Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 30
desired point. This method is so accurate, if care is takento step accurately on the line, that the curveseldom needs correction; but, when great ac-curacy is required, correction can be appliedat the rate of one-thousandth of an inch tothe step, if the length of the step is regulatedby the… … Constr points Fig, 37. four inches in diameter, and the divid-ers areset to .46 inch, the true curve, A b d, will beoutside of the constructed curve Ab dhj .002inch at b and .005 inch at d. From the table we can form the handy andsufficiently accurate rule that the length ofthe step should be about…
Gearing
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