Yes, those zippers were unique and really did need a special foot for them. A lot of the snap on feet sets now have a metal one, but the plastic ones work fine. It was neat that they had the adapters for the different machines. I reviewed the other ones I have. The Talon one came with a short shank, high shank adapters, but not a top clamp one which they call front mount. For the slant shank you could slide the bottom piece on a narrow regular zipper foot. Both the Unique and the Coats and Clarks have a single piece for both the high shank and slant shank - just had to put them on differently.
I found the patent for the holder for the needles at
http://patentimages.storage.googleap.../US3500998.pdf
Janey - Neat people never make the exciting discoveries I do.
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