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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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Mechanical Toy Hoop

Description: Patent for improved features for mechanical toy hoops, particularly for toys utilizing trundling hoops.
Date: September 5, 1916
Creator: Giesecke, Leo
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Stand-Value for Oil-Well Pumps.

Description: Patent for a Stand-Value for Oil-Well Pumps so that the ball seat in an oil well pump does not work loose. This is also meant to be turned end for end so that the part's life is lengthened. With this being done, the utility of the oil-pump should now be enhanced.
Date: September 24, 1918
Creator: Slaughter, George W., Jr.
Item Type: Refine your search to only Patent
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.
Item Type: Refine your search to only Patent
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.
Item Type: Refine your search to only Patent
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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Spring-Wheel

Description: Patent for a wheel supported by spring spokes. Illustrations included.
Date: September 24, 1912
Creator: Hudson, Alexander S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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