AntiqueMeds
Well-Known Member
one type of snap case ...
Best description of a pontil... contest?
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RED Matthews
Well-Known Member
Well j.dinets; Please fill us in. That is a word that hasn't made it to my glossary of glass making terms. RED Mathews
My understanding is that they were made by a pontil rodwith four narrow ends. There is a good diagram on page 29 at http://www.heritage.nsw.gov.au/doc . The reason I said they can be strange is that I dug one up in Charleston, S.C. that only had the 4 deep inividual depressions in the center with no outer scarring, and came out of a 1770 - 1800 privy. I read one source that said it was a way of taking away stress, and distortion from the outer wall of the bottle. The bottle I dug was a blackglass cylinder.
epackage
Well-Known Member
Here you go Red...
The iron pontil scar is the result of using a bare iron pontil rod with an appropriate shaped tip or head which was heated red hot and directly applied and fused to the base of the bottle to be held. There was no glass added (like the glass-tipped pontil rod) or remaining (like using the blowpipe for a pontil) on the iron tip of this type pontil rod. Like the other pontil rod types, this one was probably removed by sharply tapping the rod near the attachment point. The iron deposits which form the iron pontil mark are very small fragments or residue from the tip of the bare iron pontil rod itself. Evidence that the tip of the iron rod was patterned is sometimes seen in the mark left behind. Other iron pontil scars can show evidence of a rod with a four quadrant head, i.e. a quatrefoil, and many other shapes. These type rods were also used to form the push-up in the base of some bottles.
The iron pontil scar is the result of using a bare iron pontil rod with an appropriate shaped tip or head which was heated red hot and directly applied and fused to the base of the bottle to be held. There was no glass added (like the glass-tipped pontil rod) or remaining (like using the blowpipe for a pontil) on the iron tip of this type pontil rod. Like the other pontil rod types, this one was probably removed by sharply tapping the rod near the attachment point. The iron deposits which form the iron pontil mark are very small fragments or residue from the tip of the bare iron pontil rod itself. Evidence that the tip of the iron rod was patterned is sometimes seen in the mark left behind. Other iron pontil scars can show evidence of a rod with a four quadrant head, i.e. a quatrefoil, and many other shapes. These type rods were also used to form the push-up in the base of some bottles.
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I didn't take it in a negative sense. I just thought RATS![:'(],(or words similar to that ). I tested this link so it should work . http://www.heritage.nsw.gov.au/docs/2_EACG_pages%2021-81.pdf .I saw the quatrefoil pontil you listed, but the one I dug had 4 deep impressions next to each other with no metal residue at all, but again this was a circa 1800 privy at the latest.
RED Matthews
Well-Known Member
Wow epackage, That is the type of information that is needed in a blog on specific glass making information for people to absorb with understanding. Thanks RED M.
RED Matthews
Well-Known Member
Thanks to both of you for the information kick around. It is rewarding to my cause anyway.
RED M.
RED M.
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