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Device for Cleaning Wells

Description: Patent for improving the efficiency of oil wells.
Date: September 2, 1919
Creator: Sargent, Lemuel S.
Partner: UNT Libraries Government Documents Department

Molding Device

Description: Patent for the improvement of multi-pieced molds through the introduction of a gate and tube that allows for rapid coring of a mold.
Date: December 2, 1919
Creator: Hawkins, Alda F.
Partner: UNT Libraries Government Documents Department

Apparatus for Curing Tire Casings.

Description: Patent for a more efficient system for curing tire casings. The new patented apparatus was capable of providing both smooth and ribbed tire textures by way of aluminum tips and molds. Additionally, the apparatus provided retreading and faster curing of pneumatic tires.
Date: December 2, 1919
Creator: Bongio, Philip P. & Stephenson, Elonzo
Partner: UNT Libraries Government Documents Department
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