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A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 17
2.10 .09 7.86 3.46 .67 .03 2.50 1.10 I7h 17-18 2.14 .11 6.13 2.20 .68 .04 1.95 .70 20 19-21 2.20 .13 5.12 1.57 .70 .04 1.63 .50 23 22-24 2.26 .15 4.50 1.13 .72 .05 1.43 .36 27 25-29 2.33 .16 4.10 .96 .74 .05 1.30 .29 m 30-36 2.40 .19 3.80 .72 .76 .06 1.20 .23 42 37-48 2 48 .22 3.52 .63 .79 .07 1.12… … INTERCHANGEABLE SERIES. Example.—A gear of 24 teetli, and a gear of 12 teeth, of li circularpitch. Data.—Take from the table the numbers to be used, which are as followswhen multiplied by li. For 24 teeth, face rad, = 1.08 face dis, = .07. 24 flank = 2.15 flank — .54. 12 face ^ ,96 face = .03. 12…Gearing
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