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Automatic Heat-Regulator for Incubators.
Patent for a device that allows for automatic temperature regulation in incubators. It operates by extinguishing and lighting the incubator's heating lamp wick to maintain a predetermined temperature.
Date:
March 29, 1921
Creator:
Wiedner, Charles
System:
The Portal to Texas History
Lineman's Portable Telegraph and Telephone Pole Seat.
Patent for a seat for linemen when stringing telegraph or telephone poles, which has clamps that go around the pole.
Date:
March 24, 1908
Creator:
Troell, Charles T.
System:
The Portal to Texas History
Hat and Coat Hanger
Patent for a wall mounted structure on which a hat or coat can be stored.
Date:
March 17, 1903
Creator:
Krezdorn, Herman A.
System:
The Portal to Texas History