Most insulators made by Whitall Tatum or Armstrong are common, but again, some exceptions are out there. All dots around the year code should be counted a colon counts as two dots , and added to the date of mold manufacture. In actuality, this A appears to be merely an upside-down V which was used by the moldworker. I hope this helps answer your question. Found them all thanks to this forum. The 4 or 8 may or may not be followed by dots. Armstrong Cork Company acquired the glass plants of Whitall Tatum Company in 1938, and that particular insulator mold was made in 1944.
If they are, go on to another character and keep looking for exact matches in orientation relative to each other. The bottle was presumably made by Whitall Tatum for United Drug Co. My dad worked many hours climbing the poles. Please check out my webpage on in general , plus there are gobs of webpages online where insulators, both glass and porcelain, are discussed in more detail. You can google that and see various examples of that style of insulator. That chart was published by Owens-Illinois in 1964.
If you meant something else, please elaborate. Continued exposure of the glass to sunlight may cause the color to deepen somewhat, but it depends on how much manganese is present in the glass. You might find a few pics or other info on them by checking the sites Hemingray. Firstly, which size of Hemingray glass insulator price guide is your choice according to international standards? In general, most of the glass insulators you see at a yard sale, flea market, or an antique store will be of the more common variety. Peach, pink, purple shadesare less common and will be higher in value. If there are any numbers or letter out of alignment, note that and compare with other examples to see if they are placed in the exact same position.
For more information, please see a query I received which is posted near the bottom of this page. I found an interesting insulator, it's a Hemingray and on the back has Patented May 2 1893. I hope this makes sense. The transition to off-clear glass began approximately 1930. Date codes were began to be implemented around 1933 or shortly afterward, that being the year that acquired ownership of the Hemingray facility. The number of different molds used to manufacture these insulators is staggering……. Some may be answered directly by email, others posted on the site.
Some geneaology- oriented websites may have city directories in their databases with information that could be helpful. No need to leave you all guessing. Best regards, David Hi David, Thanks for the great info on these neat insulators! I simply don't have the time, energy or knowledge to answer many of the questions submitted here. If there are no dots, it was made in 1949. Many examples of this insulator in this color tend to have a dull, dinghy or dirty appearance to them, but this is about the clearest, cleanest one I have ever come across. David Blaze, I assume you meant that you have aqua blue-green Hemingray-42s that do not have any mold numbers or date codes on them.
Sat, February 23 in 15 days Sat, March 9 in 15 days Sat, March 9 in 16 days Sun, March 10 in 22 days Sat, March 16 in 28 days Fri, March 22 2 day show in 29 days Sat, March 23 in 43 days Sat, April 6 in 43 days Sat, April 6 in 43 days Sat, April 6 in 44 days Sun, April 7 in 112 days Fri, June 14 3 day show in 154 days Fri, July 26 3 day show in 476 days Fri, June 12 3 day show search time 0. Glass insulators were first produced in the 1850's for use with telegraph lines. And, how do I find the value and where can I sell to collectors? Take care, David Hello, hoping you can help me identify a whitall tatum insulator i have. I really appreciate your site with all this information. Can you give me an estimated date of production and what this one was made for? My advice to you would be to check out the insulators. Thank you for your patience and understanding! Add the Price Guide Browser by Bill Meier Access Price Guide information on your computer where you can look up prices and see the scale drawings with a few simple mouse clicks Visit for a full demo To order, send check, money order or PayPal to: P.
Try the new Insulators Web Site search! Hi Christopher, You have found an example of a mold-maker error…. Sometimes a letter in the top line of text is virtually touching a letter in the line below. If you aren't sure what color your insulator is, visit the. RedBook 10, Mouth-Blown Bottle - Kendrick, Bottle Makers and Their Marks, and The Illustrated Guide to Collecting Bottles. Is this a rare jar? Insulators: The Hidden Obsession Hemingray Glass Co. Most casual sellers on ebay do not know the average value of an insulator they are listing, and often try to start an auction at an outrageously high starting bid………and then they get zero interest in their auctions. It is one of the best to explain what was done to make bottles.
My site is not intended as an appraisal site. In your case since there are just 2 dots, that particular insulator was made in 1954. Hope this helps, David I have 5 white milk glass pharmacy jars with lids about 6 inches tall with lids on. I appreciate hearing from people experienced in the field as to what is really a good source of information. It may have been manufactured months or years after the one on the left.