What Is a Bobbin Winder?

Bobbins hold the thread for bottom stitches.

Sewing machines use both a top thread and a bottom thread to create stitches. The top thread comes from a spool of thread. The bottom thread comes from a bobbin that has been loaded with thread by a bobbin winder.

Function

A bobbin winder spins a bobbin, transferring thread from a spool onto the bobbin. The loose end of a spool of thread is attached to the bobbin. As the bobbin spins, thread winds around the bobbin.

Types

Bobbin winders are either internal or external. Internal bobbin winders are built into the machine. External bobbin winders are separate devices that are mounted close enough to the sewing machine that the revolving sewing machine belt contacts the device and spins the bobbin.

Features

In most internal bobbin winders, the needle is disengaged so that the bobbin winder spins while the needle stays in one place. External bobbin winders work passively, allowing the machine to continue sewing while a separate bobbin is wound with thread.

Considerations

Internal bobbin winders work with the size bobbin that the machine uses. External bobbin winders work with all sizes of bobbins.

References

• Darin Tennant; Owner, Indian River Canvas, Inc.; Merritt Island, Florida
• SewUSA.com: Consew 224 225 226 Threading Diagram
• SewUSA.com: Kenmore Sewing Machine Threading Diagram