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Combination Key and Automatic Stop Cock (open access)

Combination Key and Automatic Stop Cock

Patent for "new and improved Combination Key and Automatic Stop-Cock" (lines 6-7) for the purpose of providing "an automatic arrangement for cutting off the water-supply in hydrants and like appliances when the weather becomes so cold as to endanger the freezing of the water" (lines 11-14).
Date: May 7, 1900
Creator: Randall, Charles Thomas & Holden, Edward Gwynn
System: The Portal to Texas History