IOTW CD 251
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| ==Related Patents== | ==Related Patents== | ||
| - | No specific patent for this style found, but some of the NEGMs carry the patent date for a cable design patent: {{Patent | + | No specific patent for this style found, but some of the NEGMs carry the patent date for a cable patent: {{Patent |
| | number = 430,296 | | number = 430,296 | ||
| | patentee = Samuel Oakman | | patentee = Samuel Oakman | ||
Revision as of 14:44, 7 February 2008
Contents |
Insulator of the Week
CD 251 (plus CD 250) - Fri, 7 Feb 2008
Nickname
General term is "Cabletop"
Related Patents
No specific patent for this style found, but some of the NEGMs carry the patent date for a cable patent: Utility Patent 430,296 issued to Samuel Oakman on November 1, 1889
Details
Embossing Types: Hemingray, Lynchburg & NEGM Co
Hemingray: Colors run from shades of aqua and Hemingray blue, to clear; blue tint and ice blue on their later units. There were several embossing variants produced by Hemingray. The three primary variations for style number embossings are: "Hemingray-61", "Hemingray No 1 Cable" and "Hemingray No 61 Cable", with the last two also containing the May 2, 1893 patent date. Base configurations include smooth base, corrugated base, sharp drips and round drips. This style appears to have seen wide use across the country---anyone know of an area where they were used in large quantities?
Here's a great pic of three Hemingray CD 251s in service, with a good example of how they were tied:
Lynchburg: Found mostly in a uniform light shade of aqua with a smooth base or sharp drips. A few have been found with milk swirls. All are marked with the trademark "L" in a circle and "Made in No.1 U.S.A." Lynchburg evidently acquired NEGM molds, as some are found with the NEGM embossing blotted out. I obtained several of these from a city lighting lineman's collection that were picked in the Pasadena, CA, area, along with a couple of aqua Hemingray CD 251s. Any known from other locations?
N.E.G.M. Co.: By far the most colorful of the CD 251s, available in ice blue and several shades of aqua, plus dark blue and gorgeous shades of green, yellow green, emerald green and olive green. Some have been found with amber swirls. Found with smooth or rounded base.
CD 250 N.E.G.M. Co.: Decided to include this one since it's a rare variant of the NEGM CD 251. It is only listed in aqua with a smooth base. What makes this distinctively different from a CD 251 is the absence of an inner skirt. I have only seen one example that resides in a Southern California collection. Are there any others known? The book value of $10,000-15,000 obviously indicates it is a rarity.
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These brief comments on the Insulator of the Week are not intended to be complete and are presented to encourage discussion and additional information from ICON. Now it's your turn to share info and/or post photos of your favorite CD 251s or that illusive CD 250!
