Source: http://www.docstoc.com/documents/legal/patents/sewing/1
Timestamp: 2014-12-25 01:48:49
Document Index: 663441485

Matched Legal Cases: ['arts 17', 'arts 19', 'arts 19', 'arts 17', 'arts 19', 'Application No. 2006', 'Application No. 2007', 'Application No. 2007', 'Application No. 2008']

Device And Method To Align The Edge Surrounding An End Of A Tubular Knitted Article - Patent 8109220
The present invention relates to a machine or device for handling tubular knitted articles, such as in particular--but not exclusively--stockings and socks. More specifically, the present invention relates to a device useful for pre-paring tubular knitted articles of the aforesaid type--which are unloaded from the knitting machine in which they are produced with the toe open--for the subsequentoperations to sew the toe.STATE OF THE ART WO-A-2005/100664 describes a complex machine, comprising a plurality of stations having the function of picking up the individual socks or other tubular knitted articles from a basket and preparing them for sewing in a sewing machine comprisinga guillotine. One of these stations has the function of aligning approximately on a plane the edge or band surrounding one of the ends of the article and more specifically the edge surrounding the open toe thereof. This station comprises an operatinghead provided with a plurality of contact members, controlled in order to selectively move toward an article inserted on a tubular support and transport member. The relative movement between the tubular member, with the tubular article inserted thereon,and the contact members is such that contact between these members and the tubular article takes place in different times according to the position of the tubular knitted article on the tubular transport member. The tubular knitted article is made toslide on the tubular transport member by the pads which gradually come into contact therewith and press it on the surface or side wall of the tubular transport member. The final result of the operation is to align approximately on a plane orthogonal tothe axis of the tubular transport member all the portions of the edge surrounding the open toe of the tubular knitted article, so that the entire band or edge surrounding the toe opening is approximately on the same plane substantially orthogonal to theaxis of the tubular member. This facilitates the su
Device and method to align the edge surrounding an end of a tubular knitted article, Magni, et al., Antonio Magni, Nerino Grassi, Application number 12 444-954, Sewing
Adjustable Threading Utensil And Structure Utilizing Shape Memory Actuation - Patent 8109219
1. Technical Field This disclosure generally relates to threading utensils, grommets, eyelets and other structures, and methods of entraining a filament within the same. More particularly, the invention relates to threading utensils, grommets, eyelets, and otherstructures that utilize shape memory actuation to selectively and reversibly adjust in geometric configuration, so as to facilitate entraining the filament, and securing the filament once entrained. 2. Background Art Threading utensils, such as needles and the like, have long been developed to facilitate sewing, knitting, and other activities wherein a filament is caused to pass through an aperture(s) or layer(s) of material. As well known in theirrespective arts, these utensils must themselves be initially entrained with the filament (e.g., thread, lace, yarn, string, cable, wire, etc.), and as such typically define an eye through which the filament is passed. Whereas the utensil must often passthrough the material or aperture in repetative manual or machine-driven strokes, conventional utensils typically present an elongated body having a minimal diameter and a tapered end section that converges to a distal point. As a result, the typical eyeis likewise of minimal width, which results in the difficult task of passing a thin flexible filament therethrough. Once entrained within the eye, the filament is secured to prevent unwanted withdrawal by doubling it over, twisting, tying a knottherein, or an otherwise method. Similarly, eyelets (e.g., grommets, and other aperture forming structures) commonly compose articles of manufacture, and help define neatly tailored apertures of fixed geometric shape and dimension. For example, it is appreciated that manyarticles of clothing (e.g., corsets, etc.) and shoes feature a plurality of eyelets adapted to receive a lace. Like the eyes of the afore-mentioned utensils, however, threading eyelets have often proved difficult due to their typically small size, andon
Adjustable threading utensil and structure utilizing shape memory actuation, Browne, et al., Alan L. Browne, Nancy L. Johnson, Jan H. Aase, Application number 12 331-350, Sewing
Apparatus And Method For Producing Large Stitched Products - Patent 8104414
The invention relates to an apparatus for producing large stitched products, especially multi-layered stitched products, preferably rectangular mattress panels, said apparatus consisting of a multiple-needle stitching unit, preferably a multiple needlechain stitch sewing machine, a storage device for the layers of the product to be stitched which is connected upstream of the multiple needle stitching unit, and a processing station which is connected downstream of the multiple needle stitching unit,for stitched products, wherein the multiple needle stitching unit has a large number of stitching elements, especially needles and oppositely arranged hooks, each of which cooperating with a needle, and a guide device for the products to be stitched,which guide device is arranged in the region of the stitching elements and can be moved in relation to the stitching elements in a direction substantially perpendicular to the conveying direction of the stitched products, and wherein the processingstation which is connected downstream is configured especially as a cutting device and/or a winder device, by means of which the stitched products are cut and/or wound at least in the conveying direction. The invention further relates to a method forproducing large and especially multi-layered stitched products, preferably rectangular mattress panels, in which method the product to be stitched is fed to a multiple needle stitching unit, preferably a multiple needle chain stitch sewing machine, andis stitched within said multiple needle stitching unit in such a way that the product to be stitched is arranged in a guide device and is moved in relation to a large number of stitching elements, especially needles and oppositely arranged hooks, each ofwhich cooperating with a needle, before the stitched product is fed to a processing station which is connected downstream of a multiple needle stitching unit and in which the stitched product is preferably cut and/or wound at least in the con
Apparatus and method for producing large stitched products, Stutznacker, et al., Klaus Stutznacker, Christian Sturm, Application number 11 988-816, Sewing
Camless Automated Thread Cutting System For Electronic Lockstitch Pattern Tacking Sewing Machines - Patent 8104413
This invention relates to sewing machines and more particularly to thread cutting systems for lockstitch sewing machines. The invention is especially suited for electronically controlled lockstitch pattern tacking sewing machines. Pattern tacking sewing machines are well known in which a thread cutting system employs a cutting cam and a cam follower mechanically connected to a cutting knife mechanism to cut the thread at the end of a sewing cycle, i.e., after a givenpattern has been completed by the machine. Such machines have several disadvantages, including difficulty of adjustment for different jobs, which have not been fully overcome.SUMMARY OF THE INVENTION The present invention is a camless cutting system. The system controls a cutting knife mechanism with a pneumatic actuator, e.g., a pneumatic cylinder. The system controls the thread cutting or trimming sequence with a pair of adjustable bandsor discs mounted on the main shaft or spindle of the sewing machine so as to rotate therewith and operatively coupled to a proximity sensor which supplies an electrical signal to an electronic controller such as a programmable logic controller (PLC). The electronic controller responds to a machine signal indicative of the end of a sewing cycle and to a signal from the proximity sensor to provide a control signal to an electrically actuated valve such as a solenoid-actuated air valve which suppliesair pressure to the pneumatic actuator which drives the knife mechanism. The objects and advantages of the present invention will be more apparent upon reading the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of a first embodiment of a camless cutting system according to the present invention, illustrated in operative association with an electronic lockstitch pattern tacking sewing machine having a sewing needle and an associatedknife mechanism for cutting thread at the end of a pattern
Camless automated thread cutting system for electronic lockstitch pattern tacking sewing machines, Rodriguez, Felipe Rodriguez, Application number 12 431-454, Sewing
Flat Seam Construction - Patent 8100070
The present invention relates to the field of seam constructions, and more specifically, to a flat seam construction for use in joining portions of automotive seat covers.BACKGROUND OF THE INVENTION Automotive seating arrangements generally comprise an inner core constructed from a resilient foam material and a soft trim cover. The cover is usually formed from a number of parts stitched to each other by seams along join lines. The threadsof the seams are typically adapted to attach to portions of the foam core, thereby holding the cover in a fixed position with respect to the foam core. The seam construction on automotive seating arrangements is typically carried out using either a Deck seam construction, or a French seam construction. An example of a Deck seam construction 15 is shown in FIG. 1. As shown therein, adjacentcover parts 17 and 19 are aligned along an edge 21 of each cover part, and placed with the outer surfaces of each cover part in mutual abutting contact. An overlapping margin region is thereby defined, and a first stitch line 23 applied, generallyspaced from, and extending generally parallel to the aligned edge. This arrangement creates two seam flaps 25 and 27 which are then folded underneath one of the cover parts 19, and a second stitch line 29 is applied with the overlapping margin regionand transverse to a top surface of the cover parts, to affix the seam flaps 25 and 27 underneath one of the cover parts 19. Thus, a two-part seam creation process is required, wherein the first stitch line 23 joins two adjacent cover parts 17 and 19,and a subsequently applied stitch line 29 adjoins the seam flaps 25 and 27 underneath one of the cover parts 19, providing a decorative finish to the seam construction. An example of a French seam construction 30 is shown in FIG. 2. As seen therein, a French seam construction 30 is similar to the Deck seam construction 15, except that respective seam flaps 32 and 34 are folded underneath corresponding cover
Flat seam construction, Boinais, et al., Olivier Boinais, Yelena Gonopolskaya, Lola Lafferty, Leonardo Lacenda Gomes, Etienne Poulet, Application number 12 535-995, Sewing
Threader Of Sewing Machine - Patent 8100068
TECHNICALFIELD The present invention relates to a threader of a sewing machine that performs a threading operation into a needle hole using a hook portion that is disposed at the lower end portion of a threading shaft, by lowering and rotating the threadingshaft arranged near a needle bar.BACKGROUND ART Conventionally, in a sewing operation that sews in a processed fabric using a sewing machine, a sewing machine comprising a threader that can easily perform a threading operation into a needle hole of a sewing needle has been put into practice(see JP 2005-160592A and JP 2002-200386A). For example, in JP 2005-160592A, when an operator lowers a threading lever, a threading shaft and a slider guide shaft are lowered, and the height positions of the threading shaft and the slider guide shaft areregulated when a slider pin at the upper end portion of the threading shaft is brought into contact with a catching portion on the side of a needle bar. Subsequently, when the threading lever is further lowered, the threading shaft comprising the sliderpin is rotated by a predetermined angle by a cam mechanism including a slider pin, a hook that is disposed at the lower end portion of the threading shaft is inserted into a needle hole, and then the threading operation is performed. However, in JP 2005-160592A, it is necessary to manually place a thread over the hook, and, thus, there is a problem in that the operator has to use both hands to perform a threading work. Thus, in JP 2002-200386A, a top thread taken from abobbin is placed at a predetermined position in the sewing machine and, when the operator lowers the threading lever, the height positions of a threading shaft and a slider guide shaft are regulated when a slider pin at the upper end portion of thethreading shaft is brought into contact with a catching portion on the side of a needle bar. Subsequently, when the threading lever is further lowered, the threading shaft comprising the slider pin is rotated by a predete
Threader of sewing machine, Suzuki, Yoshikazu Suzuki, Application number 12 524-155, Sewing
Control Device Of Sewing Machine - Patent 8100069
The present invention claims priority from Japanese Patent Application No. 2006-240555 filed on Sep. 5, 2006, the entire content of which isincorporated herein by reference.TECHNICAL FIELD The present invention relates to a control device of a sewing machine which is operable to carry out a buttonholing sewing with a pressing member having a pressing frame slidable in a cloth feeding direction.BACKGROUND ART A domestic sewing machine, which carries out a buttonholing sewing, employs a buttonholing device capable of changing a length of a buttonhole to be formed in accordance with a size of a button (see, e.g., JP 3151923 B2). As shown in FIG. 16, in a buttonholing device 100, a pressing member 101 having a pressing frame 102 slidable in a cloth feeding direction is attached to a lower end of a pressing bar. A spiral spring 103 is provided in a hollow stopper 102afixed to an upper end surface, in a direction A, of the pressing frame 102. A starting position of the sewing is set such that the pressing member 101 abuts against the stopper 102a due to an elastic force of the spiral spring 103 which is constantlybeing applied thereto. An end portion, in a direction B, of the pressing frame 102 is provided with a button holding device 104 having a holding portion 104a which is slidable in the cloth feeding direction in accordance with a size of a button to be held between afixed holding portion 104b and the holding portion 104a. The pressing member 101 is provided with a potentiometer 105 extending in the cloth feeding direction on an outer side of the pressing frame 102, and the holding portion 104a is provided with a detecting portion 106 which contacts with thepotentiometer 105. The potentiometer 105 includes a variable resistor. As shown in FIG. 16, when the pressing frame 102 is moved, a position in which the detecting portion 106 and the potentiometer 105 come in contact with each other is changed so thata resistance value changes. Based on a voltage value app
Control device of sewing machine, Asaba, et al., Yutaka Asaba, Yasunori Ishii, Sen Mizuhara, Application number 11 896-555, Sewing
Sewing Machine With Large Stitch Width - Patent 8100071
S This application claims priority to Swedish patent application 0602529-0 filed 28 Nov. 2006.FIELD OF THE INVENTION The present invention relates to a sewing machine which has a horizontally disposed lower bobbin with a device and a method for control of the machine so that an increase in the stitch width can be achieved as compared with conventional sewingmachines of a corresponding type.BACKGROUND OF THE INVENTION There are currently on the market a number of appliances with different configurations for forming lock stitches in order to produce a seam in a piece of material being sewn, said piece of material hereinafter referred to for the sake ofsimplicity as fabric. Ordinary domestic sewing machines conventionally involve the use of an upper thread and a lower thread on a bobbin which in cooperation with a needle causes the upper thread to execute a lock stitch in the fabric being sewn in thesewing machine. Sewing machines of the lock stitch type have since a long time been part of the state of the art and their mode of operation is well-known. Taking, for the sake of simplicity, a sewing machine with a single needle as an example, such a machineforms stitches by the upper thread and the lower thread being linked together by the needle moving to and fro through a fabric which is moved forward across a sewing table, which is usually in a plane substantially perpendicular to the length of theneedle. Most conventional sewing machines of this kind have a take-up lever which pulls the upper thread from an upper thread storage bobbin. The take-up lever provides the needle with the upper thread by an oscillating movement towards and away fromthe fabric. The expression "upper" hereinafter means the side of the fabric where the needle is housed. "lower" means the side of the fabric where the making of a knot is effected. Also, the expression "thread" hereinafter always means "upper thread"unless otherwise indicated. When the take-up lever is in its highest posit
Sewing machine with large stitch width, Janeke, et al., Rolf Janeke, Fredrik Berglund, Lars Roos, Application number 11 878-251, Sewing, Data Processing:Generic Control Systems Or Specific Applications
System And Method For Tufting Multiple Fabrics - Patent 8096247
The present invention generally relates to tufting carpets and other fabric products, and in particular to a system and method for tufting different products in different zones or sections of a tufting machine.BACKGROUND OF THE INVENTION Carpets and other tufted articles generally are formed by passing a backing material through a tufting machine in which a series of needles are reciprocated so as to deliver tufts of yarn into the backing material. Over the years, tuftingmachines have been further developed and provided with various enhancements designed to produce new and more varied pattern effects, such as cut and loop pile patterns, shifting needle bar patterns, as well as producing different tufted fabrics, such assynthetic or artificial grass turf products and patterned rugs. A problem that exists, however, with the formation of specialty products such as carpet tiles and narrower or smaller rugs or carpets, is that such products often typically are run on specialty machines that are smaller in size, which can limitproduction rates. Running such products on larger, full-sized tufting machines also can require additional operations to separate or form the tiles or rugs from the full-sized tufted fabrics, and generally limits the type of patterns that can be formedacross the width of the tufted fabrics to a single pattern. Therefore, it can be seen that a needs exists for a system and method for forming tufted carpets and other, similar tufted fabrics that addresses the foregoing and other related and related problems in the art.SUMMARY OF THE INVENTION Briefly described, the present invention generally is directed to a system and method for tufting or otherwise forming multiple tufted fabric articles or products, such as carpets, including tufted fabrics having different patterns or patterneffects, which patterns can be formed at substantially the same time utilizing a single tufting machine. The tufting machine generally will include a frame, with two or m
System and method for tufting multiple fabrics, Monroe, et al., Charles F. Monroe, Marshal Allen Neely Jr., William M. Christman Jr., Application number 12 260-213, Sewing, Data Processing:Generic Control Systems Or Specific Applications
CROSS-REFERENCE TO RELATEDAPPLICATION The present application claims priority from Japanese Patent Application No. 2007-324624 filed on Dec. 17, 2007, the entire content of which is incorporated herein by reference.FIELD OF INVENTION The present invention relates to a thread tensioning device of a sewing machine which can adjust a tensional force of each of a plurality of threads.DESCRIPTION OF RELATED ART For example, in an overlock sewing machine, a plurality of threads to be inserted through a needle, an upper looper, and a lower looper are combined and used according to a type of stitch such as an over-edge chainstitch or a covering stitch. Therefore, a thread tensioning device is provided in which a thread tensioner including a pair of thread tensioning plates for sandwiching a thread and springs for applying sandwiching pressures to the thread tensioning plates is provided for eachthread. For example, the thread tensioning device described in U.S. Pat. No. 5,265,548 is configured so that spring pressures of the thread tensioners are set according to an operation for selecting a type of stitch so as to use reference tensionalforces which are set in advance for the respective threads according to the type of stitch such as an over-edge chainstitch or a covering stitch, etc., to the respective threads to be used. Further, fine adjustment mechanisms are provided which can change the spring pressures of the thread tensioners so as to finely adjust tensional forces to be applied to the threads by the respective thread tensioners from the reference tensionalforces when expected seam quality cannot be obtained due to the reference tensional forces. When the type of stitch is changed to another type of stitch, the thread tensioners are set so as to apply reference tensional forces corresponding to the newly selected type of stitch to the threads. In this case, the fine adjustmentmechanisms changed for fine adjustment must be reset to the initial state. Therefore,
Threading tensioning device of sewing machine, Takeshita, Koji Takeshita, Application number 12 335-945, Sewing
Embroidery Data Processing Apparatus, Embroidery Sewing Machine And Computer-readable Recording Medium With Recorded Embroidery Data Processing Program - Patent 8096248
The present application claims priority to Japanese Patent Application No. 2007-075755, filed on Mar. 23, 2007, the entire disclosure of which is incorporated herein by reference in its entirety.BACKGROUND The present disclosure generally relates to an embroidery data processing apparatus, an embroidery sewing machine, and a computer-readable recording medium storing embroidery data processing program. More particularly, the present disclosurerelates to processing the embroidery data in which a setting for boring can be made. Conventionally, a technique (eyelet embroidering) has been available for embroidering by use of an embroidery sewing machine, by sewing an embroidery around a cut (hole) in a piece of work cloth. Such a cut has been formed by attaching to thelower end of a needle bar, a boring apparatus that is fitted with a boring knife that has a cutting tooth formed at its tip, and by inserting the boring knife through a piece of work cloth sandwiched between a pair of embroidery frames that feed thepiece of work cloth (see, for example, Japanese Utility Model Application Laid-Open Publication No. SHO 63-81888). The specific position of such a cut by a boring knife is performed by a method of setting the number of a needle bar fitted with theboring apparatus and then by incorporating a setting for the specific boring data into sewing data of a boring-specified sewing order.SUMMARY However, if the embroidery data contains a plurality of sewing procedures for a boring-specified sewing order, the aforementioned boring setting method has been troublesome because it requires setting the specific boring data for each of thosesewing procedures. To address those problems, the present disclosure has been developed, and it is an object of the present disclosure to enable a one time setting of the boring data for each of a plurality of sewing orders. To address the above problem, a first aspect of the present disclosure provides an embroidery data processing appar
Embroidery data processing apparatus, embroidery sewing machine and computer-readable recording medium with recorded embroidery data processing program, Kishi, Motoshi Kishi, Application number 12 076-330, Sewing
Rotary Hook Drive Device And Multi-head Sewing Machine - Patent 8096249
BACKGROUND The present invention relates generally to rotary hook drive devices for sewing machines including a pivoting-type loop catcher called a "semi rotary hook", and particularly to multi-head sewing machines (embroidery sewing machines and othertypes of sewing machines) including a plurality of sewing heads and a plurality of hook drive devices provided in corresponding relation to the sewing heads. The rotary hooks, which are means for catching a lower thread in a sewing machine, come in two major types: a full rotary type; and a semi rotary type. The semi rotary (type) hook is used, for example, when a thick sewing work piece is to besewn. Japanese Patent Application Laid-open Publication No. 2001-104671 (hereinafter referred to as "patent literature 1") discloses a semi rotary hook drive mechanism, where a single common drive shaft is rotatably supported by individual hook supportmembers. The drive shaft is connected in such a manner that its driving force is transmitted to the semi rotary hooks within the individual hook support members. The drive shaft is also connected to a main shaft of the sewing machine via a driveconversion mechanism, so that it reciprocatively pivots within a predetermined angular range as the main shaft of the sewing machine pivots in one direction. Such reciprocating pivotal movement of the drive shaft causes respective rotary hook shafts toreciprocatively pivot so that the semi rotary hooks pivot. According to the disclosure of patent literature 1, the drive shaft provided in common to the individual hook support members is caused to reciprocate pivotal movement in forward and reverse directions. Therefore, in a case where many machineheads are employed and thus the drive shaft has a large length, and when the direction of the pivotal movement of the drive shaft is changed, great torsion would be produced in a free end portion, remote from the drive conversion mechanism, of the driveshaft due to rotational inertia; consequ
Rotary hook drive device and multi-head sewing machine, Tajima, et al., Ikuo Tajima, Yoichi Mizuguchi, Taichi Fukushima, Application number 12 488-243, Sewing
Sewing Machine, And Computer-readable Storage Medium Storing Sewing Machine Control Program - Patent 8091493
This Application claims priority from JP 2008-013418, filed on Jan. 24, 2008, the content of which is hereby incorporated herein by reference in its entirety.BACKGROUND The present disclosure relates to a sewing machine and a computer-readable storage medium storing a program that controls the sewing machine and, more particularly, to a sewing machine equipped with an image pickup device and a computer-readablestorage medium storing a control program that controls the sewing machine. Conventionally, for a variety of purposes, a sewing machine has been proposed which is equipped with an image pickup device. For example, in an embroidery data modification apparatus described in Japanese Patent Application Laid-OpenPublication No. HEI 4-364884, an electronic camera is equipped on a sewing machine that performs sewing based on embroidery data. An image photographed with the electronic camera is utilized to modify the location of a needle drop point for a stitch inaccordance with actual sewing results. Generally, in the case of acquiring and utilizing the location (coordinates) of a photography subject by an image photographed with a camera as in the case of measurement by use of an air photo, the camera will becalibrated in order to grasp a precise location of the photography subject based on the image. Camera calibration involves the calculation of an internal parameter which is determined by a configuration of the camera such as a focal distance or aprincipal point coordinate and an external parameter which is determined by a condition in which the camera is set up such as its photographing direction. With the parameters calculated through camera calibration, it is possible to know a location in atwo-dimensional coordinate system (photographed image) at which a point (real photography subject) in a three-dimensional coordinate system should be projected. Therefore, if a point in the photographed image is projected precisely with the parameters,a precise locati
Sewing machine, and computer-readable storage medium storing sewing machine control program, Tokura, Masashi Tokura, Application number 12 320-337, Sewing, Data Processing:Generic Control Systems Or Specific Applications
Thread Cutter For Sewing Machine - PDF
S This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2008-27685, filed on Feb. 7, 2008, the entire contents of which are incorporated herein by reference.BACKGROUND 1. Technical Field The present disclosure relates to a thread cutter for a sewing machine, which is provided on an underside of a needle plate having a needle hole and cuts needle and bobbin threads located between a workpiece cloth and a rotary hook including anouter rotating hook and an inner bobbin case. 2. Description of the Related Art Conventional sewing machines have been provided with thread cutters. The thread cutter is provided on an underside of a needle plate having a needle hole and cuts needle and bobbin threads located between a workpiece cloth and a rotary hookincluding an outer rotating hook and an inner bobbin case. For example, Japanese patent application publication JP-A-H03-210298 (hereinafter referred to as "related art document 1") discloses a thread cutter of the above-described type, in which athread cutting cam mounted on a lower shaft of a sewing machine is actuated by a sewing machine motor so that a moving blade is driven. The moving blade and a fixed blade are caused to cooperate with each other thereby to cut needle and bobbin threads. The thread cutter disclosed by related art document 1 is provided with the moving and fixed blades as a cutting blade, and the moving blade is driven by the sewing machine motor to be caused to cooperate with the fixed blade. As a result, the threadcutter has a complicated construction. In order to overcome the complicated construction, Japanese patent application publication JP-2003-284878 (hereinafter referred to as "related art document 2") discloses another thread cutter for a sewing machine. The thread cutter disclosed byrelated art document 2 includes a stepping motor serving as a dedicated drive source for driving a thread seizing assembly. The thread cutter further
Thread cutter for sewing machine, Niizeki, et al., Tomoyasu Niizeki, Yoko Totsu, Hiroaki Fukao, Application number 12 320-762, Sewing
Needle Threader For Sewing Machine - Patent 8087366
This application is based upon and claims the benefit of priority from the prior Japanese Patent ApplicationNos. 2008-009315 and 2008-009316 both filed on Jan. 18, 2008, the entire contents of which are incorporated herein by reference.BACKGROUND 1. Technical Field The present disclosure relates to a needle threader for a sewing machine, which is provided in a head of a sewing machine body for threading a sewing machine needle mounted on a lower end of a needlebar by causing a needle thread from a needlethread supply to pass through an eye of the needle. 2. Description of the Related Art Needle threaders of the above-described type have conventionally been known. For example, Japanese patent application publication JP-A-2002-200387 discloses a needle threader provided with a threading shaft that is located near or on the leftof a needlebar so as to be vertically movable and pivotable. The threading shaft has a lower end provided with a threading hook and first and second thread guide members both holding a needle thread. The needle threader further comprises a pivotmechanism pivotally moving the threading hook horizontally and a lifting mechanism moving the threading shaft vertically upon operation of an operation lever by the user. The threading shaft and accordingly the threading hook and the thread guide members are movable vertically between a standby position that is an uppermost position and a threading position that is a lowermost position where the threading hook islevel with an eye of a sewing needle. The threading shaft is usually urged to the standby position (upward) by a spring or the like. In the sewing machine, the needlebar is stopped at a predetermined upward position (needle upper position) relative tothe sewing machine head. The aforesaid standby position of the needle threader is set at a predetermined height suitable for execution of the setting of a needle thread (just on the left of a needle clamp). When a threading operation is car
Needle threader for sewing machine, Fujihara, Shinya Fujihara, Application number 12 320-056, Sewing