Method and arrangement for sewing a slide fastener into a carrier material
AssigneeWilliam Prym-Werke KG
InventorsHansjurgen Pickert, Dieter Sesselmann
Life of this patent
Estimating the term…
Abstract
A multiple-needle sewing machine has a presser foot and first and second feed dogs for an upper and a lower layer of the carrier material into a slit of which this slide fastener is to be sewn. An arm is mounted on the sewing machine and can pivot in a horizontal plane between a position in which the material and the slide fastener are placed onto the arm and maintained in a predetermined relationship relative to one another, and a second position in which the material and the slide fastener are supplied, while still being maintained in this predetermined relative position, to the feed dogs which engage the material and advance it as the sewing machine sews the slide fastener to the material.
Claims9
An arrangement for sewing a slide fastener onto opposite sides of a slit in a carrier material that is composed of an upper and a lower layer, comprising a multiple needle sewing machine having a presser foot and first and second feed dogs for said upper and said lower layer, respectively, in the region of said presser foot;
- and means for engaging said carrier material and said slide fastener in a predetermined relationship to one another, said means comprising an arm and a pivot mounting said arm on said sewing machine for pivotal movement between a first position located laterally outside the region of said presser foot for conveniently placing said carrier material and said slide fastener thereon, and a second position in which it supplies said carrier material and said slide fastener to said region to be transported in said predetermined relationship by said feed dogs during the sewing operation.
A method of sewing a slide fastener into a slit formed in a carrier material composed of at least an upper and a lower layer, comprising the steps of arranging the material and the slide fastener in predetermined relative orientation on a pivotable support positioned laterally outside the region of the presser foot of a sewing machine;
- pivoting said support so as to move said material to a position adjacent the presser foot in which said layers are engageable by the upper and lower feed dogs of the sewing machine, while maintaining said relative orientation;
- and sewing said slide fastener to said material.
Dependencies are inferred from the claim text.