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Telephone-Transmitter

Description: Patent for improvements to telephone transmitters by transmitting the sound waves into electrical currents.
Date: January 16, 1883
Creator: Crawford, Witsius A.
Partner: UNT Libraries Government Documents Department

Screw-cutting Die.

Description: Patent for a screw-cutting die, including illustrations. The invention includes "a die-plate of special construction, adapted to cut either right or left hand threads" (lines 12-13).
Date: February 6, 1883
Creator: Müller, Joseph
Partner: UNT Libraries Government Documents Department

Well-Drilling Apparatus

Description: Patent for a well-drilling apparatus granted to Eli Catlin which is simpler and more convenient to use as well as being less expensive.
Date: November 27, 1883
Creator: Catlin, Eli
Partner: UNT Libraries Government Documents Department

Railway Steam Car Brake

Description: Patent for improvement in railway car brake by adding a steam actuating device attached to the locomotive.
Date: May 22, 1883
Creator: Walker, Fred B. & Lauder, James
Partner: UNT Libraries Government Documents Department