Confused about bobbins
 

I have never gotten vintage bobbin sizes straight in my mind. I know which bobbin fits my 221 and 301, and which fits my 15-91 and 503, but don't know what names they are referred to. Class 66? Class 15? Neither?
I won a goodie bag at my guild and it had a bobbin that looks like it would fit my 15-91, but is shorter. It is the bobbin in the middle of the pics. What does that fit and what is it called? I need a class on vintage bobbins....
Can anyone help me get this straight in my mind (or what is left of it...)😳
[ATTACH=CONFIG]533431[/ATTACH]
[ATTACH=CONFIG]533432[/ATTACH]

I thought Singer 15's took class 15 bobbins but the 500 & 503 took class 66? I have a 500 and I'm almost positive it takes 66's. I don't think a 15 would fit(?)

I'm not sure what that middle bobbin is though, sorry. Maybe an L?

L-R: 15, 66 (if the top has a slight convex curve, it's hard to tell from the photo; if not, see *), 301

Singer 503 takes a 66

*What do you call the bobbins for the 306/319?

I just buy the ones that my machines call for. Singer 2662 and Singer 401. I go according to what my manual and charts suggest. I have photos of anything and everything regarding my sewing machines on my cell phone and in my computer files. If it isn't broke, I don't fix it.

The middle could be an L bobbin (my Juki uses these) or a 66 bobbin, which is slightly different. They are not interchangeable in spite of being very similar. Is there a difference from top to bottom on the bobbin? The L bobbin has a small slot neat the center to slide onto the winder, while the 66 has a small hole near the center for the same purpose.

Ok, so my 15-91 takes a class 15, as shown on the left. It has a flat top. The 503 takes a class 66 which has a slightly rounded top. The bobbin on the right only fits the 221, 222 and 301. Is that correct?

The middle bobbin is still not identified for sure. But I know I don't have a machine they will fit. If anyone wants them, you can have them - there are 4 of them.

Thanks for all the comments!

The middle one could be a rotary bobbin. My repairman looked at one of mine and said that's what I have.

I agree with Pat, having flat sides it looks like an L style rotary bobbin. My Pacesetter uses these.

Cari

Yes, 15 is 15, 503 is 66, 221,222,301 take the right one and that's all.
201 takes a 66. Some of the 600s take 66 and Touch and Sew takes the screw-apart clear, plastic ones. There was a lovely chart not long ago on QB. Try searching in the archive. It had pictures. I printed it out, put it in a notebook along with downloaded sewing machine manuals for future reference. I save stuff.

I've changed my mind. I don't think the middle one is an L bobbin so don't know what it is.

Cari

The mystery bobbin appears identical to the vintage Husqvarna bobbins in my model 1030 from the early 1970s, and our Husqvarna Viking 105 from the mid-eighties. These bobbins have ONE hole on ONE side; both sides are slightly crowned, and have what appears to be a seam in the middle of the bobbins reel (I just made up that term...)

Brian

The outside diameter is 61/64ths of an inch; thickness is just a hair over 31/64ths. I'll try to post some pics of the bobbins from our Viking Husqvarna Classica 105, which my
Mom bought around 1995 (probably one of the last years Husqvarna was made in Sweden.

There have been a couple -
http://www.quiltingboard.com/vintage...t-t247896.html
http://www.quiltingboard.com/vintage...e-t239625.html

Also I was wondering if the middle one is solid on both sides. Seems like Elna bobbins look similar but has holes on one side and solid on the other.

Janey - Neat people never make the exciting discoveries I do.

it has one hole on top, solid on the bottom.

Go to superiorthreads.com. They have a wonderful chart on the different kind of bobbins, the diameter, wide, etc of each type.

The middle bobbin looks like a class 66 bobbin.

Sharon in Texas