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Mechanical Movement

Description: Patent for "an object to provide a chain and sprocket movement with improved means for maintaining the chain in operatively taut condition and relation to the sprocket wheel" (lines 13-17), including illustrations.
Date: November 9, 1915
Creator: Stine, John
Partner: UNT Libraries Government Documents Department

Detector for Wireless Telegraphy

Description: Patent for an improved detector for wireless telegraph machine through the use of minerals such as copper, sulfur, and zinc.
Date: November 9, 1915
Creator: Lorenz, Charles O.
Partner: UNT Libraries Government Documents Department
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