Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 188
h worn sprocket,as the chain will be quickly ruined and an unsatisfactory drive is sureto result. A sprocket that has worn to a hooked form of tooth exertsat both entering and leaving contact a wedging action that cannot beresisted by any chain. Fixed distances between sprockets must be maintained… … Fig. 30.—Sprocket tooth form for roller chain. nates much noise and wear. In the old form the inevitable wear ofthe chain and the resulting elongation of the pitch, necessitates clear-ance in the sprocket teeth. The new form applies the same principleas that of silent chain sprocket teeth, the…
Machine design
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