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Hydrocarbon-Burner.

Description: Patent for improvements in hydrocarbon burners that is inexpensive and can take refined oil or heavy crude oil and make it useable as fuel.
Date: July 27, 1920
Creator: St. Wrba, Joseph J.
Partner: UNT Libraries Government Documents Department

Pipe-Wrench.

Description: Patent for a pipe wrench that can be "operated in either direction" (line 18) to screw and unscrew a pipe with an easy application and secure grip.
Date: April 27, 1920
Creator: Nixon, Jeddy D.
Partner: UNT Libraries Government Documents Department
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