Knee Lift The Knee Lift provides the same lift action as the Presser Bar Lever, but using the side motion of the operator's right knee (Photo 5). This is handy when having to move or rotate the material with the needle is down to raise the presser foot and pivot the material and doing so rapidly. It may seem awkward at first, but once accustomed to its operation, the value of the knee lift will become clear.
Photo 5 The knee lift is a lever actuated mechanism that raises the presser and needle foot, but not the needle itself. Just as the name implies, the operator's right knee is pushed sideways to raise the presser foot. There are parts of sewing a stitch that requires the needle to be all the way down (thus anchoring the material) and pivoting it around. The knee lift allows the operator to take pressure off the material while using both hands to hold onto the material and making the pivot.
Hand Wheel This is an approximately eight inch diameter wheel on the right side that the operator can rotate to move the needle and/or raise the presser foot into position (Photo 6). The Hand Wheel also connects to the drive belt to the motor underneath the table. Only rotate the Hand Wheel forward, never try to turn it backward.
Photo 6 Shown are the Hand Wheel and Bobbin Winder parts of the machine. A drive belt from the motor loops over the wheel to operate the machine, but can also be rotated by hand for beginning a stitch or when turning a corner. Having the position of the treadle in the middle (neither clutch or brake is engaged) is required to operate the hand wheel. Rotate the hand wheel in the forward direction, never try to turn it backwards.
Bobbin Winder The Bobbin Winder is the attachment with the wheel and shaft on the right side of the machine (Photo 7). The Bobbin Winder includes a thread tension adjustment at the back. Thread is pulled up from the cone, over the loop and down through the hole on the winder through the tension disks (Photo 8) and onto the bobbin. This provides constant tension to the thread as its wound onto the bobbin. The winder, when adjusted properly, flips down so that the wheel touches the drive belt and spins the winder. The winder also includes a thin metal strip (like a finger) (Photo 9) just above the bobbin that senses when the bobbin becomes fully wound. It will then automatically flip the winder up away from the drive belt (Photo 10). Wrap the thread onto the Bobbin several times by hand before slipping onto the Bobbin Winder shaft. Eliminate any excess slack before running the machine. When winding a bobbin, never run the machine with thread and always with the Presser Lever up to lift the Presser and Needle Feet. Since this takes some time, wind several Bobbins in advance with the color(s) for your project.
Photo 7 Mounted to the table and next to the drive belt is the bobbin winder shown with winder wheel (larger diameter wheel) touching the belt. The bobbin is slipped on the winder shaft.
Photo 8 Close up view of the bobbin winder tension disks. The thread is routed from the cone (located above the machine), through the hole on the bracket, in between the disks and back to the bobbin. Turning the thumb screw in puts more pressure on the disks and thus increases the tension of the thread as its wound onto the bobbin.
Photo 9 Since the bobbin winder's wheel is snapped into place against the drive belt, when the machine is engaged, it will wind the thread onto the bobbin. The little metal finger is positioned in the bobbin so that it that will sense when the bobbin gets full.
Photo 10 Shown is what happens when the bobbin is fully wound, it will snap the winder off the drive belt and stop. Since the bobbin winder is used when the presser foot is in the up position, it is advised the wind several bobbins of the each color thread required for your project.