Magnetic key, 1850-1870
- maker:
- Siemens & Halske AG
This 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
License
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Magneto induction key for an electric telegraph, made by Siemens and Halske, Germany, 1850-1870.
This magneto induction key was used in an electric telegraph, and was made by Siemens and Halske around 1860. The key did not require a battery as it incorporated a magneto generator actuated by pressure of the Morse key which provided the signalling current.
Details
- Category:
- Telecommunications
- Object Number:
- 1923-513
- Materials:
- brass (copper, zinc alloy), wood (unidentified), metal (unknown) and iron
- Measurements:
-
overall: 150 mm x 175 mm x 360 mm, 12kg
- type:
- telegraph
- credit:
- Donated by Siemens Brothers and Company Limited
Related Objects
Cryptograph (coding and decoding machine) by Sir Charles Wheatstone, 1843-1875
Lead weight marked 'Reid' from the first cross-Channel telegraph cable, 1850.
Double-sided dummy single-needle telegraph used for training operators, 1870-1930
Sir W. F. Cooke's original electric alarum, 1835-1840
