Method and apparatus for manufacturing slide fastener coupling e

Details Method and apparatus for manufacturing slide fastener coupling e Method and apparatus for manufacturing slide fastener coupling e

1980-10-29

1983-06-21

Combs, Ervin M.

Metal working

Method of mechanical manufacture

Of a slide fastener

29766, B21D 5352

Patent

active

043887511

ABSTRACT:
A blank rod of metal has a substantially Y-shaped cross section including a pair of V-shaped diverging legs each having a longitudinal rib on midportions of its inner surface. The blank rod is intermittently fed in a longitudinal direction as each of the ribs is pressed by a presser roll having series of die teeth into a succession of projections or teeth longitudinally spaced an interval from each other. The blank rod is then transversely sliced substantially centrally across each tooth on at least one of the legs into a plurality of individual slide fastener coupling elements.

REFERENCES:
patent: 2596888 (1952-05-01), Cohn
patent: 2734546 (1956-02-01), Firing
patent: 3068549 (1962-12-01), Firing
patent: 3187540 (1965-06-01), MacBroom

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