4 Matching Results

Search Results

Advanced search parameters have been applied.

Jail

Description: Patent for community style jails, eliminating single-cell jail housing.
Date: 1913-6-24
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

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

Door Operating Means

Description: Patent for a mechanism to operate jail doors. The mechanism is "operated with a single movement of the hand to open and close a plurality of doors simultaneously" (14-19). Illustrations included.
Date: June 25, 1912
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department