How to Date Owens-Illinois Glass

Duraglas jar dating

Video dating bottles, bottle was the many owens-illinois glass containers glass inserts for mason spelled incorrectly. Therefore the piece of glass I found was manufactured using this process somewhere in that time frame. This is done to allow the user to get more information or clarification as they proceed through the key. Grouping of the left is a ring or name dating bottles. Another exception example is that the bottles for expensive, low production liquors e.

All turn-mold bottles are round in cross section and unless stained, will usually have a polished looking sheen to the glass surface. Also, the format and space constraints of a journal article do not allow for the elaboration and illustrations necessary to make a key function fully Jones b. Most free-blown bottle date prior to and can be much older.

Also the format and

This was almost universal with many beverage bottle types e. There is no exact year in which production of the symbol stopped, as various plants ended use of the mark at different years. Though this process is still in use today, the word Duraglas was embossed on bottles only between and the mids Lindsey, B. Base codes on Owens-Illinois amber glass handled jug, or date code, made at factory B was jug style number.

You can guess fromThe best the following key

Duraglas milk bottle dating

Fire Polishing - Occasionally encountered machine-made bottles may have fire polished finish rims - a process which eradicated evidence of the neck-ring mold seam on the rim of the bottle. Time has taken its toll on records, of course, but much of what happened in the past was simply not documented well or at all as with most endeavors of common people in the past.

They axed the diamond, and instead were left with a simple I inside of an O see pictures to the right and below. It also has no neck ring mold seam immediately below the finish like found on most Owens machine produced bottles or on the majority of all machine-made bottles. Enter each of duraglass date. All this adds to the fascination with bottle making, but makes systematic dating similar to solving Rubik's cube - ostensibly simple on the surface but complex in practice.

No material may be copied for commercial purposes. The link below allows a user to view an amazing short movie clip that shows two different early Owens Automatic Bottle Machines in operation.

However, without having more of the glass, I am unable to narrow that down to a specific year. Coca-Cola and Pepsi-Cola didn't always adhere to the Owens-Illinois policies, and often had their dates on the heel, and not the bottom, of the glass. The number on the right is our year code and what we are most interested in. Produced during the era where all bottles were an relatively rare and cherished commodity to be discarded only when broken i. Just got duraglas milk bottle dating to read this thread from the beginning.

Fire Polishing  Occasionally encountered

The best the following key can do is get a user to a reliably close dating range estimate. You can guess from the title of machine what it did.

All turnmold bottles are round inTime has taken its

For brevity, most of the specific references are not noted in the key's narratives. About Stacy Fowler duraglas milk bottle dating Stoneware mug age unknown.

My sources are listed below, feel free to check them out yourself for more information on the subject. This bottle is probably free-blown or dip molded. Ralph kipp's milk bottle-flynn gold ribbon.

Exhibit B is another story all together. Shape is more indicative of function - i. Turn-mold bottle body showing faint concentric rings. The closer to the top of the bottle the seams extend, the more recent was the production of the bottle. Newman's key made a noble attempt at simplifying bottle dating, but is weakened by the fact that the subject is much too complex to be conducive to such a simple approach by itself.