selector switch, 1903
- Made:
- 1903 in United Kingdom
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence, Rhode Island, USA, 1903. From automatic
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, made by the Clark Automatic Telephone Company, United States, 1903. From automatic interdepartmental telephone switchboard installed at Guy's Hospital, February, 1903.
This is a selector switch comprising part of the internal telephone system used at Guy's Hospital between 1903 and 1932. It was a simple switch, which although not suitable for public exchanges, was useful for exchanges within a single building. Rotating the dial on a telephone to the number needed wound a spring inside the telephone, which drove a toothed wheel. Electrical impulses were sent to an electromagnet in the selector switch for each tooth that was passed, which then connected the telephone to the number called.
On display
Science Museum: Information Age Gallery: Exchange
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Details
- Category:
- Telecommunications
- Object Number:
- 1933-33
- Materials:
- copper (alloy), steel (metal), textile and wood (unidentified)
- type:
- electric switch
- taxonomy:
-
- component - object
- credit:
- Donated by The Governors of Guy's Hospital
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