Abstract: First calculation section calculates, on the basis of sewing data, a sewing-progressing direction angle for rotating a rotary cylinder to orient an embroidering material, guided by a guide lever of a zigzag sewing head, in a sewing-progressing direction. Second calculation section adds or subtracts a zigzag-swinging angle to or from the sewing-progressing direction angle to thereby calculate a target rotational angle of the rotary cylinder. Swinging mechanism may be provided for swinging the guide lever relative to the rotary cylinder, and a swinging amount corresponding to the swinging angle of the rotary cylinder may be added to a width of zigzag-swinging by the swinging mechanism. Alternatively, every swinging movement necessary for zigzagging the embroidering material may be set by the swinging angle without the guide lever being caused to swing relative to the rotary cylinder.

Abstract: A zigzag sewing machine is provided. The zigzag sewing machine includes a stitching motor which moves a needle, a feeding motor which moves a feed dog to feed a cloth, a needle swinging motor which swings the needle, a multistage-operating portion operable to adjust at least one of a feed amount of the cloth and a swing amount of the needle in a minimum adjustable unit, and a control section which controls the stitching motor, the feeding motor and the needle swinging motor to carry out a zigzag sewing in accordance with the at least one of the feed amount and the swing amount adjusted by the multistage-operating portion. The control section is configured to selectively assign a first value and a second to the minimum adjustable unit depending on whether the stitching motor is in operation or not.

Abstract: An embroidery process allowing for extra lengths of stitched thread pairs to be laid down in a zigzag pattern while embroidering on a dissolvable substrate such that when the substrate is removed, the extra length allows the two-dimensional embroidered structure to relax into a three-dimensional shape.

Abstract: A zigzag sewing machine is provided. The zigzag sewing machine includes a stitching motor which moves a needle, a feeding motor which moves a feed dog to feed a cloth, a needle swinging motor which swings the needle, a multistage-operating portion operable to adjust at least one of a feed amount of the cloth and a swing amount of the needle in a minimum adjustable unit, and a control section which controls the stitching motor, the feeding motor and the needle swinging motor to carry out a zigzag sewing in accordance with the at least one of the feed amount and the swing amount adjusted by the multistage-operating portion. The control section is configured to selectively assign a first value and a second to the minimum adjustable unit depending on whether the stitching motor is in operation or not.

Abstract: An embroidery process allowing for extra lengths of stitched thread pairs to be laid down in a zigzag pattern while embroidering on a dissolvable substrate such that when the substrate is removed, the extra length allows the two-dimensional embroidered structure to relax into a three-dimensional shape.

Abstract: A method and a sewing machine are provided to form sewing patterns allowing the stitching width to be changed during sewing for a flexible adjustment of parameters of the sewing pattern. In particular the stitch length a can be changed without changing the exterior design of the sewing pattern.

Abstract: A sewing machine has a sewing head which includes a needle bar drive mechanism for vertically reciprocally moving a needle bar, a presser foot drive mechanism operable to vertically move a presser foot in synchronism with the vertical movement of the needle bar, a direction control mechanism operable to pivot the presser foot about the needle bar for controlling a direction of the presser foot to a predetermined direction, and a guide member drive mechanism operable to reciprocally pivot a guide member. The guide member is adapted to guide a cord-like material to be sewn on a work. The presser foot drive mechanism, the direction control mechanism and the guide member drive mechanism have a first drive source, a second drive source and a third drive source, respectively, provided independently of each other.

Abstract: A stitchbonded absorbent article and method of making same are presented. The article exhibits good hand, repeated washing durability, and absorbency.

Abstract: A thread-cutting device for zigzag sewing machines for forming uniformly short thread ends regardless of the top stitch position of the last stitch. The thread cutter 28 is movable in a plane that is parallel to the thread catcher 33 and is connected by a drive unit 45 through 58 having stop sections 54, 55 to the drive of the thread catcher 33 such that the thread catcher can be moved, together with the cutter, into the cutting position located below the center of the stitch hole. While the thread cutter 28 stops in the cutting position, the thread catcher completes the thread separation process. The thread cutter 28 is moved back during the return movement of the thread catcher 33 only after the threads have been cut. The drive unit 45 through 58 for the thread cutter 28 is of positive-locking design, as a result of which even thick threads are cut reliably. The thread cutting device is particularly suitabloe for installation (even subsequent installation) in stitch group zigzag sewing machines.

Abstract: The present invention relates to a multiple-needle sewing machine which is capable of making stitch tracings in zigzag, etc. on a cloth by moving up and down a plurality of needles, with the cloth held between a needle plate and a cloth holder and moved right and left. The needle plate has a long hole with such a length that the right and left movement of the needle plate is not hindered by the vertical movement of the plurality of needles. Within the long hole, there is a needle passing plate positioned which has needle holes through which the needles pass. This needle passing plate is formed shorter than the long hole of the needle plate so as not to hinder the right and left movement of the needle plate. Such a structure is effective for making finely a plurality of the same stitches in zigzag, etc.

Abstract: An improved modular sewing machine which has a base unit including a lower horizontal unit and a vertical upright unit to which can be attached demountable upper and lower stitching instrumentalities, the mounting surfaces of the stitching instrumentalities being substantially coplanar.

Abstract: A work clamp shifting mechanism for a four hole button sewing machine in which operator influenced cam shifts the work holding jaws between two detent retained positions and also releases the thread tension during each shift between detent positions to defer the work from being disoriented in the work holding jaws.

Abstract: An automatic machine for zig-zag stitching of tubular elements, in particular for stitching trimmings on mocassin type footwear and for fixing transversal reinforcing bands to the vamp of the footwear, where the cylinder containing the "crochet" is circular-sectioned and the work plane on which to lay the material to be stitched is curved with its curve center on the axis of the cylinder and the work plane is supported by a collar co-axial with and external to the cylinder, and longitudinally mobile and rotarily coaxial with respect to said cylinder. The machine also includes the pressure foot which grips the material to be stitched tautly to said work plane, the pressure foot being supported by a guide line fixed to said collar and arranged above the work plane.