The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern.

628 ATLANTIC OCEAN TELEGRAPHY. made 214 miles from shore, being then in lat. 52~ 27' 50" N., long. 16~ 00' 15" W. At this time we experienced an increased swell, followed late in the day by a strong breeze. From this period, having reached 2,000 fathoms water, it was necessary to increase the strain to a ton, by which the rate of the cable was maintained in due proportion to that of the ship. At six in the evening some difficulty arose through the cable getting out of the sheaves of the paying-out machine, owing to the tar and pitch hardening in the grooves, and a splice, of large dimensions, passing over them. This was rectified by fixing additional guards, and softening the tar with oil. It was necessary to bring up the ship, holding the cable by stoppers, until it was again properly disposed around the pulleys. Some importance is due to this event, as showing that it is possible to lay to in deep water without continuing to pay out the cable-a point upon which doubts have frequently been expressed. Shortly after this, the speed of the cable gained considerably upon that of the ship, and up to nine o'clock, while the rate of the latter was about three knots by the log, the cable was running out from five and a half to five and three quarter knots per hour. The strain was then raised to twentyfive cwt., but the wind and sea increasing, and a current at the same time carrying the cable at an angle from the direct line of the ship's course, it was not found sufficient to check the cable, which was at midnight making two and a half knots above the speed of the ship, and sometimes imperilling the safe uncoiling in the hold. The retarding force was, therefore, increased at two o'clock to an amount equivalent to thirty cwt., and then again, in consequence of the speed continuing to be more than it would have been prudent to permit, of thirty-five cwt. By this the rate of the cable was brought to a little short of five knots, at which it continued steadily until 3.45, when it parted; the length paid out at that time being 380 statute miles. I had up to this time attended personally to the regulation of the brakes; but finding that all was going on well, and it being necessary that I should be temporarily away from the machine, to ascertain the rate of the ship, and to see how the cable was coming out of the hold, and also to visit the electrician's room, the machine was for the moment left in charge of a mechanic, who had been engaged from the first in its construction and fitting, and was acquainted with its operation. I was proceeding toward the fore part of the ship, when I heard

/ 876
Pages

Actions

file_download Download Options Download this page PDF - Pages 628-632 Image - Page 628 Plain Text - Page 628

About this Item

Title
The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern.
Author
Shaffner, Taliaferro Preston, 1818-1881.
Canvas
Page 628
Publication
New York,: Pudney & Russell; [etc., etc.]
1859.
Subject terms
Telegraph

Technical Details

Link to this Item
https://name.umdl.umich.edu/agy3828.0001.001
Link to this scan
https://quod.lib.umich.edu/m/moa/agy3828.0001.001/636

Rights and Permissions

These pages may be freely searched and displayed. Permission must be received for subsequent distribution in print or electronically. Please go to http://www.umdl.umich.edu/ for more information.

Manifest
https://quod.lib.umich.edu/cgi/t/text/api/manifest/moa:agy3828.0001.001

Cite this Item

Full citation
"The telegraph manual: a complete history and description of the semaphoric, electric and magnetic telegraphs of Europe, Asia, Africa, and America, ancient and modern." In the digital collection Making of America Books. https://name.umdl.umich.edu/agy3828.0001.001. University of Michigan Library Digital Collections. Accessed June 23, 2025.
Do you have questions about this content? Need to report a problem? Please contact us.