Sewing Machines with Drop Feed Dogs

Sewing machine feed dogs are lines of teeth located under the needle plate that feed fabric consistently when sewing. When darning or free motioning, feeding of fabric is not required, so the teeth are disengaged by either a switch on the back, side or front of a machine, which drops the feed dogs under the needle plate out of the way. When regular sewing is needed, the switch is moved in the opposite direction for the teeth to pop back up.