Elastic band feeding and tensioning mechanism for a sewing machi

Details Elastic band feeding and tensioning mechanism for a sewing machi Elastic band feeding and tensioning mechanism for a sewing machi

1987-02-17

1987-11-03

Hunter, H. Hampton

Sewing

Elements

Frames

11212126, 112130, 112104, 112113, 112305, 1122621, 112152, D05B 2100, D05B 3704, D05B 322

Patent

active

047037067

ABSTRACT:
An elastic band feeding and tensioning mechanism and method for the application of an elastic band, having at least a portion thereof tensioned, on a fabric piece fed under a stitching needle of a sewing machine. A footplate guide is provided for positioning the elastic band in alignment on a fabric piece. A sewing guide member is adapted for securement to a foot arm of a sewing machine, and has a jaw opening for receiving the elastic band. A guide mechanism is provided for guiding the elastic band toward the jaw opening. The elastic band is advanced through the sewing machine by the feeddog of the sewing machine and tension is applied to the band by tension members. The tension members comprise a drive and idler rolls driven at a band feeding speed slower than the feeddog, and a further band stretching roll which instantaneously stitches the band between the drive roll and feeddog. A control circuit activates the tension members whereby to feed a predetermined length of the elastic band in a predetermined stretched condition through the sewing guide member for sewing the stretched elastic band on the fabric piece. A cutting element also cuts the elastic band at a predetermined location.

REFERENCES:
patent: 3792672 (1974-02-01), Friedman et al.
patent: 4024824 (1977-05-01), Haff, Jr.
patent: 4067273 (1978-01-01), Manjorio
patent: 4132184 (1979-01-01), Burton
patent: 4147120 (1979-04-01), Adamski et al.
patent: 4182248 (1980-01-01), Klages
patent: 4590874 (1986-05-01), Baclagis

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