Original owner. From a slant needle machine.
Singer Featherweight 221 222K Shirring Plate – The Singer Featherweight Shop
Picked up a Craigslist special, not sure on these extra parts : r/vintagesewing
Singer Classes 24, 25, & 26 Sewing Machines
Singer Heavy Duty 5511 sewing machine - Moore's Sewing
The SINGER Ruffler Attachment is used to create perfectly spaced pleats and gathers. It makes uniform pleats at set intervals and can tuck every twelfth stitch, sixth stitch, every stitch or not at all! The SINGER ruffler attachment works best with light to medium weight fabrics. Move the ruffle regulator to determine the frequency of tucks (it can tuck every twelfth stitch, sixth stitch, every stitch or not at all).
Singer Ruffler Attachment Presser Foot for Low-Shank Sewing Machines, Silver
Original Slant Needle Ruffler - Singer Part # 160629 – Central Michigan Sewing Supplies Inc.
Singer Featherweight 221 & 222 Schoolhouse – Tagged attachments– The Singer Featherweight Shop
Singer 15 91 Attachments
Tupelo Creative: Thrifted puzzle solved - Greist attachments!
SINGER Ruffler Attachment Presser Foot, Perfectly Spaced Pleats/Gathers, Easily Adjust Closeness & Depth, Light to Medium Fabrics - Sewing Made Easy, Silver
OldSewinGear News Reviews & How To's - OldSewinGear