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 51
13 15 17 19 23 26 60 5 10 12 14 16 18 20 25 29 80 ... ... 9 11 13 15 17 19 21 26 30 100 ... ... 7 18 20 22 31 150 ... 5 6 ... ... ... 14 16 19 21 23 27 32 Rack. ... 4 ... 10 12 15 17 20 22 25 30 34 42 GEERING. The double curve df is alsD true for an annular wheel of the same number of teeth, /… … The numbers for pitches not stated in the table, may be obtained from the column of some otherpitch by direct proportion. Thus for 4-inch pitch, by doubling the number of the column of the 2-inchpitch; for 4^ by doubling 2^, and so on; or if the difference be small, the column belonging to th«
Gearing · Mills and mill-work · Odontograph
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