APPARATUS FOR MAKING MONOFILAMENTARY SLIDE-FASTENER MEMBERS

摘要

Two synthetic-resin monofilaments are deposited from opposite sides on a continuously moving horizontal carrier strip provided with two rows of longitudinally spaced upstanding lugs disposed along opposite edges thereof. Each monofilament is entrained along an upwardly convex ridge of a respective guide element by a coacting transport element hugging that edge with a concave underside which has a bulge for deforming the filament to provide it with successive coupling heads, the transport elements being swingable in planes transverse to the carrier strip whereas the guide elements are vertically reciprocable to engage and disengage the respective monofilaments in timed relationship with the movement of the associated transport elements and the carrier strip between whose lugs these monofilaments are inserted in the form of narrow loops each carrying one coupling head.