MechanismLongmans, Green, and Company, 1905 - 408 páginas |
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Página 8
... perpendicular slots cut in a board . If the frame of the slots be fixed and the blocks slide in the slots , it is well known ( § 83 ) that a pencil attached at any point D in the link CB will trace out an ellipse on a sheet of cardboard ...
... perpendicular slots cut in a board . If the frame of the slots be fixed and the blocks slide in the slots , it is well known ( § 83 ) that a pencil attached at any point D in the link CB will trace out an ellipse on a sheet of cardboard ...
Página 19
... perpendicular from B on the direction AD . § 20. Screw : Single and Multiple Threaded ; Right and Left Handed . -Imagine the plane in the previous figure to be a thin thread , and let the thread be wrapped round a circular cylinder in ...
... perpendicular from B on the direction AD . § 20. Screw : Single and Multiple Threaded ; Right and Left Handed . -Imagine the plane in the previous figure to be a thin thread , and let the thread be wrapped round a circular cylinder in ...
Página 30
... perpendicular to each other and very near together , connected by means of an endless belt passing over two guide pulleys which ride loosely upon the spindle C. Whatever the direction of motion , the central plane FIG . 37 . of each ...
... perpendicular to each other and very near together , connected by means of an endless belt passing over two guide pulleys which ride loosely upon the spindle C. Whatever the direction of motion , the central plane FIG . 37 . of each ...
Página 36
... perpendicular to the first two lines , then the two portions of the cord are shortened by the amounts AL and AM ( approxi- mately ) , and the actual velocity ratio of haul to left is ( AL + AM ) ; that is to say , ( cos 01 + cos 02 ) ...
... perpendicular to the first two lines , then the two portions of the cord are shortened by the amounts AL and AM ( approxi- mately ) , and the actual velocity ratio of haul to left is ( AL + AM ) ; that is to say , ( cos 01 + cos 02 ) ...
Página 40
... perpendicular to it and the axis . In spur wheels , the pitch surfaces are cylinders and the pitch lines circles , as shown by the broken circular lines in Fig . 52 ; in bevel wheels , the pitch surfaces are frusta of two cones and the ...
... perpendicular to it and the axis . In spur wheels , the pitch surfaces are cylinders and the pitch lines circles , as shown by the broken circular lines in Fig . 52 ; in bevel wheels , the pitch surfaces are frusta of two cones and the ...
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Términos y frases comunes
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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