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Two-Stage Pump

Description: Patent for a two stage pump. Illustrations included.
Date: July 12, 1910
Creator: Gray, William T.
Partner: UNT Libraries Government Documents Department

Spark-Plug

Description: Patent for new improvements in Spark-Plugs which decreases the possibility of imperfect sparking and provides a visible indication if the spark plug is not working properly.
Date: July 28, 1914
Creator: Cole, Emory W.
Partner: UNT Libraries Government Documents Department

Traction-Wheel.

Description: Patent for a traction wheel that has improved traction on muddy ground.
Date: July 12, 1910
Creator: Larson, Louis O.; Larsen, Arvid R. & Johnson, Sigfried
Partner: UNT Libraries Government Documents Department

Spring-Clip Tool.

Description: Patent for "putting back spring or axle clips where the clip is slightly bent and difficult to replace by hand, the tool serving as a convenient means for bending and forcing the clip in place without injuring the threads thereon" (lines 19-23), with illustrations.
Date: July 1, 1919
Creator: Stark, Gara Roscoe
Partner: UNT Libraries Government Documents Department

Bed-Spring Tightener

Description: Patent for improvements in bed-spring tighteners, for adjusting the tension of a bed spring supporting wire as may be required. Illustration is included.
Date: July 5, 1910
Creator: Tlustos, Joseph J.
Partner: UNT Libraries Government Documents Department
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