Way cool. Neat attachment. Now you will have to show all the fancy things it can do. I have been wanting to play with some of these old attachments. I'm thinking it is similar to the Singer "slant-o-matic" attachment. I don't have one, but have read about it. I also recently came across a pdf for the Dooley when searching for tips on using the hemstitcher and fagoter.
It looks like the ruffler might be the five-stitch one similar to the ones that came with Puzzle boxes. Does it have the little wheel to adjust the ruffles?
Janey - Neat people never make the exciting discoveries I do.