Resilient Wheel. (open access)

Resilient Wheel.

Patent for "certain new and useful Improvements in Resilient Wheels" (lines 5-6) including specifications and illustrations.
Date: May 25, 1915
Creator: Martin F. Kettler
System: The Portal to Texas History
Rudder-Bar for Aeroplanes. (open access)

Rudder-Bar for Aeroplanes.

Patent for improvement in aeroplanes, especially to the steering mechanism which allows for the rudder to be locked in position so the aviator can remove their feet from the steering bar.
Date: May 25, 1920
Creator: McMullen, William H.
System: The Portal to Texas History