Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 418
MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 401 the tubes are cut with a taper thread, uniform with all makers, of 1 in 32 tothe axis. The length of the screwed portion varies with the diameter. … Fig. 944. Fig. 94.5. Fig. 945 is the longitudinal section of tapering tube-end with the screwthread as actually formed, and considered standard by the late Robert Briggs,C. E., in his Treatise on Warming Buildings by Steam. It is shown in thefigure double full size for a nominal 2^ tube. DIMENSIONS…
Mechanical drawing
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