Importance

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Abstract

A fabric feed mechanism that includes a forward feed roller located forward of the stitch forming area and a rear feed roller located to the rear of the stitch forming area. The drive to the forward and rear feed rollers is synchronized such that the fabric is fed to the stitch forming instruments in a relaxed and unstretched condition. There is a independently applied downward pressure to forward and rear feed rollers and the forward feed roller is raised along with the presser foot. The front feed roller has sections that are located on opposite sides of the presser foot toe to thus ensure that the top layer of fabric is fed under the presser foot rather than riding up the front roller. A material folding device is located forward of the stitch forming area for folding material to be fed to the stitch forming area. An adjustable edge guide member is mounted on the bracket for the forward feed roller such that the edge guide is adjacent to the forward feed roller when the forward feed roller is operative and swings forward toward the material folding device when the forward feed roller is raised where it functions as an edge guide for the material as it is being loaded into the folder and under the front feed roller. A differential feed mechanism is provided below the front roller which can be adjusted to vary the forward feed velocity of the lower ply of material relative to the upper ply which allow the machine operator to align the cross seams such that they match and control the top and bottom ply such that they come out even.

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First Claim