Collections: Electricity Sparks Invention (1800-1900)
Edison's Electric Pen
The first electric copy machine, and probably the first
practical application of the electric motor.
Edison invented the electric pen as a means to produce copies of his correspondence and notes. A small electric motor operates a tiny needle in a rapid up/down motion, producing a series of small holes as the operator writes on specially treated paper. Later, a roller is used to press ink through the holes, producing duplicates of the original document. American, c. 1876