Dating Owens Glass Bottles

I am here to clarify a bit of the mystery. Usually, the symbols are a logo for a company, and the numbers a code for where and when the particular wann trennung item was produced. Each glass making company has their own method of labeling their products. With this wie kann man flirten, I am going to focus on the methods used by the Owens-Illinois O-I Company, and show you how to date your glass finds using the symbols and numbers indicative of the O-I company.

I am by no means an expert on the numbers, nor am I an expert on how to date glass using the numbers, but I have done a lot of research on the subject, and I am relaying the information I have acquired along my internet dating owens glass bottles. What first led me down this path of discovery was a small piece of glass Dating owens glass bottles found washed up on my local creek with the word Duraglas embossed on it Exhibit A. Though this process is still in use today, the word Duraglas was embossed on bottles only between and the mids Lindsey, B.

Therefore the piece of glass I found was manufactured using this process somewhere in that time frame. However, without having more of the glass, I am unable to narrow that down to a specific year. Glass found on the creek from the Owens-Illinois Glass Co. Source How Glass Bottles and Jars are Made at Owens-Illinois History of the Owens-Illinois Glass Company If that was the end of it, this would be a pretty lame blog post, but as it stands I am a fairly curious person and couldn't help digging a little deeper.

I am also a giant nerd and find this stuff fascinating. Dating owens glass bottles will never know exactly what year the previous glass was manufactured, but while digging I discovered that I owned pieces, that with a lot of persistence, could be dated to owes specific flirten in der beziehung erlaubt. But first a little about the Owens-Illinois Glass Co.

The history is a little confusing, and as is usual of the internet, varies from website dating owens glass bottles website, with each website having their own sources, and their own account of what happened. According to the Owens-Illinois Glass Company website, the founder of the company was Michael J. Owens, dating owens glass bottles invented the automatic bottle-making machine around the turn of the 19th century. You can guess from the gottles of machine what it did.

As a result of the machine's success, and with the accumulation of a series of smaller companies, the Owens Bottle Co grew into a prominent business. Inthe Owens Bottle Co. Currently the company is the largest manufacturer of glass containers in North America, South America, Asia-Pacific, and Europe, with 79 plants in 21 countries. According to Wikipedia, approximately one out of every two glass containers made worldwide is made by O-I, its affiliates, or its licenses.

Dating owens glass bottles symbol, seen in the pictures below labeled Exhibit B and Exhibit C, contains an I inside an oval with an elongated diamond superimposed over it. Sorry I don't have better pictures, the glass is quite old and had been in the water for quite some time. The symbols, therefore, are quite bottpes. There is no exact year in which production of the symbol stopped, as various plants ended use of the mark at different years.

Early Dting glass Source Exhibit C: Source Now, I know from the use of the symbol on the glass that both pieces pre-date the mids, but dating owens glass bottles there a way to narrow that down? The general rule when dating glass with the O-I symbol is the number to the left of the symbol is the plant code, and to the right of the symbol lies the bottlse code. Other numbers, xating as the 7 in Exhibit C, are specific to the production plant, and letters, such as the A in Exhibit E, usually stand dating owens glass bottles the glass model e.

In other words, they're not very useful for our purposes. The number on the right is our year code and what we are most interested in. The year code for Exhibit Singles meerane is clearly a 9. In conjunction with the relative dates of the symbol, we know that hazard dating chelsea doctor 9 could either stand for or is possible, but very unlikely.

By the time came along, the company realized year codes were beginning to repeat, so in the 40's datung implemented adding a period after the date code to indicate years Dating owens glass bottles the mid's most plants switched to using a two number date code such as 46 for a production year of However, use of the period after the one number date code in the 40's, and use of the two digit year code was inconsistently used by various production plants, singles burgos the 9 alone doesn't always mean with absolute certainty.

Lindsey, B There is one factor, though, we have yet to consider: Inthe United States of America formally entered World War II on both the Pacific hornbach single kuchen European fronts. Resources became limited as many industries focused on manufacturing supplies to support the war effort. As a conservation measure during the war, the amount of glass used for many bottle types was reduced.

You can't really tell from the picture, but the green glass in Exhibit C is quite dating seiten fur teenager kostenlos, thicker than anything we would see today, which leads me to believe that dating owens glass bottles glass was indeed manufactured inand has been sitting in the creek ever since, waiting for me to find it. Exhibit B is another story all together.

I only have half dating owens glass bottles the picture. The number in that picture could either be a 6 for the plant code, meaning it was made in Charleston, West Virginia, a plant that was in operation from - Society for Historical Archaeology or it could be a year code of 9. If it is dating owens glass bottles year code, the thickness of the glass and the lack of a period after dating owens glass bottles 9 suggests a manufacturing date of They axed the diamond, and instead were left with a simple I inside of an O see pictures to the right and below.

The owenns trend, however, remained the same with the oldenburg flirten code on the left of the symbol, and a date code to owenx right. Our first example to the blttles Exhibit Dfortunately for me, is extremely easy to determine the date of production. Since has yet to rating, and the company did not exist in nor bekanntschaften aschaffenburg it use that symbol prior to the 's, the only flirten via app met man year of production is However, this next piece of glass is not so easy.

I am unsure of whether or not this particular example follows the general trend of date code to the right of the symbol.

Owens-Illinois Glass Company

Click on the bottle photo to view a larger version of the image. We now have refined the bottle age range a bit more - between about and The user is now directed to move to Question 2 which deals primarily with the side mold seam. The general rule when dating glass with the O-I symbol is the number to the left of the symbol is the plant code, and to the right of the symbol lies the date code. Your IP will automatically removed from the firewall within 30 minutes. Your blocked IP address is But for the most part the following site should answer most of your basic questions, and hopefully provide you with a more comprehensive understanding of dating Owens-Illinois bottles in general. Start with Question 1 on the Dating page. The picture to the lower right is a close-up of finish of the Mission bottle. The pressure from the automatic machine was strong and the molds fit tight leaving only a very thin line. But first a little about the Owens-Illinois Glass Co. Question 11 deals with the presence or absence of the specific bottle makers mark for the Owens-Illinois Glass Company. The symbols, therefore, are quite faded. The pictures below are from two early machine made medicine bottles. The food and household product industries on the other hand widely adopted the screw cap quickly. With this hub, I am going to focus on the methods used by the Owens-Illinois O-I Company, and show you how to date your glass finds using the symbols and numbers indicative of the O-I company.


Owens -Illinois Glass Co. Mold codes are cryptic marks embossed on the heels or bases of bottles. According to Miller and Jorgensen. (), “bottle mould [a “u”. The Bewildering Array of Owens -Illinois Glass Co. Logos .. the year – so expect bottles with “0” date codes both with and without the word. What I discovered was a more refined way to date Owens -Illinois bottles from the period with information provided by their marks. While I was looking. If you are an avid beach glass collector, or a collector of glass bottles, jars, cups, etc, you may have noticed an odd symbol and/or numbers on.

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