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Improvement in Washing-Machines.

Description: Patent for the improvement of washing machines, using two washboards. It includes a description and illustrations.
Date: May 21, 1872
Creator: Harper, William F.
Partner: UNT Libraries Government Documents Department

Improvement in Seed-Planters

Description: Patent for an improvement in seed-planters, which allows for adjusting to plant less or more seeds as desired.
Date: May 21, 1872
Creator: Richards, Augustus
Partner: UNT Libraries Government Documents Department

Improvement in Stalk-Chopper

Description: Patent for an improvement in corn and cotton stalk-choppers, allowing for the stalks to be turned under by the plow and prevent their interference with the machine.
Date: May 21, 1872
Creator: Richards, Augustus
Partner: UNT Libraries Government Documents Department
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