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Windmill.

Description: Patent for an improved design for windmills that are in regular use. The design implements two sets of hinged vanes and uses weights to control the amount power that the windmill can generate. Included are instructions and illustrations.
Date: May 18, 1880
Creator: Rudolph, Calvin Foster
Partner: UNT Libraries Government Documents Department

Adjustable Stool.

Description: Patent for an adjustable and foldable stool for but not limited to field workers, including instructions and illustrations.
Date: April 6, 1880
Creator: Smith, William Alexander & Smith, Robert Toumbleson
Partner: UNT Libraries Government Documents Department

Spark-Extinguisher.

Description: Patent for a spark extinguisher "to prevent the burning of buildings and other combustible matter by steam engines" (lines 15-17).
Date: March 9, 1880
Creator: Blewett, George L.
Partner: UNT Libraries Government Documents Department

Harvester-Reel.

Description: Patent for the placement of a "covering of canvas, cloth, or other suitable material" (lines 16-17) around a harvester-reel for various improvements, including instructions and illustrations.
Date: March 23, 1880
Creator: Moore, Joseph Martial
Partner: UNT Libraries Government Documents Department

Improvement in Gang-Plows.

Description: Patent for an improved gang-plow with an adjustable crank-axle, mechanism to raise and lock the plows, and a brace for increasing rigidity.
Date: January 27, 1874
Creator: Cummins, Allison G. & Cummins, John R.
Partner: UNT Libraries Government Documents Department

Improvement in Nail-Extractors.

Description: Patent for an improved instrument for extracting nails which "will increase its effectiveness in equal ratio with the resistance offered by the object under operation" (lines 13-16) including instruction and illustrations.
Date: May 14, 1872
Creator: Franklin, Edward A.
Partner: UNT Libraries Government Documents Department

Barrel

Description: Patent for ventilated barrels for shipment of fruits, vegetables, meat, and other articles in order to remain fresh
Date: February 28, 1882
Creator: McCormick, Willis B.
Partner: UNT Libraries Government Documents Department
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