Abstract: A sewing device for producing fastening stitches and tack stitches in a workpiece is described, in which a sewing head is installed with a jogging mechanism laterally vibrating the reciprocating needle as to perform a zig-zag movement or a needle-feed movement while a continuous relative feed movement between the workpiece and the needle is produced by a control device. The control device includes means for maintaining the direction of the needle vibration and the feed movement, as the fastening stitches are produced.

Abstract: An automatic sewing machine for sewing workpieces of different sizes is described, in which relative movement between a workpiece and the needle of a sewing head is controlled by a computer receiving the program according to the contour to be stitched. A measuring device is provided for automatically matching the relative movement of the sewing process with the size adjustable workpiece receiving elements. The measuring device continuously detects the size adjustment of the workpiece receiving elements and feeds the size adjustment into an adapting electronic unit converting analog information into digital information used by the computer controlling the stitching operation.

Abstract: A sewing machine for producing a stitch pattern according to a predetermined program, in which a workpiece receiving device is driven by a linkage cooperating with a rotating control cam. An adjustment device makes it possible to affect portions of the stitch contour with respect to their relative position. The adjustment device has elements interposed between the control cam and the drive shaft for allowing a lateral displacement of the cam relatively to the drive shaft. The amount and the angular position of lateral adjustment may be achieved without rotating the cam and/or the drive shaft.

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.

Abstract: In a sewing machine a workpiece feeding device having a lower feeding member intermittently and reversably driven and an upper feeding member in a steady contact with the workpiece and drivingly connected to the lower feeding member by means of connecting elements including one-way coupling means and a device arranged between the latter and the upper feeding member for interrupting or reversing the upper feed motion simultaneously when reversing the lower feeding member; different embodiments are described.

Abstract: In a sewing device for sewing fabric cuts on workpiece parts, which are moved by means of a workpiece clamping plate relatively to the needle of a sewing machine, a tiltably arranged and easily accessible vertical axis rotary looptaker for allowing replenishment of thread supply.

Abstract: In a machine for sewing together two workpiece parts by means of a bead seam, a device for providing each stitch with an additional amount of thread for forming the bead seam with loose loops, e.g. in order to produce moccasin footwear having a flattened bead seam as demanded by the fashion. Means are provided to disengage the loop forming device for producing a regular bead seam.

Abstract: An apparatus for use in producing men's shirts or blouses provided with attached collars, which have a bottom fabric layer with a joining edge and a top fabric layer. The apparatus is provided with a marking device for indicating the collars at several points before sewing on the shirts or blouses and with a cutting device for trimming the joining edge of the bottom fabric layer of a collar after indicating. The marking device is provided with means for adjusting to variable collar sizes and changing over to different collar contours and the cutting device containing means for feeding the collars during trimming and for guiding the collars along the cutting means arranged side by side on a base plate. By this it is possible to perform two working operations by only one operator.

Abstract: A device for infolding margins of a binding strip, folding the strip about a longitudinally directed main fold line, sewing the folded binding strip to one edge of a slit of a shirt sleeve or a tubular garment, e.g., skirts, blouses, fronts of pullover shirts, and securing the area where the two edges of the slit meet, by means of a seam. The device carries out the working steps in only one uninterrupted sequence of operation. The device can be provided with additional means for preparing a second binding strip and a second sleeve while sewing the two preceding workpiece parts.

Abstract: An adjustable template for use in a sewing device for sewing workpieces of different shapes. The template has a supporting plate and a plurality of segments each having wedge-shaped lateral edges, a bearing surface for a template follower means and a slot-shaped clearance formed in the bearing surface, for receiving and slidably fastening a flexible connection wire. As a result of connecting all segments at their bearing surfaces, only several of the plurality of segments are secured to the supporting plate. Consequently, an alignment of the bearing surfaces of the segments according to a required course of a seam, is simplified.

Abstract: A guide template for sewing machines in which a driven roller follows along the template's contour to sew workpieces of different form and/or size. The template has a number of sections which are movable relative to one another. For purposes of lengthening one of these template sections, a second movable and adjustable template section is provided in combination with a third template section which is pivotably mounted on the second template section. The third template section may be adjusted to different contours by an adjustment device. This adjustment device has a cam plate interacting with the third template section, and mounted rotatably on the machine frame through the use of a handwheel. The second template section is located between the first and third template sections, and is used to extend the template. The second template section is held by a gear rack on a plate on the machine frame, and the gear rack engages a pinion which is rotatable with an adjustment knob for shifting on the gear rack.

Abstract: A workpiece holder for sewing machines in which a plurality of supporting segments are located next to one another and are displaceable relative to each other. These supporting segments have a rim zone at which needles are located. The rim zone, furthermore, supports the edge of a workpiece to be processed. A device which may be lowered onto the workpiece, cooperates with the needles for holding the workpiece on the needle. A contour adjusting device is provided with templates for shifting the supporting segments. The templates have a contour corresponding to the seam to be applied to the workpiece. The supporting segments are, moreover, formed by rails having a U-shaped cross-section with cross bars carrying the workpiece and having recesses for permitting passage of the needles. The latter are arranged on a two-arm lever rotatably supported in each of the supporting segments, and they are held in a position permitting passage through the supporting segments within the recess by means of a spring.

Abstract: A template control for relative movement between a workpiece or material and a tool which may be in the form of a needle on processing machines. The template is adjustable to different shape and/or size of a workpiece which may be in the form of a garment. A roller is pressed against the template which is provided with a coaxially located and driven gear pinion. The pinion meshes with teeth adaptable to the shape of the template for purposes of guiding the roller without slippage along the template. The latter has an elastic tape which determines the shape of the contour. The tape is held in a number of tape carriers arranged displaceably next to one another and parallel to one another. Displaceable tooth segments under tension of a spring, are associated with the tape carriers. These tooth segments when located next to one another, form a gear rack with identical toothing.

Abstract: A lubricating arrangement for the raceway of the bobbin case of a rotary sewing machine looptaker having a body with a recess formed by a bottom and a substantially cylindrical sidewall for holding the bobbin case. A hub of the looptaker has an oil collecting chamber in the form of an annular cavity with undercut inside peripheral area. The chamber receives oil supplied from an oil collecting sump. Centrifugal action causes the oil to flow through a conduit located between the oil collecting chamber and the bottom of the recess, via an adjusting device, to the raceway for the bobbin case. For regulating the oil delivery, the conduit is surrounded along a portion of its length by a borehole located in the bottom. An adjusting screw is provided for tilting the conduit in relation to the axis of the loop taker. An oil collecting sump closed by a cover, is in the bottom of the looptaker body. Oil is supplied to the oil collecting sump through a hollow looptaker shaft.

Abstract: A sewing device for sewing similar workpieces of alternate sizes, the device is provided with means for the positioning control and the insertion of the workpiece cuts to be sewn, into the workpiece clamping holders. To adapt the device for workpieces of other sizes, there are provided adjusting means for the simultaneous displacement of two-piece clamping holders, master cams and the stop dogs of an inserting device.