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Process of Concentration

Description: Patent for the invention that relates to a process of separating a conductive substances from a nonconductive substance, and more particularly to the seperation by means of electrifying conducting particles and repelling said particles, while the non-conductive substances are not so repelled (lines 10-16).
Date: March 26, 1901
Creator: Sutton, Henry M. & Steele, Walter L.
Partner: UNT Libraries Government Documents Department

Paper Ruling Machine

Description: Patent for "new and useful Improvements in Ruling-Machine, to provide a simple and efficient machine with a series of pens that draw across sheets of paper carried by a suitable support" (lines 5-11).
Date: February 26, 1901
Creator: Wilmans, Robert
Partner: UNT Libraries Government Documents Department
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