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 844
21 20 (19 | 18 | 17 j 16 15 GEERING. 841 When the numbers have been selected, the Odontagraph may be employed to draw the figure of thacutter corresponding to each -wheel, either on the same scale, or better, on a larger scale, -which may boafterwards reduced proportionally to the size required. To… … of contact, and which are capable of revolving round A and B. It is plain that the line P Q is, in everyposition of contact of these curves, equal to the sum of their radii, and must therefore be constant duringsuch motion ; and hence, if for the circular arcs, a pair of rods A P, B Q, connected by…
Mechanical engineering · Mechanics · Engineering
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