Railroad frogs

Details Railroad frogs Railroad frogs

1979-09-21

1982-12-07

Eisenzopf, Reinhard J.

Railway switches and signals

Crossings, frogs, and mates

Frogs

E01B 710

Patent

active

043622828

ABSTRACT:
Railbound frogs for track work installation and so constructed as to strengthen the heel extension, to resist movement of the running rails away from the heel end of the frog and to prevent damage due to what is known as a "false flange" on the car wheel.

REFERENCES:
patent: 1044508 (1912-11-01), Elfborg
patent: 2690316 (1954-09-01), Mahood
patent: 4081162 (1978-03-01), Frank

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