These essential components transfer power from the motor to the handwheel and needle mechanism, enabling the rhythmic motion crucial for stitching. They come in various materials, including rubber, polyurethane, and leather, each offering specific properties like durability, flexibility, and grip. A typical domestic machine utilizes a single band connecting the motor and handwheel, while industrial models might employ multiple bands for more complex operations.
Efficient power transmission is paramount for consistent stitch quality and machine longevity. Properly functioning transmission systems minimize vibrations and ensure smooth operation, preventing skipped stitches and premature wear on machine components. Historically, leather straps served this purpose, later giving way to more durable and less maintenance-intensive materials like rubber and synthetic polymers. This evolution reflects the broader technological advancements in materials science and the ongoing pursuit of improved performance and reliability.