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Magneto-Telephonic Apparatus

Description: Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic system based on an magnetic field of high intensity.
Date: May 4, 1886
Creator: Brown, Fred. H.
Partner: UNT Libraries Government Documents Department

Mechanical Dentistry.

Description: Patent for new and improved mechanical dentistry. This design consists in "[a] dental plate provided with a series of holes or perforations and a continuous groove upon the upper surface of the plate communicating with the holes or perforations therein" (lines 62-65).
Date: May 18, 1886
Creator: Mayfield, William Dudley
Partner: UNT Libraries Government Documents Department

Safety Valve Attachment for Lamps.

Description: Patent for a new and improved safety attachment for oil lamps. This design is "to permit of the escape of any gas which may be formed in the upper part of the oil-reservoir by the evaporation of its contents; and the object thereof is to provide a simple form of valve stamped from a single piece of sheet metal, with a shank adapted to be inserted through a slot in the lamp-collar and the valve afterward bent down over the valve-opening, thus presenting a valve that will be sensitive to the pres… more
Date: May 11, 1886
Creator: Ingle, Ezra William
Partner: UNT Libraries Government Documents Department
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