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Improvement in Air-Pressure Fluid-Vents.

Description: Patent for "new and useful improvements in air-pressure automatic fluid vents for the use in the discharge of all liquids" (lines 3-6), including instructions and illustrations.
Date: December 25, 1877
Creator: Park, Hardy B.
Partner: UNT Libraries Government Documents Department

Improvement in Automatic Fan

Description: Patent for improvement in automatic fans, specifically of a fan attached to a pendulum of a clock mechanism.
Date: April 25, 1876
Creator: Gollner, Ervin G. & Fretz, Emil
Partner: UNT Libraries Government Documents Department

Improvement in Rattoon-Cutting Machines.

Description: Patent for a rattoon-cutting machine which is created to "rapidly pull up and cut into short lengths the stubbles and roots of sugar cane (styled "rattoon") which are left upon the ground after the crop has been gathered" (lines 5-9), includes illustrations.
Date: March 25, 1875
Creator: Angers, John
Partner: UNT Libraries Government Documents Department
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