Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 38
SCREW THREADS 23 shown. The edges of the tliread form turns called^^ helices/ a single turn being a ^^ helix/ These edgesare, however,, simply represented by straight lines whichare used in most cases as in Fig. 24. 15. Construction of a Double, Left-handed V Thread,4 Threads to an Inch.—In Fig. 25…
Mechanics, Applied
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