crosby indicator illustrated in Fig . 134. In this indicator the pantograph is not used , and the B A C FIG . 139 ...
... roller pin at P. $ 96 . Crosby Indicator . - As a final illustration of the link mechanism of an indicator , consider the Crosby indicator illustrated in Fig . 134. In this indicator the pantograph is not used , and the B A C FIG . 139 ...
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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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