Reversible wing insert frog

Details Reversible wing insert frog Reversible wing insert frog

1995-10-02

1996-10-01

Le, Mark T.

Railway switches and signals

Crossings, frogs, and mates

Frogs

246460, E01B 700

Patent

active

055605710

ABSTRACT:
A railroad trackwork railbound frog assembly having a toe point element is provided with a pair of spaced-apart wing rail elements each having a notch recess feature, a pair of reversible and interchangeable spaced-apart wing rail insert elements, usually fabricated of a manganese alloy steel or a high-strength, low-alloy steel material that is harder than the material from which the wing rail elements are manufactured, installed in abutting relation to the wing rail element notch recesses, spacer blocks that maintain the separations between the toe point, wing rail, and wing rail insert elements, and bolt-type fastener devices joining the elements of the frog assembly into a unitary structure.

REFERENCES:
patent: 693210 (1902-02-01), Angerer et al.
patent: 747955 (1903-12-01), Entwisle
patent: 1246418 (1917-11-01), Goldsmith
patent: 1636373 (1927-07-01), Leedom
patent: 5312075 (1994-05-01), Kuhn
patent: 5456430 (1995-10-01), Ortiz-Rivas

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