Connected wooden folding chairs

[barncat]

We have two sets of 3 antique folding wooden chairs from the '40's? that are connected to one another.  I am not sure the best way to describe these to people.  I looked on Ebay and saw some single chairs that appear similar called ACME but I don't see any lables on mine.  I am curious what they were used for.  Thanks!

[Tim]

I think I answered this but it must have gone past Pluto or the new planets. Describe them as you have stated here. 3 connected folding wood chairs, circa 1940. These could have come from a ships deck, theatre, fraternal lodge, church, stadium, etc.
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best.........Tim