Surfergirl

I recently purchased a Singer 128 with a vibrating shuttle, which is the first machine I've owned with this type of bobbin winder. While trying to wind the bobbin, the thread guide begins to move, but only moves so far and then it stops because the bobbin winder tire becomes tight and won't move. I loosen the screw so the bobbin winding tire will move and the same thing happens. I hope I've explained this well enough for you all to understand what the problem is. If anyone has any advice on what I can do to adjust this, please respond. Thank you.

greywuuf

I can try to get a picture, or video of mine in action tonight so that you can see how it is supposed to work and move. if the actual "tire" is binding up though... it sounds like you need some oil and degunking.

Surfergirl

The bobbin winding tire moves freely until the bobbin begins winding, it then stops. When we check the tire, it is really tight. We loosen the screw and the tire moves freely again, but the same thing happens when we begin winding the bobbin again.

Candace

Do you have it threaded to the bobbin correctly?

greywuuf

not sure what screw you are loosening ..... there is nothing I can think of that would regulate how freely the bobbin winder would spin.

jljack

I am puzzled by this, too. Thinking of the mechanics of how the bobbin winds, I don't see in my mind's eye how the tire can get tighter.

Surfergirl

On the front of the bobbin winder mechanism, there is a round part with small "teeth" around the outer edge...on the front of this is a heart shaped piece of metal...on this is a large screw and a small one. When we attempt to wind the bobbin, this large screw tightens up (on its own) and the bobbin winder stops turning...we have to loosen this screw again in order to get the bobbin winder to turn freely. I know it sounds crazy, but this is what is happening.

Tartan

I don't know if I have a similar machine but mine has the long bobbins and heart shaped piece like you've described. To fill a bobbin on mine...place spool of thread on machine...go through the first thread guide...I go once around the tension disc backwards so that the thread end is in the right position to go to the bobbin winder. I place the bobbin in the bobbin holder. I run the thread under the little wire and through the 2 thread guides and I put the end behind the one end of the long bobbin. I then loosen the silver knob in the middle of the wheel (towards me) this keeps the needle from going up and down as you wind the bobbin. I then tip the bobbin rubber wheel towards the machine until just touching. If you push it over too tight it makes it hard to treadle. After all that..... is it the screw in the middle of the heart shaped disc or the screw on the bobbin thread guide that tightens? I've never had to touch either of those on mine. There is also a large knob right below the bobbin winder on mine. That knob is for shortening and lengthening your stitch length and should not effect filling the bobbin.

greywuuf

Ahhhh, no that makes sense. That large screw is the axle that the cam turns on and if it got tight then it would lock up things. Two things are going on...the cam should turn freely so as not to tighten the screw, and the screw (I think) should have a nut on the back side so it is "locked" in adjustment...(either that or it should have a shoulder on it so that it can't get to tight.

I did not take the winder assembly that far apart img mine. I can check tonight and see if I cam help you out somehow.

Surfergirl

greywuuf,

This is exactly what the problem is. My husband said it must have something to do with the nut on the back side of this screw. When we loosen this screw so the bobbin winder will turn, it tightens up again when we begin winding the bobbin. I hope we can get this figured out and get it working.