Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 60
e thread, a modification of the square thread, is shownin Fig. 87. The angle may be either 29 or 30 degrees. Thisform is used for transmitting motion. The reUeving of thethread allows the use of a split nut. A common example is the SCREW THREADS 43 lead screw of a lathe. Fig. 88 shows the buttress… … Fig. 92 split the nut. Fig. 85 shows the knuckle or rounded screwthread. This form can be cast in a mold. It is used only forrough work. Fig. 89 shows the common wood screw. Anattempt is made to consider the differences in strength of the
Mechanical drawing
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