Sewing – Elements – Frames
Patent
1978-04-10
1980-08-19
Schroeder, Werner H.
Sewing
Elements
Frames
D05B 312, D05B 3506
Patent
active
042178401
ABSTRACT:
A method and apparatus for applying a zipper to a length of material. The system involves the feeding of the material to a sewing machine while simultaneously locating separate zipper tape sections on the material whereby the tape sections are attached to the material. These sections are attached with the teeth supporting edges thereof facing outwardly and with the opposite edges thereof facing inwardly and being positioned adjacent each other. The material is then cut along a line adjacent these opposite edges whereby the material is formed into separate pieces. Thereafter, the teeth supporting edges are folded back toward each other whereby the material can be rejoined by the zipper. The apparatus preferably includes a spreading device to hold the opposite edges of the zipper in spaced relationship during the cutting operation whereby the cutter will not engage the tape. The zipper sections are preferably fed from a source which involves joined sections. A separator is utilized for opening the zipper, and guide means then reverse the section positions whereby the teeth supporting edges and free edges are properly positioned as the sections are fed to the sewing machine.
REFERENCES:
patent: 3633528 (1972-01-01), Frohlich
patent: 3685474 (1972-08-01), Frohlich et al.
patent: 3710745 (1973-01-01), Yoshikawa
Golembeck Gerald A.
Wilwert Eugene D.
Falik Andrew M.
Schroeder Werner H.
The United States Bedding Company
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