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Improvement in Cotton-Gins.

Description: Patent for the improvement of the cotton-gin by the arrangement of two cylindrical brushes and rollers to reduce damaging the staple of the cotton, illustrations included.
Date: April 19, 1859
Creator: Gottheil, Edward
Partner: UNT Libraries Government Documents Department

Excavating and Grading Machine.

Description: Patent for a cultivating machine that pulverizes colds of soil using a revolving cylinder of blades, including illustration.
Date: July 19, 1859
Creator: Morrel, Z. N.
Partner: UNT Libraries Government Documents Department
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