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Photographic-Printing Machine

Description: Patent for a photo printing machine that can be used in dark rooms. Illustrations included.
Date: January 2, 1912
Creator: Higginbotham, Toliver S. & Higginbotham, Ezekiel H.
Partner: UNT Libraries Government Documents Department

Double-Action Ratchet

Description: Patent for a double action ratchet for use with drills that allows them to be turned either direction.
Date: January 21, 1913
Creator: Skinner, James W.
Partner: UNT Libraries Government Documents Department
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