The awesome invention of the sewing machine has inspired creativity for over 150 years.
The first sewing machine was official invented when Elias Howe filed his patent in 1846. His machine required physical energy from the user to make the machine work. The user would either turn a hand crank or pump a treadle device with his or her feet. We might say it ran be human power.
The power system of the sewing machine in those days involved the use of levers, gear, belts, and wheels. The user would start the process either by hand or foot power, and the sewing machine would transfer that movement across the sewing machine to its various parts. This enabled the machine to move the needle, hook, and feed systems to generate sewing.
With the introduction of electrical power for sewing machines, a challenge emerged. How can a sewing machine convert electrical power to kinetic or mechanical energy to run the machine?
Another revolution launched when the electric motor replaced the treadle or hand crank. Sewing quickly became faster, more reliable, and easier. The electric motor could run for hours without ever growing weary. It was common for existing machines to be retrofitted for use with electric motors. Treadle and hand cranks were removed and motors connected via a belt drive. Electricity was transformed into mechanical power.
These motors convert AC (standard household Alternating Current) electricity from the home power outlet into usable kinetic energy to drive wheels, belts, gears, and levers. An AC electrical motor uses electricity to create magnetic flux between coil windings and a central core. The magnetic charges cause the center shaft of the motor to turn generating kinetic or mechanical energy. The turning shaft is connected to a gear or belt drive wheel. A belt wraps around this connection transferring the mechanical energy to the upper of the sewing machine. From this point the wheels, belts, gears, and levers transfer the energy through the sewing machine causing its parts to sew. Today many commercial sewing machines continue to use external sewing machine motors, but most home sewing machines have built in motors.
Electricity must run in a complete circuit. The flow of energy moves from positive source to negative end only when the a continuous loop is established called a circuit. When this circuit is broken by opening a switch, no electricity flows. There are two basic types of electricity " AC and DC. AC or Alternating Current is electricity that runs in one direction for a moment and then back the other direction alternating repeatedly. DC or Direct Current electricity flows in only one direction and continues to run in that direction endlessly until the circuit is interrupted. Conversion from one to the other can be made using a transformer.
Early electric sewing machine motors were based on AC or Alternating Current electricity. These machines were essentially mechanical sewing machines using the levers and gears to move and form the stitches. Today many commercial sewing machines and low end sewing machines are still mechanical machines driven by electric AC motors. One of the hallmark features of a mechanical sewing machine is the buzz or whine the motor makes before it builds up sufficient force to move the sewing machine parts.
In recent years, another revolution has begun. The introduction of integrated computer circuits and other electronics have brought huge improvements in the reliability and smoothness of operations. Another advancement has been the introduction of DC pulse motors to control the sewing machine and produce stitches. The result has been amazing. These modern sewing machines make sewing so much easier and enjoyable.
The power system of your sewing machine really does matter. It matters if you are looking to buy a new machine. It matters when you understand what you are using. It matters if your are repairing sewing machines.
The first sewing machine was official invented when Elias Howe filed his patent in 1846. His machine required physical energy from the user to make the machine work. The user would either turn a hand crank or pump a treadle device with his or her feet. We might say it ran be human power.
The power system of the sewing machine in those days involved the use of levers, gear, belts, and wheels. The user would start the process either by hand or foot power, and the sewing machine would transfer that movement across the sewing machine to its various parts. This enabled the machine to move the needle, hook, and feed systems to generate sewing.
With the introduction of electrical power for sewing machines, a challenge emerged. How can a sewing machine convert electrical power to kinetic or mechanical energy to run the machine?
Another revolution launched when the electric motor replaced the treadle or hand crank. Sewing quickly became faster, more reliable, and easier. The electric motor could run for hours without ever growing weary. It was common for existing machines to be retrofitted for use with electric motors. Treadle and hand cranks were removed and motors connected via a belt drive. Electricity was transformed into mechanical power.
These motors convert AC (standard household Alternating Current) electricity from the home power outlet into usable kinetic energy to drive wheels, belts, gears, and levers. An AC electrical motor uses electricity to create magnetic flux between coil windings and a central core. The magnetic charges cause the center shaft of the motor to turn generating kinetic or mechanical energy. The turning shaft is connected to a gear or belt drive wheel. A belt wraps around this connection transferring the mechanical energy to the upper of the sewing machine. From this point the wheels, belts, gears, and levers transfer the energy through the sewing machine causing its parts to sew. Today many commercial sewing machines continue to use external sewing machine motors, but most home sewing machines have built in motors.
Electricity must run in a complete circuit. The flow of energy moves from positive source to negative end only when the a continuous loop is established called a circuit. When this circuit is broken by opening a switch, no electricity flows. There are two basic types of electricity " AC and DC. AC or Alternating Current is electricity that runs in one direction for a moment and then back the other direction alternating repeatedly. DC or Direct Current electricity flows in only one direction and continues to run in that direction endlessly until the circuit is interrupted. Conversion from one to the other can be made using a transformer.
Early electric sewing machine motors were based on AC or Alternating Current electricity. These machines were essentially mechanical sewing machines using the levers and gears to move and form the stitches. Today many commercial sewing machines and low end sewing machines are still mechanical machines driven by electric AC motors. One of the hallmark features of a mechanical sewing machine is the buzz or whine the motor makes before it builds up sufficient force to move the sewing machine parts.
In recent years, another revolution has begun. The introduction of integrated computer circuits and other electronics have brought huge improvements in the reliability and smoothness of operations. Another advancement has been the introduction of DC pulse motors to control the sewing machine and produce stitches. The result has been amazing. These modern sewing machines make sewing so much easier and enjoyable.
The power system of your sewing machine really does matter. It matters if you are looking to buy a new machine. It matters when you understand what you are using. It matters if your are repairing sewing machines.
About the Author:
Find your free beginner's course: 7 Steps To Peak Performance For Your Sewing Machine. Now explore the Secrets Of Sewing Machine Repair. Dr. David Trumble authors several comprehensive sewing machine repair courses.
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