Beale, Oscar James, Brown & Sharpe Manufacturing Company (Providence, R.I.) · Providence, R.I. : Brown & Sharpe Mfg. Co. · leaf 72
sketch. It is impractical to hob a wheel of 12 to about 16 or18 teeth when blank is sized by this rule, unless thewheel is driven by independent mechanism and not bythe hob. The diameter across the outermost parts ofteeth, as at A B, is considerably less than the largestdiameter of wheel before it… … Fig. 33. 54 BROWN & SHARPE MFO. CO. cutter should be thin enough to leave stock for finish-ing. The spaces can be cut the full depth, the cutterbeing dropped in. To get angle of worm-thread, it is best to apply pro-tractor directly to the thread, as computing theangle affords but little help.…
Gearing
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