Spring Axle (open access)

Spring Axle

Patent for an axle to provide assistance to the wheel to adapt to the irregularities of the surface.
Date: June 10, 1913
Creator: Coggin, Charley J.
System: The Portal to Texas History
Windmill (open access)

Windmill

Patent for Windmill Improvements that includes a mounted rotor for horizontal rotation, including illustrations.
Date: June 28, 1913
Creator: Henning, Thomas W.
System: The Portal to Texas History
Pump-Filter. (open access)

Pump-Filter.

Patent for a pump filter, designed for double acting air pumps, that prevents the passage of foreign matter (oil, dust, dirt) from the pump outlet.
Date: November 25, 1913
Creator: Miles, Ross E.
System: The Portal to Texas History
Air Pump (open access)

Air Pump

Patent for an air pump for the delivery of air to the tire of a wheel.
Date: April 15, 1913
Creator: Scott, Charles Mack
System: The Portal to Texas History
Powder Blower (open access)

Powder Blower

Patent for a new and improved powder blower used to insert powder medicine into the vagina, including illustrations and instructions.
Date: April 1, 1913
Creator: Woodward, Mortimer Lee
System: The Portal to Texas History