Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 26
may be generated by the rolling upon the same base-circle of either of two circles; and the same istrue of the hvpocyeloid. Thus, in Fig. 2106, in the diagram on the left, let D be the centre of thebase-circle, arid C that of one which by rolling upon it will generate the epicycloid shown, the… … 18 GEARING. diameters of the other two. Thus every internal epicycloid is also an external one ; but the epitro-choids traced by points carried by these different describing circles, not on their circumferences, willnot be the same. In the diagram on the right, D is the centre of the large…
Mechanical engineering -- Dictionaries
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