I believe the single line matting machine was used to the end. Maybe someone could link the American Machinist article that I mentioned earlier. It explains the machine and the procedure and has pictures of the barrel making machines including the rib matting machine. You can get the article on books.google.com. American Machinist, Volume 39, pages in the mid 40s. Interesting reading. I mentioned it on the first page of the "Variations in Ribs" thread. Apparently, my reference to the article didn't result in anyone finding it. Maybe someone will find it with the new information I have provided.
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