Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 96
of using theangle templet at the lathe. This table of chords is very convenient formany purposes not connected with gearinir,and it is more accurate than the commonhorn or paper protractor. 167.—BILGRAMs CHART. A graphical method for determining the angle and diameter increments, the inventionof… … Chord of an angle, Fig. 150. Using the templet T^BLE OF CHORDS OF ANGLES, AT RADIUS OF SIX INCHES. Degrees. Chord. Tenths. Degrees. Chord. Tenths. Degrees. Chord. Tenths. 1 .10 31 3.20 61 6.10 2 .20 32 3.31 62 6.19 3 .31 33 3.41 63 6.28 4 .42 34 3.51 64 6.36 5 .52 3536 3.61 65 6.45 6 .62 3.71 66…
Gearing
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