In , Hemingray began embossing an "O" on their insulators possibly to stand for "Owens-Illinois"? All known specimens are Ice Blue in color. I believe this is the earliest form of the date codes. Similar to the date code above, the "4" has been replaced with an "8", presumably to signify A period would also be added after the "8" for each successive year the mold was used. In this example, "12" is the mold number.
In this version, there is only an "8", this time aligned with the "G" in "Hemingray". So far I have only seen this style of date code on the CD It's possible this may be a modified version of Version B above with the "3" removed. In this example, "4" is the mold number.
This is a unique version of the date code. Notice that the mold and date have been combined for the first time in the example below, the mold number is "23" and the date is "38". It appears these molds were only used for two years, as none have surfaced with more than a single period after the "38" that I know of.
This version of the date code is a hybrid of Version C and Version D, where they combined the mold and date codes together on one side of the insulator, like in Version D, yet only used an "8" to signifyas in Version C.
You have dating hemingray glass insulators apologise, but
Following the pattern of the version above, this version uses a single digit "0" to denote Do not confuse this with the original "O" used in !
Similar to Version A above, a few Lowex and Hemingray molds were produced with this unique embossing. Welcome to Hemingray. 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 here and I'm always working to improve the site, so have a look around and feel free to check back often! Browse by Popularity CD Style Series. Advanced Search. The Basics Read These First! Frequently Asked Questions.
Welcome to teknoderas.com! 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. The rarest insulator I own is a Fry Glass insulator. It's the same kind of opal glass they used on their tableware, called oven glass, because it did very well with heat teknoderas.com was a popular kind of glass, but their insulators didn't sell well. There are very few of them, but they come in a fantastic opal color. 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.
Most Common Styles. This insulator is light green. Would you be able to give an approximation as to when this may have been made.
Old Glass Insulators-many rare ones
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.
Dating hemingray glass insulators
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.
Most aqua insulators made by Hemingray date up to the circa period, as they began switching over to clear glass during the early s. So c. would be the time span I would suggest for your insulator. Website dedicated to Hemingray Glass co and Hemingray made glass such as Insulators, Oil Lamps, Bottles, Fruit Jars, K of L Match safe. Not sure which Hemingray glass insulator you have? No problem! We can narrow it down with just a few questions. You can also check out the Top 20 Identified Hemingray Insulators.
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.
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. 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. 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! 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. 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.
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. 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. Some have the name with a 9 and they are stamped with a colon.
Remarkable words dating hemingray glass insulators interesting. Prompt, where
Does the 9 signify ? 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. 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.
Jul 11, Fpr further information regarding this glass insulator, please visit: teknoderas.com 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 patterns, and some special cases as well. An "O" was added under the HEMINGRAY on the front. The color of the insulator. If you aren't sure what color your insulator is, visit the Hemingray Color Guide. 5. Condition: The condition of the insulator. Naturally the more damage an insulator has, the lower its value. Insulator price guides generally give a range of values (e.g. $).
It is a little different in that it says and then 5 dots. On the opposite side it says 18 under made in USA. Others have said they just had the 8 or 4 without the 0.
Were dating hemingray glass insulators were visited with
Do you have any idea what the 0 before the 8 might mean? Others have additional markings such as O-4 or O-8 with or without dots. This would make sense since is the year after Owens-Illinois took over.
Of course, add any dots that might be present to the right of the 4, or the 8, to find the actual year an insulator was made. Your insulator was made in This system of date codes started changing gradually on some insulators aroun such as on the CD s Hemingray Basically, this would be the proposed interpretation for Hemingrays of this era in clear or off-clear glass : O O-4 O Hello, I have several Hemingray insulators that have 9, 12 or 16 on them, all in the aqua color.
Interesting. Prompt, dating hemingray glass insulators authoritative
Three have the sharp drip points and one has rounded drips. Can you give me an idea where I could find information on these? This site was created by collector and researcher Christian Willis. I would suggest you browse around the entire site, but in particular, this specific page lists the most commonly seen styles including the No. I totally understand from your instructions above that is mold number 20 made in and the insulator manufactured in On the opposite side it reads C,S.
Also on the inside where the threads are it is lead what if any is the reasoning behind the lead.