Pan-tel′e-graph.
An instrument invented by the Abbe Casseli, for transmitting autographic messages and portraits. The essential features of the invention are a line connecting a pair of pendulums which have isochronous vibrations. The pendulum at one end of the line carries an iron point over the portrait or message executed or written in insulating ink on a metallic paper, and the other pendulum at the other end of the line carries an iron pencil over a paper [1603] prepared with a solution of the yellow cyanide of potassium. The electric circuit is completed where the stylus at the transmitting end crosses the insulating ink, and at a corresponding place on the paper at the delivery end a blue mark is made by the other stylus on the prepared paper. See autographic telegraph. Bonelli's telegraph is of somewhat similar character. See Deschanel's “Natural philosophy,” Part III. pp. 730 – 733. |
| Pantile. |
