The Mechanical Principles of Engineering and ArchitectureLongman, Brown, Green, and Longmans, 1855 - 675 стор. |
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Сторінка 254
... circles ABE and ADF , called their primitive or pitch circles . Let AB represent an arc of the pitch circle ABE , included between any two similar points A and B of con- secutive teeth , and let AD represent an arc of the pitch circle ...
... circles ABE and ADF , called their primitive or pitch circles . Let AB represent an arc of the pitch circle ABE , included between any two similar points A and B of con- secutive teeth , and let AD represent an arc of the pitch circle ...
Сторінка 255
... circle be struck from this point a with this least distance as a radius ... pitch circles simultaneously to the point of contact A , and the least ... pitch circles to the point of contact a ' of the two curves mn and m'n ' , will also be ...
... circle be struck from this point a with this least distance as a radius ... pitch circles simultaneously to the point of contact A , and the least ... pitch circles to the point of contact a ' of the two curves mn and m'n ' , will also be ...
Сторінка 256
... circle , provided that the circles of which these are the involutes be concentric with the pitch circles of the wheels , and have their radii in the same proportion with the radii of the pitch circles . E Let OE and OF represent the ...
... circle , provided that the circles of which these are the involutes be concentric with the pitch circles of the wheels , and have their radii in the same proportion with the radii of the pitch circles . E Let OE and OF represent the ...
Сторінка 258
... pitch circles , as also the points A and b in that touching the base of the other . 202. If one circle be made to roll externally on the cir- their mutual contact . The wheels would therefore be driven by the contact of teeth of the ...
... pitch circles , as also the points A and b in that touching the base of the other . 202. If one circle be made to roll externally on the cir- their mutual contact . The wheels would therefore be driven by the contact of teeth of the ...
Сторінка 259
... circle be made to trace out a curve upon the plane of the fixed circle , the curve so generated is called an ... pitch circles AF and AE of two wheels . If teeth be cut upon these wheels , whose edges coincide with the curves PQ and PR , they ...
... circle be made to trace out a curve upon the plane of the fixed circle , the curve so generated is called an ... pitch circles AF and AE of two wheels . If teeth be cut upon these wheels , whose edges coincide with the curves PQ and PR , they ...
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Загальні терміни та фрази
a₁ angle of resistance angular velocity arch axes axis beam body bordering upon motion capstan centre of gravity circumference compression corresponding crank curve cylinder deflexion descend determined dimensions displaced fluid distance ditto driven wheel driving Edition epicycloidal equal equation equilibrium evident exceedingly small extrados force formula friction given hypocycloidal impact inclination inertia intersect involute lamina length limiting angle line of centres line of resistance machine modulus moment of inertia moving numbers of teeth observing obtain oscillation P₁ P₂ parallel passing perpendicular pitch circle plane point of application point of contact portion position radius repre respect resultant revolution revolve rupture screw space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ U₂ unguent vertical vis viva viva vols voussoirs W₁ wall weight whence it follows whilst whole
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