Resource Type

Bed-Spring Tightener (open access)

Bed-Spring Tightener

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.
System: The Portal to Texas History
Two-Stage Pump (open access)

Two-Stage Pump

Patent for a two stage pump. Illustrations included.
Date: July 12, 1910
Creator: Gray, William T.
System: The Portal to Texas History
Spark-Plug (open access)

Spark-Plug

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.
System: The Portal to Texas History
Traction-Wheel. (open access)

Traction-Wheel.

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
System: The Portal to Texas History
Spring-Clip Tool. (open access)

Spring-Clip Tool.

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
System: The Portal to Texas History