. Electric railway journal . h straight rail and special work. An interesting example of the application of the electricarc welding on this road occurred soon after the introduc-tion of the process, when about 600 half gear cases whichwere taken from the scrap pile were reclaimed at a pricenot exceeding 50 cents each. The new value of thesegear cases was about $4,000, so that the saving on the lotamounted to about $3,700. These gear cases could not berepaired by ordinary methods. To all intents they werescrap material, quite incapable of being reclaimed com-mercially until the introduction of
. Electric railway journal . h straight rail and special work. An interesting example of the application of the electricarc welding on this road occurred soon after the introduc-tion of the process, when about 600 half gear cases whichwere taken from the scrap pile were reclaimed at a pricenot exceeding 50 cents each. The new value of thesegear cases was about $4,000, so that the saving on the lotamounted to about $3,700. These gear cases could not berepaired by ordinary methods. To all intents they werescrap material, quite incapable of being reclaimed com-mercially until the introduction of the new process per-mitted patches to be welded over the holes worn through 68 ELECTRIC RAILWAY JOURNAL [January ij, 1913. the original metal. The use of a localized flame whichcould be directed around the edges of the patch regardlessof its irregularity naturally made these repairs rapid aswell as inexpensive. In the car repair shop the ability of the electric arc toweld cast iron is the most surprising of its features, and. Electric Arc Welding—Cart Containing Resistance Gridsfor Use with Trolley Voltage this adds very materially to its sphere of usefulness. Oneof such pieces of repair work is shown in the accompany-ing illustration of various parts of car equipment re-claimed in the shops of the United Railroads of San Fran-cisco. This is a cast-iron controller back which 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
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