Beale, Oscar James, Brown & Sharpe Manufacturing Company (Providence, R.I.) · Providence, R.I. : Brown & Sharpe Mfg. Co. · leaf 120
space. Now, to make this space D C, the path of cut-ting is along the dotted line a h. By mere inspection,we can see that the shortest distance between twoteeth along the pitch surface is not the distanceADC. Let the line A E B be perpendicular to the sides ofteeth upon the pitch surface. A… … IPiiT, .a.5 102 BROWN & SHARPE MFG. C!0. Normal Pitch. The Normal Fitch of a spiral gear is then: Theshortest distance between the ce7iters of two consecutiveteeth measured along the pitch surface. In spur gears the normal pitch and circular pitchare alike. In the rack D D, Fig. 40, the linear…
Gearing
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