{"id":2897,"date":"2018-09-12T00:58:46","date_gmt":"2018-09-12T00:58:46","guid":{"rendered":"http:\/\/www.lovettsvillehistoricalsociety.org\/?p=2897"},"modified":"2018-09-27T15:18:26","modified_gmt":"2018-09-27T15:18:26","slug":"what-the-heck-is-this-thing-10","status":"publish","type":"post","link":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/what-the-heck-is-this-thing-10\/","title":{"rendered":"What the Heck IS This Thing #10"},"content":{"rendered":"

Can you guess what this object is \u2014\u00a0and what it does? \u00a0<\/em><\/strong><\/span><\/h2>\n

\"IMG_1238\"<\/a><\/p>\n

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Hint:\u00a0 The answer is at the bottom of this webpage<\/em><\/strong>.<\/span><\/p>\n

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SCROLL DOWN TO SEE THE ANSWER \u2026
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ANSWER to the \u201cWhat the Heck IS This Thing #10?\u201d Game:<\/strong><\/em><\/span><\/h2>\n

This is vintage telegraph sounder.<\/span><\/h3>\n
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Many thanks to Bruce Patterson, the PHONE WIZARD of Lovettsville for loaning this telegraph sounder from his personal collection of antique technology.<\/strong><\/em><\/div>\n<\/div>\n
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A telegraph sounder<\/b> is an antique electromechanical<\/a> device used as a receiver on electrical telegraph<\/a> lines during the 19th century. It was invented by Alfred Vail<\/a>\u00a0after 1850 to replace the previous receiving device, the cumbersome Morse register[1]<\/a><\/sup> and was the first practical application of the electromagnet<\/a>. When a telegraph message comes in it produces an audible “clicking” sound representing the short and long keypresses \u2013 “dots” and “dashes” \u2013 which are used to represent text characters in Morse code<\/a>. A telegraph operator<\/a> would translate the sounds into characters representing the telegraph message.<\/div>\n
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Telegraph<\/a> networks, used from the 1850s to the 1920s to transmit text messages long distances, transmitted information by pulses of current of two different lengths, called “dots” and “dashes” which spelled out text messages in Morse code<\/a>. A telegraph operator at the sending end of the line would create the message by tapping on a switch called a telegraph key<\/a>, which rapidly connects and breaks the circuit to a battery<\/a>, sending pulses of current down the line.<\/p>\n

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The telegraph sounder was used at the receiving end of the line to make the Morse code message audible. Its simple mechanism was similar to a relay<\/a>. It consisted of an electromagnet<\/a> attached to the telegraph line, with an iron armature<\/a> near the magnet’s pole balanced on a pivot, held up by a counterweight. When current<\/a> flowed through the electromagnet<\/a>‘s winding, it created a magnetic field<\/a> which attracted the armature, pulling it down to the electromagnet, resulting in a “click” sound. When the current ended, the counterweight pulled the armature back up to its resting position, resulting in a “clack” sound. Thus, as the telegraph key at the sending end makes and breaks the contact, the sounder echoes the up and down state of the key.<\/p>\n

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It was important that a sounder make a sound both when the circuit was broken and when it was restored. This was necessary for the operator to clearly distinguish the long and short keypresses \u2013 the “dashes” and “dots” \u2013 that make up the characters in morse code<\/a>.<\/p>\n

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https:\/\/en.wikipedia.org\/wiki\/Telegraph_sounder<\/a><\/p>\n

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Support Our Mission<\/em><\/h3>\n

The Lovettsville Historical Society is a nonprofit organization that relies entirely on volunteer help. \u00a0Support our mission to preserve and protect the history of Lovettsville, The German Settlement, and our unique corner of Loudoun County, Virginia. \u00a0\u00a0\u00a0Purchase a membership or make a tax-deductible* donation today.<\/a><\/strong><\/em><\/p>\n

Visit us on the web at\u00a0www.LovettsvilleHistoricalSociety.org.<\/a><\/p>\n

Visit the Lovettsville Museum, open Saturdays 1:00-4:00 or by appointment, at 4 East Pennsylvania Avenue, next to Lovettsville Town Hall.\u00a0\u00a0GoogleMap It<\/a><\/strong><\/em><\/p>\n

Subscribe to our free monthly electronic\u00a0Lovettsville History Magazine<\/em><\/strong>: \u00a0http:\/\/lovettsvillehistoricalsociety.us8.list-manage2.com\/s\u2026<\/a><\/p>\n

Join us and support our mission to preserve local history. \u00a0https:\/\/squareup.com\/store\/lovettsville-museum\/<\/a><\/p>\n

* The Lovettsville Historical Society, Inc. is a tax-exempt 501(c)(3) organization under the Internal Revenue Code. \u00a0Contributions and membership dues are tax deductible under Internal Revenue Code Section 170.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Can you guess what this object is \u2014\u00a0and what it does? \u00a0               Hint:\u00a0 The answer is at the bottom of this webpage. SCROLL…<\/p>\n","protected":false},"author":1,"featured_media":1983,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-2897","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-what-the-heck-is-the-thing"],"_links":{"self":[{"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/posts\/2897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/comments?post=2897"}],"version-history":[{"count":6,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/posts\/2897\/revisions"}],"predecessor-version":[{"id":2927,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/posts\/2897\/revisions\/2927"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/media\/1983"}],"wp:attachment":[{"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/media?parent=2897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/categories?post=2897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lovettsvillehistoricalsociety.org\/index.php\/wp-json\/wp\/v2\/tags?post=2897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}