UNT Libraries Government Documents Department - 2 Matching Results

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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.
Item Type: Refine your search to only Patent

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.
Item Type: Refine your search to only Patent
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