Patent ID: 8262033

Claim:
A derail assembly for derailing a wheel of a wheeled railway vehicle movable along a pair of laterally spaced rails, said rails having a field side and a gage side, wherein railroad ties are securely and transversely mounted on said rails, each of said ties having upright side walls, each of said rails having upper and lower flanges interconnected by a central upright unitary support, said derail assembly comprising, in combination, an elongated rigid derail plate having an upper side and an under side, said under side being in direct contact with said upper flange of one of said rails, said elongated rigid derail plate having a wheel entrance end and a wheel exit end and being longitudinally spaced from said wheel entrance end, an upright derail bar which is securely mounted on the upper side of said derail plate, said upright derail bar being angled outwardly from said wheel entrance end to said wheel exit end for engaging a wheel of said vehicle when moving undesirably along said rails to thereby cause desired derailment toward said field side of said undesirably moving vehicle, a pair of longitudinally spaced upright rigid members secured to the under side of said derail plate, said upright rigid members being transversely spaced from said one rail on the gage side thereof, said upright rigid members defining an open area between said upright rigid members, said open area having a predetermined lateral distance between said upright rigid members, one of said ties being positioned within said open area and between said upright rigid members, said side walls of said one tie being secured between said upright rigid members, longitudinally spaced hook members secured to said derail plate at said wheel entrance end and at said wheel exit end, said hook members securing said derail assembly on the field side of said one rail, and a clamp assembly secured to said derail plate on said gage side of said one rail opposite said hook members, said clamp assembly and said hook members cooperating for assisting in securing said derail assembly to said one rail while said upright rigid members are securely positioned between said side walls of said one tie.