The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 153
t an angle of 10°, then multiply the secant of10° = 1.0154 by 3, and the result, 3.046, will be the correctdiameter on the pitch line; if 8 pitch, add two 8ths to this,making 3.296 for the diameter of the outside. If the samegear was to be 10 pitch, then add two lOths, making it 3.246outside… … THE MACHINIST AND TOOL MAKERS INSTRUCTOR. 149 If they were to be cut at an angle of 45°, then thesecant of 45° = 1.414 X 3 = 4.242 for the diameterat the pitch line. Suppose you want a spiral gear of 4 pitch, 36 teethand 10° angle. 36-H 4= 9, this multiplied by the secantof 10° = 9.1386 for the…
Machinery
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-electricengineer04inte-266-117.webp)
