How many stitches are there? As I understand it, the US government has registered thousands of different stitches. These include hand stitches, utility stitches, decorative stitches, lettering stitch sets, serger stitches, and a variety of industrial stitches. The home sewing machine, however, had only a straight stitch for almost a hundred years. Modern sewing machines have between 25 and 1,000 different stitches.
There are several distinctly different types of sewing machines and each type uses slightly different systems to select and form stitches.
Mechanical sewing machines are the least expensive sewing machines and use the most primitive technologies. An AC electric motor turns a belt which turns the upper sewing machine shaft. The upper shaft transfers the mechanical energy along the shaft past the cam system to the needle system. A lever on a parabola connection transfers the mechanical movement down to the lower sewing machine shaft which may be split into a dual lower shaft one to drive the hook and a second to drive the feed dogs.
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.
Surface mounted dials, levers, and buttons known as stitch selector control the position of the cam tracker levers in relation to the cam gear. To produce the desired stitch, the cam tracker must line up precisely with the appropriate groove on the cam gear. Often this connection slips out of alignment, and requires realignment. Also it is common for plastic cam gears to split, deteriorate, or otherwise break. When this happens, it is necessary to replace the cam gear.
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.
Primarily the electronic machines add improved power control and smoother operation of the sewing machine. The hum of the mechanical sewing machines AC motor is reduced or eliminated. Electronic sewing machines offer many more stitches.
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.
To choose a stitch on a mechanical sewing machine turn a dial, move a lever, or press a button.
An electronic switch is used in electronic sewing machines to select stitches.
Select stitches on a computerized sewing machine by touching a touch screen, pressing a keypad, or pressing a button.
Learn to take advantage of all the features your sewing machine offers. Make your own stitch book for easy reference. Make sets of 5 by 7 pieces of fabric. Sew one seam across the top of the piece about an inch down. Drop down another inch and sew a new seam using a different stitch. Continue down the piece until the piece is complete. Start another piece and continue sewing all the different stitches of until you have a sample of every stitch on your sewing machine. Finally, seam the collection of pieces together into your own stitch book.
Understanding the stitches on your sewing machine and knowing how to select them and sew the on your sewing machine is a huge step forward. You may look at your stitch book and think, Wow, I didnt know my machine could do that.
There are several distinctly different types of sewing machines and each type uses slightly different systems to select and form stitches.
Mechanical sewing machines are the least expensive sewing machines and use the most primitive technologies. An AC electric motor turns a belt which turns the upper sewing machine shaft. The upper shaft transfers the mechanical energy along the shaft past the cam system to the needle system. A lever on a parabola connection transfers the mechanical movement down to the lower sewing machine shaft which may be split into a dual lower shaft one to drive the hook and a second to drive the feed dogs.
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.
Surface mounted dials, levers, and buttons known as stitch selector control the position of the cam tracker levers in relation to the cam gear. To produce the desired stitch, the cam tracker must line up precisely with the appropriate groove on the cam gear. Often this connection slips out of alignment, and requires realignment. Also it is common for plastic cam gears to split, deteriorate, or otherwise break. When this happens, it is necessary to replace the cam gear.
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.
Primarily the electronic machines add improved power control and smoother operation of the sewing machine. The hum of the mechanical sewing machines AC motor is reduced or eliminated. Electronic sewing machines offer many more stitches.
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.
To choose a stitch on a mechanical sewing machine turn a dial, move a lever, or press a button.
An electronic switch is used in electronic sewing machines to select stitches.
Select stitches on a computerized sewing machine by touching a touch screen, pressing a keypad, or pressing a button.
Learn to take advantage of all the features your sewing machine offers. Make your own stitch book for easy reference. Make sets of 5 by 7 pieces of fabric. Sew one seam across the top of the piece about an inch down. Drop down another inch and sew a new seam using a different stitch. Continue down the piece until the piece is complete. Start another piece and continue sewing all the different stitches of until you have a sample of every stitch on your sewing machine. Finally, seam the collection of pieces together into your own stitch book.
Understanding the stitches on your sewing machine and knowing how to select them and sew the on your sewing machine is a huge step forward. You may look at your stitch book and think, Wow, I didnt know my machine could do that.
About the Author:
Discovermore about repairing sewing machines from Sewing Machine Technician David Trumble. Enroll in one of his comprehensive sewing machine repair courses. Begin by downloading his free beginner's sewing machine repair course.
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