Spur and bevel gearing; a treatise on the principles, dimensions, calculation, design and strength of spur and bevel gearing, together with chapters on special tooth forms and methods of cutting gear teeth (1914)
New York, The Industrial press; [etc., etc.] · leaf 259
t. The pitch circles, etc.. of thevarious gears would be struck from centers located at the pointswhere the various axes OA. OB and OC break through the surfaceof the sphere. Except for the different surfaces on which thedrawing would be done, the procedure would be identical withthat for spur… … Figs. I, 2 and 3. niustxatiag the Spherical Basis of the Bevel Gear andTredgolds Approximation for developing the Outlines of the Teeth on aPlane Surface Tredgolds Approximation. — Owing to the impracticabLlity ofthe sphere as a drawing-board, a process known as Tredgoldsis usuaEy foUowed for…
Gearing
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