Metal working – Method of mechanical manufacture – Of a slide fastener
Patent
1978-12-29
1980-12-02
Combs, Ervin M.
Metal working
Method of mechanical manufacture
Of a slide fastener
29770, B23P 1904
Patent
active
042362938
ABSTRACT:
A method and apparatus for forming space sections in a continuous length slide fastener chain in which the interlocking elements fastened on the carrier tapes within the section are pressed and deformed with a punch-die unit having a composite punch composed of an outer punch and an inner punch and the thus deformed elements are retained by the punch-die unit in engagement with a pair of grooves on the upper surface of the die and lower surface of the inner punch while the carrier tapes are pulled and displaced by individual grippers from the front of the punch-die unit in an obliquely rearward direction, preferably, at such an angle that the angle between the moving line of the gripper and the center line of the punch-die unit is about a half of the tape-abstracting angle whereby all of the elements within the section can be removed from the carrier tape with a uniform abstracting angle.
REFERENCES:
patent: 2394197 (1946-02-01), Morin
patent: 3685130 (1972-08-01), Doerter
patent: 3689980 (1972-09-01), Oyama
patent: 3852869 (1974-12-01), Shimai
patent: 4062100 (1977-12-01), Heimberger
patent: 4091532 (1978-05-01), MacFee
Morita Toyoo
Oura Hiroshi
Combs Ervin M.
Yoshida Kogyo K.K.
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