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Improvement in Horse-Powers. (open access)

Improvement in Horse-Powers.

Patent for new improvement in the construction of horse-powers for cotton-gins and other machinery, including illustration.
Date: February 17, 1874
Creator: Landes, Daniel
System: The Portal to Texas History
Improvement in Insect-Destroying Compounds. (open access)

Improvement in Insect-Destroying Compounds.

Patent for an insecticide that kills ants via fumigation. Ingredients include sulfur, charcoal, potassium cyanide, arsenic, and coal tar.
Date: September 22, 1874
Creator: Tottenham, John William
System: The Portal to Texas History