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Tier.

Description: Patent for a retractable and reusable package tie device for packages.
Date: December 21, 1915
Creator: Clary, Irvin W.
Partner: UNT Libraries Government Documents Department

Multiple Gearing

Description: Patent for a new and useful improvements in multiple gearing. This invention "relates to improvements in a multiple gearing for bicycles, vehicles, locomotive-engines, traction devices" (line 11-13).
Date: December 21, 1897
Creator: Cary, Lewis C.
Partner: UNT Libraries Government Documents Department

Process of Vaporizing Liquids.

Description: Patent for an engine designed for combustion of kerosene with air. The patent notes improvements for regulating the mixture ratios and maximizing efficiency by heating the air intake.
Date: December 21, 1920
Creator: McClintock, Charles Davis
Partner: UNT Libraries Government Documents Department

Door Brace

Description: Patent for a door brace. Illustration included.
Date: December 21, 1909
Creator: Friberg, Charles
Partner: UNT Libraries Government Documents Department

Automatic Train-Stop.

Description: Patent for mechanism to automatically sound alarm and shut off steam when a train passes a danger point.
Date: December 21, 1915
Creator: Bulla, Melbern Bernie
Partner: UNT Libraries Government Documents Department
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