Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 99
ectedupon a plane parallel to the axis, as in Fig.154, in which A is the projection of the axis,d is that of the generatrix, dQA is the skewangle, and ^is the principal hyperbola. When the skew angle and the gorge radiusare given, the hyperbola is easily constructedby points. Any line db is drawn… … Xhe Tiyperbvla, Fig. 154. To draw a tangent to the curve at anypoint a, draw a line am parallel to theassymptote d, lay off mn equal to Gm, anddraw the tangent an. 172.—THHE PITCH HYPOIDS. The utility of the hypoid as the pitch sur-face of the skew gear depends upon the pe-culiar property that any…
Gearing
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