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Combined Pneumatic Lift and Force Pump.

Description: Patent for a combined pneumatic lift and force pump, which is able to reach the inexhaustible supply of water found at the depths of five to forty or more feet in the arid region of Texas and Great Central Valley of Mexico. The machinery perfects the simplicity and economy of construction needed to reach and lift a great volume of water in a short time.
Date: May 6, 1913
Creator: De Hymel, Franklin Oscar
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

COTTON CLEANER

Description: This is a patent for a Cotton Cleaner. This new cotton cleaner is able to use air to rotate the rotors to then separate the dirty cotton from the clean cotton.
Date: May 6, 1919
Creator: Cabrera, Maragarito
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electric Soldering-Iron

Description: Patent for an improved electric soldering iron, "to provide novel means for permitting the flow of solder and for shutting it off" (lines 18-19), including illustrations.
Date: May 6, 1913
Creator: Giffen, Frank M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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