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Electric Conductor

Description: Patent for electric conductor with switch cord and plug especially designed for use with multiple electrical circuits, as with a telephone switchboard.
Date: March 20, 1906
Creator: Weir, Welby D.
Partner: UNT Libraries Government Documents Department

Smoker's Pipe.

Description: Patent for improvements in sanitation, or cleaning, of smoker's pipes. Pipe can be dissembled for cleaning and includes access to duct and stem with no loss of quality in airstream.
Date: April 20, 1915
Creator: Hopkins, George C.
Partner: UNT Libraries Government Documents Department

Revolving Signal.

Description: Patent for a new and improved revolving signal-light: "[t]he combination, with a car-axle and a shaft driven thereby, of the lateral supporting stems carrying signaling-lanterns glazed in alternating colors, a shifting-lever acting alternately upon studs or stops of the said shaft, said shaft having a sliding movement, and gearing alternately with said signal-carrying stems" (lines 82-89).
Date: August 20, 1889
Creator: Warren, John W. & Radford, Samuel H.
Partner: UNT Libraries Government Documents Department
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