. Electric railway journal . eat is so concentratedand the weld can be made so rapidly that the entirejoints between the Z-bars and the bracing strips can bemade without throwing the Z-bars out of alignmentappreciably. This close-up view of the bottom seam Abstract of address made before Association of Railway Men,Mansfield, Ohio, Dec. 7, 1920. shows how uniformly a good operator can put down thedeposited metal. Incidentally, this entire case waswelded by an operator who had been using the oxy-acetylene welding process for years, but who had onlytwo weeks training previous to building this par
. Electric railway journal . eat is so concentratedand the weld can be made so rapidly that the entirejoints between the Z-bars and the bracing strips can bemade without throwing the Z-bars out of alignmentappreciably. This close-up view of the bottom seam Abstract of address made before Association of Railway Men,Mansfield, Ohio, Dec. 7, 1920. shows how uniformly a good operator can put down thedeposited metal. Incidentally, this entire case waswelded by an operator who had been using the oxy-acetylene welding process for years, but who had onlytwo weeks training previous to building this particulararc-welded tank. Fig. 4 shows the method used by one of the pressedsteel car builders for attaching the felt lining for the inside of a car body. Thepositive side of the weld-ing circuit is attached tothe car body and theoperator, using a pair ofpliers connected to thenegative side of the circuit,grips finishing nails in thepliers so that he can touchthe head of each nailagainst the side of thecar sheeting, drawing an. arc. He then pushes the nail into the molten metal thusformed and releases the pliers, leaving the nail attachedto the plate as indicated. The felt lining is then presseddown over these nails, after which circular disksof tin, such as are used for fastening tar paper roofing,are pressed down over the nails. After this hasbeen done the nails are clinched over to hold thelining in position. In Fig. 5 is illustrated a very neat and satisfactoryway of building up the worn surfaces of a standardcoupler knuckle. A number of steam railroads arefollowing this practice. Experience in Welding Undersize Motor Shafts If undersize motor shafts are reclaimed by weldingand turning down to proper size it would appear fiomsuperficial observations that this practice is , if the shaft is cut through the deposited sec-tion, as illustrated by Fig. 6, and the section is ground,polished and etched it will be found that the deposited
Size: 2157px × 1158px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
