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Improvement in Plows.

Description: Patent for "a plow which will effect a clean severance of the sod on the land side when operating in heavy, tenacious soil, and which will prevent the accumulation of rubbish against the edge of the mold-board or standard." (Lines 6-11) Includes instructions and illustrations.
Date: July 17, 1877
Creator: Wood, John W.
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Partner: UNT Libraries Government Documents Department

Tractor Attachment

Description: Patent for a tractor attachment. The purpose of this attachment is to lift up the back wheels of the driving vehicle and improving the power of the vehicle.
Date: December 17, 1918
Creator: Thomas, Samuel Shelby
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rail-Joint

Description: Patent for an improved rail joint that doesn't need bolts.
Date: August 17, 1920
Creator: Ryan, George R. & Ryan, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Box-Fastener

Description: Patent for a box fastener that works to fasten the lid automatically when the lid is placed on the box.
Date: January 17, 1893
Creator: Fisher, Charles N.
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Partner: UNT Libraries Government Documents Department

Tie Bar

Description: Patent for a tie bar. Illustration included.
Date: January 17, 1905
Creator: Mareburger, Robert Julius
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Partner: UNT Libraries Government Documents Department

Pipe Coupling.

Description: Patent for pipe coupling in which the ends of pipes have interlocking attachments which can be both dissembled and reinforced for protection against accidental disengagement.
Date: August 17, 1920
Creator: McCullar, Willie A. & Ayraud, Jules J.
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Partner: UNT Libraries Government Documents Department

Centrifugal Pump

Description: Patent for centrifugal pump design meant to improve upon past models in which pieces of the pump wear out over time.
Date: December 17, 1918
Creator: Duda, Oswald
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Improvement in Beer-Refrigerators.

Description: Patent for "an improved refrigerator for cooling lager-beer in the keg, and keep it cool for a long time with a small quantity of ice" (lines 15-18) including illustrations.
Date: August 17, 1875
Creator: Bohart, John N.
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Partner: UNT Libraries Government Documents Department

Improvement in Presses.

Description: Patent for pressing cotton, hay, and tobacco with moveable notches for more control in producing bales and using less power than previous presses, including illustration.
Date: January 17, 1860
Creator: McCray, Thomas H.
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Partner: UNT Libraries Government Documents Department

Yoke for Connecting Animals.

Description: Patent for a new improvements in animal yoking. Patent for "a new and improved yoking or coupling for connecting two animals together when grazing which allows automatic disconnection in case either of the animals gets a foreleg over the coupling" (lines 8-12) including instructions and illustrations. Patent for a new animal yoking design, including illustrations.
Date: April 17, 1888
Creator: Carmichael, William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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