Machine for sewing together workpiece parts having edges of equal or unequal length by means of a bead seam
AssigneeKochs Adler AG
InventorsGerhard Schneider, Rolf Ludwig, Jochen Fischer
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Abstract
A machine for sewing together two workpiece parts having edges of equal or unequal length by using a bead seam, especially for joining together the edge of a vamp and the shorter edge of a plug of a true moccasin shoe, so that the length of the plug matches that of the longer edge of the vamp, in only one operation. The bead seam forming device essentially consists of a folding finger acting in front of the needle of the sewing machine and in synchronous driving connection with the needle; several machines are described which are provided with different bead seam forming devices.
Claims4
A sewing machine for sewing an edge of a first layer of a workpiece to a second workpiece layer having a protruding edge with respect to said edge of said first layer comprising:
- stitch forming means including a needle and a looptaker mechanism;
- workpiece feeding means;
- a workpiece press pad;
- an edge guide for said first layer and said second layer;
- and means for forming said protruding edge of said second layer to a bead seam, said forming means comprising a forming edge at said edge guide for prefolding said protruding edge of said second layer and a driven folding means operating in an area in front of said needle for folding said prefolded protruding edge about the edge of said first layer and imparting work feeding motions to said protruding edge of said second layer in the direction to said needle.
Dependencies are inferred from the claim text.