Xerox Reference Libraries

The telautograph transmists electrical impulses recorded by potentiometers at the sending station to servomechanismas attached to a pen at the receiving station. This machine is the precursor to the modern fax machine. It is the first device to transmit drawings to a stationary sheet of paper. Elisha Gray invented and patented the telautograph in 1888. It was publicly exhibited in 1893. The...