The receiver consisted of a number of needles which could be moved by electromagnetic coils to point to letters on a board.
The Cooke and Wheatstone telegraph was an early electrical telegraph system dating from the 1830s invented by English inventor William Fothergill Cooke and English scientist Charles Wheatstone.It was the first telegraph system to be put into commercial service.However, the cables soon began to fail as a result of deteriorating insulation and were replaced with uninsulated wires on poles.From this point the use of the electric telegraph started to grow on the new railways being built from London.The telegraph arose from a collaboration between William Fothergill Cooke and Charles Wheatstone, best known to schoolchildren from the eponymous Wheatstone bridge.
This was not a happy collaboration due to the differing objectives of the two men.
Once it was known that Tawell had boarded a train to London, the telegraph was used to signal ahead to the terminus at Paddington and have him arrested there.
The novelty of this use of the telegraph in crime-fighting generated a great deal of publicity and led to increased acceptance and use of the telegraph by the public.
Cooke was an inventor and entrepreneur who wished to patent and commercially exploit his inventions.
Wheatstone, on the other hand, was an academic with no interest in commercial ventures.
All that was required were a few simple signals such as an indication to the engine house to start hauling.