CMS:Early Telephone History Display: Difference between revisions
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The '''Early Telephone History Display is the first display visitors see on the third floor of the [[CMS:Connections Museum|Connections Museum]]. It contains a working bidirectional telegraph as well as several replicas of early telephones. | [[File:Early Telephone History display.jpg|thumb|The Early Telephone History Display]] | ||
The '''Early Telephone History Display''' is the first display visitors see on the third floor of the [[CMS:Connections Museum|Connections Museum]]. It contains a working bidirectional telegraph as well as several replicas of early telephones. | |||
[[:Category:Connections Museum Exhibits]] | == Telegraph display == | ||
=== Western Electric No. 21A === | |||
[[File:Western_Electric_No._21A_with_mounted_tin_can.jpg|thumb|Western Electric No. 21A with mounted tin can]] | |||
The '''[[Western Electric No. 21A]]''' is a bidirectional single wire telegraph. It features [[Western Electric No. 3C|No. 3C]] sounders which amplify the signals on each side with hollow brass mounts. The tin cans mounted to the sounders were there when the telegraph was acquired by the museum. Tin cans would often be used to further amplify telegraph sounds in addition to the sounders. | |||
=== Les's Typewriter === | |||
This [[wikipedia:Royal_Typewriter_Company|Royal]] brand typewriter belonged to [[CMS:Les Anderson|Les Anderson]], a museum volunteer. | |||
=== No. 2 Omnigraph Automatic Transmitter === | |||
This is an [[No. 2 Omnigraph]] automatic telegraph transmitter from between 1915 and 1920 which can send Morse code messages. It was used to train new telegraph operators as well as to increase the speed of established operators. | |||
=== Western Electric No. 20C Sounder === | |||
Another example of a sounder rated at 100 Ohms. | |||
== Early phone replicas == | |||
=== Gallows transmitter === | |||
This replica of the [[Gallows transmitter]] is from a Bell commemoration. | |||
=== Liquid transmitter === | |||
This replica of Alexander Graham Bell's liquid transmitter is from ?? | |||
=== Williams "Coffin" telephone === | |||
=== Telephone with Blake Transmitter === | |||
[[Category:Connections Museum Exhibits]] | |||
Latest revision as of 17:45, 11 March 2025
The Early Telephone History Display is the first display visitors see on the third floor of the Connections Museum. It contains a working bidirectional telegraph as well as several replicas of early telephones.
Telegraph display
Western Electric No. 21A
The Western Electric No. 21A is a bidirectional single wire telegraph. It features No. 3C sounders which amplify the signals on each side with hollow brass mounts. The tin cans mounted to the sounders were there when the telegraph was acquired by the museum. Tin cans would often be used to further amplify telegraph sounds in addition to the sounders.
Les's Typewriter
This Royal brand typewriter belonged to Les Anderson, a museum volunteer.
No. 2 Omnigraph Automatic Transmitter
This is an No. 2 Omnigraph automatic telegraph transmitter from between 1915 and 1920 which can send Morse code messages. It was used to train new telegraph operators as well as to increase the speed of established operators.
Western Electric No. 20C Sounder
Another example of a sounder rated at 100 Ohms.
Early phone replicas
Gallows transmitter
This replica of the Gallows transmitter is from a Bell commemoration.
Liquid transmitter
This replica of Alexander Graham Bell's liquid transmitter is from ??