Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 58
th a milling cutterthat is made for a standard spur gear. Agear of 8 pitch and 45° angle should have an addendum of ^^ = .089. If the addendum is determined by the truepitch when the angle is considerable, thetooth will be long and thin. Fig. 86 showsthe normal pitch section of a rack to runwith a… … Normal Rack.Fig. 86. Spiral Rack,Fig* 87.
Gearing
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