Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 7
e. For thebevel gear the normal surface is a sphere,and for the spur gear the sphere becomes aplane. General Theory. 9.—UNCERTAINTIES. The theory of tooth action is not yet falland definite in all its parts, for there aresome disputed points, and some confusionand clashing of rules and systems.… … JPitch cylinder* Two cylinders, A and B, Fig. 1, that willroll on each other, will transmit rotary mo-tion from one of the fixed parallel axes c andG to the other, if their surfaces are providedwith engaging projections. When these projections are so small thatthey are imperceptible, the motion is…
Gearing
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