Abstract: Stitching patterns overlap to produce a corner-locked stitch pattern. The corner-locked stitch pattern includes one or more thread interlace points, and one or more overlays of threads from overlapping patterns. A network of corner-lock stitch patterns produces a mesh, which may be embroidered into a substrate, such as a medical textile or biotextile. Corner-lock stitch patterns resist puncture-induced and tension-induced deformation of mesh pores between corner-locked stitch patterns, and may be used to modulate compliance and enhance strength properties of a substrate into which they are sewn.

Abstract: The present invention includes program storing unit 11 for storing a program, parsing/dependence-information generating unit 12 for generating dependence information and a syntax tree for a program, dependence-information storing unit 13 for storing dependence information, syntax-tree storing unit 14 for storing a syntax tree, dependence-information tracking unit 17 for extracting interface information on a program fragment according to specifying-information specifying the program fragment and extracting a part of a program fragment associated with interface information according to selection information for selecting the interface information, and information input/output unit 15 for passing specifying-information and selection information to dependence-information tracking unit 17 and outputting interface information and a part of a program fragment passed from dependence-information tracking unit 17.

Abstract: A sewing machine has a vertical needle bar pivotable about a point thereon adjacent the upper end and moveable up and down. A sewing needle is detachably secured to the lower end of the bar and has an eye adjacent its lower end. The machine has an adjustable stitch width and, during its operation at a preset width, satisfies the requirement that the eye must be continuously properly positioned with respect to the machine hook at all times. The eye is vertically aligned with the hook point when the eye is in proximity of the hook, so as to insure reliable stitch formation at any selected stitch width. An arrangement for maintaining such proper positioning employs a first stop secured to the bar at a first location thereon intermediate its ends. A second stop is secured to the bar at a second and lower position intermediate its ends. A member is slidable along and is disposed on the bar in the space between the two stops. A spring is disposed on the bar between the first stop and the member.

Abstract: The present invention relates to a looper shifting device in an overlock sewing machine having an upper looper and a lower looper and capable of looping the end of the cloth by one needle with use of three threads composed of an upper thread (first thread) in a needle, a second thread in the upper looper, and a third thread in the lower looper. A tip end of a guide passage provided at the upper looper is open to a tip end rear portion of a brade of the upper looper and positioned adjacent to a pore. A horn is retractably inserted in the guide passage. A spreader is defined by the tip end of the horn protruded from the opening and tip end rear portion of the upper looper. There is provided at the side of the upper looper a holding device for holding the base portion of the horn.

Abstract: An apparatus for controlling movement of a looper while forming zig-zag stitches in a sewing machine. The apparatus is provided with a first drive device for moving and maintaining the looper in alignment with the machine's needle and a second drive device for causing the looper to travel in planes which are parallel when moving to cooperate with the needle in each of its stitch forming positions.