Method of making a coupling element for a slide fastener

Details Method of making a coupling element for a slide fastener Method of making a coupling element for a slide fastener

1976-10-08

1977-11-01

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Of a slide fastener

2420513R, 72338, 113116V, B21D 5352

Patent

active

040558827

ABSTRACT:
A method of making a slide fastener coupling element from a blank metal web having a longitudinally extending central portion and a pair of transversely tapered marginal portions integral one with each side of the central portion. A projection for intercoupling with another coupling element is formed by drawing a limited area portion of the web central portion out of the plane thereof and away from one surface thereof. The web is then stamped out to form a coupling element having a head portion including the projecton and formed of the central portion of the web, and a pair of tape edge clamping legs each integral with the head portion and formed of one of the marginal portions of the web.

REFERENCES:
patent: 2221740 (1940-11-01), Ulrich
patent: 2275454 (1942-03-01), Miller
patent: 2330936 (1943-10-01), Ulrich
patent: 2396727 (1946-03-01), Voity
patent: 2489718 (1949-11-01), Morin
patent: 2622295 (1952-12-01), Mikulas

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