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Tube-Mill.

Description: Patent for improvements in tube-mills (employed for ore and other substances) which is meant to help support and drive rotating drums or cylinders of the mills allowing for more full appearances.
Date: October 1, 1918
Creator: Bergman, Julius G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process of Leaching Copper Ores

Description: Patent for "a method of recovering copper by the electrolysis of copper solutions of any suitable kind, obtained by the lixiviation of the ore" (lines 9-12). The improvement in this method is that almost all the sulfuric acid and other leaching agents are used up prior to the copper going to the electrolysis tanks which increases the amount of copper recovered and the reduction of accumulated biproducts.
Date: October 22, 1918
Creator: Hahn, Albert W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electromagnetic Ore-Separator.

Description: Patent for an electromagnetic ore separator, which reduces the risk of any valuable particles falling with the waste mineral material below the magnetic surface.
Date: February 16, 1909
Creator: Charlton, Thomas
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process and Apparatus for Separation of Ores by Flotation.

Description: Patent for a improved process and apparatus use commercially to separate ores using flotation. By "introducing a novel step in the flotation process which results in the complete breaking down of the froth and at the same time keeping the volume of water used within the smallest practical limits thus preventing the washing away of valuable concentrates by an unnecessarily large volume of water" (lines 54-60).
Date: April 18, 1916
Creator: Thompson, W. Albert & Cole, David
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Ore-Separator.

Description: Patent for an improved, efficient, simple, and durable ore separator that quickly separates precious metals from sand. The operator puts the unfiltered material in the top of the separator, the material goes down a slide, through a stirrer, and out the other end.
Date: August 15, 1893
Creator: Dilworth, Robert
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Frame for Jaw Crushers

Description: Patent for "new and useful Improvements in frames for Jaw-Crushers (lines 8-9) including illustrations.
Date: March 25, 1919
Creator: Easton, William B. & Cole, David
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Process For The Reduction Of Iron And Lead Ores.

Description: Patent for a process that reduces iron and lead ores. This is done through two distinct combustion processes, the first of which converts the fuel and oxygen into carbon dioxide and the second process which produces carbon monoxide, that can produce iron or steel of different grades.
Date: June 14, 1921
Creator: Anderson, Robert J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Classifier and Separator.

Description: Patent for classifiers and separators used in mining to separate solids and liquids in the tank. It allows for easy removal and replacement of parts as they wear.
Date: March 19, 1918
Creator: Allen, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Apparatus for Sizing Ores or for Other Uses

Description: Patent for an apparatus for sizing ores. This invention is to "accomplish and accurate or approximately accurate sizing or classification of ores or granular materials in a rapid and thorough manner and with as large a capacity as possible" (line 15-19) illustrations included.
Date: June 23, 1903
Creator: Swain, Seth Russell
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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