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Automatic Pipe Coupling

Description: Patent for improvement on the methods of controlling oil flow.
Date: September 2, 1919
Creator: Childs, William L.
Partner: UNT Libraries Government Documents Department

Valve Remover.

Description: Patent for "an improvement in combination tools...adapted for use with internal combustion engines...mechanism is provided for assisting in valve removing." [lines 8-14]
Date: December 2, 1919
Creator: Ingram, George W.
Partner: UNT Libraries Government Documents Department

Well-Boring Apparatus

Description: Patent for a new and improved well-boring apparatus that rotates a drill stem. The drill is then elevated when it is desired to unscrew the joints.
Date: September 2, 1919
Creator: Headrick, James O.
Partner: UNT Libraries Government Documents Department

Well Capping Device.

Description: Patent for "new and useful improvements in a well capping device." [lines 9-10]
Date: December 2, 1919
Creator: Thrift, Homer C.
Partner: UNT Libraries Government Documents Department

Device for Forming Screens

Description: Patent for a device for forming screens that consist of perforated pipes and screening wires, which will prevent displaced wires and torn pipes during use.
Date: December 2, 1919
Creator: Edwards, Charles R.
Partner: UNT Libraries Government Documents Department

Automobile-Lock.

Description: Patent for a padlock and mount for the steering column of an automobile.
Date: December 2, 1919
Creator: Ritchie, Allen A.
Partner: UNT Libraries Government Documents Department
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