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 136
ween the 14^- and 20-degree pressure anglescan be seen by comparing Figs. 6 and 7. Not only is the toothshorter, but the base is broader. The base circle for the tooth arcsis found in the same way as before. This form of tooth is largely used in automobile transmission andsimilar work. William… … Fig. 6. — Standard Tooth STUB-TOOTH GEARS Any tooth shorter than the regular standard length is called astub tooth, but like the bastard thread there have been manykinds. In 1899 the Fellows Gear Shaper Company introduced ashort tooth with a 20-degree pressure angle instead of the usual 14^-degree.…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
