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A short treatise on the designing and construction of gearing and mill-work. Accompanied by an explanation of the construction and use of the odontograph of Prof. Willis .. (1873) [Scott, David] engineer. [from old catalog] · New York, D. Appleton and company · leaf 50
9 12 16 19 25 31 37 43 49 56i 62 74 86 22 5 8 11 14 16 22 27 33 39 43 491 54 65 76 24 7 10 J2 15 20 25 30 35 40 45 49 59 69 26 9 11 14 18 23 27 32 37 41 46 55 64 28 4 6 .. 13 22 26 30 35 40 43 52 60 30 8 10 12 17 21 25 29 33 371 41 49 58 35 .. 9 11 16 19 23 26 30 34 38 45 53 40 •• 5 7 •• •• 15 18… … TABLE SHOWING THE PLACE OF THE CENTRES UPON THE SCALE. CENTRES FOR THE FACES OF THE TEETH. PITCH IN INCHES AND PARTS. Numberof teeth. i 1 i 1 1 1 U n 1| 2 H 2-^ 3 Si 12 1 2 2 3 4 5 6 1 9 10 U 12 15 17 15 3 1 8 10 11 12 14 17 19 20 2 ... 4 5 6 8 9 11 12 14 15 18 21 30 ... 3 4 ... 7 9 10 12 14 16 18… Gearing · Mills and mill-work · Odontograph
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