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Well Pumping Apparatus

Description: Patent for well pumping apparatus. This invention is designed for the improvement of pumping liquid from deep wells. Illustration included.
Date: September 29, 1908
Creator: Stephenson, William M.
Partner: UNT Libraries Government Documents Department

Hydraulic Swivel

Description: Patent for a hydraulic swivel. Illustrations included.
Date: September 26, 1905
Creator: Thomson, Alexander & McLaughlin, Malacha Joseph
Partner: UNT Libraries Government Documents Department

Plunger.

Description: Patent for a plunger for water and oil wells, which will withstand heavy use.
Date: September 14, 1909
Creator: Karnes, Harry E.
Partner: UNT Libraries Government Documents Department

Engine Valve Mechanism

Description: Patent for an engine valve mechanism. This invention is a "class of steam engines wherein the cylinder-inlet and exhaust-ports are controlled by separate and distinct values." Illustration included.
Date: September 5, 1905
Creator: Moore, Ezra G. & Moore, Frank T.
Partner: UNT Libraries Government Documents Department

Screw-Gearing

Description: Patent for screw-gearing for motors, particularly motors for fans or similar objects, including illustrations.
Date: September 18, 1900
Creator: Paker, Oren A.
Partner: UNT Libraries Government Documents Department
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