Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 29
crew thread. B.S.W. means British Standard, Whitworth or English thread. B.S.F. means British Standard fine screw thread. Other notes and information may be understood by consulting thehandbooks published by American Machinist and Machinery. 33. Pipe Threads.—Wrought pipe is specified by its… … /^bur imperfecf fhreods i fu// af roofs [-« .30 yX-—.P3 y\* Complefe fhreods .69 Fig. 35. Enlarged Section of 2\ Pipe Thread. Pipe threads have an angle of 60°, and have the top and l^ottom of theV rounded. The threads are cut on a taper of three fourths inch perfoot. The form is shown in Fig. 35.…
Machinery
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