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Improvement in Vehicle-Wheels.

Description: Patent for an "invention to provide a vehicle-wheel that is capable of being expanded so as to fit the tire". Patent for an invention to facilitate removing and replacing wagon or buggy tires.
Date: July 10, 1877
Creator: Racer, Martin J.
Partner: UNT Libraries Government Documents Department

Improvement in Insect-Exterminators.

Description: Patent for an improved insect exterminator design with modifications especially suitable for cotton fields, includes illustrations.
Date: June 10, 1879
Creator: Walker, John Z.
Partner: UNT Libraries Government Documents Department

Cultivation of Soil.

Description: Patent for improvements in soil cultivation, relating "to conserving and preserving moisture in the soil for growing vegetation" (lines 8-10), including illustrations and instructions.
Date: June 10, 1919
Creator: Lyon, Leonidas N.
Partner: UNT Libraries Government Documents Department

Dredging Machine.

Description: Patent for a new and improved dredging machine. This design consists in "[t]he combination, with a boat or the like, provided with depending hangers at its bow and stern, of the shaft journaled in said hangers, and provided with a spiral screw extending throughout its length" (lines 88-92). It is "for removing sand-bars and similar obstructions in the beds of harbors or in streams by loosening the sand or the like, so that it will be suspended in the water and carried off by the natural or crea… more
Date: May 10, 1887
Creator: Crockett, John Richardson
Partner: UNT Libraries Government Documents Department

Book Holder

Description: Patent for a book holder to receive or hold a book or in position for writing
Date: July 10, 1900
Creator: Hackworth, Riggs P.
Partner: UNT Libraries Government Documents Department
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