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Apparatus for Sulfur Mining

Description: Patent for "new and useful improvement" for sulfur mining by Mr. Robert Carmichael. This device has particular application for mining in subterranean environments, "by use of pumping a heated fluid down into contact with a sulfur strata" (lines 14-15).
Date: December 9, 1919
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bell-Holder

Description: Patent for a bell holder that attaches to the neck of an animal, prevents loss of the bell, and is easy to use and cheap.
Date: December 9, 1919
Creator: Pappas, Peter G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bevel-Square

Description: Patent for improvements in bevel squares used by carpenters, mechanics, and other similar work to represent the work of multiple bevels at once "to minimize and facilitate operations in fitting the parts of an objective structure together..." (Lines 19-21).
Date: December 9, 1919
Creator: Seay, Mathew E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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