Method and apparatus for applying protective strip to end of sli

Details Method and apparatus for applying protective strip to end of sli Method and apparatus for applying protective strip to end of sli

1989-01-17

1989-08-08

Hunter, H. Hampton

Sewing

Elements

Frames

D05B 9700, D05B 312

Patent

active

048542539

ABSTRACT:
In a method and apparatus for applying a protective strip by sewing to an end of a slide fastener, a continuous protective strip is fed downwardly toward a tape supply position on the base of a sewing machine with its one surface facing opposite to a direction of feed of a slide fastener until a leading end portion of the protective tape overlays the base by a predetermined length, then the leading end portion is bent in a direction opposite to the fastener feed direction by a stream of pressurized air issued from an air nozzle, thereafter, a slide fastener is advanced along the base until its leading end reaches to a sewing position located downstream of the tape supply position, thereby causing the leading end portion of the protective tape to bend into a U-shape extending from the back to the face of the slide fastener around the leading end thereof, then the U-shaped leading end portion is cut from the continuous protective tape, thereby forming a U-shaped protective strip which in turn is sewn to the leading end of the slide fastener.

REFERENCES:
patent: 2680087 (1954-06-01), Sundback
patent: 3348509 (1967-10-01), Degraw
patent: 3792672 (1974-02-01), Friedman et al.
patent: 4497270 (1985-02-01), Boser
patent: 4502399 (1985-03-01), Seaman
patent: 4561365 (1985-12-01), Schmidt et al.
patent: 4593635 (1986-06-01), Boser et al.
patent: 4674422 (1917-06-01), Boser
patent: 4708072 (1987-11-01), Frye

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