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Improvement in Machines for Making Plow-Irons. (open access)

Improvement in Machines for Making Plow-Irons.

Patent for an improvement in the design for machines for manufacturing plow irons, including illustrations.
Date: March 4, 1873
Creator: McGinty, James M. & Nolan, Thomas.
System: The Portal to Texas History
Improved Saw-Gummer. (open access)

Improved Saw-Gummer.

Patent for a machine that uses a grindstone to sharpen rotary saws. Includes instructions and illustrations.
Date: July 4, 1865
Creator: Fosterm A. K.
System: The Portal to Texas History