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Educational Appliance.

Description: Patent for an educational appliance that is meant to be used for teaching math mechanics and physics. It easily demonstrates principles of mechanics and physics that involve quantities.
Date: September 26, 1893
Creator: Macfarlane, Alexander
Partner: UNT Libraries Government Documents Department

Clock-Winding Mechanism.

Description: Patent for "an improved mechanism for the periodical automatic winding of clocks by water power, and has for its object to provide an apparatus that will be adapted to utilize the power afforded by the gravity of water discharged at regular intervals from a tank, which is in an elevated position and is supplied with water by rain fall or other means" (lines 8-16).
Date: September 26, 1893
Creator: Everhart, Martin
Partner: UNT Libraries Government Documents Department
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