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Combined Tie-Plate and Rail Anticreeper

Description: Patent for a railroad tie plate designed to remained locked to the base of the rail and to prevent dislocation of the base. Illustrations included.
Date: March 29, 1910
Creator: Clarke, Marcus S. & Adreon, Edward L., Jr.
Partner: UNT Libraries Government Documents Department

Ballot-Box

Description: Patent for a ballot box using black and white balls.
Date: March 4, 1902
Creator: Green, Charles D.
Partner: UNT Libraries Government Documents Department

Apparatus for Washing and Scrubbing Gas.

Description: Patent for a washer-scrubber that cleans gas from "tarry matter, ammonia, sulphureted hydrogen, carbonic acid and other impurities" (lines 14-16). The machine divides gas into streams, sprays it with washing liquor, spreads it over reticulated and perforated plates.
Date: March 7, 1893
Creator: Fitzgerald, John H.
Partner: UNT Libraries Government Documents Department

Axle.

Description: Patent for improvement in axles by using a “combination of a bar, two skeins and means for holding the skeins in place upon the bar,” (lines 17-18) includes illustration.
Date: March 31, 1891
Creator: Stewart, John A.
Partner: UNT Libraries Government Documents Department

Automatic Fire-Alarm System.

Description: Patent for an automatic fire alarm system with a simple arrangement of alarm devices (positioned throughout different rooms) with sound or visual indicators for fire awareness and closer thermal circuits (assisted with spring contact and circuit closer). The automatic fire alarm system will have a more immediate reaction by making an alert noise or visual and propping open the spring contact.
Date: March 16, 1915
Creator: Ammons, John Burck; Ammons, Evander & McGaffey, Otis
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

Attachment for Vehicle-Headlights.

Description: Patent for attachment for vehicle headlights. The invention has a deflecting hood for the head light that deflects the light downward, below the line of sight, particularly for oncoming vehicles
Date: March 26, 1918
Creator: Burns, Bessie A.
Partner: UNT Libraries Government Documents Department

Improvement in Wheels for Vehicles.

Description: Patent for new and useful improvement in wagon hubs that includes one-piece attachment and spokes that can be cut by metal strips by exposed to no injury, including illustrations.
Date: March 18, 1873
Creator: McNalley, Michael
Partner: UNT Libraries Government Documents Department

Trowel.

Description: Patent for "new and useful improvements in Trowels." (lines 8-9) including instructions and illustrations.
Date: March 2, 1920
Creator: Parker, Barton J.
Partner: UNT Libraries Government Documents Department

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

Lubricator.

Description: Patent for a new and improved lubricator. This design "relates to improvements in that class of lubricators wherein the oil reservoir or vessel is provided with a discharge-pipe passing through the bottom to the point of delivery, and rising within the reservoir to near its top, the steam rising in such pipe condensing and falling by gravity to the bottom of the reservoir, thus displacing the oil, and causing it to rise and flow down through the pipe to the parts to be lubricated" (lines 8-17).
Date: March 4, 1884
Creator: Bissett, Jean
Partner: UNT Libraries Government Documents Department

Water or Oil Screen.

Description: Patent for a water or oil well screen to keep mud and other debris out of the barrel of the well.
Date: March 24, 1908
Creator: Childress, Authey Eli
Partner: UNT Libraries Government Documents Department

Machine for Disintegrating Fibrous Plants

Description: Patent for a machine that filters out the pulp from fibrous plants to obtain their fiber. Illustrations included.
Date: March 3, 1908
Creator: Hartman, Emil
Partner: UNT Libraries Government Documents Department

Internal Combustion Engine.

Description: Patent for improvements to the class of explosive engine for a motor vehicle and internal gas combustion engine, including illustrations.
Date: March 27, 1917
Creator: Murray, Harry A.; Dorman, William T. & Pollard, Claude
Partner: UNT Libraries Government Documents Department

Line support

Description: Patent for an adjustable support for clothes lines.
Date: March 27, 1917
Creator: Lott, Truman R.
Partner: UNT Libraries Government Documents Department

Boat.

Description: Patent for boat with improvements towards easy movements by using a propeller and rudder. The boat is designed with the user to use their feet to manually move the boat. The boat is designed for hunting or fishing while keeping the hands free.
Date: March 8, 1921
Creator: Greer, John C.
Partner: UNT Libraries Government Documents Department

Wire Stretching Device for Fence Posts.

Description: Patent for a new and improved wire stretcher. This design consists in "[t]he combination of a fence-post, the coupled pulleys mounted thereon and adapted to be simultaneously rotated, independent fence-wires extending in opposite directions and attached to one of the pulleys at points thereon that are arranged close together, and binding-sleeves for preventing the rotation of the pulleys after the wires have been stretched" (lines 14-21).
Date: March 16, 1886
Creator: Priday, Henry
Partner: UNT Libraries Government Documents Department

Truck For Wood Preserving Retorts

Description: Patent for a truck for wood preserving retorts. This "invention relates to a truck specially adapted for carrying articles which are to be moved on the truck into retorts, especially those constructed in cylindrical form" (lines 9-12). The truck is designed to permit large amounts of wood to loaded. Illustration included.
Date: March 19, 1907
Creator: Rollins, Henry M. & Neff, Asa J.
Partner: UNT Libraries Government Documents Department

Improvement in Rotary Subsoil-Plows.

Description: Patent for an improvement upon subsoil plows, using a series of spades arranged upon the same pulleyed rotary shaft, combined with furrow-opening plows.
Date: March 28, 1871
Creator: Morris, Joseph R.
Partner: UNT Libraries Government Documents Department

Improvement in Vapor-Burners.

Description: Patent for "new and Improved Vapor-Burner." (lines 3-4)
Date: March 26, 1878
Creator: Sawyer, Frederick A.
Partner: UNT Libraries Government Documents Department

Tractor.

Description: Patent for improvements to the tractor with adjustable framework for the wheels (narrower or wider).
Date: March 23, 1920
Creator: Weaver, William S.
Partner: UNT Libraries Government Documents Department

Ventilating Apparatus

Description: Patent for a ventilation apparatus that prevents the accumulation of dust in the interior of passenger coaches on railway-trains, while also cooling the coach.
Date: March 14, 1901
Creator: Reynolds, William H. B.
Partner: UNT Libraries Government Documents Department

Improvement in Balanced Valves.

Description: Patent for an improvement in the design of balanced slide valves for steam and other engines, including illustrations.
Date: March 18, 1873
Creator: Fitzsimmons, Henry.
Partner: UNT Libraries Government Documents Department
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