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Apparatus for Sulfur Mining
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.
System:
The Portal to Texas History
Sample-Taking Device
Patent for a sample taking device "for use in preserving the log of the well in drilling operations in earth, rock or other similar formations." (lines 12-14). Specially adapted for use in drilling wells for oil and sulfur, specifically in the Gulf Coast region.
Date:
December 9, 1919
Creator:
Carmichael, Robert E. & Hamman, George
System:
The Portal to Texas History
Pipe-Wrench.
Patent for the improvement of pipe wrenches necessary for use in well drilling or other circumstances where a wrench of strong construction is needed. This patent provides for a pipe wrench that can be easily adjusted to fit pipes of differing sizes and is easily manipulated for use regardless of direction.
Date:
December 9, 1919
Creator:
Carmichael, Robert E.
System:
The Portal to Texas History