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History of the kostenlos flirten in leipzig Owens-Illinois Glass Company

If that was the end of it, this would be a mann schlägt treffen vor 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.) I 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 a specific year.

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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 to website, with each website having their own sources, and their own account of what happened. I’ll gloss over all that and share what seems the most accurate.

According to the Owens-Illinois Glass Company website, the founder of the company was Michael J. Owens, who invented the automatic bottle-making machine around the turn of the 19th century. You can guess from the title of machine what it did. The automatic bottle-making machine revolutionized the industry, and became the foundation of today’s glassmaking industry. As a result of the machine's success, and with the accumulation of a series of smaller companies, the Owens Bottle Co (1911-1929) grew into a prominent business.

In 1929, the Owens Bottle Co. merged with the Illinois Glass Co. forming the company it is now (with a few changes along the way). Currently the company is the largest manufacturer of glass containers in mann schlägt treffen vor North America, South America, Asia-Pacific, and Europe, with 79 plants in mann schlägt treffen vor 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.

1930 to Mid-1950s

Shortly after the Owens-Illinois Glass Co. merged into existence, the company began utilizing a new symbol to mark their products for identification purposes of recycled bottles, and for various other reasons. The 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 faded.) Production of this particular mark ended somewhere in the mid 1950’s. There is no exact year in which production of the symbol stopped, as various plants ended use of the mark at different years.

Now, I know from the use of the symbol on the glass that both pieces pre-date the mid-1950s, but is there a way to narrow that down? Yes there is. 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. Other numbers, such as the 7 in Exhibit C, are specific to the production plant, and letters, such as the A in Exhibit E, usually stand for the glass model (e.g. an A may mean soda bottle, etc.) 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 C is clearly a 9. In conjunction with the relative dates of the symbol, we know that the 9 could either stand for 1939 or 1949 (1959 is possible, but very unlikely). By the time 1940 came along, the company realized year codes were beginning to repeat, so in the 40's they implemented adding a period after the date code to indicate years 1940 -1949. By the mid-40's most plants switched to using a two number date code (such as 46 for a production year of 1946). 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, therefore the 9 alone doesn't always mean 1939 with absolute certainty. (Lindsey, B) There is one factor, though, we have yet to consider: the thickness of the glass.

In 1941, the United States of America formally entered World War II on both the Pacific and 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 thick, thicker than anything we would see today, which leads me to believe that the glass was indeed manufactured in 1939, and 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 of 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 1930 - 1963 (Society for Historical Archaeology) or it could be a year code of 9. If it is a year code, the thickness of the glass and the lack of a period after the 9 suggests a manufacturing date of 1939.


Im hoping to go at least once or twice before the year is out. Thanks NH, Its true lots of expense, travel, time and many empty Those are the ones! As a collector of New Hampshire glass all those beauties make me jealous! Great finds and I know a lot of hard work and time went into finding these Last Jump to page: Results 1 to 10 of On almost a weekly basis someone will come along and inquire about dating bottles, with many of the inquiries dating owens illinois bottles related to Owens-Illinois bottles, and especially acls.

And althought this subject has been discussed many times in numerous threads, I thought this would be a good time and place to share where I personally obtained most of my information regarding this. The link below will take you to a website that should answer most, if not all dating owens illinois bottles your Owens-Illinois dating questions. And please be sure to save the link in your favorites file for future reference.

It is one of the most informative sites I know of on the subject. And yet, even with this said, the site dating owens illinois bottles not answer "everything" related Owens-Illinois bottles, which leaves me doing additional research of own in an attempt to find the answers.

For example; I have often wondered Because there were more Owens-Illinois glass plants than any other? Because Owens-Illinois aggressively pursued that market? Because Owens-Illinois was the first and most advanced to adopt the acl process? Or some other reason? So are still a few unanswered questions as you can see. 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.

I hope you find this information helpful. And I am sure you will, especially if you reading the more empirical discourses as I do. What the heck dating owens illinois bottles "Empirical" mean? Derived from or guided by experience or experiment. Depending upon experience or observation alone. Provable or verifiable by experience or experiment. Dating owens illinois bottles do dating owens illinois bottles not the majority.

Because no one thought about it? Because there was no need for it? Because it was not required? Bill Lockhart is not only an advanced researcher, he is also a bonafide "Archaeologist. Note the absence of a dot dating owens illinois bottles the 5 which tells us it is a bottle. But all of the list I have seen indicate that the Portland, Oregon Owens-Illinois glass plant did not begin operation until The only thing I can think of is that the 21 is a transfer number from glass dating owens illinois bottles that closed prior toand that it was somehow overlooked by the individuals who compiled the various Owens-Illinois list.

I will be sure to ask Bill Lockhart about this the next time I e-mail him. Note the 21 for Portland, Oregon, with indicates a dating owens illinois bottles date of approximately Most of these were made by Owens-Illinois. This would at first indicate that the bottle was from However, they also have the "Duraglas" logo the side, indicating them being from after So, when did Owens-Illinois realize their date code system was flawed?

It certainly took place after I believe it was even later, as the same situation occurred with a bottle from It answers your question s to some extent. But I hear ya and agree there is some confusion regarding all of this stuff. Did they actually put a man on the moon or was it D] Dating owens illinois bottles for stopping by. And even though it is almost identical to the one I posted earlier, one is the real deal, but with a few subtle differences.

It has an amazing amount of information that I would be happy to share with anyone who has a specific question they cannot find elsewhere. Took a few hours, but it was worth it.

Now I have a picture of each page of the stored on my computer. This book is a lifesaver. Early 19th Century Decorative Glass. Bookmarks Bookmarks Digg del. Bracebridge Dairy - smaller size Some Rock Dump finds including a Anyone collect antique Listerine Posted By bottlehawk 2 replies Yesterday, Age of Bottle With Disk Pontil?

All times are GMT The time now is Copyright Congregate Media, LP


Owens-Illinois Glass Company was the result of the merger between two glass-making giants of the industry: Base codes on Owens-Illinois amber glass handled jug, or date code, made at factory B was jug style number.

Pic courtesy of Crystal Arant. See list of 19 currently operating glass container plants in North America, farther down on this page. Most of the pics show the first and most widely recognized mark used beginning in As pictured, it can vary slightly from one container to another.

Latest confirmed date code with this older trademark known on a bottle is On the typical bottle, there is usually a number to the left dating owens illinois bottles, to the right of, and below, the trademark. Several of the plant numbers used by O-I have been re-used by other plants opened in later yearsso it is important to take into consideration the date code, the bottle style and other characteristics to positively identify plant location made a particular bottle.

Most bottles from the late mann schlägt treffen vor s into the s and s have two-digit date codes. For more info, check out the extensive article by Bill Lockhart and Russ Hoenig; link farther down on this page. The second mark was phased in during the s with the removal of the diamond. Some bottle molds already in use were not until as late as,even, as mentioned, in Also, there are several posts scattered through the comments farther down on this page where we have discussed this question.

Photo of Taylor McBurney. Thanks to Ken Rudd for submitting this photo. Hemingray was a prolific maker of electrical insulators of many types and sizes for power lines, telegraph, telephone and other uses.

Within a year or two, most glass insulators produced at Muncie were carrying date codes. See my webpage on Hemingray Glass Company for more information on Hemingray insulators.

Known as Owens-Illinois, Inc. They are located in: Montreal, Quebec and Brampton, Ontario. To return to the main Glass Bottle Marks page, please click here. Please click here to go to my Home Page. Hope this helps, David.

I have found an old Owens Bottle Co. Does anyone have information on this book? I found an amber jar with the I in an O no diamond from plant 14, but the date code is just a 0 no period. Vicki, single digit date codes were still used in the s and afterward. Not nearly as often as double-digit date codes, but they were used occasionally, especially on smaller containers.

I would guess your jar was made in either or Since there dating owens illinois bottles no period behind the 0 I assumed it was the s but it also has raised letting on the foot of the bottle saying Duraglas. So would this have been made in the s at the Bridgeton, NJ plant? I dating owens illinois bottles it would be fromalthough it might stand for I do NOT subscribe to the theory that ALL date codes without a dot to the right of the number necessarily means it is from the s, and all date codes WITH dots are from the s or later, but dating owens illinois bottles seems to be true in quite a few cases.

How long did owen illinois use the I inside an O mark. I have a bottle with the I inside an O mark with a date code of If anyone who lands on this site has better information on the changeover, please contact me and I will update the page.

Hi David, First, Thank you so much for establishing this I have gathered so much information already. I feel I have started a hobby that my Father also shares a passion for, collecting glass bottles. Not exactly sure what It should be labeled as. It is clear in color and has a metal screw on type lid along with a wooden rotating handle fitted to a metal bracket attached along the base of the neck. The bottom of the jug is not smooth, has a very textured finish.

I have a 7 on the left, a 7 on the right, and a 1 below with no numbers above. The bottom of the base has a large below the other numbers. Any information is greatly appreciated. Thank you again for the great website. I would suggest you search Google Images with those keywords and dating owens illinois bottles if a similar container shows single frau sucht mann sie meint es ernst up in the results.

I found an old looking bottle under my house when I was digging a fire pit. It has an odd texture and 2 vertical seems running up the sides. I cleaned it off and able to make out the diamond with an I and O in dating owens illinois bottles. I found the bottom of a jar washed up on the shore of lake Michigan.

The logo is the I in an oval and a diamond. Left is 7, right is 5, bottom dating owens illinois bottles 5. Dating owens illinois bottles just curious which year the 5 stands for. Sarah, it could stand for, or It has a finger loop at the neck and the Owens Illinois diamond on the bottom.

It has a 1 over a on the bottom as well as on the bottom with considerable wrinkles in the glass from manufacturing of the jug possibly straw marks as I am not sure. My question is dating owens illinois bottles was this jug used for? Was it a fuel jug or could it have been sold as a multi-purpose container for other Mike, yes, it is a multi-purpose container.

Those jugs were used for various liquids, such as dating owens illinois bottles, soda syrup, apple cider, etc. There is no way to be sure what was in it unless there is an intact label. Mike this is so cool… believe it or not today I purchased at a garage sale the same exact jug with the same markings on the bottom except mine has!

I was going to ask the same questions you did so thanks for doing all the work for me! I found several bottles. The first one has a 7 than the circle with the I in it and then a 9 dating owens illinois bottles in one row.

Below that is a single 9. Below that is the word duraglas. And below that is E — Can you help me identify it? I found a clear jar. It has the logo I inside o dating owens illinois bottles diamond to the left is a 4, to the right is a 6, underneath is an I or a 1.

And it has 7 rings around it. It says duraglas on 2 sides… with a c Can you tell me what year it made? Thank you in advance. It has the number 7 to the left of the symbol, 6 to the right, and a 3 below it. It also has an X in the middle of the jug.

I was hoping you could give me some information and history about this jug. Or it might have been used for edible products such as Cola syrup, vinegar or apple cider. I was able to identify my bottle with ease. You have put a lot of work into it and I appreciate it. Look forward to using your site again as I find more cool bottles. Anyone ever see an IP for factory code? Eric, there dating owens illinois bottles examples out there that seem to make no sense, according to what information is known on the factory location and date codes.

However, I would submit my guess that in some of these instances, the bottle mold might have been moved to another plant but the engravings were not all updated retooled correctly on the molds.

They have a circle inside a square on bottom. I also found 4 simalar bottles one in which is 2. The last do not have the green tint or bubbles in the glass but the shape seems to be almost indentical.

See my page on that mark. They are probably medicine bottles of some sort. I have found something that looks like a rare bottle that Edwin W Fluerst patented with I believe that means it is an Owens bottle. The sides of the bottle has sort of dating owens illinois bottles decorative look. Like I said looks dating owens illinois bottles the patented bottle but then it has the additions to it.

Can you give me any information about it?


Glass Bottle Identifications #1: 4 Small Bottles

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Owens-Illinois Glass Company was the result of the merger between two glass-making giants of the industry: Base codes Owens-Illinois amber glass handled jug, or date code, made at factory B was jug style number.

Pic courtesy of Crystal Arant. See list of 19 currently operating glass container plants in North America, farther down on this page. Most of the pics show the first and most widely recognized mark used beginning in As pictured, it can vary slightly from one container to another. Latest confirmed date code with this older trademark known on a bottle is On the typical bottle, there is usually a number to the left of, to the right of, and below, the trademark.

Several of the plant numbers used by O-I have been re-used by other plants opened in later yearsso it is important to take into consideration the date code, the bottle style and other characteristics to positively identify which plant location made a particular bottle. Most bottles from the late s into the s and s have two-digit date codes.

For more info, please check out the extensive article by Bill Lockhart and Russ Hoenig; link farther down on this page. The second mark was phased in during the s with the removal of the diamond. Some bottle molds already in use were not re-engraved until as late as,even, as mentioned, in Also, there are several posts scattered through the comments farther down on this page where we have discussed this question. Photo courtesy of Taylor McBurney. Dating owens illinois glass to Ken Rudd for submitting this photo.

Hemingray was a prolific maker of electrical insulators of many types and sizes for power lines, telegraph, telephone and other uses. Within a year or two, most glass insulators produced at Muncie were carrying date codes. See my webpage on Hemingray Glass Company for more information on Hemingray insulators. Known as Owens-Illinois, Inc. They are located in: Montreal, Quebec and Brampton, Ontario.

To return to the main Glass Dating owens illinois glass Marks page, please click here. Please click here to go to my Home Page. Hope this helps, David. I have found an old Owens Bottle Co. Does anyone have information on this book? I found an amber jar with the I in an O no diamond from plant 14, but the date code is just a 0 no period. Vicki, single dating owens illinois glass date codes were still used in the s and afterward.

Not nearly as often as double-digit date codes, but they were used occasionally, especially on dating owens illinois glass containers. I would guess your jar was made in either or Since there is no period behind the 0 I assumed it was the s but it also has raised letting on the foot of the bottle saying Duraglas. So would this have been made in the s at the Bridgeton, NJ plant?

I suspect it would be fromalthough it might stand for I do NOT subscribe to the theory that ALL date codes without a dot to the right of the number necessarily means it is from the s, and all date codes WITH dots are from the s or later, but that seems to be true in quite a few cases.

How long did owen illinois use the I inside an O mark. I have a bottle with the I inside an O mark with a date code of If anyone who lands on this dating owens illinois glass has better information on the changeover, please contact me and I will update the page. Hi David, First, Thank you so much for establishing this website. I have gathered so much information already.

I feel I have started a hobby that my Father dating owens illinois glass shares a passion for, collecting glass bottles. Not exactly sure what It should be labeled as. It is clear in color and has a metal screw on type lid along a wooden rotating dating owens illinois glass fitted to a metal bracket attached along the base of the neck. The bottom of jug is not smooth, has a very textured finish.

I have a 7 on the left, a 7 on the right, and a 1 below with no above. The bottom of the base has a large below the other numbers. Any information is greatly appreciated. Thank you again for the great website. I would suggest you search Google Images with those keywords and see if a similar container shows up in the results.

I found an old looking bottle under my house when I was digging a fire pit. It has an odd texture and 2 vertical seems running up the sides. I cleaned it off and was able to make out the diamond with an I and O in the middle.

I found the bottom of a jar washed up on the shore of lake Michigan. The logo is the I in an oval and a diamond. Dating owens illinois glass is 7, right is 5, bottom is 5. Im just curious which year the 5 stands for. Sarah, it could stand for, or It has a finger loop at the neck and the Owens Illinois diamond on the bottom.

It has a 1 over a on the bottom as well as impressed on the bottom with considerable wrinkles in the glass from manufacturing of the jug possibly straw marks as I am not sure.

My question is what was this jug used for? Was it a fuel jug or could it have been sold dating owens illinois glass multi-purpose container for other Mike, yes, it is a multi-purpose container.

Those jugs were used for various liquids, such as vinegar, soda syrup, apple cider, etc. There is no way to be sure what was in it there is an intact label.

Mike this is so cool… believe dating owens illinois glass or not today I purchased at a garage sale the same exact jug with the same markings on the bottom except mine has! I was going to ask the same questions you did so thanks for doing all the work for me! I found several bottles. The first one has a 7 than the circle with the I in it and then a 9 all in one row. Below that is a single 9.

Below that is the word duraglas. And below that is E — Can you help me identify it? I found a clear jar. It has the logo I inside o with diamond to the left is a 4, to the right is a 6, underneath is an I or a 1. And it has 7 rings around it. It says duraglas on 2 sides… with a c Can you tell me what dating owens illinois glass it was made? Thank you in advance. It has the number 7 dating owens illinois glass the left of the symbol, 6 to the right, and a 3 below it.

It also has an X in the middle of the jug. I was hoping you could give me some information and history about this jug. Or it might have been used for edible products such as Cola syrup, vinegar or apple cider. I was able to identify my bottle with ease. You have put a lot of work into it and I appreciate it. Look forward to using your site again as Dating owens illinois glass find more cool bottles.

Anyone ever see an IP for factory code? Eric, there are examples out there that seem to make no sense, according to what information is known on the factory location and date codes. However, I would submit my guess that in some of these instances, the bottle mold might have been to another plant but the engravings dating owens illinois glass not all updated retooled correctly dating owens illinois glass the molds.

They have a circle inside a square on the bottom. I also found 4 simalar bottles one in which is 2. The last 4 do not have the green tint or bubbles in the glass but the shape seems to be almost indentical. See my page on that mark. They are probably medicine bottles of some sort. I have found something that looks like a rare bottle that Edwin W Fluerst patented with I believe that means it is an Owens bottle.

The sides of the bottle has sort of a decorative look. Like I said it looks the patented bottle but then it has the additions to it.

Can you give me information about it?


A few years I was asked to conduct the analysis of a fairly large assemblage of amber bottle glass that was excavated by the University of Texas at Dating owens illinois glass Paso.

Most of the artifacts were fragmentary and consisted dating owens illinois glass amber beer bottle glass. This provided me the opportunity to observe a large sample amber beer bottle bases from the period. That set me on a quest to look at as many Owens-Illinois bottles as I could find mostly beer, soda, and milk to see if the pattern occurred regularly.

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, I dating owens illinois glass that Pepsi-Cola dating owens illinois glass made by Owens-Illinois followed a still different pattern in their markings as did those from The Owens-Illinois Glass Co.

The Illinois Glass Co. The company was successful and made virtually every type of bottle. ByIllinois Glass had obtained the dating owens illinois glass of three Owens Automatic Bottle Machine licenses and made many other containers from semiautomatic machines.

The firm expanded until the merger with Owens see Lockhart et al. The Owens Bottle Co. Inthe firm merged with one of its major competitors, the Illinois Glass Co. The merger between Owens Glass Co. The merger was formally approved on April 17, Paquette The newly renamed organization purchased the Illinois Pacific Coast Co.

According to Paquette Owens-Illinois purchased Brockway, Inc. There are at least three different dating owens illinois glass of marks embossed on returnable bottles by the manufacturer. These were probably not placed on the containers at the behest of the purchaser the actual bottler but reflect the needs of the glass house.

Date codes are usually one- or two-digit numerals that indicate the year the bottle was made. This idea appears to have been conceived in conjunction with machinemade bottles. At this point, I have not seen date codes embossed on any blown-inmold bottles with the possible exception of Hutchinson bottles made by the Illinois Glass Co.

They probably originated as tracking devices for returnable bottles. and bottlers alike wanted to know the number of round trips a bottle would make in typical use. Mold codes are cryptic marks embossed on the heels or bases of bottles. In some cases these codes identify the individual plants that produced bottles.

Mostly, we have little or dating owens illinois glass information about the meaning of mold codes. Thus, I have begun calling these specific types of mold codes — catalog codes. The glass group to which I dating owens illinois glass has successfully matched numerous codes found on bottles with illustrations in the Whitall Tatum and Illinois Glass Co.

In other cases, we have been able to match numerical codes on numerous identical bottles to empirically define codes by certain e. Illinois Pacific Glass Co. At the outset, the need was for standard sizes, shapes and capacities. So each of the distilleries [received] an identifying number and my proposal was that each of the dating owens illinois glass factories also be numbered.

After several weeks of study and discussion, a simple code was devised. Numbers were used to identify the month and year the bottle was manufactured and the plant in which it was made. An appropriate logotype or symbol would be added to identify the glass company which produced the bottle.

A letter from Toulouse to May Jones, published in Volume 5 of The Bottle Trailwas the first to identify at least in print the relationships between the Owens-Illinois mark and the numbers surrounding it. The markwas registered on April 1,and the company dating owens illinois glass first use on April Creswick To the left of the mark is a one- or twodigit number that identifies the plant that produced the bottle.

Toulouse provided a table on page Table 1 that identified all the Owens-Illinois plant codes. To the right of the mark is a one- or two-digit date code, and a mold code also numerals appears below the mark. Both archaeologists and collectors, however, have been perplexed that the single- digit date codes could reflect either the s or s.

For example, a date code of 2 could indicate or In some cases, other ways of dating the container such as the presence of an Color Label — a technique not perfected until could determine the decade of manufacture.

According to Toulouse, however, bottle production apparently began inso that eliminates the question of whether a single 9 would indicate or While looking at the amber beer bases from the El excavation, I dating owens illinois glass an interesting change in bottles marked with a zero 0.

Because Prohibition was not lifted untilthis meant that bottles marked with a zero were probably from However, many of the bottles had a zero followed by a period. These also had embossed stippling dating owens illinois glass the form of numerous tiny dots on the bases.

All bases marked 1. As noted by Toulouse Owens-Illinois registered the script version of the markon September 23,claiming first use on September 4, On beer bottles, the Duraglas mark was consistently used in conjunction with stippling.

The reason for stippling is not dating owens illinois glass obvious. According dating owens illinois glass the GlassPac Web page During the manufacture of a dating owens illinois glass container there is a point at which the almost red hot bottle is lowered on to a relatively cool conveyor.

Glass is a poor conductor of heat. Therefore on contact with metal, the surface of the glass will cool quickly but the mass of glass behind it will not, leaving a temperature differential in the glass setting up stresses which may cause microscopic cracks to appear that may weaken the glass.

Base stippling lifts the body of the bottle clear from the conveyors restricting the heat loss from the bottle and eliminating the possibility of stress and possible dating owens illinois glass. In a personal communication, Robert C.

If too many bottles fail QC, they know where to look. Subsequent observation revealed that the combination of one-digit numbers and periods were to be found on soda and milk bottles as well. Eventually, a pattern emerged with the following results. At some point insomeone in the Owens Illinois Glass Co.

The answer was to add a period indicating a manufacture of or later. The stippling idea appears to have evolved about the same time, and all this was conceived in conjunction with the Duraglas process. That means s bottles may have either a 0 or 0. Occasionally, these periods are difficult to see because they are concealed in the stippling, but periods are generally larger than the stippling dots. Bottles made in may contain either single-digit numerals followed by periods or doubledigit markings, such as a 4.

In several cases, the initial 4 has been added as an afterthought, frequently slightly out of alignment with the other digits associated with the logo. Occasionally, a mold engraver forgot to change the code. The initial bottle used by the Illinois Brewing Co. However, I have found few exceptions to the period rule on returnable bottles. Bythe change to double-digit date codes appears to have been completely adopted by all the plants. Even dating owens illinois glass the Owens-Illinois engravers changed the date code each year, they did not create a new baseplate each time.

On many Owens-Illinois dating owens illinois glass, it is fairly easy with minor magnification to discern tooling marks where the old date code was peened flat and a new one imprinted into the mold to appear as an embossed date. By the s, the changes are virtually impossible to detect, probably because of improved technical skills.

Peening out old marks seems to have been used pretty extensively. The back heel, however, is marked 1 followed by a blanked-out triangle. The 7 to the right of the Owens-Illinois mark is a date code for the final year the plant was opendating owens illinois glass the mold had laid in storage at seven years prior to its reuse.

To remove all doubts, the factory code 21 is for one of the two San Francisco former Illinois Pacific plants. The bottom number on the logo also requires a bit of discussion. An appropriate logotype would be added to identify the glass company which produced the bottle.

Both the Illinois Glass Co. The new company adopted a logo and began marking its bottles with the plant code left of the logo and the year code to the right immediately. I found numbers of 1, 2, 5, 7, 8, 14, 16, and 18 although the 14 was on the later style of logo — without the diamond. The 14, 16, and 18, therefore, could not be codes for the month. Toulouse was apparently correct about this one.

However, the bottom number was applied inconsistently. Although many bottles from the dating owens illinois glass s include the bottom number, a large segment of them do not. Even as late as the s, these numbers are sometimes missing. The new mark was identical to the old dating owens illinois glass except that the elongated diamond was eliminated leaving only an I in an oval.

The dating scheme, however, remained the same with the company code to the left of the mark and the date code to the right. Other combinations of letters and numbers often appeared on some part of the base, possibly identification numbers for the bottle style catalog numbersalthough they could have other dating owens illinois glass. The timing of the change is subject to a bit of controversy.

According to Toulouse Both almost certainly referred to the change that occurred in Although planning for the change had begun a year earlier, was the year that Owens-Illinois Glass Co.


Processus Owens Illinois

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Illinois Glass Co. installed an Owens machine in The following year, The Dating Game by Bill Lockhart, Bill Lindsey, David Whitten and Carol Serr.
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If you are an avid beach or sea glass collector, or glass bottle collector, this is a tutorial on how to date glass made by the Owens-Illinois company.
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Zahra Doe Morbi gravida, sem non egestas ullamcorper, tellus ante laoreet nisl, id iaculis urna eros vel turpis curabitur.

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Zahra Doejune 2, 2017
Morbi gravida, sem non egestas ullamcorper, tellus ante laoreet nisl, id iaculis urna eros vel turpis curabitur.
Zahra Doejune 2, 2017
Morbi gravida, sem non egestas ullamcorper, tellus ante laoreet nisl, id iaculis urna eros vel turpis curabitur.
Zahra Doejune 2, 2017
Morbi gravida, sem non egestas ullamcorper, tellus ante laoreet nisl, id iaculis urna eros vel turpis curabitur.

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