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Core-Drill.
Patent for a core drill for making bore holes in rocks to get out solid samples of the inside of rocks, which has an improved grabbing method for retrieving the piece of rock inside the hole.
Date:
August 3, 1909
Creator:
McLoughlin, Malacha J. & Wynn, John S.
System:
The Portal to Texas History
Water-Heater.
Patent for a water heater for use in creating steam for oil and gas boilers, which heats faster than previous models.
Date:
April 5, 1910
Creator:
Hardie, Jeffie Watkins
System:
The Portal to Texas History