You need to check a bobbin for proper tension on the thread. Which if incorrect the sewing machine will often not sew properly.
You will need a 66 k bobbin
Depends on the machine brand. To determine which way to load the bobbin into the bobbin case you need to determine which way the slot is facing that the tread slides into prior to it slipping under the tension clip. Hold the bobbin case with the opening away from you with the slot facing up. If the slot on the bobbin case is facing to the left put the bobbin into the case with the thread spinning the bobbin counter clockwise. If the slot on the bobbin case faces to the right put the bobbin into the case with the thread spinning the bobbin clockwise.
Check and see if the bobbin thread is wound/jamming the feeder, if so carefully remove the bobbin & the thread. Clean out any loose thread bits and any thread/fabric dust. If this doesn't work try cleaning and oiling your sewing machine. Once you have done these things rethread your sewing machine, check the bobbin to make sure the thread is on correct (if it is too loose or not on smoothly you may need to reload your bobbin), replace the bobbin in the holder and test on scrap fabric that you are sewing so as to set the tenion of the thread. Always refer to your sewing machines mannal also.
Adjust the bobbin screw. Also, check if it is broken.
I'm assuming you're talking about winding a bobbin on a sewing machine? If so, there is a post similar to the one for thread (near it) that you put the empty bobbin on. Then you put your spool of thread where it goes on the machine. You wind your thread from the spool of thread to the bobbin (there's usually a little chart on your machine, but if not, the thread goes through a hook or two and then you wind it about 4 times around the bobbin (clockwise). In newer machines you then push the bobbin toward a holder type thing that is near it. This disengages the needle from going up and down and lets the machine wind the thread as you push the pedal. On older machines, you have to turn the handle of the machine toward you and it disengages the needle, allowing the bobbin to be filled when you press the pedal. Hope this helps! You could probably google your sewing machine name and how to thread a bobbin and maybe get a diagram.
I'm not exactly sure what you are asking, but if it is "WHAT IS a sewing machine bobbin?" then I can help. The sewing machine bobbin is the round "wheel" like part that holds the thread under the sewing needle. In the older machines it was metal, and in the newer machines it is mainly plastic. Mostly, these bobbins are not interchangeable from one machine to the next. Each sewing machine brand requires its' own specific bobbin. Without the bobbin (with thread on it!) a machine is unable to sew.
Bobbin should Bobbin Could Bobbin would Bobbin wood Dobbin (a name for a plow horse) mobbing robbing sobbing good
place spool of thread on spool pin
to keep the bobbin in place
Betsy Bobbin was created in 1913.
Remove the bobbin cover plate or open the door( I don't know if its a top loading drop in bobbin or a side or front loading with a removable bobbin case and watch the hook when you turn the handwheel. If it moves about half way in the circle and then stops and goes back the other way, its an oscillating hook. If it makes a complete rotation, it's a rotary hook. You may need to remove the bobbin(if it's a drop in bobbin) or removable bobbin case if it's loads from the front or side) to see this clearly.
probably golden eagle or one of the Bobbin's : bobbin Brooke, bobbin mill, an so on...