drels, and we are informed semer steel is found to be the best adapted for pounds of heavy oils, 9 5 pounds naphtha yellow, 6'3 that the higher the speed the less the heating of the the work and to stand the hardening. Reference to [pounds of naphthaline, 4'75 pounds of naphthol, 2'25 mandrel for… … NEW MACHINERY FOR MANUFACTURING METAL TUBES. pounds of phenol, 1*2 pounds of aurine, 1*1 pounds of forced through a white hot billet of steel 1 foot in the spindle. D, and rotated by the wheel, F, driven by aniline, 0'77 pound of toludine, 0-46 pound of anthra- thickness so rapidly that the mandrel…
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