. Electric railway journal . DOUBLE GUARD FOR RAILS FIG. 7 POSITION OF SINGLE-TRUCK CAR ON DOUBLE-GUARDED CURVE. DOUBLE GUARD FOR RAILS—FIG. 8 LENGTH OF FLANGE (A) DOUBLE GUARD FOR RAILS FIG. 9 CAREFUL GUARDING ASSURES IN GROOVE OF RAIL AT TREAD LINE ABSOLUTE ALIGNMENT OF TRUCKS line of wheels before and after a run of 10,770 milesover single-guarded rails, or less than one-quarter ofthe guaranteed life. In Fig. 5, illustrating the positionof a car on a single-guarded curve, is shown the widegroove between the single guard and the rail, the posi-tion of the axle as having no apparent relation
. Electric railway journal . DOUBLE GUARD FOR RAILS FIG. 7 POSITION OF SINGLE-TRUCK CAR ON DOUBLE-GUARDED CURVE. DOUBLE GUARD FOR RAILS—FIG. 8 LENGTH OF FLANGE (A) DOUBLE GUARD FOR RAILS FIG. 9 CAREFUL GUARDING ASSURES IN GROOVE OF RAIL AT TREAD LINE ABSOLUTE ALIGNMENT OF TRUCKS line of wheels before and after a run of 10,770 milesover single-guarded rails, or less than one-quarter ofthe guaranteed life. In Fig. 5, illustrating the positionof a car on a single-guarded curve, is shown the widegroove between the single guard and the rail, the posi-tion of the axle as having no apparent relation to theradii of the curve, and the points of circular shear ofthe wheels against the rails. The points of contact ofthe flanges against the rail are indicated by the lettersA, B and C. The dotted line D indicates the directionthe wheels take when a derailment occurs. Outer Guard Lessens Wear on Railsand Wheels Figs. 6 and 7 illustrate the wear on rails and theposition of the car axles when the double guard is rails shown in Fig. 6 were removed from the Dela-ware Avenue and Market Street loop, Phil
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
