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Automatic Railway-Switch Operating Mechanism

Description: Patent for an automatic railway switch operating mechanism with improved levers and controls.
Date: August 8, 1911
Creator: Hoffmann, Laniel F.
Partner: UNT Libraries Government Documents Department

Improvement in Seed-Planters.

Description: Patent for a seed-planter using two vibratory vertical feed-wheels, similar in size to distribute different seeds at the same time, one is designed specifically for cotton seeds, illustration is included.
Date: August 16, 1859
Creator: Murphy, Willis G.
Partner: UNT Libraries Government Documents Department
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