US 7,080,605 B1Granted

Pivoting feed roller

OwnerMartin L. Andersoninventor

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Abstract

A pivoting twin roller for feeding a material to a sewing machine is disclosed. The twin rollers grip the material with serrated rollers, which rotate at the same rate for uniformly moving the material relative the sewing machine. The twin rollers press down on the material with equal force due to the central pivot point, which improves the feed of the material. The pivoting twin rollers also allow for automatic feeding of material to the sewing machine. A spring loading on the housing for the pivoting twin rollers applies downward pressure on the material being sewn for a sure grip thereon. The downward pressure also insures that the rollers will press down with equal force on uneven height materials since the pivot adjusts the height of the rollers to the height of the materials and thus prevents floating which can lead to jamming of the sewing machine.

Claims9

Dependent claims

A pivoting feed roller comprising:

a first side wall and a second side wall held in parallel by connecting material therebetween, the first side wall and the second side wall having an first aperture for engaging a first shaft with a first roller, the first side wall and the second side wall having a second aperture for engaging a second shaft with a second roller, the first side wall and the second side wall having a third aperture for engaging a pivot shaft located between the first shaft and the second shaft,
a pivot block having an aperture therethrough for pivotally engaging the pivot shaft, such that the first side wall and the second side wall pivot on the pivot shaft relative to the pivot block,
a spring loaded rod connected to the pivot block for providing a downward pressure on the first and second rollers,
a gear on the first shaft, a gear on the second shaft and a gear on the pivot shaft connected to the gear on the first shaft and to the gear on the second shaft for rotating the first and second rollers in unison at the same rate.

1 more element

Dependencies are inferred from the claim text.