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Motor

Description: Patent for a "new and improved propeller for boats which is simple in construction, prevents a loss of power, and is thus very economical." (lines 8-10). Includes instructions and illustrations.
Date: October 5, 1886
Creator: Lay, William
Partner: UNT Libraries Government Documents Department

Steam Plow

Description: Patent for Steam-Plow. "The object of my invention is to provide a new and improved steam-plow, which is simple in construction, has great tractive force, can-not slip, and plows very rapidly and perfectly." (lines 7-10)
Date: August 3, 1886
Creator: Lay, William
Partner: UNT Libraries Government Documents Department

Portable Derrick.

Description: Patent for improvements to derricks which make them portable and easily manipulated. Includes instructions and illustrations.
Date: July 15, 1891
Creator: Hurd, George Murray
Partner: UNT Libraries Government Documents Department