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Cotton-Chopper. (open access)

Cotton-Chopper.

Patent for a cotton chopper, which attaches to a cultivator that throws the dirt out of the way to allow the plants to be chopped more easily.
Date: March 15, 1910
Creator: Arthur, George P.
System: The Portal to Texas History
Spark-Plug (open access)

Spark-Plug

Patent for a spark plug used in explosive engines. Illustrations included.
Date: July 26, 1910
Creator: Estes, Robert E. & Inman, John P.
System: The Portal to Texas History