To easily and surely remove slacks or wrinkles in the width direction of an fabric in a sewing machine having a constitution wherein the long-sized fabric is fed from the feeding source and fixed to an fabric frame which is drive-controlled on the sewing machine table, and when sewing to the fabric section being fixed to the fabric frame is completed, the fabric section being fixed to the fabric frame is changed to another section by relatively moving the fabric to the fabric frame, and the sewing is resumed.

This sewing machine is equipped with a roller 10 which is arranged in such a manner that the rotation axis may tilt to the relatively feeding direction of the fabric so that an outward tension may be applied in the lateral width direction to the fabric by coming into contact with the fabric when the fabric N is relatively moved to the fabric frame 5 in order to change the fabric section to be fixed to the fabric frame 5 to another fabric section. The roller 10 is arranged in such a manner that the rotation axis may tilt to the relatively feeding direction of the fabric N.