Photo: Häll, Peter / Tekniska museet

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Photo: Okänd / Tekniska museet

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Photo: Okänd / Tekniska museet

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Optical telegraph, model

The demonstration model of the Edelcrantz optical telegraph with a system of 10 shutters and with regulation by folding keys and crank mechanism is provided with a plate marked: "A ...

The demonstration model of the Edelcrantz optical telegraph with a system of 10 shutters and with regulation by folding keys and crank mechanism is provided with a plate marked: "A.N. Edelcrantz. Invent 1794".

About the object

Description
Abraham Niclas Edelcrantz was inspired by the semaphore telegraph that Claude Chappe (1763-1805) had invented in 1792. Edelcrantz achieved a faster and more accurate telegraph that he presented to King Gustav IV on his birthday on November 1, 1794 by sending a message from Stockholm to Drottningholm. The telegraph consists of s...
Abraham Niclas Edelcrantz was inspired by the semaphore telegraph that Claude Chappe (1763-1805) had invented in 1792. Edelcrantz achieved a faster and more accurate telegraph that he presented to King Gustav IV on his birthday on November 1, 1794 by sending a message from Stockholm to Drottningholm.

The telegraph consists of slots that are grouped in columns of three. The shutters have a value per row: 1, 2 and 4 respectively. The numbers 111 - 777 can thus be created. Using a tenth shutter doubles the number of characters to 1024. The system also included a set of codebooks used to interpret the numbers being transmitted. There was usually about 10 kilometers between the stations and the signs were read with spotting scopes.
DesignationModell, av optisk telegraf
IdentifierTEKS0014646
Type Thing

Dimensions value
- Length735.0 mm
- Width730.0 mm
- Weight=19.5 kg
- Height2225.0 mm

ColourRödbrun

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History

- Modellen har ingått i Kongl. Modellkammaren. Se Edelcrantz, A.N., Afhandling om Telegrapher och försök til en ny Inträttning däraf, Sthlm 1796.
- Produktion: 1794
- KonstruktörEdelcrantz, Abraham Niclas (1754 - 1821)
- Ägande
- Tidigare samlare/sammanställareKongliga Modellkammaren
- Accession: July, 1937
- Givare till museetKungl. Tekniska Högskolan, Avdelningen för elektronik

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Relation

Object/Work – Components2 related objects
- ThingModell, av optisk telegraf (TEKS0014646_1)
- ThingModell, av optisk telegraf (TEKS0014646_2)

Classification

- Optisk telegraf (TM Klass - Elektroteknik - Telegrafi - Tidig, pionjär)TM K 6301

License information

License Attribution (CC BY)

Metadata

IdentifierTEKS0014646
Alternative name
- TeM49567 - Tidigare använt inom den egna institutionen
- TM13546 - Institutionsintern katalog/lista
Part of collectionTekniska museets saker
Owner of collectionTekniska museet
InstitutionTekniska museet
Date publishedMarch 16, 2016
Date updatedJune 29, 2024
DIMU-CODE021026304117
UUIDd9a9faca-ebee-463f-a578-fc6f05508ed2