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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

An illustration from American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions, 1914, leaf 670
no. threads per inchd=depth = p X.8660 While the sharp V form gives a deeperthread than the U. S. Standard, theobjections urged against the thread are,that the sharp top is injured by theslightest accident, and, in the case of taps and dies, the fine edgeis quickly lost, causing constant variation… … 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—

Machine-shop practice

Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.

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