Patent ID: 7469641

Claim:
A railway truck comprising: a first side frame, and a second side frame, each side frame having a front end, a rear end, and a spring window formed intermediate the front end and the rear end, the spring window having a support platform, a first and second side column on the support platform, the first side column adjacent the front end, a second side column on the support platform adjacent the rear end, the first and second side columns spaced from each other, and a top traversing the first and second side columns, the top spaced from the support platform; a spring group on the support platform, the spring group comprising at least one load spring and at least one control spring on the first side frame, each spring having a top, a bottom, an outside, an inside, and a cavity defined on the top of the load spring extending to the inside, the spring bottom on the support platform; a bolster having first end, a second end, and a bottom, the bolster first end in the spring window of the first side frame, the bolster first end slidably connected to the first side frame, the second end in the spring window of the second side frame, the second end slidably connected to the second side frame; a spring receptacle on the first end, a control spring pocket on the spring receptacle, the top of the control spring in the control spring pocket, a first spring guide on the spring receptacle, the spring guide having a chamfer adjacent the control spring pocket, the chamfer adapter to urge the control spring into the control spring pocket, and wherein the first spring guide further comprises a base and a tip, the base on the spring receptacle, the tip spaced from the base, the chamfer depending from the base.