American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 638
GEARS — Continued 609 … o Sprocket Gears — Toothed wheels for chaindriving. A is the regular and B is a hooktooth for running one way only. Gear Teeth — The projections which, meshing together, transmit apositive motion. The involute curve tooth is now almost univer-sal. The older form has a 14^ degree pressure angle but…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
