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Railways

The means of conveyance of passengers and goods by way of wheeled vehicles running on rail tracks.

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Railways > Railroad

frog rigid bolted

Railways; Railroad

A frog built entirely of rolled rails, with fillers between rails, and rigidly held together with bolts.

toe end of frog

Railways; Railroad

The end of a frog nearest the switch.

frozen joint

Railways; Railroad

A joint so tight that the rails cannot move as temperature varies.

toe spread

Railways; Railroad

The distance between gage lines at the toe end of the frog.

fusee

Railways; Railroad

A pyrotechnic signaling device carried by train crews and track workers. When ignited it burns with a red light for a short period of time. A fusee may be dropped from the rear of ...

tolerance

Railways; Railroad

An allowance made for a small variation from dimensions specified.

gage line

Railways; Railroad

A line five-eighths inch below the running surface of a rail on the side of the head nearest the track center; the line from which measurements of gage are made.

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