Elementary mechanical drawing, for school and shop (1886)
Aborn, Frank, 1845- [from old catalog] · Cincinnati, New York, Van Antwerp, Bragg & co · leaf 100
long; scale, J in. to the foot. Section II.—Helical Bands. A Helical Band is the spacebetween two similar and par-allel helices. Prob. 1.—Make a constructivedrawing for a right-hand hel-ical band J in. wide, 1 in. in di-&£ anieter, f in. pitch, and 111 in.long. Solution.—Draw plan and$j: P-if… … Fig. 123. CONSTRUCTIVE DRAWING. 99 same pitch as the first. The space between thesehelices will be the helical band required in theproblem. Prob. 2.—Make a constructive drawing for aright-hand helical band i in. wide, 2 in. long, 2 in.in diameter, li in. pitch. Prob. 3.—Make a constructive drawing…
Mechanical drawing
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