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Air-Compressor.

Description: Patent for "new and useful improvements for air-compressors" (lines 5-6), with instructions and illustrations.
Date: July 20, 1886
Creator: Harrold, Mahlon
Partner: UNT Libraries Government Documents Department

Ant-Trap.

Description: Patent for a new ant trap design using a conical shape and reservoirs for holding kerosene to destroy ants, including illustrations.
Date: March 20, 1888
Creator: Kell, Mathew
Partner: UNT Libraries Government Documents Department

Apparatus for Making Soap.

Description: Patent for a new and improved soap-making machine. This design "consist[s] of grease and soda tanks, the latter tank having a diaphragm . . . a register-tank, pipes leading from said grease and soda tanks to said register-tank, a pivoted converter, a rotary shaft in said converter and blades, a shaft journaled in uprights attached to said converter and provided with a crank and a bevel wheel, the latter gearing with a bevel-wheel on said rotary shaft in the converter, and removable furnaces for said grease tank and converter" (lines 21-32).
Date: September 20, 1887
Creator: Grant, William A.
Partner: UNT Libraries Government Documents Department