Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 58
Normal Rack.Fig. 86. Spiral Rack,Fig* 87. … Beale8 Experimental Gearg.Fig. 88i 108.—THE AXIAL PITCH. The section of the spiral gear by a plane [ spiral angle. Thus, if the angle is 45°, thethrough the axis is that of a rack, and the j axial pitch is the same as the true pitch, butaxial pitch, or pitch of the rack, is found by I the axial…
Gearing
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