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 141
off three orfour points on the line C, and with our template or protractorof 75° 3(K, draw the shapes in the same manner as explainedin spur gears, using for the circle A a radius equal to one-fourth of the line BB. Remember that the shape and dimensions of these teethon the circle C C are just the… … THE MACHINIST AND TOOL MAKERS INSTRUCTOR. 137 the teeth gradually get smaller in all dimensions, dependingon the length of face, etc. Now, we have found the shape of the teeth, but in cuttingbevel gears the cutters will have to be made thin enough tocut through at the small end of the teeth, and…
Machinery
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