. Electric railway journal . body is carried by the top mem-bers of the side frames, each of which rest on two pairsof coil springs mounted on the main frames just outside ofthe pedestals. The overhang of the car body is supportedby leaf springs carried on extensions of the main sideframes. Over each journal box is a forged yoke or hanger,to which is fastened at the bottom a short bar carrying coilsprings at each end. The weight of the main frames restson these springs. By means of these yokes the wheels andaxles have free side play to take up lateral shocks. Intrucks built without the radiati
. Electric railway journal . body is carried by the top mem-bers of the side frames, each of which rest on two pairsof coil springs mounted on the main frames just outside ofthe pedestals. The overhang of the car body is supportedby leaf springs carried on extensions of the main sideframes. Over each journal box is a forged yoke or hanger,to which is fastened at the bottom a short bar carrying coilsprings at each end. The weight of the main frames restson these springs. By means of these yokes the wheels andaxles have free side play to take up lateral shocks. Intrucks built without the radiating feature the links or hang-ers are attached directly to the horizontal spring-support-ing bars by pin connections. A different method is used,however, in the radial truck illustrated. The swing linksare connected flexibly to a housing or box surrounding thehorizontal spring-supporting bar. This housing is pro-vided with a number of cold-rolled steel rollers, on whichthe spring bar rests. The spring bar is thus free to move. Side Elevation and Half Plan of Pendulum Radial Truck get between these coils and overheat the inside inside and outside casings are separated by a i-in. airspace with inlets at the bottom for cold air and outlets atthe top for heated air. It is therefore impossible for theouter casing to become hot enough to burn passengers whomight come in contact with it or to scorch their clothing-. longitudinally with respect to the journal box, and by wid-ening the pedestal jaws sufficiently each pair of wheelsand axle can assume a true radial position on a curve with-out setting up strains in the truck frame. To prevent thehousing from binding on the spring bar the seat for theswing links on top of the journal box is made to swivel, November 13, 1909.] ELECTRIC RAILWAY JOURNAL. 1031 thus permitting the links to remain in a plane parallel withthe supporting bar when the axle assumes an angular posi-tion with respect to the truck frame. In the radial truckt
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
