The Trans-atlantic Submarine Telegraph; A Brief Narrative Of The Principal Incidents In The History…

Paperback | January 14, 2012

byGeorge Saward

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This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1878. Not illustrated. Excerpt: ... specification at a high standard to be fixed by the electrical advisers of the Company, but at not less than 85 per cent. "' 2. That the electrical perfection of the core be determined by the unit system of measurement, and that the standard of the cable should certainly not be below that of the best cable hitherto made. "' 3. That the core of the cable be tested under hydraulic pressure, and at the highest pressure attainable in Reid's tanks now at the Gutta Percha Works. "'4. That after submission to this pressure the core be carefully examined, and before it be transferred to Messrs. Glass, Elliot, and Co. it be required to pass the full electrical test under water. "' 5. That all the tests of the core be made in water of a temperature of 70 Fahrenheit, and after twenty-four hours' submersion therein. "' 6. That the Company, as well as Messrs. Glass and Co., employ proper persons at the Gutta Percha Works to check the electrical tests, and it is desirable that they should arrive at these results by a different process to that employed by the Gutta Percha Company. "' 7. That the completed cable be continuously tested under water at such temperature as the electrical advisers of the Company from time to time decide on, and that the Company check the tests. "' 8. That the joints be tested separately, and that no joint be passed which shows a leakage twice as great as that of a corresponding length of the core. "' 9. That careful and frequent mechanical tests be made upon the iron wire and hemp, and that the Company, as well as the contractors, be required to keep properly paid and respectable persons on the wiredrawers' premises, as well as at Messrs. Glass, Elliot, and Co.'s Works, to check the strength and elongation of these materials. (Signed) "Douglas Galto...

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From the Publisher

This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1878. Not illustrated. Excerpt: ... specification at a high standard to be fixed by the electrical advisers of the Company, but at not less than 85 per cent. "' 2. That ...

Format:PaperbackDimensions:36 pages, 9.69 × 7.44 × 0.07 inPublished:January 14, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217375022

ISBN - 13:9780217375023

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