Patent ID: 6550722
Filing Date: 2003-04-22
Classification: E01B

Abstract:
A tongue box for grooved rail switches, which includes a stock rail (2), a slide plate (5) and a side rail (3), whereby the side rail (3) and the slide plate (5) and a base plate (4) are welded together forming a box-shaped section with the stock rail (2), wherein the stock rail (2) is connected with the box-shaped section in a positive and force-transmitting manner by clamping pieces that are welded with the box-shaped section and/or the base plate (4), wherein the clamping pieces include at least a flange sleeve (14) inserted through an opening (13) of a rail web (10) of the stock rail (2) and connected with the box-shaped section by a shrink weld, and a flange (16) of the flange sleeve (14) overlaps the opening (13) of the rail web (10) of the stock rail (2) on the external side facing away from the box-shaped section.