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Window-Shade-Operating Device

Description: Patent for a window-shade-operating device that "revolv[es] the shade roller and [retains] the roller in position whereby the shade is held at the desired point" (lines 14-17).
Date: December 16, 1919
Creator: Minnis, Henry M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Internal-Combustion Engine.

Description: Patent for improvements for internal combustion engines. Improvements include a more compact design, easier to access for repairs, and increased durability and efficiency.
Date: June 17, 1919
Creator: Ward, John Price
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Dirigible Headlight

Description: Patent for new design for dirigible headlights by Mr. Hall B. Simpson and Mr. Dewitt Hood, designed with the intention of providing "novel and improved means whereby the headlights are supported by the automobile or other vehicle for turning movement about vertical axes," alongside various innovative applications (lines 23-27).
Date: December 16, 1919
Creator: Simpson, Hall B. & Hood, Dewitt
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Device for Making Vessels Invisible.

Description: Patent for improvements in "air and water craft" (line 13) invisible including illustrations. These improvements include invisibility through "plurality of plates or sections" (lines 18-19) and diffuse light, disguising the vessels.
Date: July 15, 1919
Creator: Chaddick, Mark
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Engine.

Description: Patent for a simplified rotary engine which uses steam, compressed air and other elastic fluids which act as motive fluid. This patent is special in that it is light and compact. This patent helps the engine start easily, reverse, and stop, as well as other types of motion.
Date: January 8, 1919
Creator: Campbell, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electrically-Heated Boiler

Description: Patent for an electrically-heated boiler that provides a "compact structure which occupies a minimum amount of space" (line 11-12) while still being a reliable machine.
Date: November 25, 1919
Creator: Fleming, George
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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