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| | Information about telegraph infrastructure, devices, and practices. | | Information about telegraph infrastructure, devices, and practices. |
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| − | ==Telegraph/Telephone Poles==
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| − | Most railways built in the early part of the 20th Century had telegraph wires installed on poles parallel to the track. The poles used were typically 25 feet long, with about 3 or 4 feet buried. When manufactured, each pole had markings applied to it showing information about the manufacturer, date of manufacture, species of tree, preservative code, class (circumference, i.e. strength) and length. The markings were usually applied as a hot brand burned into the wood at a location 10 feet from the butt (larger end of the pole). The initials of the utility company may or may not be included in the brand. The year the pole was manufactured is included in the brand. This typically is usually only a year or two before installation. <ref>http://www.archchemicals.com/Fed/WOLW/Docs/Original/CCA_Pole_brochure.pdf:CCA_Pole_brochure.pdf</ref>
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| − | ==Date Nails==
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| − | Utility and railway companies sometimes put date nails into the poles when installed. This is the year the pole actually went into service. Such nails are now collectors items, but it is illegal to remove them from utility company property. Date nails are no longer used by most companies. Some companies used two nails, one for the tens digit and another for the ones digit. Date nails were also used in railway crossties. <ref>http://facstaff.uindy.edu/~oaks/DateNailInfo.htm</ref>
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| | ==Notes== | | ==Notes== |
Revision as of 21:25, 7 March 2013
Dominion Atlantic Railway Telegraph
Information about telegraph infrastructure, devices, and practices.
Notes
References
Gallery
Pages in category "Telegraph"
The following 4 pages are in this category, out of 4 total.
