A handbook on the teeth of gears, their curves, properties and practical construction (1885)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 16
of the curve, just where the Willis arc is most out of place, orwhere the true curve, unless drawn by some delicate and costly apparatus,in most likely to be out of place. CIRCULAR AND DIAMETRAL PITCHES COMPARED. CIR. P. DM. P. 6 .52 5i .58 5 .63 4i .70 4 .78 3i .90 3 1.05 21 1.15 2h 1.25 H 1.40 2… … GENERAL DIRECTIONS. Draw the pitch line and divide it for the pitch points mag. Take fromthe tables, multiply or divide, as the case may require, by the pitch in use,and lay olf, the addendum a b and a c, the clearance e f, the backlash g- g,the face distance a d, and the flank distance a c. Draw…
Gearing
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