Notes

Power Line Insulator Question
Please see my page on that enterprise, and scroll down to the COMMENTS section see the reply by “Carol” where info on whiskey bottle codes liquor permit markings is pointed out. (Any similar bottle with a “D-code” such as “D-9” or “D-126” can automatically be assumed to have held whiskey or some distilled liquor). By the way, there ARE genuine purple glass Hemingray No. 9 insulators, but they date from the late 1890s or very early 1900s and do not have the exact same lettering arrangement as your comparatively modern day quantity 9.

Insulators have been essential by serving as a medium for attaching the wires to the poles, but a lot a lot more importantly, they have been essential to support prevent electric present loss during transmission. 1988, First transatlantic fiber-optic cable opens, New Jersey to England and France. Although glass insulators are the most common for the majority of collectors, a number of people gather porcelain insulators as effectively. In Europe, by contrast, in 1939, 84 % of extended distance circuits ran via cables.

On earlier insulators, many minor variations in the engravings reduce into the inside surface of the molds resulted in slight variations in the exact appearance, size and placement of the raised lettering seen on the surface of the glass. On some companies’ goods, far more than 1 style of lettering can be identified. For instance, the so-called “Script”, “Prism” and “Stamp” (“Typewriter”) styles of font which are noticed on lots of Hemingray insulators. Old photographs from about the U.S. show many telephone, telegraph and electric power poles sporting significant numbers of insulators arranged on crossarms.

In spite of a state-of-the-art factory, the glass was of poor quality and expensive to create. glass insulators Immediately after a lot of difficulties and setbacks, the Lynchburg Glass Corporation closed its doors in Might of 1925. Crackling is triggered by heating up glass, then dropping it in water. The glass ought to be hot adequate to stick with each other so as not to shatter, but nevertheless challenging enough to crack. Afterwards, the glass is returned to the oven to melt the outside smooth once more.

Glass Insulator Values

Insulators installed along railroads normally are coated, to some degree, with black soot. Sometimes the layers of soil are so heavy that the true colour of the insulator can't be discerned. Nearly all insulator collectors who are affiliated with the “organized hobby” of insulator collecting use CD numbers for a lot more clarity when communicating with other collectors by mail, e-mail, text or telephone. CD numbers are applied on a lot of ebay auctions, despite the fact that non-collectors who list insulators on ebay or other internet sales websites might not be familiar with the program. Also it is covered with straw marks and filled with bubbles. I visualize the peg inside was the original peg from possibly one hundred years ago.



They can be found from a single coast to the other, North to South. Perhaps one particular of the others will be able to be additional precise about which Glass Business created this specific piece and in what time frame. I happen to have about 3 dozen sitting in boxes in my shop, some from HEMINGRAY, some from BROOKFIELD and 1 or two from a single of the Denver, Colorado glass businesses. https://umek.pro/company/production All glass pin insulators are assigned a Consolidated Design quantity, a program initially implemented by hobbyist N.R. Every CD quantity corresponds to a specific glass style, shape, or manufacturer.

Nevertheless I got a very good acquire and you can nonetheless get 100 year old things for much less than $ten, possibly less than $five. We may possibly update this record primarily based on additional research and overview. Learn far more about our approach to sharing our collection on the net. I saw quite a few interesting pictures of damage to phone poles with various crossarms from hurricanes, tornadoes and ice storms. There were quite a few pictures of the AT&T bridle wire insulator along with accompanying documentation. However I in no way looked at them for the reason that I believed it was a scientific use insulator that was unrelated to what I was interested in.

Pin Insulator

A rapid search of the internet will bring up web-sites exactly where those books can be bought. 1 can of BKF can be mixed into a 5 gallon plastic bucket of water , and the insulators are very carefully immersed and left to soak for at least 24 hours. Because BKF contains oxalic acid in a extra diluted type, it may possibly or may well not be as successful as other solutions, but it is commonly a reasonably fantastic cleaner of glass. Right after soaking, get rid of the insulators, working with plastic gloves, and scrub very carefully with NON-scratching cleaning pads or OOOO-grade steel wool. Most insulators will respond well to cleaning with BKF, even though some may perhaps not.



It is referenced web page 143 of Volume 1 of the 'Insulators - A History and Guide to North American Glass Pintype Insulators.' by John and Carol McDougald. The CD 154 insulators on the bottom row are too dark to be purple so I suspect they are amber. The second and third row from the bottom are straw or clear. glass electrical insulators
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