Machine for Raising and Lowering Railway-Tracks and Applying Ballast Thereto. (open access)

Machine for Raising and Lowering Railway-Tracks and Applying Ballast Thereto.

Patent for machines designed for "raising and lowering railway-tracks and applying ballast thereto." (lines 11-12) including illustrations.
Date: January 6, 1914
Creator: Sparks, Walter F.
System: The Portal to Texas History