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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

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

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

Improvement in Gas-Liquefying Pumps.

Description: Patent for "the construction and arrangement of a pump used in ice-machines for liquefying [sic] the gas" (lines 12-14) including illustrations.
Date: March 21, 1876
Creator: Boyle, James
Partner: UNT Libraries Government Documents Department
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