. The street railway review . FIG. 5—TRIPLE CUSHIONED SWING BOLSTER CENTER BEARING NO. 14 D. On the end of the truck frame beyond the pilot wheels is located asegmental track upon which works a roller to which pressure istransmitted from the car body through a spring. This pressure iscapable of adjustment. The roller with its supports being securedunder the car body, when the truck runs into a curve the pilot wheelsswing beneath this roller in such a manner as to transfer its positionon the slide toward the outside pilot wheel on the curve. In other permit of the swingmg of a half elliptic spr
. The street railway review . FIG. 5—TRIPLE CUSHIONED SWING BOLSTER CENTER BEARING NO. 14 D. On the end of the truck frame beyond the pilot wheels is located asegmental track upon which works a roller to which pressure istransmitted from the car body through a spring. This pressure iscapable of adjustment. The roller with its supports being securedunder the car body, when the truck runs into a curve the pilot wheelsswing beneath this roller in such a manner as to transfer its positionon the slide toward the outside pilot wheel on the curve. In other permit of the swingmg of a half elliptic spring between them. Thisbolster is built up in truss form of two flat bars of a thickness andwidth suitable for the car bodies to be carried. These bars aretrussed by the adjustable posts. Secured to the top bar of the bolsterare the regular King side bearing springs to provide for a slightrocking motion of the car body. The bolster is supported at eachend by one or more half elliptic springs. The number depending on. FIG. 6—NO. 15. EXTRA STRONG TRIPLE CUSHIONED SWING BOLSTER TRUCK. words, the pressure transmitted to the pilot wheels through theroller is the same whether the truck is on a curve or on a tangent, buton a curve is so distributed that a greater portion is thrown on theoutside pilot wheel than on the inside, consequently preventing theflange of the outside pilot wheel from riding the rail. The side frameof the truck is built on the cantilever principle common to all Peck-ham trucks, and is provided with a yoke for the pilot wheels sufifi-ciently low to swing under the steps of an open car.
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License: Licensed
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
