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Lifting-Jack

Description: Patent for an improvement made to lifting jack machinery that raises automobiles for repairs. The patent prevents the axle from slipping in circumstances where the vehicle is on slippery grounds or parked on a hill. Includes illustrations.
Date: May 10, 1921
Creator: Watson, Chester A.
Partner: UNT Libraries Government Documents Department

Insect Destroyer.

Description: Patent for an wheeled vehicle mounted insect destroyer that brushes insects from plants and destroys them utilizing flames, includes illustrations.
Date: June 13, 1922
Creator: Franks, John L.
Partner: UNT Libraries Government Documents Department

Maize-Header.

Description: Patent for simple and efficient maize header which is easy to operate by positioning it in a way that it needs minimum effort to operate.
Date: May 17, 1921
Creator: Jordan, Andrew P.
Partner: UNT Libraries Government Documents Department
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