Cooke and Wheatstone telegraph
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. The receiver consisted of a number of needles which could be moved by electromagnetic coils to point to letters on a board. This feature was liked by early users who were unwilling to learn codes, and employers who did not want to invest in staff training.
Edward Alfred Cowper
In 1879, Cowper invented the writing-telegraph; a device which allowed hand-written messages to be transmitted by telegraph. The exact position of the pencil of the operator at the sending-station was communicated to the writing-pen at the receiving-station through two wires, one giving the vertical and the other the horizontal position of the pencil.