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Valve for Engines.
Patent for certain new and useful improvements in valves for steam engines, including instructions and illustrations.
Date:
November 8, 1898
Creator:
Allen, Walter J.
System:
The Portal to Texas History
Method of and Apparatus for Treating Mineral Pitch.
Patent for an "improved method of and apparatus for treating mineral pitch and similar material to readily separate the asphalt and asphalt-oils from sand, bituminous rock, and other impurities contained in the mined material and removing the sand and impurities" (lines 12-17). The method circulates the material in hot water to separate the asphalt and asphalt-oils from the sand and impurities. The asphalt and oil rise to the top of the water and the impurities sink.
Date:
November 5, 1895
Creator:
Sellers, Harvey Lee; Conyngton, Hugh Ronald & Conyngton, Thomas
System:
The Portal to Texas History