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Culvert.

Description: Patent for metal road culvert improvements. Light weight, but sturdy, interlocking metal sheets are used. They can be stacked for cheaper and easier shipping. The culvert allows large amounts of water to flow through.
Date: April 22, 1913
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

Railroad-Signal.

Description: Patent for a new Railroad-Signal invention. The Railroad-Signal functions as an improved device for alerting locomotive engineers that an upcoming bridge is broken, flooded, or on fire.
Date: February 25, 1913
Creator: Waddle, Calvin H. & Roberston, Everett C.
Partner: UNT Libraries Government Documents Department