A handbook on the teeth of gears, their curves, properties, and practical construction (1890)
Grant, George B. (George Barnard), 1849-1917 · Lexington, Mass., Lexington Gear Works · leaf 13
set to the radii to be used. By the new process the circles of centers are drawn at once without pre-liminary constructions, at the tabular distances from the pitch line, and thetable also gives the radii to be taken on the dividers. No special instru-ment is required, no angles or special lines… … ROBINSONS TEMPLET ODONTOGRAPH. This ingenious instrument, the invention of Prof. S. W. Eobinson of theOhio State University at Columbus, is based on the fact that some part ofa certain curve of uniformly increasing curvature, called the logarithmicspiral, can be made to agree with the true curve of…
Gearing
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