Pfaff Industriemaschinen Gmbh

Werner Striegler

Gunther Mall

Karl-Ludwig Manuel

Kurt Petry

Heinz Hubele

A sewing machine with a workpiece alignment device for the automatic stitching of workpieces with convex edge sections has a stepwise feed mechanism and an alignment tool operating alternately with the feed mechanism. The tool rotates the workpiece around the axis of the needle when the needle pierces the material, and holds it resting against a guide rule. The alignment tool is driven by drive mechanisms positively connected to one another, because of which the sewing machine can be operated at a relatively high speed.

Sewing machine with a workpiece alignment device

A device for feeding a strip of material into a sewing machine so that it can be sewed onto a cut fabric which is fed over a base plate includes a stop which is positionable in the feed path of the strip of material and which control the operation of the sewing machine so that the strip will not be fed unless it is aligned with the associated workpiece and guided past a reciprocating needle.

Device for feeding a strip of material and sewing it onto a cut of fabric

A device for use on a sewing unit in sewing and cutting-open tucks on cut pieces of garments, comprises a sewing machine having a stitch formation zone which operates in conjunction with a work advance table. The work advance table has an edge around which the work is folded and a template rail is supported from the support for the work table and includes a pressure plate portion which may be moved into association with the work and a template rail which provides a guide for the feeding of the work piece into association with the sewing needle so that the shape of the seam may be followed. The apparatus includes a cutting knife which is carried on a carrier plate which is pivotable backwardly and forwardly. The cutting knife comprises a rotatable cutting blade which is rotated by a motor on the pivotal carrier plate. The carrier plate also provides a pivotal support for a guide spur which is in the form of a wedge-shaped plate which has a slot therein through which the blade extends and which includes an outer knife-like edge which engages into the space between the two materials. For this purpose, the work advance table is formed at least partly with a forked cross-section having spaced apart top and bottom legs defining a slot therebetween or an opening for the introduction of the guide spur so that the cutter is guided along the edge of the fabric to effect its cutting operation.

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Kaiserslautern, Germany

Werner Striegler