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Rudder-Bar for Aeroplanes.

Description: 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.
Partner: UNT Libraries Government Documents Department

Oil Burner

Description: Patent for an improved oil burner design that uses steam to heat and vaporize the oil, mixing with the oil for more efficient burning, including an illustration.
Date: April 7, 1914
Creator: Tinkham, George F.
Partner: UNT Libraries Government Documents Department

Broaching-Press

Description: Patent for a device used with metal-working machines that provides more efficient finishing.
Date: December 25, 1900
Creator: Baker, Jason A.
Partner: UNT Libraries Government Documents Department

Railway Rail Tie.

Description: Patent for a new and improved railway-rail tie. This design consists "of a railway-rail tie provided with a transverse recess, projection, the transverse slots, and the apertures leading from the recesses to the slots, the retaining-blocks fitting in the apertures, and keys working in the slots and adapted to press the retaining-blocks against the flange and web of the rail" (lines 71-78).
Date: December 17, 1889
Creator: Jones, Richard
Partner: UNT Libraries Government Documents Department
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