Janome Sewing Machine Company Limited

Janome Sewing Machine Industry Co., Ltd.

Yoshikazu Ebata

Hideaki Takenoya

Masayoshi Takahashi

Masashi Ninomiya

Reishi Nomoto

Susumu Hanyu

Eiji Murakami

Eiichi Shomura

Tsutomu Takagi

Takeshi Nakamura

Yoshitaka Takahashi

Koji Maeda

Nobufusa Kuroki

Takeshi Kongo

Yukio Hosaka

Akira Orii

Yasuro Sano

Noboru Kasuga

Michio Hisatake

Akio Koide

Koshiro Omiya

Hidenori Sasako

Tamotsu Nakagawa

Satoshi Maruo

Akira Orll

Reishi Nomota

A threading device of a sewing machine includes: a needle bar which is supported on a sewing machine body so as to be slidable in an up-down direction and to a distal end of which a needle having a needle hole is attached; a threading shaft member which is movably supported on the sewing machine body in parallel to the needle bar; a guiding member provided at a lower end of the threading shaft member so as to guide a thread to the needle hole; and an air supplying member that supplies air to the guiding member. The guiding member includes: a guiding path portion of which the path width gradually narrows toward the needle hole such that the air supplied from the air supplying member is guided toward the needle hole.

Threading device of sewing machine

A sewing machine includes a horizontal hook that is held within an outer hook and an accommodating portion of the outer hook that includes a spiral-shaped columnar portion to which the thread loop captured by the hook point is wound. The sewing machine also includes a chain looper that guide the thread loop induced in spiral shape upward, and an inner hook for chain stitching that is supported by the outer hook that restricting upward movement of the thread loop drawn into the interior of the outer hook.

Sewing machine

Disclosed is a sewing machine with work edge cutting mechanism having an upper bladewhich is operated to cut the work edge in cooperation with a lower bladeduring stitching operation, the upper blade being stopped and retreated to an inoperative position below the needle platein case the stitching operation is performed without necessity of cutting the work edge, the sewing machine substantially comprising a main drive shaftwhich is rotated to vertically reciprocate a machine needle, a device for converting the rotation of the main drive shaft into vertical movement, a device for transmitting the vertical movement to the upper blade, a device for intercepting the transmission movement of the transmitting means, wherein the intercepting device is operated to cause the upper blade to retreat from the operative position to the inoperative position below the needle plate.

Sewing machine with work edge cutting mechanism

A threading device of sewing machine is disclosed, wherein the upper thread extended from a thread supply mounted on a sewing machine body may be easily and smoothly guided into engagement with a thread holder simultaneously when the threading device is operated to pass the upper thread through the eye of needle attached to the lower end of needle bar, the thread holder being arranged between the thread supply and the needle. The threading device comprises a vertically movable needle barhaving a needle attached to the lower end thereof, the needle having a needle eye, a needle bar supportfor supporting the needle barsuch that the same may be vertically movable, a thread holdermounted to the lower end of the needle bar, a threading member Ahaving a thread engaging portionand a threading hook, a threading shaftfor having the threading member Asecured to the lower end thereof, an operating section C for vertically moving and axially rotating the threading shaftto pass the upper thread n through the needle eye, the threading member Abeing so formed as to provide the thread engaging portionfor guiding the upper thread to the needle eye, the needle holderbeing formed with a groovefor holding the upper thread n, the groovehaving an openingat which the upper thread n is guided into the groovefrom the rear side of the thread holderwhile the thread engaging portionis moved down with the upper thread n which is to be passed through the needle eye

An embroidery stitching sewing machine is disclosed, the sewing machine substantially comprising pattern selecting means for optionally selecting a desired embroidery pattern to be stitched from a plurality of different patterns memorized, an X-direction moving mechanism which is accommodated in the machine housing and is operated to move in X-direction between a position adjacent the standard of sewing machine and a position spaced from the position adjacent the standard, a Y-direction drive attachment A holding an embroidering frame on which a work to be stitched is set, the Y-direction drive attachment A being optionally selected from a plurality of Y-direction drive attachments , each of which is provided with a different type of Y-direction moving mechanism and is detachably mounted to the output potion of X-direction moving mechanism , wherein the X-direction moving mechanism and the selected Y-direction drive attachment A of Y-direction drive attachment are operated in synchronism with the vertical movement of the machine needle under the control of data to form stitches in the stitching area determined by the X-direction moving mechanism and the selected Y-direction drive attachment A.

Embroidery stitching sewing machine

An embroidery sewing machine is disclosed, the sewing machine having a stitch forming device including a needle ( ) vertically reciprocated to form stitches on a work to be stitched, an embroidering frame ( ) for holding the work and being moved relative to the needle in synchronism with the needle, and the stitch forming device being operated to decide a maximum speed of the vertically reciprocating needle ( ) in dependence upon the type and weight of the work and the size and weight of the embroidering frame ( ) and being further operated to reduce the speed of the vertically reciprocating needle ( ) as the weight of the work and embroidering frame ( ) increases and as the embroidering frame ( )is partly moved away from the body of sewing machine in the Y-direction.

Embroidery sewing machine

The invention has been made to provide an embroidery sewing machine which may be automatically operated to withdraw the embroidering frame to a predetermined inoperative position. More particularly, in case the power source switch is turned off, the power happens to be in failure, the power cord happens to be disconnected, the sewing operation is interrupted for a predetermined period of time, or the instruction is given to withdraw the embroidering frame to a predetermined inoperative position, the CPU is responsive to these situations to control the X-Y moving mechanism to withdraw the embroidering frame to the predetermined inoperative position.

A sewing machine with an embroidery stitching function is disclosed, wherein a needle is vertically reciprocated to form stitches on a work held by an embroidering frame (,) which is moved in X-Y directions by a frame moving device relative to the needle on a working surface (,) of a working bed (,), the frame moving device being composed of composed of a first mechanism (A) for moving said embroidering frame in the Y direction and a second mechanism (B) for moving the embroidering frame in the X direction, the first mechanism (A) being located on the working surface and connected to the embroidering frame (,) and the second mechanism (B) being housed in the sewing machine, the first mechanism (A) being moved by the second mechanism (B) to one end of the working bed (,) where the first mechanism (A) is rotated to a retreated position at the time of carrying out the ordinary stitching operation.

Sewing machine with an embroidery stitching function

An overlock sewing machine has a movable cutter which is activated in association with rotation of a main drive shaft to cooperate with a fixed cutter provided in the same plane with an upper surface of a needle plate, to thereby cut a work while the work is being stitched. A link mechanism includes a drive link having one end rotatably connected to a mount and the other end is connected to the movable cutter and a swingable link having an arcuate guide groove extending between one end and a center axis thereof around which the swingable link is swingingly moved. The drive link has a point between opposite ends thereof operatively connected to the arcuate guide groove of the swingable link. An operating device includes an operating shaft which is operatively connected to the point of the drive shaft so that the point of the drive link may be substantially moved along the arcuate guide groove of the swingable link between said one end and center axis thereof by manipulation of an operating knob. The drive link having the point thereof moved to one end of the swingable link will be swingingly reciprocated to activate the movable cutter, and having the point thereof moved to the central axis of the swingable link will move the movable cutter to an inoperative position below the needle plate where the movable cutter is held at standstill.

Overlock sewing machine with movable cutter

A lock stitch sewing machine with an automatic thread tension adjusting device is disclosed, wherein the sewing machine has a plurality of thread tension adjusting mechanisms 7, each of which including a pair of thread tension disks 12, 13, one of which is normally pressed by a spring toward the other. A sensor 4 is responsive to the operation of a thread tension releasing lever 20 made by a user with a slight touch applied thereto to give a signal. A CPU1 is responsive to the signal to compare the value of the existing thread tension of the thread tension adjusting mechanisms 7 with a predetermined one. If the value of the existing thread tension is higher than the predetermined one, the CPU1 is operated reduce the value of the existing thread tension to a predetermined one. Thus the tension releasing operation ability is increased.

Lock stitch sewing machine with automatic thread tension adjusting device

A device for switching between normal and embroidering stitching comprises X-directional and Y-directional drive control devices for controlling movement of the embroidering stitching device in X- and Y-directions, respectively, and two stepping motors for driving a needle bar control device or the X-directional drive control device, and a feed control device or the Y-directional drive control device, respectively. Two switching elements alternatively connect the first stepping motor with either of the needle bar control device or the X-directional drive control device, and the second stepping motor with either of the feed control device or the Y-directional drive control device, respectively, to provide for normal and embroidering stitchings, respectively.

Switching device for normal and embroidery stitching in a sewing machine

An embroidering device for a sewing machine includes an embroidering frame and a first driving member to be connected with the feed dog of the sewing machine for driving the embroidering frame in a direction transverse to lateral swinging and vertical reciprocating directions of a needle bar of the sewing machine. A second driving member is connected with the needle bar support for driving the embroidering frame in the lateral swinging direction of the needle bar.

Embroidering device for a sewing machine

An embroidering machine is provided with a display section which is retractable within a machine housing and can be pulled to an operational position when in use for select/input operation. Several kinds of select/input operation can be made with a single display means, by suitably changing and selecting the display mode. Select/input operation is made by plotting an appropriate portion seen in the display, reducing to a great extent erroneous operation with a visual support.

Embroidering machines having graphic input means

An automatic pattern sewing machine includes a memory for storing blocks of data for controlling the sewing of an applique piece on a base cloth. A separate sheet of paper is printed with a set of patterns corresponding to different sizes of an applique pattern of one type and with corresponding identification marks. The applique piece is prepared in conformity with the printed pattern of the selected size and the assigned printed identification mark is entered into the machine by a selecting key to activate a coordinate transforming means which adjust the stored data to the selected size of the pattern. The applique piece is then stitched along its perimeter onto the base cloth according to the adjusted information.

Growing community of inventors

Tokyo, Japan

Yoshikazu Ebata