초록 ▼

An improved frog is provided with an interchangeable insert for a railroad turnout, such as a frog or crossing. The frog has a new modular interchangeable insert, which permits easy changing of worn pieces in situ. The insert is a solid, unitary piece of high strength steel of two different geometri

An improved frog is provided with an interchangeable insert for a railroad turnout, such as a frog or crossing. The frog has a new modular interchangeable insert, which permits easy changing of worn pieces in situ. The insert is a solid, unitary piece of high strength steel of two different geometrical shapes. An upper part of the insert is triangular in shape having a flat or planar base surface. A lower part of the insert is of a rectangular, planar sided member of box shape and serves as the web, running from the front to rear of and through the center and beneath the triangular upper part.

대표청구항 ▼

In a railroad flog where first and second wing rails converge toward each other to form a juncture with first and second point rails, an improved railroad frog comprising: a heel filler block member mounted between the first and second point rails and forming a connection between them; a first wing

In a railroad flog where first and second wing rails converge toward each other to form a juncture with first and second point rails, an improved railroad frog comprising: a heel filler block member mounted between the first and second point rails and forming a connection between them; a first wing filler member mounted extending forwardly from the end of said first wing ratio; and parallel 19 a side of said heel filler block, said first wing filler member forming a connection between said first point rail and said first wing rail; a second wing filler member mounted extending forwardly from the end of said second wing rail and parallel to a side of said heel filler block, said second wing filler member forming a connection between said second point rail and said second wing rail; said first and second wing filler members forming a central, vertically extending gap between them along their forward extent and having a flat upper surface formed on each of them adjacent said gap; and an interchangeable insert having a triangular upper body member which serves as a contact for the rolling stock, and further including a flat lower surface formed thereon; said insert further having a central bar extending, vertically downwardly from said lower surface of said upper body member; said central bar having uniform horizontal thickness and having a lower surface forming a bottom surface of the interchangeable insert; said central bar being inserted in said gap formed between said first and second wing filler members; and said lower surface of said upper body member being mounted on said flat upper surfaces formed on said first and second wing filler members.