These glass window panes in the door of the Cudworth House have bullseyes (or pontil marks) at the center. This mark is made when the molten glass is poured or otherwise formed into a flat pane and is often seen in old homes throughout New England.
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Very Cool. Thanks for sharing. Alden E Finnie
I love the bullseye glass. The house I grew up in had these. Lovely photo.
I guess I’ve not seen glass this old before. It’s very interesting! I imagine it’s very thick? I’ve seen old panes that are wavey and thicker at the bottom. Apparently thinner panes of older glass will, over time, settle a bit on the bottom but it’s barely noticeable.
I love bullseye glass, I am becoming one of those “they don’t make like they used to” people:) Nice picture!
Thank you! I was trying so hard to come up with a better, more coherent description of how that bullseye mark is formed – but yesterday was such a long day and I was so tired that nothing I was writing was making any sense!
Kay, it is indeed very thick.
I actually, in my research, came across an explanation of the phenomena you describe – and it turns out that the thicker part is created when the glass is being made by the glassblower, simply as a result of gravity. The savvy installer will then put that thicker part of the glass at the bottom of the pane for increased stability.
When visiting an old house, you can always tell which panes have old glass and which have new glass — even when neither is bullseye glass.