IOTW CD 105
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CD 105 - Insulator of the Week on Thu, 27 Oct 2008
Nickname
"Lined dome"; "dotted and lined dome"; and "smooth dome" (to differentiate the variants).
Related Patents
Oakman patent for making glass insulator molds depicts what appears to be a CD 105: [1]
Details
Embossing Types:
- 1. Base of insulator is embossed: Am Ins Co Pat Sep 13 1881, with smooth dome, series of lines over dome, or series of lines and dots over dome;
- 2. Same as #1, except 1881 is abbreviated to "81" and smooth dome only;
- 3. Same as #1, except "Am Ins Co" is omitted, smooth dome only;
- 4. No embossing and smooth dome.
Colors: Varying shades of aqua and light green. A few have been found with moderate milky olive swirling or contaminants.
- PicturePoster #190677432 (lined dome)
- PicturePoster #211756045 (lines and dots)
- PicturePoster #189010084 (lt. green smooth dome)
- PicturePoster #202941606 (smooth dome w/rock)
- PicturePoster #116347518 (lined dome w/milk stringer)
Comments
Some exciting information has been uncovered regarding CD 105s (and others) that is shared at: [2] The Lyndeborough Glass Co of N.H., has been attributed to the manufacture of CD 105s. Whether they were the sole manufacturer we don't know for sure. The glass quality and colors appear to be quite similar, as if from the same source.
The purpose of the lines and dots (if any?) is a mystery. This CD is prone to damage, so finding a mint one can be quite challenging. We have reports of them being used in Nova Scotia, Canada. Anyone know of any other locales?
These brief comments on the Insulator of the Week are not intended to be complete and are presented to stimulate and encourage discussion and additional information from ICON. Now it's your turn to share info and/or post a photo of your favorite CD 105s!
Questions
None
Discussion
Bill Meier commented on Mon, 27 Oct 2008
In the full insulator patent reference library, this can be found at
![[1]](http://www.nia.org/timeline/patents/0304748a.gif){kind=link}