Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914)
Griffin, Charles Lewis, 1867-, Adams, Charles Clyde, 1882- joint author · Chicago, American technical society · leaf 156
ore, draw the line CD at an angle of 15° withthe tangent XY; with A and B as centers, draw circles tangentto CD; these circles are called the base circles. The addendum,dedendum, and root circles are then drawn at the same relativedistance from the pitch circles as in the case of cycloidal… … 144 MACHINE DRAWING accordance with the method of Fig. 117, or as explained in Mech-anical Drawing, Part II. Then, by the tracing-cloth method, orby the use of a templet fitted to this curve, draw in the tooth curvesat points R, S, T, etc., on the pitch circles. This gives us the work-ing part of…
Machinery
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