Glass Insulators ~ Common Overview ~ Summary, History And Background The Corning Glass Works Company is the original producer of the Pyrex glass insulators. These are utilised in telephone lines and other low voltage functions. The Brookfield organization was amongst the leading producers of glass insulators, with most of them coming in a blue-aqua colour. Hemingray insulators come in many different colors, but blue is the most frequent.

  • Thus, the comparison I’ve made to the coin collecting hobby, with the numerous slight differences in coin die style details, as revealed under close scrutiny by serious collectors.
  • It has a smooth base, and you’ll find WUP, an acronym for WESTEN UNION PATTERN, inscribed boldly on the skirt.
  • Co. this auction is for a significant, quite in good condition will appear excellent in a area the clock functions requirements aa batteries with glass best.
  • Several, several distinctive cast iron or steel molds had been made use of over the years to create glass insulators, and the collection & study of old insulators can be compared, in some respects, to numismatics .


For instance, a cobalt blue glass insulator is worth about $300. As communication technology sophisticated, electrical consumption increased, glass insulators became needed for attaching wires to the poles. As a collector, the stunning colors of these antiques could possibly pique your interest. Thus, UMEK.PRO ’ve scrutinized the net and identified the ten most valuable antique glass insulators in the world these days. Most modern phone lines now make use of insulated sheathed cable, and a lot of are underground.

Color - The color of the insulator generally tends to make the most distinction in worth. For example, an aqua colored insulator could be worth $5, but a cobalt blue insulator could be worth $300! If you aren't certain what colour your insulator is, take a look at the Hemingray Colour Guide for a fundamental guide. The insulator price tag guide has a significantly much more thorough color guide. Yet another critical point to note is colors can be altered and there are fakes out there! Visit the Fakes & Reproductions web page for much more info.

Glass Insulator Reference Book No 2,: Most About



The costs of things in this article are sourced from authorized on the net antique stores, auction web-sites and online retailers. Seller Managed Delivery Shipping is provided and managed by the seller, through a shipper of the seller’s selection.Available on items at the seller’s discretion. Return Policy - All sales are final 48 hours right after delivery, unless otherwise specified.

A speedy search of the web will bring up web-sites where those books can be purchased. https://umek.pro/products/insulator-components in the skirt area are typically heavily stained with a coating of stubborn train smoke. Insulators installed along railroads typically are coated, to some degree, with black soot. Often the layers of soil are so heavy that the correct colour of the insulator cannot be discerned. From time to time an person mold can be identified by studying and comparing insulators that were developed from it over a considerable stretch of time.

antique glass insulators for sale

Vintage Glass insulators have been initial made in the 1850s for telegraph lines, then for phone and energy transmission lines. They insulated and protected the wooden poles from the electrical energy coursing through the wires. They are created from glass, porcelain, or composite polymer materials (non-conductive materials). Hemingray, Brookfield, and Whitall Tatum are some of the companies that created them.

Aside from the classic blue, these insulators also come in light green, ice blue, and aqua colors. Millions of Hemingray 42 glass insulators have been manufactured involving 1921 and 1960, generating them among the most typical glass insulators. Obtainable in aqua green color only, these dome-shaped insulators are collected mostly for their deep appealing color and unique style. The California Electrical Operates Corporation pioneered the use of CD 130.1 glass insulators. These insulators had been initial utilized in the 1870s as part of the initially extended-distance telephone line in between French Lake and French Corral in California. Has a lot of manufacturing imperfections and i see some kind of internal imperfection but can not really feel it.

If you are worried about reside critters, you can heat-treat the wood in the oven – come across YouTube videos on how to get rid of pine beetles from wood in the oven. You have a whiskey bottle or decanter made by Owens-Illinois Glass Enterprise. Please see my page on that corporation, and scroll down to the COMMENTS section see the reply by “Carol” exactly where info on whiskey bottle codes liquor permit markings is mentioned. (Any equivalent bottle with a “D-code” such as “D-9” or “D-126” can automatically be assumed to have held whiskey or some distilled liquor). Can you give me some hints as to where I can find insulators/not from antique shops/flea markets.

Vintage Armstrong No 2 Glass Insulator Stained Vibrant Green



The majority of the most frequently located varieties of glass pintype insulators have only nominal monetary collector value, possibly 50 cents to a dollar. That includes the very common types such as the Hemingray-42, Hemingray-45 and Whitall Tatum No. 1 and other folks. A notch above the most typical sorts will be located lots of insulators that variety in the 1 to five dollars worth bracket.

Each insulator was attached to the crossarm by being screwed onto wooden metal pegs or “pins”. A steel or copper tie-wire was attached to the insulator, and connected with the communication wire. These “pintype” insulators were an particularly commonplace sight, and communication lines with insulators had been strung alongside most roads, highways, and railroads. As extended as the insulator performed it is duty adequately, the colour and minor imperfections in the glass were of little concern. These “marks of crudeness and age” now add to their value and charm to collectors of antique insulators. The period from 1875 to 1930 may possibly normally be thought of as the “heyday” of the glass insulator.



These insulators are really light bluish with a hint of green and make for the excellent addition to your collection or as an accent decoration in your office, living space, or bedroom. Quite a few of the EC&M insulators in collection these days were used in telegraph and electric lines in the mining fields in Nevada, California, Arizona, Utah, and as far as British Columbia in Canada. This is my cd 149 Pennycuik glass insulator in light aqua. The real Emminger insulator is pretty uncommon with a worth properly over $ten,000 — the difficulty is the one particular pictured is basically a 3D printed plastic replica which is available on Ebay for around $50 plus shipping.

You can identify a CD-145 by its wire groove with a good, strong depth. These insulators also come with a letter B marked involving the wire groove and base. They also have the numbers 7,eight,ten,11,12 and feature a dot at the best. The CD 141.9 Emminger’s glass insulator is an all-time classic collectors, even seasoned ones, drool at the word Emminger’s. The amber-colored insulators by H.G.CO are the lightest and most likely most vibrant of all the colour variants. These insulators are also sought soon after due to the presence of compact bubbles that add pop and visual interest.

Modifications in the mold, such as re-reduce (re-tooled) engraving, repair, or the addition or erasure (“blotting out”) of the engraving can be found upon quite close inspection of the insulator. Thus, the comparison I’ve created to the coin collecting hobby, with the several slight differences in coin die design and style details, as revealed below close scrutiny by critical collectors. Throughout the 1960s, 1970s and 1980s many of these lines have been dismantled as technology sophisticated. Currently, a handful of lines utilizing glass insulators are nevertheless in service, but are only a tiny percentage compared to the heyday of open wire communication. The CD-128 Pyrex glass insulators were the smallest the business developed, creating them uncommon and extremely sought-soon after.

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