Importance

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Abstract

The present invention relates to automatically controlling the tension of thread sewn while operating a sewing machine The system for controlling the tension of thread being used includes a wheel or other gripping mechanism that is in mechanical communication with a motor. When voltage and/or current is provided to the motor via electronic circuitry, the motor “pulls” on the thread with the desired force in a direction opposite to how the thread normally flows. The voltage and/or current delivered to the motor may be adjusted by a user. When the motor pulls on a thread to provide tension, the tension may be maintained independently of the sliding friction of the thread. As such, the tension is very accurate and repeatable, and provides for a tension that cannot be achieved with currently existing sewing machines.

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First Claim