Sewing machines are incredible devices of creative ingenuity.
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.
A major advancement occurred when the human power was replaced by electrical power. Electric motors were mounted behind the sewing machine with a small pulley connected by a belt drove a larger wheel on the upper shaft. The electric power was essentially changed into mechanical power.
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.
Today there are two different types of motors used in sewing machines. One is AC and the other is DC. While the flow of electricity must always operate in a continuous loop or circuit, that loop is constantly flipping back and forth with Alternating Current. That loop continues to flow in only one continuous direction positive to negative with Direct Current. Transformers are used to convert one to the other. Electric motors come in two types AC and DC. In both cases the electricity used to run the motor must operate in a continuous unbroken circuit or loop. If the flow of electricity in the circuit flows in one direction and then in the opposite direction, it is called alternating current. If the flow is in only one direction within the loop, it is DC or direct current. Use of a transformer can convert AC to DC or the reverse.
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.
More modern sewing machines including the most advanced computerized sewing machines have introduced the use of DC motors. Electronic circuits and integrated circuits are used to convert AC electricity into DC electricity. It then uses DC motors to directly control stitch functions and machine operations. This advance has enabled the modern sewing machine to achieve convenience and stitch capabilities never dreamed of before.
Understanding the power system of your sewing machine will help you understand when it is functioning properly or improperly. If the machine is not working they way you expect, understanding will help you make adjustments and repairs.
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.
A major advancement occurred when the human power was replaced by electrical power. Electric motors were mounted behind the sewing machine with a small pulley connected by a belt drove a larger wheel on the upper shaft. The electric power was essentially changed into mechanical power.
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.
Today there are two different types of motors used in sewing machines. One is AC and the other is DC. While the flow of electricity must always operate in a continuous loop or circuit, that loop is constantly flipping back and forth with Alternating Current. That loop continues to flow in only one continuous direction positive to negative with Direct Current. Transformers are used to convert one to the other. Electric motors come in two types AC and DC. In both cases the electricity used to run the motor must operate in a continuous unbroken circuit or loop. If the flow of electricity in the circuit flows in one direction and then in the opposite direction, it is called alternating current. If the flow is in only one direction within the loop, it is DC or direct current. Use of a transformer can convert AC to DC or the reverse.
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.
More modern sewing machines including the most advanced computerized sewing machines have introduced the use of DC motors. Electronic circuits and integrated circuits are used to convert AC electricity into DC electricity. It then uses DC motors to directly control stitch functions and machine operations. This advance has enabled the modern sewing machine to achieve convenience and stitch capabilities never dreamed of before.
Understanding the power system of your sewing machine will help you understand when it is functioning properly or improperly. If the machine is not working they way you expect, understanding will help you make adjustments and repairs.
About the Author:
Get 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 writes several comprehensive sewing machine repair courses.
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