. Electric railway journal . was brokeninto several pieces, but was welded together into its orig-inal form without the necessity for any further labor ormachine work. One of the illustrations shows the carriage for the re-sistance grids used for cutting down the trolley voltagewhere the current is collected from the trolley wire inorder to make repairs to the track. Alongside of this illustration is another showing two cup-outs in the headof a typically worn rail, the photograph having been takenimmediately after the welding operation and before theapplication of the grinder, which is used to
. Electric railway journal . was brokeninto several pieces, but was welded together into its orig-inal form without the necessity for any further labor ormachine work. One of the illustrations shows the carriage for the re-sistance grids used for cutting down the trolley voltagewhere the current is collected from the trolley wire inorder to make repairs to the track. Alongside of this illustration is another showing two cup-outs in the headof a typically worn rail, the photograph having been takenimmediately after the welding operation and before theapplication of the grinder, which is used to grind the filledportion of the rail to a smooth surface even with theadjacent track. The three illustrations on this page show a badly brokenpiece of special work in the various stages of rehabilita-tion. At the left the joint is shown in its original condi-tion before repair, and the adjoining two illustrations showthe same joint immediately after welding and after thegrinding of the built-up metal had been commenced. This. Electric Arc Welding—Typical Built-up Cup-outs BeforeGrinding was stated to be a somewhat difficult task for the reasonthat the frog was in such a worn-out condition as to be al-most beyond reclamation. The railroad officials consid-ered that in this case the frog might better have been re-placed. However, it shows the really extraordinary possi-bilities of the process. Of the two upper halftones on page 69, one is of ahardened center crossing which has been built up by thewelding of additional metal both on the manganese plateswhere they had become chipped and also on the rail whichhad cupped out. The operation has undoubtedly prolongedthe life of this crossing for several years. The other illus- tration shows an electrically welded built-up crossing inwhich no bolts or rivets have been used. The rivet headswhich are on the corner plates are installed merely to keephorses hoofs from slipping and do not enter in any wayinto the construction of the crossi
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