Dating english glass bottles
Good thread, and good informative photos Poacher. A pdf copy of Newman's article is available now courtesy of the SHA by clicking on this link: Chart 1 The Basics of Dating Bottles Readers first need to develop the vocabulary necessary to distinguish early and late forms of bottles.
This bottle dating "key" is a relatively simple "first cut" on the dating of a bottle. As above, click on the image to view a larger and much more readable version with the various features pointed out. But any technique, once developed, can be used right up to the present - as many collectors know who have been so unfortunate as to rely too heavily on a popular termination date as sure evidence of true antiquity This website is designed to have the informational depth, pictures, and illustrations necessary to solve the problems of the Newman key though his warning still holds though hopefully less so.
N otes on embossing, labeling, and existing research Raised embossing and when present, paper manther dating on a bottle can frequently provide important details to refine the probable manufacturing date range if information exists for the company that either manufactured the bottle i. Are there any more simple facts?
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 dating english glass bottles in practice. Does anyone have a list of basic things to look for to date a bottle? Painter seam stops below lip common on sodas and beers image supplied by Harry Pristis s machine made crown top seam runs to top of bottle common on sodas and beers - Preset machine made metal cap top seam runs to top used a metal cap with twisted wire seal common on medicines s - s.
Cheers As poacher says it an accumulation of knowledge learnt over the years.
One can find quite a bit of information on my web site and across the Internet about dating bottles based on whether the mold seam goes up and over the lip or if the bottle has a 'pontil' on the base.
Painter seam stops below lip common on sodas and beers image supplied by Harry Pristis. Utilitarian items makes up the bulk of the bottles produced during the 19th century and first half of the 20th century.
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Fortunately by the 's, or around the dating english glass bottles of the American Civil War, glass technology had progressed enough to allow manufactures to make extensive use of molds. This bottle is probably free-blown or dip molded. This is a "machine-made" bottle or jar and will also usually have a highly diagnostic horizontal mold seam just below the finish that circles the neck.
However, there is a basic code to dating bottles and the first thing to know is about bottle construction.
BOTTLE MOLDS AND SEAM DATING:
To the authors knowledge, the first and only serious attempt at using a key to date American bottles was done in a Historical Archaeology journal article entitled A Dating Key For Post-Eighteenth Century Bottles by T. If your bottle has a ground rim or lip, more information can be found at the following link: Even given these descriptions beginning often mistake a machine made Owen ring on the base of a bottle with a pontil. With each chart the reader will find accompanying pictures to further aid in bottle identification and age.
While it is always possible that some manufactures could have kept and used some of their old molds well past their technical life, for the most part, they dating english glass bottles jumping over themselves, trying to obtain the latest and most economical means of production. Both these ink bottles also exhibit no sign of the concentric, horizontal finishing tool induced marks that would be present on a mouth-blown finish.
Latest Posts Popular Topics. This greatly simplified the process of bottle making, as well as the amount of time it took to manufacture each one. The following charts and pictures on the dating bottles pages listed below should help. The best the following key can do is get a user to a reliably close dating range estimate.
DETERMINING THE AGE OF OLD BOTTLES
This page also shows how other portions of this website can provide information pertinent to the bottle in question. This will be noted where known. Forum Members Last Active: See the About This Site page for more information about the author and contributors. There is also no neck ring mold seam immediately below the finish like found on most Owens machine produced bottles and on a majority of all machine-made bottles.
Talking of which, look at these lips on similar beer bottles. Click canning jar to view the typology page section devoted to that category.
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