Frog insert and assembly and method for making frog assembly
AssigneeVAE Nortak North America Inc.
InventorsJacqueline Ramirez, Al Forshaw, Gary Click
Life of this patent
Estimating the term…
Abstract
An improved cast insert for a railway frog has two extensions extending in substantially the same direction away from the body portion of the casting and the end of each of the extensions has a cross sectional profile corresponding to the profile of the head and web of a rail but including only one side of what would normally be the base of a rail. A frog assembly is made by providing such an insert, machining each of two rails to also remove one side of the base near the end of the rail and attaching the machined end of each of the two rails to the end of one of said extensions such that the sides of the rails from which the base has been machined away face one another.
Claims12
The method of manufacturing a frog assembly comprising the steps of:
- providing a single piece cast insert for a railway frog, said insert comprising a toe end, a point of frog, a heel end, and a body portion extending between said toe end and said heel end, two extensions extending from said heel end in substantially a same first direction away from said body portion, each of said extensions having an end defining a cross sectional profile corresponding to a head of a rail, a web of a rail, and only one side of a base of a rail such that the sides of the extensions from which there is no base face one another;
- machining each of two rails so as to remove one side of a base of each rail near the end of the rail;
- and
- attaching the machined end of each of the two rails to the ends of respective ones of said extensions such that the sides of the rails from which the base has been machined away face one another.
The method of manufacturing a frog assembly comprising the steps of:
- providing a cast insert, said insert comprising a toe end, a point of frog, a heel end, a body portion extending between said toe end and said heel end, and two extensions extending generally in one direction from said body portion and being generally adjacent to one another, each of said extensions having an end defining a cross sectional profile corresponding to a partly enlarged cross-sectional profile of a rail, said cross-sectional profile of a rail consisting of a head of a rail, a web of a rail and a base of a rail;
- machining each of said extensions to give each of said extensions the cross sectional profile of a rail save for the portion of the base of said rail extending from the web of the rail toward the adjacent one of said extensions;
- machining one end of a first rail so as to match the profile of one of said extensions and machining one end of a second rail so as to match the profile of the other of said extensions;
- and
- attaching the machined ends of said rails to the respective extensions to which their profiles are matched.
Dependencies are inferred from the claim text.