Ore Concentrator (open access)

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