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Mechanical Movement
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
System:
The Portal to Texas History
Detector for Wireless Telegraphy
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.
System:
The Portal to Texas History