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Automatic Alarm for Stem-Boilers.
Patent for a new and useful automatic alarm for steam boilers, including instructions and illustrations.
Date:
July 18, 1899
Creator:
Prencel, Anthony M.
System:
The Portal to Texas History
Pyrometer.
Patent for a new and useful pyrometers "in which the motive power is a column of metallic balls of high expansive quality inclosed in a metallic tube of less expansive power" (line 9 - 12).
Date:
November 21, 1899
Creator:
Von Koehring, Henry
System:
The Portal to Texas History