Abstract: Disclosed is a two-needle sewing machine that improves strength in a convex curve part by bringing a pair of stitches close together when sewing an item. A two-needle sewing machine includes a bed part; a column part; an arm part; a needle shaft that is disposed on the leading part of the arm part; two sewing needles that are attached to the needle shaft; two horizontal hooks that catch the respective needle thread loops of the two sewing needles; and a conveyor member that conveys a material to be sewn in a direction approximately orthogonal to the bed part. On the two-needle sewing machine, the sewing needle, which is positioned in a location distant from the column part, is disposed closer to the conveyance side of the material to be sewn than the sewing needle that is positioned in a location closer to the column part.

Abstract: To provide a seam of attractive appearance in which tightening force is increased and raveling are prevented drastically. A seam (1) is formed by two needles (11, 12) juxtaposed in the direction at substantially right angles to the sewing direction (T), and consists of a chain seam (10) formed by a needle thread (12) passed through one needle (11), and a lock seam (20) formed by a needle thread (22) passed through the other needle (21). The loop (13) of a needle thread forming the chain seam (10) is passed through the loop (23) of a needle thread forming the lock seam (20) before tightening of stitch is performed, and a loop of the needle thread forming the chain seam located on a downstream side in the sewing direction is passed through the loop of the needle thread forming the upstream chain seam.

Abstract: Disclosed is a two-needle sewing machine that improves strength in a convex curve part by bringing a pair of stitches close together when sewing an item. A two-needle sewing machine includes a bed part; a column part; an arm part; a needle shaft that is disposed on the leading part of the arm part; two sewing needles that are attached to the needle shaft; two horizontal hooks that catch the respective needle thread loops of the two sewing needles; and a conveyor member that conveys a material to be sewn in a direction approximately orthogonal to the bed part. On the two-needle sewing machine, the sewing needle, which is positioned in a location distant from the column part, is disposed closer to the conveyance side of the material to be sewn than the sewing needle that is positioned in a location closer to the column part.

Abstract: The present invention provides a sewing machine that can perform zigzag sewing a cylindrical sewn article. A sewing machine 1 includes an approximately cylindrical guide member 11 that guides a sewn article A, a sewing needle 99 that sews the cylindrical sewn article A, a holding member 71 that holds the sewing needle 99 approximately vertically, a vertical hook 21 provided in the guide member 11 so that the direction of rotation is approximately perpendicular to the axial direction C of the guide member 11 and that catches the upper thread loop of the sewing needle 99, a rotary shaft 22 that rotates the vertical hook 21, and an operating means 50 that moves the holding member 71 and the rotary shaft 22 reciprocatingly at approximately the same time.

Abstract: The present invention provides a sewing machine that can perform zigzag sewing a cylindrical sewn article. A sewing machine 1 includes an approximately cylindrical guide member 11 that guides a sewn article A, a sewing needle 99 that sews the cylindrical sewn article A, a holding member 71 that holds the sewing needle 99 approximately vertically, a vertical hook 21 provided in the guide member 11 so that the direction of rotation is approximately perpendicular to the axial direction C of the guide member 11 and that catches the upper thread loop of the sewing needle 99, a rotary shaft 22 that rotates the vertical hook 21, and an operating means 50 that moves the holding member 71 and the rotary shaft 22 reciprocatingly at approximately the same time.

Abstract: To provide a seam of attractive appearance in which tightening force is increased and raveling are prevented drastically. A seam (1) is formed by two needles (11, 12) juxtaposed in the direction at substantially right angles to the sewing direction (T), and consists of a chain seam (10) formed by a needle thread (12) passed through one needle (11), and a lock seam (20) formed by a needle thread (22) passed through the other needle (21). The loop (13) of a needle thread forming the chain seam (10) is passed through the loop (23) of a needle thread forming the lock seam (20) before tightening of stitch is performed, and a loop of the needle thread forming the chain seam located on a downstream side in the sewing direction is passed through the loop of the needle thread forming the upstream chain seam.

Abstract: A bobbin case for accommodating a bobbin which has a shaft portion and a collar portion formed on both sides of the shaft portion on which a thread is wound, the bobbin case comprises: an opening being opened on at least one side of an axial direction of the shaft portion, for detachably accommodating the bobbin; a thread take-up portion provided in the axial direction opposite to the opening, for pulling out the thread of the bobbin; and a holding member which makes contact with the bobbin and nonrotatably holds the bobbin.

Abstract: A sewing machine needle receiving and transferring arrangement wherein a clamp device for the needle is provided in each of the needle bars so as to engage or disengage the needle with or from each of the needle bars. Such clamp device engages or disengages depending on the energized or deenergized mode of a solenoid.

Abstract: A sewing machine includes a base, a sewing device installed on this base to sew material, and a pair of material setting/transfer assemblies provided on the base. Each material setting/transfer assembly comprises a sewing portion setting mechanism fixed on the base which is able to position portions of the material to be sewn including tucking ends; a transfer mechanism mounted on the base movably between this sewing portion setting mechanism and the sewing device; and a tuck-in mechanism movably attached on the base for approaching to and retreating from the sewing portion setting mechanism.

Abstract: A button sewing apparatus comprising a button supply device, a X-Y mover, a stay button chucking device, a surface button chucking device, a surface button turning device, a presser foot device, a thread guiding device and a thread holding device. Button neck wrapping is performed in a manner closely simulating "hand" sewing. After sewing both a stay button and a surface button to a workpiece, a sewing table makes a circular motion while keeping a needle entry as the center, and a thread is slidably clamped and guided to pass through a guide hole tentatively formed underneath a needle such that the thread wraps firmly around the button neck.

Abstract: A button sewing apparatus comprising a button supply device, a X-Y mover, a stay button chucking device, a surface button chucking device, a surface button turning device, a presser foot device, a thread guiding device and a thread holding device. Button neck wrapping is performed in a manner closely simulating "hand" sewing. After sewing both a stay button and a surface button to a workpiece, a sewing table makes a circular motion while keeping a needle entry as the center, and a thread is slidably clamped and guided to pass through a guide hole tentatively formed underneath a needle such that the thread wraps firmly around the button neck.

Abstract: The invention relates to a sewing device which includes a sewing machine fixedly provided on a horizontal top surface of a bench, a fabric transfer mechanism for holding and making a fabric movable on the tip surface of the bench between a first position and a second position with a machine sewing portion being interposed therebetween and a pulse motor interlocked with the fabric transfer mechanism to move the mechanism. The machine sewing is performed during the movement of the fabric transfer mechanism from the first position to the second position. The device further includes a memory portion for storing length data of a plurality of seam lines to be stitched on the fabrics, the seam lines being different in length from one another.