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Glass insulators were first produced in the 's for use with telegraph lines. As technology developed insulators were needed for telephone lines, electric power lines, and other applications. In the mid 's a few people began collecting these antique glass insulators. Today there are over 3, insulator collectors. Insulator clubs , local and national shows , and good reference books are available. Did you already purchase the Price Guide Browser?

Glass Insulators were first produced in the 's for use with telegraph lines. As technology developed insulators were needed for telephone lines, electric power lines, and other applications. In the mid 's a few people began collecting these glass and porcelain insulators. Today there are over collectors, and insulator clubs, national shows, and good reference books are available. Hemingray used mold letters, dome numbers, and even oddly placed periods in some of their earlier insulators to denote which mold an insulator was produced from. However, it wasn't until , when Hemingray was purchased by Owens-Illinois, that they began embossing their insulators with specific mold and date codes. Dating Hemingray Insulators Decoding the date codes. Writen by Bill Meier. All Hemingray insulators since have had mold and date codes on them. In the Price Guide, these are generally referred to as [Numbers and dots] and [Number]. There are several different .

Matching Molds. Mysterious Hemingrays. For Sale - Looking to start your own collection?

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You can find insulators and go-withs for sale in this section. Wanted List - Hemingray insulators I'm looking for. Paying well above book value!

Hemingray was founded by Robert Hemingray and Ralph Gray. 's Hemingray started making lightning rod insulators. On December 19, Robert Hemingray receives a patent for the molding of telegraph insulators. Hemingray announced in January of it would move part of its glass factory operations to Muncie, IN. On May 2, Hemingray is granted the patent for .

What's New - Keep ated on my current goings-on and this web site. Laugh Lines - This is my comic for the insulator collecting hobby. Links - Some other insulator web sites I recommend checking out. Contact Me - Feedback welcome!

Consider, that dating hemingray insulators

As technology developed insulators were needed for telephone lines, electric power lines, and other applications. In the mid 's a few people began collecting these antique glass insulators. Today there are over 3, insulator collectors. Insulator clubslocal and national showsand good reference books are available.

Dating hemingray insulators

Did you already purchase the Price Guide Browser? Download it now. If you have questions or comments, please contact Bill Meier using this Feedback Form. Web site designed by Amber 8 Computer Consultants Special thanks to my wife Jill Meier for her help and understanding.

Try the new Insulators Web Site search! Auction status: Announce. It also has an old ball screw on top.

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China and India. I have a 1 oz glass with a glassmark on the bottom of an H in a circle. Anywhere that would have such information? Thank you for gathering such a vast amount of information for us glass history buffs! You might try contacting Bob Stahr, webmaster of Hemingray.

I have a green Hemingray insulator that is marked with the name and a on one side and Made in the U. Can you give me an estimated date of production and what this one was made for? And, how do I find the value and where can I sell to collectors?

Thanks, Desiree McKinney. Most aqua insulators made by Hemingray date up to the circa period, as they began switching over to clear glass during the early s. They were sometimes used on ordinary telegraph and telephone lines. Most of the Hemingrays were made in aqua and they are very common. However, other, more unusual colors are also found, and they are much higher in value.

It has a B embossed on the top of the dome. This insulator is light green. Would you be able to give an approximation as to when this may have been made. I am a fairly new collector and this is quite different from the other Hemmingrays that I have. Hello Kevin, You have the earliest style of beehive telegraph insulator made by Hemingray. They are most commonly found in medium aqua shades and many slightly different shades of light green, but many other colors have been found including sapphire blue, light pastel blue, orange amber, yellow amber, true medium and dark shades of green, clear, off-clear, purple, and white milkglass one example known of that color!

Some bear no shop letters at all. There appear to have been at least 3 or 4 slightly different molds manufactured for every letter except the upside down L.

They are very popular with collectors because of the wide color range and the shop letters. Hope this will be of some help! Hi David, Thank you very much that is extremely helpful and interesting. Your site is great! Hello David Real quick. The one I first ask of is my Hemingray but the number 2 is flipped over.

I seen 2 or3 of these aluminum frames with the skinny insulators and each one of the 4 has the symbol and a We live near the old Toledo and western trolley line near Pioneer and Fayette. Hi Christopher, You have found an example of a mold-maker error. I am guessing yours has a date code for I am not sure of how late they were made, but they are definitely one of the more recent, modern types of glass insulators made at the Hemingray factory in Muncie, Indiana.

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My father-in-law passed away recently and he was a collector of glass and ceramic insulators. Probably had close to of them in excellent condition with many styles and colors including glass and porcelain insulators.

I really appreciate your site with all this information. Any tips you can provide on determining their value would be greatly appreciated. Dave, the majority of insulators found do not have a high value most ranging in the 50 cents to 5 dollar value range.

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But there are also quite a few that are much scarcer and have values that range into the hundreds or sometimes even thousands of dollars. My site is not intended as an appraisal site.

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Your question is very difficult to answer in a brief way since the field of collecting glass and porcelain insulators is very wide. There are many websites that give information on various types of insulators. Here is a basic page with some of the most commonly asked questions on insulators.

My group would appreciate answers!

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Soon the current would be reduced to practically nothing, and it would be impossible or difficult to carry the electrical current very far. They are usually gray, white or brown in color. Glass insulators are now almost obsolete in the United States, although some of them are still in service here and there around the country.

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And some countries around the world use larger styles of glass insulators for high-voltage power lines even now. Please check out my webpage on Glass Insulators in generalplus there are gobs of webpages online where insulators, both glass and porcelain, are discussed in more detail. On the dome is 1.

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Do you know why. It might have been meant to signify a particular set of molds used on a particular automatic insulator-pressing machine.

A but there is no other numbers on it. What does that mean and when would it have been made? It is the large insulators.

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They were made in very large quantities and those colors generally date from to around No one is absolutely positive when the last aqua 42s were made, but probably circa I hope this helps answer your question. Hello I have several of these Hemingray insulators.

Insulator Collection - #2: Hemingray-9 (CD-107) \

Some have the name with a 9 and they are stamped with a colon. Does the 9 signify ?

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The numbers on the other side of the insulator such asas in your case is a combination mold and date code. Please see the comments farther down on this page where I have discussed this in more detail in several posts. If there are any dots to the right of the date code, add one year for each dot to arrive at the year the insulator was made.

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In your case since there are just 2 dots, that particular insulator was made in Does any one happen to know what that means? Each mold in this instance was engraved with a mold number as identification, so if there were any problems with the finished product, the mold involved could be quickly identified just by checking the mold number on the insulator. I have acquired one that as an 8 as well. is Christian Willis' Hemingray glass insulator web site. Welcome to! The Hemingray Glass Company operated between and was the largest manufacturer of glass insulators in the world. This web site is dedicated to providing information on every insulator style made by Hemingray. There's plenty of information. 4 Hemingray insulators, toll style insulators, electrical, clear glass, 4 assorted, C antique Telephone, Muncie Indiana, old glass BottlesandBygones 5 out of 5 stars $ Favorite Add to See similar items + More like this. Antique Hemingray 42 Clear Glass Insulator. Two Hemingray insulators - in "Hemingray Blue" and a medium shade of true green. The HEMINGRAY In , the "Hemingray" style insulator was introduced which was an ate/replacement for the Hemingray NO. 40 insulator. (The No. 40 had been in heavy production since , for telegraph lines).

It is a little different in that it says and then 5 dots. On the opposite side it says 18 under made in USA.

That's why the Hemingray 42 eventually became the main insulator and was the last generation of insulators. It worked well and they mass produced it. When the phone companies would take down a pole, they wouldn't save any of the insulators, they would just throw them in a hole in the ground. Make Offer - Hemingray No 9 Patent May 2 Antique glass insulator Full Of milky swirls Lot of 2 Vintage Glass Hemingray No 9 Aqua Amber Line Insulator w/ Mount Bracket $ New Listing 3 Hemingray #9 Clear Glass Insulators with Wood Insulator Pins. Nice Condition.

Others have said they just had the 8 or 4 without the 0.

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