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Washing Machine

Description: Patent for a washing machine, that employs a rubbing belt and coacting rubbing-board, which allows for "effective adjustment of the rubbing-board to secure a heavy or light rubbing action without injury to the clothes" (lines 21-23)
Date: November 18, 1902
Creator: Haydon, William Henry
Partner: UNT Libraries Government Documents Department

Electric Water Heater

Description: Patent for improvements to electric water heaters adapted for heating small bodies of water. The interior walls of the cylinders in the heating unit are perforated so that water can freely circulate through and between them.
Date: February 7, 1922
Creator: Stephens, Richard M.
Partner: UNT Libraries Government Documents Department
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