Selector switch, 1903
- Made:
- 1903 in United Kingdom
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LicenseThis image is released under a CC BY-NC-SA 4.0
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Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseSelector switch, Clark Automatic Telephone Company, Providence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Selector switch, Clark Automatic Telephone Company, Providence
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.
Details
- Category:
- Telecommunications
- Object Number:
- 1933-33
- Materials:
- copper (alloy), steel (metal), textile and wood (unidentified)
- Measurements:
-
overall: 240 mm x 110 mm x 110 mm, 1.01 kg
- type:
- electric switch
- credit:
- Donated by The Governors of Guy's Hospital
