Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 836
aken fromthe points of contact with the base equal to the arcs c a of the base, we can readily determine thepoints of the curve, and consequently the curve itself. The epicycloid may be described by the compasses in the following manner. Let us in the first placetake the exterior curve. Having… … equal to the divisions of the circumference ABD. Then, as the circle ABD rolls upon the circle A aAy, the points 1, 2, 3, will coincide successively with the points 1, 2, 3; and, drawing radii from thepoint 0 through the points 1, 2, 3, and also describing arcs of circles from the centre 0, through…
Mechanical engineering
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