Beautiful certificate from the Improved Pulsion Telephone Supply Company issued in 1893. This historic document has an ornate border around it with an underprint vignette of an vintage wall telephone. This item has the signatures of the Company's President, John W. Hodgdon and Treasurer, L. Mellett and is over 118 years old.
Certificate Vignette
Old Pulsion Telephone Ad Shown for Illustrative Purposes News Article from 1889: The Pulsion Telephone was a mechanical telephone which really seems as if it might rival the ordinary tele phone, at any rate for moderate distances, has been recently exhibited on a 3 miles line, between Finchley-road and Hendon, on the Midland Railway, under the name of the " Pulsion Telephone." It is the invention of Mr. Lemuel Mellett, of Boston, U.S. The principle seems to be to have on the resound ing-plate a numberof small coiled springs held at one end only; these respond to various harmonic vibrations, and the vibration of the wire is taken up and reinforced, giving great distinctness of utterance. It seems not to matter much whether the wire is twisted or passes through loose earth. One peculiarity is that it can be tapped at any point by resting a hat upon the wire, a useful quality in case of accident, though evidently unfitting it for private messages.