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Improvement in Force - Pumps.

Description: Patent for new and improved force pump with three cylinders.
Date: December 22, 1874
Creator: Chambers, J. C.
Partner: UNT Libraries Government Documents Department

Improvement in Animal-Traps.

Description: Patent for improvement in animal-traps, with description and illustrations.
Date: December 26, 1876
Creator: Anderson, Zachariah J.
Partner: UNT Libraries Government Documents Department

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 Churns.

Description: Patent for a butter churn.
Date: December 15, 1874
Creator: Sreeves, Charles B.
Partner: UNT Libraries Government Documents Department

Seed-planter.

Description: Patent for a machine that can plant any kind or size of seed or grain at any desired distance apart.
Date: December 3, 1878
Creator: Hoshall, David W.
Partner: UNT Libraries Government Documents Department
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