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Adding Machine.

Description: Patent for a new and improved adding machine using rotating discs.
Date: December 8, 1914
Creator: Druschke, Julius C.
Partner: UNT Libraries Government Documents Department

Clothes-Pin.

Description: Patent for a new type of clothing pin that allows it to be permanently attached to the clothing line.
Date: May 8, 1917
Creator: Boynton, Willie A.
Partner: UNT Libraries Government Documents Department

Combination Valve-Cap and Tire-Deflator.

Description: Patent for a device which serves both as a cap for a tire valve and a tool for letting air out of said tire valve.
Date: March 8, 1921
Creator: McComb, William P.
Partner: UNT Libraries Government Documents Department

Adjustable End Die.

Description: Patent for improvements to adjustable end dies. These improvements allow convenient rethreading of bolts while it is engaged with an object.
Date: February 8, 1921
Creator: Wright, John G.
Partner: UNT Libraries Government Documents Department

Condensing Apparatus

Description: Patent for a condensing apparatus designed to be attached to linting machines.
Date: April 8, 1919
Creator: Martin, G. W.
Partner: UNT Libraries Government Documents Department

Combination Muffler and Air-Heating Device

Description: Patent for improvement for the muffler to silence the explosive exhaust of the internal combustion engines and to heating fresh air in facilitating the carburetion of liquid fuel oil to a combustible gaseous mixture.
Date: October 8, 1918
Creator: Rinehart, Thomas M.
Partner: UNT Libraries Government Documents Department
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