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Stopper.
Patent for improvement in stoppers by “combining a stopper and funnel adapted to be used for pouring liquids from one vessel to another without wasting, provision being made for pouring the liquid into a large vessel or into a small vessel, and when the stopper is not in use it may be closed for the purpose of preventing leakage and evaporation.” (Lines 12-19) Illustration is included.
Date:
January 1, 1901
Creator:
Hyer, William D.
System:
The Portal to Texas History
Rotary Core-Drill.
Patent for a rotary drill for drilling into and removing solid core samples of hard formations encountered in deep oil wells. It is designed to remove the core sample intact so the composition of the formation can be analyzed.
Date:
May 1, 1917
Creator:
Smith, Thomas B.
System:
The Portal to Texas History