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Hydrant Valve.

Description: Patent for an improved valve for hydrants that, when closed, allows water to drain out of the riser and bib, preventing freezing. Includes illustrations.
Date: September 26, 1911
Creator: Ziller, William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Refrigerator.

Description: Patent for a refrigerator that cools dairy and other food products by evaporating water. The cooler is a chest with water in it and containers with absorbent material around the bottom of the containers that sits in the water. The outer chest is metal, and a container sits underneath to catch drips.
Date: September 18, 1894
Creator: Greene, George A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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