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Railroad Tie

Description: Patent for metallic railroad ties. This invention is for a solid state tie. It uses extending bolts to lock the ties into place. Illustration included.
Date: November 19, 1907
Creator: Mayo, William C.; Houlehan, John & Briggs, George Edwin
Partner: UNT Libraries Government Documents Department

Gas Engine

Description: Patent for gas engine. Illustrations included.
Date: November 19, 1907
Creator: Houlehan, John & Mayo, William C.
Partner: UNT Libraries Government Documents Department

Shears and Tension-Screw.

Description: Patent for shears with a tension spring that don't require the use of a screwdriver to fix or adjust, last longer, keep the blades more even, and don't pinch one's hands while using them.
Date: February 19, 1907
Creator: Wilkins, Willis A.
Partner: UNT Libraries Government Documents Department
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