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Railroad Frog

Posted by Jim on January 12, 2002

Intersecting railroad tracks cross through each other on a special track section called a railroad frog. Any clues how it became known as a frog other then a visual similiarly to a crushed, splayed and dried real frog?

Some explanation if curious:
http://www.romarpipeandrail.com/turnouts__&_switch_components.htm

or

www.web.mit.edu/Invent/www/InventorsR-Z/Westinghouse.html