device for the application of strip formed by half coupled to zippers with a characteristic length in the mined opening support consisting of a fabric and a fabric international externalat

摘要

Apparatus for sewing in a single sewing operation a continuous slide fastener chain to portions of an upper and a lower fabric layer located at opposite sides of a slit through these layers while ensuring proper position of the two fabric layers and the slide fastener chain at the start and during the sewing operation. The apparatus comprises a two needle sewing machine provided on its needle plate and its presser foot with vertically aligned stop pins for properly aligning the two fabric layers with each other and a slide fastener chain guide which is movable in a direction normal to the needle plate between an upper inserting position permitting proper placing of the lower fabric layer on the support face of the apparatus and a lower guiding position.