new bobbin on old sewing machine

I have two old sewing machines - a 1947 Singer 66 and a 1957 Singer 15-125. I just got some new metal bobbins for them- they seem to fit the cases, but they do not fit the bobbin winding spindles. I was told that bobbin sizes are standard and will fit my machines, but they don't fit the spindles and I cannot wind them. They look a little different than my original bobbins.

 

Bobbins come in many different sizes. You need to find ones that will fit your machine.

 

The ones I got were the proper size designations according to the charts (the clerk at the store looked up the designations for me, and since then I've checked online and confirmed it). The bobbins seem to fit the cases well enough, but they do not fit on the spindles to wind them - the holes aren't wide enough for the winding spindles.

I don't know whether to return them to the store or try to widen the holes out a little. If I return them to the store, I won't be able to get the "right" ones in exchange, because all the designation tables say that the ones I got are the "right" ones.

My guess is that the spindles are thicker on the older machines and these standard bobbins are made to fit the casings and thread properly, but without much regard for the winding spindle sizes on the older machines.

I just thought I'd ask the question to see if anyone out there has an answer.

 

Yes, standard bobbins for new machines, will not fit the old machines (if that's what you bought).

I usually find parts to my old machines on Ebay. Do a search for your models and pics of the bobbins will come up so you can compare to your originals.

Also, this site sells parts for old machines, but I've never bought from them: Sewing Parts Online

 

Going to add, it would be hard to find parts at a store, for a really old machine. You'll actually find originals on Ebay some of the time. That's what I would buy.

 

Thank you !!! Guess it might be best to return the ones I bought and start looking on the internet (like Ebay) for some old ones. I have a couple original bobbins for each machine, so I can (and do) already sew with them. I just wanted the luxury of having more bobbins.

Thanks again - you are very helpful.