D.C track relay, 1898
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License this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
License
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
D.C track relay, 1898
This relay is an example of the type used as the operational component of the D.C. track circuit, to complete the indicating, locking and other controlling circuits employed in automatic signalling.
Early experiments with the D.C. track circuit took place in this country about 1860, but it was first used successfully as a closed circuit in the U.S.A. in 1872.
Details
- Category:
- Signalling & Telecommunications
- Object Number:
- 1948-258
- type:
- track relay
- credit:
- Westinghouse Brake and Signal Co.