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Crude-Oil Burner.

Description: Patent for an improvement on a crude oil burner that can adapt to various grades of crude oil as well as providing intense heat to various sizes of boilers.
Date: May 11, 1920
Creator: Runyan, Benjamin F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Concrete Wall Mold.

Description: Patent for "a concrete wall mold which is so constructed as to produce a very strong wall having vertically extended channels which form ribs materially reinforcing the structure" (lines 10-14)
Date: June 11, 1920
Creator: Porter, Charles S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Center-Gage and Micrometer

Description: Patent for improvements to a center gage and inside micrometer to "provide central support for dividers" (lines 15-16) including illustrations.
Date: January 11, 1921
Creator: Snell, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tie-Buckle.

Description: Patent for the improvement of tie buckles, specifically for bales of cotton at cotton gins. The paten includes an illustration of the tie buckle, explanations on how to easily use it, and why it is useful for cotton farming.
Date: January 11, 1921
Creator: Wallace, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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