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Insulator.

Description: Patent for a simple, inexpensive, and durable insulator meant for protecting wires for telephones and telegraphs. The insulator has two sections with recesses and locking apertures.
Date: June 18, 1895
Creator: Patterson, James M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone System.

Description: Patent for "a novel arrangement of circuits in connection with a pair of telephone-receivers at each subscriber's station, whereby the subscriber can cut out the station, so that the conversation is being carried on between two subscribers cannot be heard by the other subscribers on the same line" (lines 9-17).
Date: July 4, 1899
Creator: Bennett, William W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone.

Description: Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the telephone to better receive and transmit calls and "will receive its magnetism from the magnets of the magneto call" (lines 21-22).
Date: November 13, 1894
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone.

Description: Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving on [the inventor's] Patent No. 529,203" (lines 14-17).
Date: April 2, 1895
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone-Transmitter.

Description: Patent for a telephone-transmitter "with a diaphragm and carbon button carried thereby, of a spring-supported flaring conical carbon-cell provided with a flange covered with soft material and resting on the carbon button carried by the diaphragm, the carbon-cell being filled with granulated carbon resting in contact with the carbon button" (lines 13-19). This is meant to optimize the volume of sound being transmitted.
Date: October 20, 1896
Creator: Alexander, Horace C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Telephone-Exchange System.

Description: Patent for "a simple system and arrangement which is especially adapted for a telephone exchange, which enables the instruments to be connected by a single wire, which dispenses with the use of an operator at the central station, which has automatic means for registering the messages sent by each subscriber, and which is provided with an automatic switching device by means of which one subscriber may connect with any other" (lines 10-19).
Date: December 5, 1893
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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