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in creator/contributor: "Stone, Jesse R."  
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Sulphur-Mining Apparatus.

Description: Patent for a thermal solvent based sulfur mining apparatus that is placed in a sulfur mining well. Utilizing thermodynamics, the apparatus has a new way to introduce air or steam into the various parts of the apparatus. It is designed with "simplicity and durability of construction" (lines 49-50).
Date: December 17, 1918
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Reamer.

Description: Patent for an enlarged reamer for maintaining the gage of the hole comprising a head threaded at one end for attachment to the drill and disk-shaped reaming cutters housed in slots in the sides.
Date: April 23, 1918
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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