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The E-14 B Story
Reprinted from "INSULATORS - Crown Jewels of the Wire", December 1976, page 16
Most of these actually turned out to be in either poor condition or weak color.
Investigation of the peculiar insulator showed that this was indeed an
experimental piece produced by Hemingray
under the direction of Owens-Illinois. The remainder of the same line on
which the E-14 B's were found, was
equipped with Whitall Tatum CSC, date coded, 1946. This is a good
indication as to the date of the E-14 B, but
is not confirmed.
The significance of the "E-14 B" is not known. However, the "CS" on the
reverse side does indicate that this
insulator was intended for a carrier system. Carrier is a method in which
several telephone circuits are
assigned a different frequency and carried simultaneously over one pair of
wires. (It must be remembered that
this is only a simplified explanation of a rather complex system.) Special
glass with certain insulation
properties is necessary to operate a carrier system. Hemingray, along with
several of the other glass companies,
was quite involved at this time in trying to find the glass properties
necessary for the carrier system.
Hemingray experimented with E-l (CD 128 and CD 100.6), E-2 (CD 122.4) and E-3 (CD 233), E-14 B and others (some for
carrier). Both Corning and Whitall Tatum
also had their experimental oddities.
The unusual color has been given various names, such as "vaseline",
"opalescent" and "moonstone". According to
an article that appeared in the August, 1973, issue of Old Bottle Magazine,
"Small phosphorous pellets were
stirred in-to the molten quartz glass at very high temperatures. Then ...
the insulators are always annealed by
slow cooking to prevent cracking or fractures ... The fire and color of the
opal depends on the internal planes
that reflect back the light. Fractures of the internal quartz cause the red
fire, blues, greens, and the
yellows". The annealing process "might have been omitted ... and the
insulator would have (minute) internal
fractures like true opal..." This is only one of the several interesting
theories as to how this vaseline glass
came about. Another theory of a few years back claimed that the E-14 B was
colored by the sun; but this is very
doubtful. In addition to the vaseline colors, milkglass has been found. It
is doubtful that any of the milkglass
insulators were ever used on the line, as they were located in the
Hemingray, Muncie, Indiana, dump.
The E-14 B glass has unusual properties, unlike most others. Although this
glass is very weak and soft, it also
seems to absorb impurities from the soil where it was buried. The soil
around Lake Okeechobee is high in acid,
and this tended to "eat" up the glass. I saw a beautiful top of a piece
sticking out of the ground, but the
lower half of the E-14 B insulator under the surface was almost gone, as if
it had been dissolved in the mud.
Some of the earlier collectors learned what their cleaning acid did to this
E-14 B glass. After a short time in
the solution, all that was left was a pile of broken glass.
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