Gas Torch and Thermit Welding

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...mean a considerable loss. They are welded--the holes filled with similar metal from a filler-rod as shown in Fig. 161--at a cost of but a few cents each and they pass inspection as being as good as perfect castings. Through error four cast-brass U-plates for rudder frames, Fig. 162, weighing 1000 lb. each, were made 6 in. too long. To repour these plates would have held up some important work and the expense, including change of pattern, would have been very high. The mistake was quickly and economically corrected by cutting 6 in. out of each as shown by the illustration and welding the frames together again. A REMARKABLE CYLINDER WELDING JOB Writing in the American Machinist, Jan. 8, 1920, L. M. Malcher, superintendent of the Chicago shop of the Oxweld Acetylene Co., says: One of the 5000-hp. Allis-Chalmers twin tandem compound reversing steel rolling mill engines at the Farrell works of the Carnegie Steel Co., Farrell, Penn., that had been doing its full share in helping to win the war broke down two weeks after the signing of the armistice. In the accident, besides other parts, the left-hand low-pressure steam cylinder, Fig. 163, 70 in. inside diameter, was badly fractured, as a result of the breaking of a connecting-rod at the moment of reversal. It would have taken at least three to three and one-half months to obtain a new cylinder, in case the broken one could not be repaired in a shorter time; besides throwing 360 men out of employment. The broken cylinder was of such size and the damage done was of such character that a decision whether fm. 163.--Wrecked Low-PressuTe Cylinder. The seven cracks ranged from 1 16 8 ft. in length and 21 to 31 in. in depth and are shown V-grooved by chipping preparatory to welding. the cylinder was to be ren...