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" Thus far, methods for transmitting only single messages over a line have been discussed. Such systems are frequently called simplex to distinguish them from •multiplex systems. Multiplex telegraphy is the transmission of two or more messages over the... "
Answers to questions - Page 12
by International Correspondence Schools - 1901
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International Library of Technology: A Series of Textbooks for ..., Volume 24

Agriculture - 1901 - 572 pages
...opposite ends of the double transmitter with the resistances and the dynamos of opposite polarity. vSee Fig. 75 and Art. 222. (59) Multiplex telegraphy is...more messages over the same wire at the same time. (f>O) (a) As each circuit in a repeater is closed, a short delay occurs in the transmission of a message,...
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Elements of telegraph operating, telegraphy

International Correspondence Schools - Correspondence schools and courses - 1901 - 1106 pages
...discussed. Such systems are frequently called simplex to distinguish them from •multiplex systems. Multiplex telegraphy is the transmission of two or...more messages over the same wire at the same time. It is quite obvious that, if instruments can be arranged so that two simultaneous messages can be sent...
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Telegraphy, Volume 24

Telecommunication - 1901 - 524 pages
...been discussed. Such systems are frequently called simplex to distinguish them from multiplex systems. Multiplex telegraphy is the transmission of two or...more messages over the same wire at the same time. It is quite obvious that, if instruments can be arranged so that two simultaneous messages can be sent...
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I.C.S. Reference Library: A Series of Textbooks ..., Volume 47

Civil engineering - 1905 - 718 pages
...been discussed. Such systems are frequently called simplex to distinguish them from multiplex systems. Multiplex telegraphy is the transmission of two or...more messages over the same wire at the same time. It is quite • obvious that, if instruments can be arranged so that two simultaneous messages can...
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Herringshaw's American Statesman and Public Official Year-book

Statesmen - 1914 - 1034 pages
...West Orange, NJ, was born Feb. 11, 1847, in Alva, Ohio. He invented a system by which he could send two or more messages over the same wire at the same time. His principal inventions are the telephone, phonograph and electric light. has prepared bibliographies...
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Telephone and Telegraph Engineers' Handbook: A Convenient Reference Book for ...

International Correspondence Schools - Telegraph - 1908 - 456 pages
...rapidly increasing current and, therefore, to more rapidly build up its magnetism. MULTIPLEX TELEGRAPHY Multiplex telegraphy is the transmission of two or...more messages over the same wire at the same time. The transmission of two telegraphic messages simultaneously over the same wire is called duplex telegraphy....
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Herringshaw's National Library of American Biography: Contains Thirty-five ...

Thomas William Herringshaw - United States - 1909 - 680 pages
...how to telegraph. He then became a telegraph operator, and invented a system by which he could send two or more messages over the same wire at the same time. His principal inventions are the telephone, phonograph and electric light. Edmands, J. Wiley, congressman,...
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Herringshaw's American Blue-book of Biography: Prominent Americans of ...

United States - 1915 - 1258 pages
...West Grange, NJ, was born Feb. 11, 1847, in Alva, Ohio. He invented a system by which he could send two or more messages over the same wire at the same time. His principal inventions are the telephone, phonograph and electric light. Edmands, John, librarian...
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Samuel F.B. Morse: His Letters and Journals, Volume 2

Samuel Finley Breese Morse - Telegraph - 1914 - 612 pages
...statements of the utmost interest. The discovery of duplex telegraphy, or the possibility of sending two or more messages over the same wire at the same time has been credited by various authorities to different persons; by some to Moses G. Farmer in 1852,...
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American Blue-book of Biography: Prominent Americans of 1914

Thomas William Herringshaw - United States - 1914 - 1036 pages
...West Orange, NJ, was born Feb. 11, 1847, in Alva, Ohio. He invented a system by which he could send two or more messages over the same wire at the same time. His principal inventions are the telephone, phonograph and electric light. has prepared bibliographies...
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