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Apparatus for Delivering and Hauling Seines

Description: Patent for an apparatus for delivering and hauling seines that can be used in deeper water and is safer than the ordinary method of using seines.
Date: December 12, 1911
Creator: Duffy, John J.
Partner: UNT Libraries Government Documents Department

Process of Mining Sulfur.

Description: Patent for innovations in the underground fusion or Frasch process of mining sulfur, "which comprises conducting an appropriate fusing medium [such as hot water] into the formation containing the sulfur deposit and thereby melting the sulfur" (lines 91-95). Central to the innovations is the use of a compressed gas to "eliminate or largely reduce heat losses in porous rock and exhausted sulfur regions at the higher levels of the mine where the presence of the hot water is of no benefit so far as… more
Date: December 27, 1921
Creator: Drachenberg, August Toby
Partner: UNT Libraries Government Documents Department

Tire-Core.

Description: Patent for a tire core with interlocking sections that can be removed easily from built tires to reuse, including illustrations.
Date: December 21, 1920
Creator: Gillette, Walter S.
Partner: UNT Libraries Government Documents Department

Drill-Collar.

Description: Patent for improved drill collar for "connecting a drill shank to the pipe" (lines 11-12).
Date: December 15, 1914
Creator: Means, Able C.
Partner: UNT Libraries Government Documents Department
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