Thank you for visiting SNEWPapers!
Sign up free
Story
November 1, 1890
The Roanoke Times
Roanoke, Virginia
What is this article about?
Mr. J.J. Carty recounts Mr. Preece's experiments showing a Deptford dynamo's interference with London telephones via earth connection, and proposes using earth-signaling for besieged garrisons or ship-to-shore communication.
Clipping
OCR Quality
100%
Excellent
Full Text
"Some time ago," said Mr. J. J. Carty, in a paper read to the New York Electric Society, "Mr. Preece made some experiments to determine the effect of the great Deptford 10,000 volt alternating current dynamo upon neighboring telephones, and he came to the conclusion that when this dynamo was working, all of the telephones in London would be interfered with, owing to their connection with the earth. At that time I pointed out that, by means of a dynamo properly connected with the earth and a set of telephones, a besieged garrison might communicate with a relief party by signalling through the earth itself. Similar signals might be sent with the aid of a telephone from a ship to the shore, or from one ship to another."
What sub-type of article is it?
Curiosity
Historical Event
What themes does it cover?
Survival
Exploration
What keywords are associated?
Telephone Interference
Earth Signaling
Dynamo Experiments
Besieged Garrison
Ship Communication
What entities or persons were involved?
Mr. J. J. Carty
Mr. Preece
Where did it happen?
London, Deptford
Story Details
Key Persons
Mr. J. J. Carty
Mr. Preece
Location
London, Deptford
Event Date
Some Time Ago
Story Details
Mr. Preece's experiments revealed that a Deptford dynamo interferes with all London telephones via earth connection; Mr. Carty proposes using dynamos and telephones to signal through earth for besieged garrisons or ship communications.