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Automatic Air-Brake Appliance

Description: Patent for an automatic air brake appliance for railroad cars that activates if the car derails.
Date: May 2, 1911
Creator: Baxter, Joseph Sewell
Partner: UNT Libraries Government Documents Department

Automatic Switch

Description: Patent for an automatic switch for railroad tracks.
Date: May 2, 1911
Creator: Pickle, Voyl C.
Partner: UNT Libraries Government Documents Department

Clipping and Pruning Shears.

Description: Patent for clipping and pruning shears that can have the blades taken off for sharpening.
Date: May 2, 1911
Creator: South, John P.
Partner: UNT Libraries Government Documents Department

Air-Pipe Coupling.

Description: Patent for an improved air-pipe coupling that is airtight and watertight and has a flexible union for railroad cars.
Date: May 2, 1893
Creator: Thomas, James Bryant
Partner: UNT Libraries Government Documents Department

Corn-Header.

Description: Patent for a device for the removal of the heads of corn. The device contains a blade and attaches to a person's hand.
Date: May 2, 1916
Creator: Hooper, Howard Henry
Partner: UNT Libraries Government Documents Department

Corn-Heading Knife.

Description: Patent for a corn cutting knife that straps to the hand and protects the fingers for a more efficient harvesting of corn and maize.
Date: May 2, 1916
Creator: Buchanan, Lemuel O.; Maddox, John S.; Russell, James P. & Speers, Albert
Partner: UNT Libraries Government Documents Department

Attachment for Carbureters.

Description: Patent for improvement in attachments for carbureters that uses a hydro-carbon engine to induce a vertical whirl.
Date: May 2, 1916
Creator: Loose, Robert D.
Partner: UNT Libraries Government Documents Department

Violin.

Description: Patent for an improved violin that is meant to "improve the acoustical properties of the instrument whereby it is enabled to give forth a deeper and softer tone, free from the "twang" common in instruments of this character, and second, to improve the mechanical construction of the instrument so that it will be less liable to become split" (lines 26-33).
Date: May 2, 1893
Creator: Clopton, John B.
Partner: UNT Libraries Government Documents Department

Internal Combustion Engine

Description: Patent for Internal Combustion Engine design
Date: May 2, 1916
Creator: Roquemore, Abb L. & Fallwell, Oscar M.
Partner: UNT Libraries Government Documents Department

Loading and Dumping Device.

Description: Patent for a loading and dumping device for use in road building projects to load gravel or other materials onto wagons.
Date: May 2, 1911
Creator: Byler, Tilden J.
Partner: UNT Libraries Government Documents Department

Liquid-Dispensing Apparatus.

Description: Patent for a new and useful liquid dispensing apparatus, including instructions and illustrations.
Date: May 2, 1899
Creator: Haye, August
Partner: UNT Libraries Government Documents Department

Lemon Juice Extractor

Description: Patent for a lemon juice extractor. Illustration included.
Date: May 2, 1905
Creator: Conroy, Eliza D. & Jobe, L. D.
Partner: UNT Libraries Government Documents Department

Lawn-Mower.

Description: Patent for a lawn mower that is easy to use and has long blades.
Date: May 2, 1911
Creator: Maldino, Mark
Partner: UNT Libraries Government Documents Department

Improvement in Tool-Holders for Grinding

Description: New and valuable Improvement in Tool-Holders, which are designed for holding tools in contact with the periphery of a grindstone.
Date: May 2, 1876
Creator: Fisher, Charles N.
Partner: UNT Libraries Government Documents Department

Throttle-Lever.

Description: Patent for a new and improved throttle lever, including instructions and illustrations.
Date: May 2, 1899
Creator: Canady, Lorin Winfield
Partner: UNT Libraries Government Documents Department

Measuring and Drawing Tool.

Description: Patent for an improved, simple, and durable measuring and drawing tool that is easily adjusted and used to find bevels, pitches, degrees, and lengths in framing roofs. It has other purposes as well. "The invention consists of a plate in the shape of an eighth of an octagon having four sides, and a straight edge pivoted on the side plate and indicating thereon" (lines 14-17).
Date: May 2, 1893
Creator: Allred, Lemuel O.
Partner: UNT Libraries Government Documents Department

Pneumatic Propulsion Means.

Description: Patent for a new and improved pneumatic propulsion means, including instructions and illustrations.
Date: May 2, 1899
Creator: Walker, James C.
Partner: UNT Libraries Government Documents Department

Sulky Plow.

Description: Patent for a new and improved sulky plow. This design "obviate[s] certain minor defects of the sulky-carriage for plows" (lines 15-17). More specifically, it "provide[s] simple and effective means for properly balancing the plow-carriage or frame and taking the weight off the horses' necks, provision being also made for using plows with or without guide-handles and of varying heights" (lines 39-44).
Date: May 2, 1882
Creator: Ward, James
Partner: UNT Libraries Government Documents Department

Valve

Description: Patent for a new and durable valve design, with illustrations.
Date: May 2, 1916
Creator: Villareal, Patricio
Partner: UNT Libraries Government Documents Department

Thill-Coupling.

Description: Patent for a new and useful thill coupling, including instructions and illustrations.
Date: May 2, 1899
Creator: Hauff, Isaac F.
Partner: UNT Libraries Government Documents Department

Hay-Press.

Description: Patent for an improved, inexpensive, and simple hay press that "alternately feed[s] the hay into the chamber, and press the same, the two mechanisms being operated from the same source; to provide for increase of power, and for regulating the tension or mouth of the press at the point of exit of the completed bale" (lines 12-18).
Date: May 2, 1893
Creator: Thompson, Joseph F.; Murphree, Richard L. & Harrison, William D.
Partner: UNT Libraries Government Documents Department

Hoisting Attachment for Wagon-Beds.

Description: Patent for a low cost, removable hoisting attachment for wagon beds, including illustrations and instructions.
Date: May 2, 1893
Creator: Baugh, Edward H. & Selvidge, Charles W.
Partner: UNT Libraries Government Documents Department

Hoisting Drum

Description: Patent for improvements to hoisting drums for use in drilling oil, gas, and water wells, with the object being "to employ a plurality of hoisting drums upon the same shaft so that the cable may be wound partly on one drum and partly on another" (lines 73-76) such that the danger of cable cutting is decreased and the speed of operation is increased, including illustrations.
Date: May 2, 1922
Creator: Suman, John R. & Gamble, Adrian R.
Partner: UNT Libraries Government Documents Department

Envelop Fastener

Description: Patent for an envelop fastener. Illustration included.
Date: May 2, 1905
Creator: Albea, Mary
Partner: UNT Libraries Government Documents Department
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