MechanismLongmans, Green, and Company, 1905 - 408 страници |
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Страница 4
... 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 at all , it must be compelled to move in the dotted path . It is clear that in the general case , where the ...
... 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 at all , it must be compelled to move in the dotted path . It is clear that in the general case , where the ...
Страница 21
... drawn perpendicularly to the inclined face of B , DF horizontally , and EG vertically , the ratio of the vertical descent of B to the horizontal displace- ment of C is obviously EG DF § 23. Belt - driving . - A very common illustration ...
... drawn perpendicularly to the inclined face of B , DF horizontally , and EG vertically , the ratio of the vertical descent of B to the horizontal displace- ment of C is obviously EG DF § 23. Belt - driving . - A very common illustration ...
Страница 26
... drawn through them may be taken to represent the profile of the pulleys . § 25. Lateral Stiffness of Belts . Swell of Pulleys.- When flat belts are used for driving purposes , the belt may be kept on a truly cylindrical pulley by giving ...
... drawn through them may be taken to represent the profile of the pulleys . § 25. Lateral Stiffness of Belts . Swell of Pulleys.- When flat belts are used for driving purposes , the belt may be kept on a truly cylindrical pulley by giving ...
Страница 33
... drawn of different sizes . If the upward displacement of the running block be denoted by unity , the displacement of a point in the first ply is unity also , and so likewise is the displacement of a point in the second ply , since the ...
... drawn of different sizes . If the upward displacement of the running block be denoted by unity , the displacement of a point in the first ply is unity also , and so likewise is the displacement of a point in the second ply , since the ...
Страница 36
... drawn through the centre of the pulley , in the first position , parallel to the directions of the cord ; and if , also , from the centre of the pulley in the displaced position ( which may FIG . 45 . be supposed very near to the first ) ...
... drawn through the centre of the pulley , in the first position , parallel to the directions of the cord ; and if , also , from the centre of the pulley in the displaced position ( which may FIG . 45 . be supposed very near to the first ) ...
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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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