UNT Libraries Government Documents Department - 4 Matching Results

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Plow.

Description: Patent for a new type of wing plow with new improvements designed to prevent earth from being thrown onto previous plants.
Date: March 13, 1917
Creator: Moore, William F.

Pump.

Description: Patent for a "pump for effectively pumping oil or quicksand from wells troubled with quicksand." (Lines 8-10) Includes instructions and illustrations.
Date: March 30, 1897
Creator: Wintz, James Philip

Pump-Piston.

Description: Patent for new and improved pump piston. This patent is accompanied by drawings and the object is to provide a pump piston wherein the the piston body proper is securely maintained against shifting upon the piston rod.
Date: March 22, 1921
Creator: Yount, Miles F.
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