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Cooking-Stove

Description: Patent for a cooking stove that can be easily replaced with a new one if it breaks.
Date: December 3, 1912
Creator: Earnest, Mettie C.
Partner: UNT Libraries Government Documents Department

Combined Concentrator, Amalgamator, and Separator

Description: Patent for improvements to a Combined Concentrator, Amalgamator, and Separator used for ore and gravel.
Date: December 3, 1901
Creator: Journeay, William O.
Partner: UNT Libraries Government Documents Department

Acetylene-Gas Generator.

Description: Patent for "an improved apparatus for generating acetylene gas" (lines 12-13). The apparatus includes a carbid receptacle with a conical bottom and a cylindrical valve for better control of the carbid, as well as a gas tank with a gasometer-bell which operates the system.
Date: December 3, 1918
Creator: Lay, Claud
Partner: UNT Libraries Government Documents Department

Coupling.

Description: Patent for a coupling invention that consists of a detachable key member and locking key member for a valve plug. It is meant to improve couplings for detachable handles of drain-cocks.
Date: December 3, 1918
Creator: Copeland, Joe S.
Partner: UNT Libraries Government Documents Department
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