Oh my word, I think I've found my favorite thread. LOL* I unintentionally began collecting attachments a few years ago when I purchased a Sears and Roebuck Treadle Machine at a yard sale for $25. The cabinet is fairly ornate, it has two drawers to the left, two to the right, and one in the center with a key hole. When I got it home, I discovered the drawers were jam packed with odds and ends, most of them attachments. I have had this machine two or three years and tonight was the first time I'd gone through all of the attachments! Lol* I didn't even know the key was in there, I will have to try that in the morning. I haven't a clue what all these do. I imagine the ones in the black case go to the treadle, but the others must go to another machine, I'm guessing also vintage.
What I'm wondering, is I have a Singer 301a and a 221 - would the attatchments in the brown box fit those machines?