Metal working – Means to assemble or disassemble – Slide fastener
Patent
1990-08-24
1991-07-02
Echols, P. W.
Metal working
Means to assemble or disassemble
Slide fastener
29408, A41H 3706
Patent
active
050275011
ABSTRACT:
An apparatus for attaching bottom stops of a generally H-shaped cross section to a slide fastener chain. According to a preferred embodiment, a pair of stringer tapes of one of successive spaced element-free space sections are spread apart by a spreading member. The top and bottom faces of the center base of the bottom stop are clamped resiliently by clamping members until attaching of the bottom stop to the fastener chain is finished and the clamping members move vertically for placing the bottom stop between the stringer tapes of the space section. The spread pair of stringer tapes are then drawn near to come toward each other by a drawing member until the beaded edges of the space section can be threaded respectively through spaces formed between the pair of gripping legs of the bottom stop. Then the fastener chain is transported so that the bottom stop is located to be contacted with the space section-side face of the terminal element of the row of coupling elements. Finally, the gripping legs of the bottom stop are bent with a punch and a die for attaching the bottom stop to the fastener chain. In the present invention, since clamping operation is carried out so as not to interfere with the bending operation, the bottom stop can be attached to the slide fastener chain surely and precisely.
REFERENCES:
patent: 4433478 (1984-02-01), Oyama
patent: 4561161 (1985-12-01), Morita
Echols P. W.
Yoshida Kogyo K.K.
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