Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 842
4 7 9 10 12 14 16 18 21 25 40 6 8 11 13 15 17 19 23 26 60 5 10 12 14 16 IS 20 25 29 80 9 11 13 15 17 19 21 26 30 100 n 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 GEERING. 839 The double curve df is alsD true for an annular wheel of the same number of teeth, f… … 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 i\ by doubling 2\, and so on; or if the difference be small, the column belonging to the
Mechanical engineering · Mechanics · Engineering
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