MechanismLongmans, Green, and Company, 1905 - 408 страници |
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Страница 4
Stanley Dunkerley. some other body , B. To obtain the proper shape of B , plot the block in different positions and draw curves to touch the sides of the block ; then cut out , in B , a slot of the shape so obtained , so that if A move ...
Stanley Dunkerley. some other body , B. To obtain the proper shape of B , plot the block in different positions and draw curves to touch the sides of the block ; then cut out , in B , a slot of the shape so obtained , so that if A move ...
Страница 9
... obtained as there are links , and the different mechanisms may be used for a variety of different purposes . But it must be remembered that they are the same kinematic chain , and that the modification of motion depends on the chain ...
... obtained as there are links , and the different mechanisms may be used for a variety of different purposes . But it must be remembered that they are the same kinematic chain , and that the modification of motion depends on the chain ...
Страница 35
... obtained , and thus a correspondingly large weight may be raised . known as Weston's differential tackle . § 30. Oblique - acting Tackle . - In dealing with tackle , it has so far been assumed that the plies of the rope or chain are ...
... obtained , and thus a correspondingly large weight may be raised . known as Weston's differential tackle . § 30. Oblique - acting Tackle . - In dealing with tackle , it has so far been assumed that the plies of the rope or chain are ...
Страница 39
... obtained , in which an in- A IR C FIG . 50 . definitely thin disc keyed to the axis OA with a flat disc keyed to the axis OB . ratio of the thin disc to the flat wheel is B FIG . 51 . has frictional contact The angular - velocity OA AC ...
... obtained , in which an in- A IR C FIG . 50 . definitely thin disc keyed to the axis OA with a flat disc keyed to the axis OB . ratio of the thin disc to the flat wheel is B FIG . 51 . has frictional contact The angular - velocity OA AC ...
Страница 43
... obtained . § 38. Trains of Wheels . Compound Wheels . Value of Train . The pair of wheels so far considered constitute a chain con- sisting of three pairs . Spur wheels , bevel wheels , and worm wheels are examples of two turning and ...
... obtained . § 38. Trains of Wheels . Compound Wheels . Value of Train . The pair of wheels so far considered constitute a chain con- sisting of three pairs . Spur wheels , bevel wheels , and worm wheels are examples of two turning and ...
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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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