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The Iron Age 1887-08-04: Vol 40 Iss 5

1887 Reed Business Information US

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“The Iron Age > INDEX TO READING MATTER A PAGE 30 Review of the Hardware, Iron Published every Thursday Morning by Davip WIiLLiAms, Nos. 66 and 68 Duane Street, New York. Mer XL. ke r O — A? Metal Entered at the Post Office, New York, and ‘Trades. NDEX VERT PAGE AD EMENT Vv as Second-Ciass Matter, SL.50 a Year, Including Postage. Single Coptes, Ten Cents. Lead-Encased Conductors.* BY DAVID BROOKS. In the first attempt in this country to work electric telegraphy the wires were covered with cotton, soaked in a preparation of shellac, drawn into lead tubes four together, the intervening space being left empty. This system was laid from Baltimore toward Washington, about 5 miles on the Baltimore and Obio Railroad. I got this information from Tatham & Bros., | who made most of the lead pipe purchased, although none of what they made was iaid. The experiment was a failure. About that time, or a little before, Professor Jacoby, of St. Petersburg, undertook to lay cotton-cov- ered copper conductors in lead pipe with the intervening space filled with rusin. There have been very many attempts of that kind | which proved to be failures, until the year THE MINING REGIONS 1856, when the discove…

Citation

The Iron Age 1887-08-04: Vol 40 Iss 5. Reed Business Information US. 1887.