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Electric motor.
Patent for improved electric motor used in motor vehicles "which may be associated directly with the driving-wheel of a motor-vehicle" (lines 40-41), bypassing the need for other power-transmitting mechanisms. Includes instructions and illustrations.
Date:
July 20, 1897
Creator:
Perret, Frank A.
System:
The Portal to Texas History
Utilizing Sulfur-Containing Petroleum.
Patent for a method of removing sulfur from Beaumont petroleum and converting it into sulfuric acid.
Date:
February 20, 1912
Creator:
Robinson, Clarence I.
System:
The Portal to Texas History