MILLING MACHINE USES 263 FIG. 20.— A WORM MILLING MACHINE MADE BY THE CLEVELAND AUTOMATIC MACHINE CO., CLEVELAND, OHIO, U. S. A. … -WORMS MILLED ON THE MACHINE SHOWN IN FIG. one hour, we have the cost of milling and comparing the rates of wages paid the worm, — 10 cents, against $1.10 for for the two different methods of cutting cutting the thread on a lathe. these worms, it is very easy to see the The makers of this machine…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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