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Improvement in Compounds for Destroying Worms in the Cotton-Plant.

Description: Patent for a method of "destruction of the cotton-worm, and this object is accomplished by sprinkling the plants on which the worm feeds with a solution of arsenic in water." (Lines 8-12) Includes instructions.
Date: June 30, 1874
Creator: Mitchell, Thomas W.
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for improvements in plows used for agricultural purposes with an illustration. This improvement in design is specific to "provid[ing] a plow capable of being adjusted to cause engagement thereof with the earth at varying depths" (lines 10-12).
Date: June 24, 1919
Creator: Marshall, Andrew Jackson
Partner: UNT Libraries Government Documents Department

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design is "for automatically coupling cars of various heights, and also to provide devices for uncoupling the cars without the necessity of going between them. [The] invention consists in a spring-pressed hook attached to or formed upon a rock-shaft extending to the top of the car, and provided with a hand-wheel, by which it may be turned. It also consists in the combination, with the hook, of a rod connected thereto and extending t… more
Date: June 7, 1887
Creator: De May, Eugene A.
Partner: UNT Libraries Government Documents Department
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