Intermittent top shirring attachment for sewing machine

Details Intermittent top shirring attachment for sewing machine Intermittent top shirring attachment for sewing machine

1982-10-08

1984-08-21

Schroeder, Werner H.

Sewing

Work manipulating

Rufflers and gatherers

1122621, 112322, D05B 2712, D05B 3508

Patent

active

044663676

ABSTRACT:
A shirring attachment includes a rotatable feed wheel 51 positioned over a stripper blade 60 and normally positioned in spaced relationship above the work surface of and in front of the sewing needle 45 of a sewing machine. A first ply of material 78 is extended over the work surface and beneath the stripper blade to the feed dogs 68 of the sewing machine, and a second ply of material 80 is extended over the stripper blade to the sewing needle. The rotatable feed wheel is driven with a peripheral velocity that corresponds to the speed of the sewing machine motor, usually at a higher velocity that the feed dogs, and the feed wheel is moved by an air-actuated cylinder 54 at the command of the machine operator down toward the stripper blade into engagement with the upper ply of material so as to feed the upper ply of material to the sewing needle at a faster rate than the movement of the lower ply of material. The upper ply of material is gathered at the needle of the sewing machine and sewn in its gathered condition to the lower ply of material.

REFERENCES:
patent: 1990616 (1935-02-01), Rubel
patent: 2128353 (1938-08-01), Dowd
patent: 2170948 (1939-08-01), Meyer
Instructions Handbook, Rimoldi 527,529, cover, pp. 58, 59, 60 & 61, and back cover.

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