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 815
S12 GEERING. … e. A straight line drawn from A through c will then make the required division of the angle BAO,ai;d define the line of contact of the two cones, by means of which the two rolling frusta may be projected at any convenient distance from A. Otherwise, having determined the relative perimeters, aM6_…
Mechanical engineering · Mechanics · Engineering
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