Bottle maker repair or type of manufacture?

[Dug]

I was sorting through some of my smaller bottles and this small aqua colored Dr. Tichenor's caught my eye. Not sure why I did not notice it before, but it appears that a plate of glass has been added to the bottom of the bottle. As you can see in the pics there is a distinct seam all around the bottle with the exception of one point in the center where it almost looks like a weld spot.

Is this a repair or just a type of manufacture that I have not learned about yet?

 

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[epackage]

Not a repair, just a flap of molten glass that got pinched in the mold and folded over and then cooled when it was removed from the mold...

 

[4x4x4]

....Sure does look like "repair"/addition though.

 

[epackage]

....Sure does look like "repair"/addition though.

Wouldn't be worth the time to repair a paper label med bottle, not to mention it's machine made so it ended up like that on the conveyor belt...

 

[sandchip]

Machine made bottles are blown in two molds, the first being sort of a "preform" mold which sorta mimics the earlier glassblowers rolling the gather on the marver, giving a little puff, and rolling again in an attempt to make the parison uniform in shape and wall thickness before inserting it into the full size mold. The lines on your bottle are probably remnants of those made by the first mold, although they sure are unusually prominent in this case, possibly due to temperature issues of the glass and/or the molds.

 

[Tpmetal]

guys i do this type of stuff for a living... glass blowing and working on the equipment that is. So you all have lots of good ideas but Epackage nailed it. Was pushed into the mould too hard and folded the glass. it probably got stretched a bit much as was put into the mould and the gaffer just squished it down to make it fit.

 

[bill_wabo]

I have a few that look like yours, epackage is on the bullseye.

 

[sandchip]

guys i do this type of stuff for a living... glass blowing and working on the equipment that is. So you all have lots of good ideas but Epackage nailed it. Was pushed into the mould too hard and folded the glass. it probably got stretched a bit much as was put into the mould and the gaffer just squished it down to make it fit.

The only problem is that this bottle was blown in an ABM, not by hand. There was no gaffer involved.

 

[NJKLAGT]

My guess is that, going from parison mould to final mould, the glass is still molten and slowly changing shape, and the chances of the final mould closing perfectly around the formed bottle aren't that high, and so you'll get some flapping and overlapping, kind of like a square being pushed through a round hole, or vice versa - the glass isn't quite a liquid or solid, and so it retains those impressions left from the imperfect fit. It doesn't just go away like it would with water.