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 27
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… … same hypocycloid will be traced by therolling of cither of them within the out-er circle. In both these eases, if thecurve be traced in a given direction, thetwo circles by which it may be gener-ated will roll in opposite directions. The Epitrochoid.—It is evident thatthe marking-point carried by a…
Mechanical engineering -- Dictionaries
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