Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 84
It y8 A MANUAL OF MECHANICAL DRAWING, Plate 20. The Hypocycloid. The method of drawing this curve is the same as This is a curve which is described by any point in the that employed in drawing the epicycloid. A lengthy circumference of a wheel which is rolling on the inside description would only… … 79 8o A MANUAL OF MECHANICAL DRAWING. In Plate 21 is given an illustration of the applicationof the epicycloid and the hypocycloid to the drawing ofcyclodial gear teeth. The generating circle is rolled onthe outside and inside of the director/^ which in thisinstance is the imaginary or pitch circle…
Mechanical drawing
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