A sewing machine has many parts. Each has certain functions:
1. Balance wheel - it is turned either forward or backward to make the machine sew; it raises and lowers the needle.

2. Presser foot - it holds the fabric firmly in place for stitching.

3. Pressed foot lifter - it is used to raise and lower the presser foot; it is found at the back of the machine.

4. Feed-dog - it holds the fabric against the presser foot; it pulls the fabric along for stitching as it moves up and down; it is a tooth-like piece of metal just under the presser foot. It works up and down through the slots in the throat-plate.

5. Throat plate - provides slots or openings through which the needle projects down-ward and the feed-dog upward.

6. Spool pin - this holds the spool of the thread.

7. Thread guides - these support the thread from one part of the machine to another; they prevent the thread from twisting.

8. Needle clamp - it is an attachment for the needle.

9. Stitch regulator - it is used to shorten or lengthen the stitches or the machine.

10. Bobbin - it is used for winding the thread which goes in the lower part of the machine.

11. Bobbin case - it is the case that holds the bobbin.

12. Stop motion screw - this is loosened to disconnect the needle and stop it from moving when the machine is operated; it is at the balance wheel.

13. Tension discs - this regulated the tightness of the thread as it forms the stitch.

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