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Locking Device for Car-Doors.

Description: Patent for a locking device for a sliding train car capable of locking automatically upon close, including illustrations.
Date: May 9, 1916
Creator: Tierney, Henry J.
Partner: UNT Libraries Government Documents Department

Method of Treating Ores.

Description: Patent for "new and useful Improvements in methods of Treating Ores, of which the following is a specification. The present invention relates to a method of treating ores carrying gold and silver values in any form amenable to cyanid treatment or flotation" (lines 6-12).
Date: May 8, 1917
Creator: Friberger, Harry Louis
Partner: UNT Libraries Government Documents Department
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