A handbook on the teeth of gears, their curves, properties, and practical construction (1890)
Grant, George B. (George Barnard), 1849-1917 · Lexington, Mass., Lexington Gear Works · leaf 41
Fig,9 … Unrevevsihle teeth EEVEKSIBLE GEAES. If the two sides a b and cd of the tooth ofFig. 9 are not similar odontoids, the teethmay still belong to an interchangeable set, forthe similar sides will always come together, no
Gearing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Works. Popular edition.] 2 series (1886)](https://img.insideoutlibrary.com/img/200/bl-bl_003191336_5-147-1.webp)
