Samuel Morse
In addition to the telegraph, Morse invented a marble-cutting machine that could carve three-dimensional sculptures in marble or stone. He could not patent it, however, because of an existing 1820 Thomas Blanchard design.
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.