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in creator/contributor: "Parker, R. L."  
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Wire-Screen Frame.

Description: Patent for a more economical, foldable wire screen frame for doors with removable wire mesh, and included illustration.
Date: December 18, 1917
Creator: Carroll, Houston Monroe
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lawn-Sprinkler.

Description: Patent for an inexpensive lawn sprinkler that serves the dual purpose of connecting to a hose to spread the water over a broad area and of holding a hose stationary to water a single area.
Date: December 11, 1917
Creator: Schneider, Gustav H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Mechanical Rectifier.

Description: Patent for a mechanical rectifier for automobiles. This mechanical rectifier connects with the magneto or generator to turn alternating currents into to direct currents for charging a storage battery while operating the engine.
Date: January 29, 1918
Creator: Winterborne, Arthur William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Scoop

Description: Patent for a self adjusting scoop, that can be used to measure quantities of items such as grain, and contains the component of a self leveler for accuracy.
Date: October 24, 1916
Creator: Read, William W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Power Multiplying Mechanism

Description: Patent for object that provides "a comparatively simple mechanism for multiplying the efficient power of a prime mover of any well known types" and "designed to conserve and utilize kinetic energy and apply momentum with the utmost economy in order to retain the result sought."
Date: September 26, 1916
Creator: Dominguez, Salvador
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Photographic-Printing Apparatus.

Description: Patent for photographic printing apparatus for printing photographs from film or plate which aims to improve on previous models by making "the printing operation easy and efficient" (lines 20-21) including illustrations.
Date: June 13, 1916
Creator: Welsh, Monte
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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