Multilayer workpiece guiding device for sewing machines
AssigneeRockwell-Rimoldi S.p.A.
InventorsLuigi Avesani, Roberto Sanvito
Life of this patent
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Abstract
A device for simultaneously guiding at least two layers of fabric to the stitching instrumentalities of a sewing machine in which a portion of one layer has a greater width than that of the other. The device includes superposed passages with a limiting element within each passage for separately engaging and guiding the edges of the layers of fabric. One of the limiting elements is fixedly held within its respective passage and the other is movable. The movable limiting element serves to align that portion of the layer of wider width with the edge of the adjacent layer prior to joining the layers by an assembly seam.
Claims7
An improved workpiece guiding device for independently guiding separate layers of fabric to be joined by seaming to the stitching instrumentalities of a sewing machine in which a portion of one of the layers of fabric has a greater width than that of the other, said guiding device comprising:
- (a) superposed passages for independently and simultaneously guiding separate layers of fabric;
- (b) a limiting element within each passage for engaging the edges of the layers of fabric to be joined by seaming;
- (c) means for moving each of said limiting elements within its respective passage during the seaming cycle in a direction perpendicular to the machine's stitching axis as the separate layers of fabric are advanced by a cloth feed means;
- and
- (d) selecting means operatively associated with each of said limiting elements to provide for movement of the limiting element which guides the layer of fabric having the greater width to effect alignment with the edge of the other layer to which it is to be joined.
Dependencies are inferred from the claim text.