Improvement in Rotary Engines. (open access)

Improvement in Rotary Engines.

Patent for improvements in valves used in rotary engines.
Date: May 9, 1871
Creator: Hughes, Robert
System: The Portal to Texas History
Thill-Support (open access)

Thill-Support

Patent for a thill support designed to support the thill "without having the weight thrown upon the circle or fifth wheel" (lines 14-15), and may be adjusted to a variety of vehicles. Illustrations included.
Date: February 9, 1909
Creator: Story, Sam H
System: The Portal to Texas History
Plow and Sweep Holder (open access)

Plow and Sweep Holder

Patent for a holder for plows and sweeps. Illustrations included.
Date: February 9, 1909
Creator: French, Alfonso Claude
System: The Portal to Texas History