Re: Alpine Tunnel Area Restorations
| January 07, 2013 03:34AM |
Stewart Rhine Wrote:
=======================================================
> Yes. I looked at it this morning - here's a bit
> more info. The insulator is 3.5" high and measures
> 2 1/4" at the base. The mold line goes up to the
> wire flange. The "I" is cast into both sides
> (same mold) and there are some heavy straw or
> casting marks in the top. I think it's a pretty
> standard design used on many railroad, etc com
> lines in the U.S. and Canada. I have a number of
> insulators dug from railroad r-o-w's. The best is
> a diamond shaped, single wire insulator with no
> threads inside. It's pre Civil War and came from
> the Northern Central Ry in Maryland.
>
> Stewart
===================================================
Your purple piece is going to be a CD 102, the mold originally engraved to show a bar above a diamond, but having the skirt plates re-turned, the diameter was bored out, obliterating the lower engraving of the diamond and bottom part of the bar. The bar is more pronounced toward the top, isn't it ? Made by Diamond / Dominion Glass Co. Not sure about the date ... teens ? The 102 was the standard local phone circuit glass from 1878, and died out slowly as the 106 design became more and more popular in the 1900's.
Does your "Diamond-shaped" threadless piece look *kinda* like this one directly below ? Sorry, could not find a better pic of an angular sided "egg" ...
Or does it look more like this one ?
... or something altogether different ?
Incidentally, the bottom one is one of only a few known that were used on an early-early line to Leadville from Denver. Two styles of threadless Brookfield are known, the 728 and this 731. A threadless oddity, because they bear the patent FOR threads, indicating they were retrofit items made special order to accommodate existing line hardware.
=======================================================
> Yes. I looked at it this morning - here's a bit
> more info. The insulator is 3.5" high and measures
> 2 1/4" at the base. The mold line goes up to the
> wire flange. The "I" is cast into both sides
> (same mold) and there are some heavy straw or
> casting marks in the top. I think it's a pretty
> standard design used on many railroad, etc com
> lines in the U.S. and Canada. I have a number of
> insulators dug from railroad r-o-w's. The best is
> a diamond shaped, single wire insulator with no
> threads inside. It's pre Civil War and came from
> the Northern Central Ry in Maryland.
>
> Stewart
===================================================
Your purple piece is going to be a CD 102, the mold originally engraved to show a bar above a diamond, but having the skirt plates re-turned, the diameter was bored out, obliterating the lower engraving of the diamond and bottom part of the bar. The bar is more pronounced toward the top, isn't it ? Made by Diamond / Dominion Glass Co. Not sure about the date ... teens ? The 102 was the standard local phone circuit glass from 1878, and died out slowly as the 106 design became more and more popular in the 1900's.
Does your "Diamond-shaped" threadless piece look *kinda* like this one directly below ? Sorry, could not find a better pic of an angular sided "egg" ...
Or does it look more like this one ?
... or something altogether different ?
Incidentally, the bottom one is one of only a few known that were used on an early-early line to Leadville from Denver. Two styles of threadless Brookfield are known, the 728 and this 731. A threadless oddity, because they bear the patent FOR threads, indicating they were retrofit items made special order to accommodate existing line hardware.
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488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter
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