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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

Steam, Air, or Water Engine.

Description: Patent for simplifying the construction of steam-engines allowing them efficiently use the power of steam" gas, vapor or air in varying positions, vertical, horizontal, or inclined.
Date: May 9, 1882
Creator: Adams, James A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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