. Electric railway review . rification of the Rochester Division of the ErieCatenary Trolley Hanger. ifOffOoyoirSi/ssss Electrification of the Rochester Division of the Erie—Diagramof Connectors, Avon Substation. to use self-supporting span construction, and this was doneby using the tripartite type of steel pole, set in type of pole being constructed of rerolled Bessemer steelrails, is less subject to rust, and consequently more durablethan any other available type of metal pole, and all of itssurfaces are always open and easy of inspection. On accountof the great tensile streng
. Electric railway review . rification of the Rochester Division of the ErieCatenary Trolley Hanger. ifOffOoyoirSi/ssss Electrification of the Rochester Division of the Erie—Diagramof Connectors, Avon Substation. to use self-supporting span construction, and this was doneby using the tripartite type of steel pole, set in type of pole being constructed of rerolled Bessemer steelrails, is less subject to rust, and consequently more durablethan any other available type of metal pole, and all of itssurfaces are always open and easy of inspection. On accountof the great tensile strength of the material there is consider- the rails and the trolley wire being finally 18 feet. The mes-senger is fastened to a horizontal spool type insulator mountedat the center of a substantial piece of turned oak, which islong enough to carry two more similar insulators, one oneither side of the center one, the details being shown in anaccompanying illustration. At either side of these overhead obstructions it was neces-. Electrification of the Rochester Division of the Erie—Trolley Construction Under Low Bridge. able saving in weight, and the fact that it was a standardizedproduct enabled quicker delivery to be made than though spe-cial riveted poles of structural steel shapes had been especiallydesigned for these locations. Similar construction was alsoused at Avon, where guying of the side poles was not alwayspossible. The presence of several through truss bridges over sary to provide warnings for brakemen upon the tops of freightcars, as substitutes for the warnings of hanging pieces of ropepreviously used. In an accompanying illustration is given aview of the Clarissa street bridge, showing both the old ar-rangement of ropes and the new one, for electrified trackswhich supplanted it. It will be noted at this point only one ofthe two tracks is electrified track; but to insure that the place October 1:;, 1907. ELECTRIC RAILWAY REVIEW 4:{:5 shall be absolutely safeguarde
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
