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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
Oil-Converting Apparatus.
Patent for an apparatus that can be built at moderate cost, which will enable a high rate of commercially efficient work to reduce "the specific gravity of various grades of hyrdo-carbon oils, especially those of a semi-refined character" (lines 22 - 24).
Date:
October 28, 1919
Creator:
Adams, Joseph H.
System:
The Portal to Texas History
Wick Material (Illinois Patent).
Patent for wick material, "composed of raw fibrous matter in layers or slivers in adhesive substance" (lines 16-17).
Date:
July 1, 1890
Creator:
Chapin, Myron H.
System:
The Portal to Texas History