. Electric railway journal . with manganese steel platesinserted at the wear points. Type B was made of solidmanganese castings, arranged to fish with abutting C was a cast-steel bound or cast-iron bound con-struction, using standard Chicago rail with manganesesteel plates inserted at the points of greatest D was ordinary built-up track special work com-posed of rolled Chicago rail sections and mechanicaljoints. Other portions of these specifications providedfor over-all dimensions, tolerances, drilling and inspec-tion. All special work was built to a gage of 4 ft. 8V2 in.
. Electric railway journal . with manganese steel platesinserted at the wear points. Type B was made of solidmanganese castings, arranged to fish with abutting C was a cast-steel bound or cast-iron bound con-struction, using standard Chicago rail with manganesesteel plates inserted at the points of greatest D was ordinary built-up track special work com-posed of rolled Chicago rail sections and mechanicaljoints. Other portions of these specifications providedfor over-all dimensions, tolerances, drilling and inspec-tion. All special work was built to a gage of 4 ft. 8V2 straight track and on curves having a radius greaterthan 80 ft. On curves sharper than an 80-ft. radius, thegage was increased *4 in. In all special work, how-ever, a maximum variation of % in. greater than stand-ard gage was allowed. All switches, mates and frogswere designed for S^-in. wheel-tread clearance, a 1%6-in. throat and a tongue throw of 1^4 in. All exteriorfrog arms were required to be of sufficient length to. Chicago Special Work—Fig. 1—Showing Cupping of Manganese Mate at Run-off from Chicago Rail, Installed October,. 1903; Traffic, 80 Wheels Per Hour May 2, 1914.] ELECTRIC RAILWAY JOURNAL 971
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
