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Ore Concentrator
Patent for a "machine for separating ores of precious metals, and particularly to that class of machines known as 'dry concentrators or separators,' used for separating fold ore by means of an air-blast over dry sand, gravel, quartz, etc." (lines 10-15). Illustrations and instructions are included.
Date:
August 17, 1897
Creator:
Waer, Luis M.
System:
The Portal to Texas History
Dirigible Headlight
Patent for rotating combination lamp and spindle.
Date:
February 6, 1917
Creator:
Wogenstahl, Leo J.
System:
The Portal to Texas History