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Grease Dispensing Pump

Description: Patent for improvements upon "grease-dispensing pumps"(line 7) which removes old grease and dispenses "mobile grease"(line 13) easily to machinery.
Date: June 3, 1919
Creator: Miller, Charles R.
Partner: UNT Libraries Government Documents Department

Concrete-Mixer.

Description: Patent for a concrete mixer that keeps the materials low to the ground and has improved mixing and delivery mechanisms.
Date: October 3, 1911
Creator: Foley, Charles H.
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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