Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 80
nine and readily calculated, but will be about oneten inches axes, and seventy-two teeth, the twenty-thousandth of an inch. In all casesmaximum error is about one two-thousandth likely to be met with in practice, the inevit-of an inch. In both these cases, the differ-1 able mechanical errors are… … Involute elliptic teeth* Fig. 129, 143.—mVOLUTE ELLIPTIC TEETH. As in the case of the circular gear, thebest form of tooth for the elliptic gear is theinvolute, and for the same reasons. The base line of the involute tooth is anyellipse BE, Fig. 125, which is drawn fromthe same foci as the pitch…
Gearing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-301-163.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-452-178.webp)
