the main rail.They are cut away below (as shown in Fig. 3) to receive themain rail as they are closed together to form a continuousswitch rail. This rail is lapped on a joint that is parallel,with the median line of the main rail, so that the wheelsmay be carried upward and over the uain rail… … BECOBDEB FOB SOTTND VISBAtlONS. The end of the switch rail, B,has a side extension, g, whichis narrow at the end of the rail,and grows gradually wider andhigher, and is provided with aflange along its outer and upperedge, which serves as a guide to the car wheel, and pushesthe wheel over, while it…
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-495-285.webp)
