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An overlock sewing machine differs from a lockstitch sewing machine in that it uses loopers fed by multiple thread cones rather than a bobbin. Loopers serve to create thread loops that pass from the needle thread to the edges of the fabric so that the edges of the fabric are contained within the seam.
Slip stitch – form of blind stitch for fastening two pieces of fabric together from the right side without the thread showing; Stoating – used to join two pieces of woven material, such that the resulting stitches are not visible from the right side of the cloth; Straight stitch – the basic stitch in hand-sewing and embroidery
The hook mechanism carries the upper thread entirely around the bobbin case so that it has made one wrap of the bobbin thread. Then the take-up arm pulls the excess upper thread (from the bobbin area) back to the top, forming the lockstitch. Then the feed dogs pull the material along one stitch length, and the cycle repeats.
Overlock, also known as "serging" or "serger stitch", can be formed with two to four threads, one or two needles, and one or two loopers. Overlock sewing machines are usually equipped with knives that trim or create the edge immediately in front of the stitch formation.
Both the upper and lower thread are pulled long and placed in front of the sewing machine. Then zigzagging is carefully sewn over the two threads without catching the threads in the process. Finally, the upper and lower threads are pulled to gather the fabric. [4] [5] This photo shows a quick and easy method of machine gathering.
Chain stitch, made with one thread; Lockstitch, made with two threads; Overlock, made with one to five threads; Coverstitch, made with two or four threads (a twine) More advanced machine stitches mimic traditional hand stitches using variations on the basic stitches. [2] Many of these stitches though found centuries ago, are still used today.
The Merrow Sewing Machine Company, best known for inventing the overlock sewing machine, is a manufacturer of sewing machines.After the explosion of his gunpowder mill in 1837, in 1838 J.M. Merrow built a knitting mill on the same site.
Designed with an extra strong shaft and with a tapered point to penetrate multiple layers of woven fabrics without breaking and without shredding either the thread or the fabric being sewn. Serger/ Industrial: These needles can only be used in serger and overlocking machines. Microtex/ Sharps: More slender and sharper than the universal needle.