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Well-Screen Washer and Perforator.

Description: Patent for a device that is used to wash a screen set in an oil well and perforate the pipe the screen is attached to.
Date: March 25, 1919
Creator: Wilkirson, Aaron L.
Partner: UNT Libraries Government Documents Department

Detachable Automobile Spring-Tire.

Description: Patent for a detachable automobile leaf spring tire. This invention would provide a tire of simple construction with leaf springs and will have a secure connection of the inner and outer tire parts.
Date: March 25, 1919
Creator: La Bauve, Lillie W.
Partner: UNT Libraries Government Documents Department

Footboard-Brace for Vehicles.

Description: Patent for footboard-brace for vehicles that are adapted to be supported from the vehicle frame and is also adjustable.
Date: March 25, 1919
Creator: Beyer, Daniel A.
Partner: UNT Libraries Government Documents Department

Car Wheel.

Description: Patent for a new and improved car wheel. This design "consists in the combination, with a railroad-car axle having wheel-bearings of equal diameter throughout their whole lengths, of wheels the peripheries of which are provided with central flanges dividing each into two treads, the said wheels adapted to be pressed on the said bearings aforesaid, and to be removed therefrom, reversed, and again pressed thereon whenever the wear of the first tread shall render the same necessary" (lines 12-21).
Date: March 25, 1884
Creator: Melvin, Josiah W. & Clute, William H.
Partner: UNT Libraries Government Documents Department

Bulkhead.

Description: Patent for bulkhead that is "adapted for use as a sea wall or quay wall" (lines 10-11).
Date: March 25, 1919
Creator: Sands, Edward E.
Partner: UNT Libraries Government Documents Department

Aeroplane.

Description: Patent for an improved rotary airplane engine patterned after the Gnome type with extra blades attached to the engine cylinders.
Date: March 25, 1913
Creator: Decker, Harry R.
Partner: UNT Libraries Government Documents Department
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