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 670
p=pitch= 7, , . , no. threads per mchd=depth=p X .64033r=radius=p x .1373 The Whitworth thread is the standard inuse in England. It was devised by Sir Joseph WTiitworth in 1841, the system then proposed by him being slightly modified in 1857 and 1861. Worm Thread, Brown & Sharpe 29 de-gree— … p = pitch =■ no. threads per inch d = depth = p X .6866/ = flat on top of thread = p x .335This thread is commonly used inAmerica for worms. It is consider-ably deeper than the Acme screwthread of the same angle, namely 29 degrees. -*\f K- 642 SECTOR — SHAPER Sector — A device used on an index…
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
