Gate. (open access)

Gate.

Patent for a sliding gate that closes automatically when the opening and closing mechanism is released.
Date: February 14, 1911
Creator: Otto, Paul
System: The Portal to Texas History
Evaporator Cooler. (open access)

Evaporator Cooler.

Patent for an evaporator cooler.
Date: August 8, 1911
Creator: Tyson, William David & Tyson, Thomas Oscar
System: The Portal to Texas History