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With antiques, there are several factors: age, condition, historical significance, and uniqueness. NOT MARKED VERY OLD. He was a telegraph operator during the Civil War and is credited with having discovered that the sounds made by a register as it impressed dot and dash marks on paper tape could be copied by ear. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-

His system was visual and used semaphore, a flag-based alphabet, and depended on a line of sight for communication. From 1844 almost until World War II, the telegraph was the principal means of quickly communicating important information across great distances.Patented in the U.S. in 1837 by Samuel F.B. The non-electric telegraph was invented by Claude Chappe in 1794. Back to the "Projects" Page Home. Although the telegraph has since been replaced by the even more convenient telephone, fax machine and Internet, its invention stands as a turning point in world history… Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images. old phone telephone telegraph key telegraph line alexander graham bell BBC Motion Gallery: {{searchText.groupByEventToggleImages()}} ... {searchText.groupByEventToggleEvents()}} 1,251 Telegraph Machine stock pictures and images. Get the best deals on Telegraph & Telegram Advertising when you shop the largest online selection at eBay.com.

An optical telegraph is a line of stations, typically towers, for the purpose of conveying textual information by means of visual signals. make offer - old vintage wood base radio morse code key telegraph communication Vintage J.H. 90 ** CIVIL WAR TELEGRAPH OPERATOR'S TOMBSTONE WITH KEY AND TELEGRAPH POLE:(27KB) This tombstone was erected in honor of James Francis Leonard of Frankfort, KY. Make Offer - TELEGRAM MACHINE IN WOOD BOX. It won a high grade in a science project. Many science-related websites and books dealing with experiments in electricity and magnetism, especially those written for children and teens, have articles on how to build a telegraph set. The optical telegraph was later replaced by the electric telegraph, which is the focus of this article. How to Build a Telegraph Sounder. TELEGRAM MACHINE IN WOOD BOX. Explore tibchris' photos on Flickr. tibchris has uploaded 6604 photos to Flickr. $125.00 +$13.95 shipping.

NOT MARKED VERY OLD.

No need to register, buy now! TELEGRAPH SETS BUILT BY OTHER PEOPLE: Here is another version of this set: It was made by 13 year-old Claire Berry in KwaZulu-Natal, South Africa.

Thomas Alva Edison (1847-1931) was an American inventor and businessman. An engine order telegraph or E.O.T., also referred to as a chadburn, is a communications device used on a ship (or submarine) for the pilot on the bridge to order engineers in the engine room to power the vessel at a certain desired speed. Here is another version of this set: This is a closeup view of the sounder: Here is a third version of this set: ***! Bunnell & Co. Telegraph Key Sounder, Metal Base New York Morse code $160.00 Find the perfect telegraph machine morse stock photo. Thomas Edison operating a telegraph machine.