Abstract: There is provided a sewing machine needle 10 including: a shank portion 11 that is attached to a sewing machine; and a shaft portion 12 that is provided on a front end side of the shank portion 11; wherein: a needle eye 13 is formed to penetrate the shaft portion 12, and a long groove 14 for guiding a thread from a position of the needle eye 13 toward the shank portion 11 is formed in the shaft portion 12; and a suppression portion 16 for suppressing movement of a needle thread 21 is provided in an intermediate portion of the long groove 14. Thus, it is possible to provide a sewing machine needle by which a loop can be formed stably and that causes few damage to a needle thread and can be also manufactured easily.

Abstract: There is provided a sewing machine needle 10 including: a shank portion 11 that is attached to a sewing machine; and a shaft portion 12 that is provided on a front end side of the shank portion 11; wherein: a needle eye 13 is formed to penetrate the shaft portion 12, and a long groove 14 for guiding a thread from a position of the needle eye 13 toward the shank portion 11 is formed in the shaft portion 12; and a suppression portion 16 for suppressing movement of a needle thread 21 is provided in an intermediate portion of the long groove 14. Thus, it is possible to provide a sewing machine needle by which a loop can be formed stably and that causes few damage to a needle thread and can be also manufactured easily.

Abstract: A bearded needle comprises a needle shank whose tip is shaped into a thin shank portion by tapering down the thickness of the needle shank. The thin shank portion has a conical projection portion at the extremity thereof. The conical projection portion has a hooking tip portion to form a hooking portion at the tip of the needle shank. The hooking portion has a substantially U-shaped bottom portion that hooks and holds a thread, and includes sloping surfaces each inclining toward an outer edge of the hooking tip portion. The sloping surfaces each extend from the bottom portion over both the conical projection portion and the hooking tip portion.

Abstract: A sewing machine needle free from combined troubles of stitch skipping and fabric yarn breakage, irrespective of high-speed and multifunction sewing machines and diversified materials being used. The sewing machine needle includes a shank, a blade connected to the shank, a needle point formed at an extremity of the blade, a needle eye formed in the vicinity of the needle point, and a long groove extending from the needle eye along the blade. The blade is provided at a portion thereof where the scarf is formed with a crank in such a manner that a side of the portion is outwardly protruded in a direction opposite from the scarf with respect to a central axis of the needle. An end of the needle eye contiguous to the scarf is protruded outward by a predetermined height from a contour of the blade.

Abstract: A sewing machine needle capable of preventing stitch skipping and fabric yarn breakage, irrespective of high-speed and multifunction sewing machines and diversified materials being used. Over a predetermined length from an edge, closer to a needle point, of a needle eye toward the needle point, a blade has a straight profile extending parallel to a longitudinal axis of the needle as viewed from a side of the needle in a direction orthogonal to a direction in which the needle eye extends. Over a predetermined length from the straight profile portion toward the needle point, the profile of the blade is a flat cross-section in which the thickness thereof in the direction in which the needle eye extends is larger than the width thereof in the direction orthogonal to the direction in which the needle eye extends. In a needle point portion following the flat cross-section portion and extending to the needle point, the blade has a sectional shape of a perfect circle.

Abstract: A sewing machine needle is manufactured without producing any burrs on a blade by subjecting the whole blade to die pressing. A needle blank (10) is subject to double swaging, resulting in it being formed with blade sections (14, 16). Then, the needle blank is formed with an elongated portion (22) for subsequently forming a clearance-above-eye above a needle eye. The die pressing permits both side surfaces of a long groove (28) to be spread so as to be spaced from each other at a predetermined angle, and permits the clearance-above-eye (40) and eye portion (33) to be formed. The sewing machine needle thus formed exhibits sufficient rigidity and provides an increased space between the blade and a sewing thread, resulting in a sewing operation being carried out stably and at an increased speed.

Abstract: A sewing machine needle has a chamfer portion formed in its shaft which defines an interspace between the needle shaft and a thread running in an upward direction parallel to the needle shaft to permit a thread loop catching device to enter into the interspace during machine operation. The chamfer portion is formed by a portion of the needle shaft which is displaced with respect to the axis of the needle which extends substantially parallel thereto and yet which has substantially the same transverse cross-section as other portions of the shaft and by shaft transition portions which adjoin the displaced shaft portion which extend at an angle with respect to the needle axis. In this manner, a deep chamfer portion is obtained so as to increase the interspace between the needle shaft and sewing thread so that a reliable engagement of the sewing thread by the thread loop catching device can be achieved without the necessity of a so-called loop stroke.