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Air-Cooling Apparatus.

Description: Patent for an air cooling apparatus for air to be delivered into a room treated with moisture to reduce the temperature of the air without the use of ice.
Date: March 21, 1916
Creator: Hollenburger, Joseph
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for a new and improved plow. This design consists in "[t]he combination, with the plow-beam, the slotted and braced standard, and the adjustable land-bar, of the winged attachment formed with perforated lugs, the plow-point formed with upper and lower extensions and secured to said attachment" (lines 95-100).
Date: August 21, 1888
Creator: Wied, August & Lürssen, Henrich
Partner: UNT Libraries Government Documents Department

Improvement in Cultivators.

Description: Patent for "a new and Improved Cultivator" (lines 3-4) including instructions and illustrations.
Date: June 21, 1859
Creator: Veal, Franklin
Partner: UNT Libraries Government Documents Department
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