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[Certificate of Appointment of Agents]

Description: Notarized document certifying that the San Simon Cattle and Canal Company appointed J. J. Wheeler as its agent int he state of Arizona and J. D. Jordon as its agent in New Mexico. The document is signed by president of the company, J. H. Parramore.
Date: October 28, 1912
Creator: Texas
Partner: Hardin-Simmons University Library

Low-Water Alarm For Boilers

Description: Patent for "improvements in low water alarms for steam boilers and more particularly to those which are operated by the heat from the steam in the boiler, after the water therein has fallen below a predetermined danger point" (lines 15-20).
Date: January 5, 1915
Creator: Anderson, Williamson D. & Shearer, Edward J.
Partner: UNT Libraries Government Documents Department

Triple Valve

Description: Patent for a triple valve for air brakes on trains that gives the engineer more control over the brakes.
Date: August 13, 1912
Creator: Anderson, Williamson D. & Shearer, Edward J.
Partner: UNT Libraries Government Documents Department
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