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Some of the First Telegraph Keys

Some of the First Telegraph Keys.

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Some of the First Telegraph Keys

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  1. Some of the First Telegraph Keys The telegraph key Samuel Morse used on his first line in 1844 was very simple, a strip of spring steel that could be pressed against a metal contact. Alfred Vail, Morse's partner, designed this key, in which the gap was more easily adjustable. It was used on the expanding telegraph system, perhaps as early as the fall of 1844 and certainly by 1845. Courtesy of the National Museum of American History

  2. The Vail Register On Friday, May 24, 1844 at 8:45AM, the beginning of the telecommunications era in the United States began with the successful receipt of "What Hath God Wrought". That message was received on a telegraph register designed by Alfred Vail.

  3. The first long distance message On May 24, 1844, Samuel Morse sends the telegraph message "What hath God wrought?" from the Supreme Court chamber in the Capitol in Washington, D.C., to the B & O Railroad Depot in Baltimore, Maryland. (About 40 Miles)

  4. The first long distance message Notice the r (- - -) and the o (- -) are in American Morse Code, the original code used by the railroad and Western Union.

  5. Old Telegraph Schematic Key Register

  6. Phelps / Western Union weight-driven register and key late 1860's.

  7. A common key and sounder used by Western Union duringthe mid to late 1870s. Resonator Charles Lewis, the Western Electric shop foreman, received a U.S. patent for his "Lewis Key" on May 23, 1876

  8. Old Telegraph Schematics Key Sounder + - - +

  9. Telegraph Relay + - + - - - + +

  10. Telegraph Relays

  11. A key and telegraph sounder marked Bunnell Tel.& Elec. Co. manufactured between 1900-1904.

  12. The Bunnell Triumph Key I claim as my Invention: A telegraphic key lever constructed...from a single piece of wrought metal in the form of a cross, of a breadth greater than its depth or vertical thickness, and provided with trunnions formed upon the extremities of the traverse arms of the cross. (J.H. Bunnell 1881)

  13. The Bunnell Double Speed Keys The first side swiper Above: A Bunnell Double Speed Wireless Key “Style G” Below: The "Style W" landline key.
From the AWA Electronic History Museum Collection.

  14. An early production Horace Martin Vibroplex invented in 1903

  15. American (Railroad) Morse Code

  16. International Morse Code

  17. International Morse Code

  18. References WEB SITES http://www.telegraph-office.com/ http://www.morsex.com/ Vender that sells keys http://w1tp.com/ W1TP TELEGRAPH & SCIENTIFIC INSTRUMENT MUSEUMS http://www.telegraph-history.org/ http://www.antiquewireless.org/ AWA Antique Wireless Association CW Clubs Fists http://www.fists.org/ SKCC http://www.skccgroup.com/ NAQCC http://home.windstream.net/yoel/ N. American QRP CW Club

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