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About: Automatic curb sender     Goto   Sponge   NotDistinct   Permalink

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The automatic curb sender was a kind of telegraph key, invented by William Thomson, 1st Baron Kelvin for sending messages on a submarine communications cable, as the well-known Wheatstone transmitter sends them on a land line. For some time, it was the only instrument delicate enough to receive the signals transmitted through a long cable. This self-acting cable key was brought out in 1876, and tried on the lines of the Eastern Telegraph Company.