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Thill-Coupling. (open access)

Thill-Coupling.

Patent for a thill-coupling that has a clip-eye, pivot-bolt, and an open-slotted thill-iron that has flat and extended jaws with a hole. The jaws are lined up with the thill-iron, meant to secure a railroad spike into place. The invention also has a flat bar-spring attached to the thill-iron.
Date: July 30, 1895
Creator: Dibrell, Anthony
System: The Portal to Texas History
Process of Extracting Wax from the Candelilla Plant (open access)

Process of Extracting Wax from the Candelilla Plant

Patent for a method of extracting wax from a candelilla plant using gasoline and benzine or naphtha in order to extract a light yellow wax, rather than the dark green wax currently extracted.
Date: October 30, 1911
Creator: Sharp, Benjamin Young
System: The Portal to Texas History