NSD CORPORATION Patent applications |
Patent application number | Title | Published |
20150152582 | NEEDLE BAR AND SEWING MACHINE - In relation to a sewing machine having a function of rotating a sewing needle in order to prevent occurrence of hitch stitches, there is provided a needle bar that obviates a necessity for an additional rotation mechanism for rotating the sewing needle. A needle bar includes: a needle bar body having a vertically-movable sleeve and a guide bush; a sleeve provided in the needle bar body and having openings, and the like, where balls are to be placed; a cam shaft that has a disc-shaped portion which is provided in the needle bar body, an upper shaft which is provided with a pair of grooves or the like having helical grooves and which is inserted in the sleeve, and a lower shaft which is formed so as to protrude downward from a guide bush; and a joint secured to the lower shaft for securing a sewing needle. | 06-04-2015 |
20140109814 | SEWING MACHINE - To provide a sewing machine that can control tension on a needle thread and tension on a bobbin thread on a per-stitch basis; that enables even heads of a multi-head embroidery sewing machine to form an identical embroidery; and that enables even a plurality of sewing machines to form identical embroidery. A memory device stores for each stitch of embroidery data a needle thread control torque value and a bobbin thread control torque value. In a needle thread torque control zone, an upstream grip section main body is closed, and a downstream grip section main body is opened. A needle thread motor is subjected to torque control in accordance with the needle thread control torque value. In the meantime, in a position control zone, the upstream grip section body is opened, and the downstream grip section body is closed, thereby subjecting the needle thread motor to position control. | 04-24-2014 |
20130125802 | SEWING MACHINE - There is provided a needle thread tension controller that can control a magnitude of tension on a needle thread for each stitch, that can draw the needle thread with a slim chance of occurrence of a thread break, that easily, accurately detects occurrence of the thread break when the thread break has occurred, and that does not cause any excess or deficiency of a quantity of accumulated thread, which would otherwise be caused by drawing a needle thread. There are provided an upstream grip section | 05-23-2013 |
20120167810 | DRIVE DEVICE FOR SEWING MACHINE SEWING FRAME - [Problem] To provide a sewing frame actuator for a sewing machine capable of positioning a sewing frame with high accuracy by preventing occurrence of distortion of the sewing frame. | 07-05-2012 |
20120097084 | SEWING-MACHINE BOBBIN THREAD TENSION CONTROLLER, AND SEWING MACHINE - There is provided a sewing-machine bobbin thread tension controller capable of elaborately, accurately controlling bobbin thread tension without depending on frictional force. | 04-26-2012 |