. Electric railway journal . REPAIRED PART IN PLACE READY FOR SERVICE Repairing Box of Manganese-Insert Frog THE accompanying illustrations show a somewhatunique application of thermit welding in repairingthe cast-iron box of a manganese-insert frog installednear the carhouses of the Union Street Railway, NewBedford, Mass. This box was broken just at the edgeof the manganese steel center as a result of car carrying out the repairs the frog was removed fromthe pavement and the manganese center was taken end part of the cast-iron box outside the fracturewas cut away with hamme
. Electric railway journal . REPAIRED PART IN PLACE READY FOR SERVICE Repairing Box of Manganese-Insert Frog THE accompanying illustrations show a somewhatunique application of thermit welding in repairingthe cast-iron box of a manganese-insert frog installednear the carhouses of the Union Street Railway, NewBedford, Mass. This box was broken just at the edgeof the manganese steel center as a result of car carrying out the repairs the frog was removed fromthe pavement and the manganese center was taken end part of the cast-iron box outside the fracturewas cut away with hammer and chisel, to providespace for the new metal. That part of the end ofthe cast-iron box which remained was then thermit-. TOP AND BOTTOM. VIEWS OP THE WELDED BOX 562 Electric Railway Journal Vol. 57, No. 12 welded in the usual manner to two rails on the sameside. Top and bottom views of the complete weldare shown in the illustrations and give a fair ideaas to the extent of the operation. The welding ofthis frog required two days of time and 85 lb. ofthermit. After the welding operation had been completed,the excess metal on the weld was removed andthe manganese plates were again inserted in the cast-iron box and secured to the box by means of repaired part was then reinstalled in the additional illustration shows it in place ready forservice. Method of Sig-nal Maintenancein Chattanooga Analysis of Signal Troubles and Failures for Year 1920 asCompared with 1919 Shows Substantial Decrease,Which Can Be Attributed Directly toImproved Maintenance THE annual report of the signal department of theChattanooga Railway and Light Company, Chat-tanooga, Tenn., gives a comparison of the signal p
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