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Valve-Closure for Ventilators

Description: Patent for a new valve-closure for ventilators on plumbing systems by W.L. Hamilton and G. McCullough.
Date: December 20, 1917
Creator: Hamilton, William L. & McCullough, George
Partner: UNT Libraries Government Documents Department

Spool and Work Holder.

Description: Patent for a spool and work holder, which is in the shape of a bird and has places to store spools of thread, a pincushion, and a storage place for a piece of work.
Date: September 20, 1910
Creator: Culver, Katherine
Partner: UNT Libraries Government Documents Department

Process of and Apparatus for Hydrogenating Fats, Oils, Waxes, and the Like.

Description: Patent for the Process of and Apparatus for Hydrogenating Fats, Oils, Waxes, and the like. The invention is related to the improvement of the effective the hydrogenation process of fats, oils, waxes, and similar materials.
Date: August 20, 1918
Creator: Walker, Thomas Bailey
Partner: UNT Libraries Government Documents Department
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