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Home Home and Family Family How Sewing Machines Work
How Sewing Machines Work PDF Print E-mail
Written by David Trumble   
How many stitches does a modern sewing machine have? For the first hundred years, the sewing machines only had straight stitches. Today, sewing machines are very different. Today there are whole sets of stitches including, decorative stitches, alphabetic lettering, utility stitches, and over casting stitches. Today sewing machines boast twenty to a thousand different stitches. Most machines enable variations of length and width.
by DavidTrumble


How many stitches does a modern sewing machine have? For the first hundred years, the sewing machines only had straight stitches. Today, sewing machines are very different. Today there are whole sets of stitches including, decorative stitches, alphabetic lettering, utility stitches, and over casting stitches. Today sewing machines boast twenty to a thousand different stitches. Most machines enable variations of length and width.

How many different types of sewing machines are there? It can be a challenge to understand all the subtle differences and all the major differences. Stitches vary not only in number, purpose, and design; they are made in different ways.

The least expensive modern sewing machine is described as a mechanical sewing machine. These machines depend on an AC electric motor to drive shafts, gears, levers, and belts. Across the top, a series of mechanical devices the needlebar. Across the bottom, another shaft drives the hook and feed systems.

Mechanical implies levers and gears working together. When you examine the insides of a mechanical sewing machine, you see a large gear with strange ridges and valleys around it. Then you see levers that rub against or run along the edge of this large gear. This motion conveys this motion to the needle bar enabling the bar to create a variety of stitches.

Cam tracker alignment are adjusted by surface mounted dials, buttons, or levers. The position of the cam tracker lever determines the stitch produced. The position of the stitch selector lines up the tracker to form the selected stitch. If it gets out of line, it will fail to produce the desired stitch. To fix this, adjust the stitch selector connection on the cam tracker and align it with the proper groove on the cam gear. Also look closely to make sure the cam gear has not cracked or broken.

Electronic sewing machines use electronics to control the power drive system and the stitch selection system. Note many machines are blends of mechanicals and electronic technologies, and others are blends of electronics and computer technologies. Fully electronic sewing machines use electronic circuits to manage motor output giving the sewing machine greater torque, increased consistency, and smoother sewing.

Stitches are selected with electronic buttons that control the production of stitches. Electronic sewing machines usually offer more different stitches and more dependable sewing.

The modern sewing machine like most other modern devices has been transformed by computerized technologies. The pre-programmed stitches and capabilities of the computerized sewing machine produces amazing results. It sews smoother. It sews easier. It sews with far greater potential. The computerized machine uses quiet DC pulse motors, stitch selection, and loads of convenience features.

Mechanical sewing machines use buttons, dials, and levers to select stitches.

On an electronic sewing machine, press a button attached to an electronic switch.

On a computerized sewing machine, press a button on the computer keypad or touch the selection on a computerize touch screen.

You can get a handle on your stitches with this little exercise. Make your own stitch selection reference book. Cut as many 5 by 7 pieces of plain fabric as you may need. Select one stitch at a time, and sew one seam across the piece of fabric. Sew similar stitches (utility, decorative, etc.) on each piece but spread out for neat appearance. Repeat the process for every stitch on your sewing machine. If you only have a few stitches, try sewing a variety of lengths and widths. This is an inexpensive and practical way to really get a handle on all your stitches.

Grasp the full potential of your sewing machine. Learn every stitch on your machine. Master the selection, settings, and use of each stitch. Then you will have real confidence sewing with your sewing machine.

About The Author:

Discovermore about repairing sewing machines from Dr. David Trumble. Get one of his comprehensive sewing machine repair courses. Start by getting his free beginner's sewing machine repair course.

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