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Vehicle-Wheel.

Description: Patent for a vehicle wheel that has hub casings, which keep the lubricating oil inside and dirt outside.
Date: October 31, 1911
Creator: Tatum, Franklin M.
Partner: UNT Libraries Government Documents Department

Double Stroke Pumping Jack

Description: Patent for a double-stroke pumping jack with two pistons in the same cylinder "to discharge a steady stream of water therefrom" (line 12-13). This invention allows the pipe cylinder and pistons to be easily removed for repairs or cleaning.
Date: March 16, 1915
Creator: Winterborne, William H.
Partner: UNT Libraries Government Documents Department
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