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Improvement in Lever-Powers.

Description: Patent for a lever-power which applies "the power and resistance to the lever, so that they will change positions with relation to the fulcrum as the power end of the lever descends" (para. 2). The relation of the lever with the fulcrum is flexible, and allows for increased leverage.
Date: September 23, 1879
Creator: Franklin, Mathew Calhoun
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Horseshoe-Nail Clincher.

Description: Patent for an improved simple and efficient clincher for horseshoe nails. It consists of a serrated jaw with a beveled extension, a handle, and two plates that act as springs.
Date: January 2, 1894
Creator: Seeliger, Oswald
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Churning Machine

Description: Patent for a churning machine that pumps liquids. It is designed to reduce materials used in this labor. This machine will also improve the quality of the labor and decrease the cost of this labor.
Date: December 6, 1905
Creator: Van Dusen, Henry L
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Churn

Description: Patent for a new churn with a simplified and improved construction, includes illustrations.
Date: October 1, 1901
Creator: New, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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