Source: http://www.docstoc.com/documents/legal/patents/sewing/2
Timestamp: 2015-04-01 08:14:13
Document Index: 281084389

Matched Legal Cases: ['art 131', 'art 131', 'art 131', 'Application No. 2008', 'application No. 07', 'Application No. 2008']

Indicia And Method For Piercing Patchwork Quilts - Patent 8087368
1. Field of the Invention The present invention relates to quilted craft articles, and, more particularly, to equipment and methodology for making patchwork quilts that are accessible and practicable for home hobbyists. 2. Background Art Quilting is deeply engrained as a traditional craft and folk art form in many cultures throughout the world. In America, quilting became a popular craft during the westward migrations of the 19.sup.th Century, when quilting circles and quiltingbees provided an enjoyable social pastime for women. Handmade quilts, often created as gifts for weddings or births, became family heirlooms, handed down from one generation to another. Such quilts would frequently form a mosaic of the quilter's lifeby incorporating swatches of material having sentimental value, such as patches from a bridal gown or a baby garment. Beyond the functionality of the quilt, there is an aesthetic dimension, which offers almost limitless potential for self-expression. Therefore, the decorative patterns and designs according to which elements of the quilt are assembled are ofcentral importance. Because of the strongly traditional character of quilting, new designs often evolve from pre-existing patterns, in the usual manner of folk art. It follows that quilting techniques emphasize both reproducibility and variability as ahighly desirable features. A quilt comprises two or more layers of material joined together by stitching. A typical quilt has three layers: (1) a quilt top, which incorporates a decorative pattern, (2) a middle layer of batting or wadding, which consists of an insulatingmaterial, such as cotton or wool, (3) a backing layer, to which the quilt top and the batting are sewn. The quilt top may be patchwork, i.e., comprising multiple pieces of fabric sewn together to make a decorative pattern, or whole-cloth, in which asingle piece of fabric has a decorative pattern applied by stitching, applique and/or embroidery. For patchwork quilts, the qu
Indicia and method for piercing patchwork quilts, Raimondo, Paula Raimondo, Application number 12 232-938, Sewing
S This application is based upon and claims the benefit of priority from the prior Japanese Patent Application 2008-034565, filed on Feb. 15, 2008, the entire contents of which are incorporated herein by reference.FIELD The present disclosure relates to a sewing machine capable of sewing a workpiece cloth manually moved in free motion and a computer readable medium storing a control program for carrying out the free motion sewing operation.BACKGROUND Sewing machines have conventionally allowed execution of a utility sewing operation and a so called free motion sewing operation. In the utility sewing operation, a feed dog provided inside a sewing machine bed is moved back and forth to feed aworkpiece cloth. In the free motion sewing operation, on the other hand, a user is allowed to manually move the workpiece cloth freely while keeping the feed dog lowered below a needle plate provided on the upper surface of the sewing machine bed. Oneof the disadvantages of the free motion sewing operation is that it produces poor looking stitches when the stitch pitch is inconsistent and misaligned. Formation of neat looking stitches with consistent or uniform stitch pitch requires a high degree oftechnical maturity on the part of the user. JP 2002-292175 A discloses a sewing machine having an arm provided with a needle bar and a downwardly-oriented image sensor for capturing images of sewing operation. The needle bar extends downward from the extreme end of the arm and has sewingneedle attached to it. The disclosed sewing machine executes free motion sewing operation by allowing a user to freely move a workpiece cloth placed on the upper surface of the sewing machine bed in manually adjusted feed amounts. Some of the imagescaptured by the image sensor during the free motion sewing operation are taken into a microcomputer provided in the sewing machine as static images at predetermined time interval. By comparing the latest static image with the static image immediatelyp
Sewing machine and computer readable medium storing sewing machine control program, Hirose, et al., Hirokazu Hirose, Akie Ukai, Yoshio Nishimura, Yoshinori Nakamura, Masaki Shimizu, Kazumi Sai, Satoru Makino
1. Field of the Invention This invention relates to a sewing machine, more particularly to a stationary thread-cutting device for a sewing machine, which guides and cuts a bobbin thread adjacent to a front side edge of a needle plate. 2. Description of the Related Art In U.S. Pat. No. 7,021,226 B2, the applicant disclosed a sewing machine 1 as shown in FIGS. 1 and 2. The sewing machine 1 includes a needle plate 13 with a cutout part 131 which opens at a lateral edge 132, and a guide plate 14 connected to abottom side of the needle plate 13 and extending across the cutout part 131. The guide plate 14 has two slide rails 141, an opening 142 corresponding in position to a bobbin holder 11 that holds a bobbin 17, and an arc-shaped thread guiding slot 143having one end communicated with the opening 142 and another end extending to one of the slide rails 141. A slide cover 15 covers the cutout part 131 and is slidable along the slide rails 141. A thread guiding groove 12 is disposed along one of theslide rails 141 adjacent to the arc-shaped thread guiding slot 143, and has one end connected to the thread guiding slot 143 and another end extending to the lateral edge 132 of the needle plate 13. A cutter 16 includes a cutter blade 161 which is fixedto the bottom side of the needle plate 13 proximate to the lateral edge 132 and the thread guiding groove 12, and which extends across a cutter groove 133 formed in the lateral edge 132. Since the cutter 16 is mounted at the lateral edge 132 of the needle plate 13, when it is desired to obtain an appropriate length of bobbin thread for interlacing with a needle thread (not shown) for stitching a fabric piece, bobbin thread isdrawn from the bobbin 17 held in the bobbin holder 11, is passed through the thread guiding slot 143, a thread tensioning unit (not shown) mounted on the bobbin holder 11, and the thread guiding groove 12, and is pulled into the cutter groove 133 forcutting by the cutter blade 161. However, since t
Stationary thread-cutting device for a sewing machine, Tseng, et al., Shui-Chun Tseng, Chi-Chang Lan, Application number 12 479-172, Sewing
Presser Foot And Sewing Machine - Patent 8082863
S This Nonprovisional application claims priority under 35 U.S.C. .sctn.119(a) on Patent Application No. 2008-241581 filed in Japan on Sep. 19.2008, the entire contents of which are hereby incorporated by reference.BACKGROUND 1. Technical Field The present invention relates to a presser foot of a sewing machine which is used for seaming two fabrics while overlapping ends of the two fabrics over a predetermined width, and a sewing machine provided with the presser foot. 2. Description of Related Art For example, the seaming of a crotch portion of a brief and shorts is executed by using a sewing machine provided with a narrow tubular bed. The seaming is executed in accordance with a procedure of overlapping up and down two fabrics insertedthrough the tubular bed over a predetermined width from edges of respective ends, feeding them to a needle drop position while pinching them between a needle plate provided in an upper surface of the tubular bed and a presser foot moving down onto theneedle plate, and seaming them by a needle moving down to the needle drop position. In order to execute the seaming properly, it is important to keep the overlapped width of the fabrics to be fed to the needle drop position proper. A sewing machine described in Examined Japanese utility Model Publication No. 59-344577 (1984)is provided with a special presser foot having a knife portion cutting ends of fabrics to be seamed and a guide portion (an upper guide and a lower guide) guiding the fabrics cut by the knife portion and overlapping them up and down. FIG. 1 is a perspective view showing the vicinity of a needle drop position of a conventional sewing machine provided with the presser foot having the knife portion and guide portion. As shown in FIG. 1, a presser foot 1 is attached to a lowerend of a presser bar 10 which is supported by an end portion of a sewing machine arm 2. The presser foot 1 is provided with a presser body 11 fixed to the lower end of the presser bar 10, and
Presser foot and sewing machine, Kinoshita, Ryuichiro Kinoshita, Application number 12 562-642, Sewing
Sewing Thread Spool Having Thread Locking And Cutting Functions - Patent 8082864
1. Field of the Invention The present invention relates to a sewing thread spool, and more particularly to a sewing thread spool having thread locking and cutting functions. 2. Related Art A traditional sewing thread spool only has thread winding and supplying functions. It cannot fix an end of a thread when storing the thread. Thus, the ends of the thread end in a tangle each time the sewing thread is used. Repeated tangle ofthe thread ends causes waste of material and time. There is also developed, a sewing thread spool with a clipping notch on an edge of an outer rim of a sewing thread spool. While such a spool appears to solve the above-mentioned thread end fixingproblem to some extent, the clipping notch on the edge of such a thread spool tends to accidentally shave off a sewing thread that is in use, and the thread spool has to then be pulled or the thread is cut off with any other tool, making the thread spoolinconvenient for a user to operate.SUMMARY OF THE INVENTION The object of the present invention is to provide a sewing thread spool having thread locking and cutting functions, so as to solve the technical problems with the above-mentioned prior sewing thread spool, i.e., the accidental shaving off ofthe thread in use, requiring the pulling or cutting of the thread end with another tool. To resolve the technical problem mentioned above, the present invention provides a sewing thread spool having thread locking and cutting functions. The sewing thread spool comprises a spool and a thread cutting plate arranged on a plane end ofthe spool; wherein the bobbin comprises a thread-passing notch arranged at the end with the thread cutting plate; and the thread cutting plate comprises a first and a second bayonet sockets separated from each other; the first bayonet socket cooperatingwith the thread-passing notch to produce a tension in a thread, and the second bayonet socket being used for cutting the thread and fixing or locking the thread end. In the s
Sewing thread spool having thread locking and cutting functions, Nich, Jem Nich, Application number 12 049-246, Sewing
Apparatus And Method For Forming Level Cut And Loop Pile Tufts And Related Fabrics - Patent 8082861
The present invention relates to the manufacture of tufted fabrics and particularly to the use of a gated hook apparatus cooperating with a first row of needles in combination with loopers cooperating with a second row of needles, to producenovel fabrics.BACKGROUND OF THE INVENTION In the field of tufting carpets, it has been known to tuft carpets having spaced rows of looped pile and cut pile tufts. A variety of techniques have been utilized to obtain cut and loop pile tufts in the same carpet pattern. For example, U.S. Pat. No. 3,919,953 discloses an apparatus and method for tufting spaced rows of loop pile and cut pile tufts formed in the backing material using a multi-needle tufting machine having two transverse rows of needles with each row cooperating with aseries of loop pile loopers or cut pile loopers. A variety of techniques have also been developed to form cut pile and loop pile stitches in the same row, as for instance by utilizing spring clips permitting loops of yarn to be withdrawn from a looper by backrobbing as described in U.S. Pat. Nos. 3,084,465; 4,155,319; and 4,522,132. A similar result has also been obtained through the use of pusher devices as in U.S. Pat. No. 4,320,711 to selectively push loops off the loopers before the loops are cut. Level cut and loop pile has also been formed in the same rows of stitches as in U.S. Pat. Nos. 4,134,347; 4,185,569; 6,155,187 and 7,222,576 utilizing a gate structure. Gates are selectively opened and closed to promote passage of selectedloops into the knife blade cooperating with the looper or hook. The improvements to the design of Card, U.S. Pat. No. 3,199,953 have been numerous. The style of carpet created by this design is variously referred to as Precision Cut/Uncut.TM. or Velva Loop.TM.. An initial improvement to this machinedesign having separate cutting and looping systems under the backing fabric, was the addition of a pattern yarn feed attachment to the yarns being fed to the need
Apparatus and method for forming level cut and loop pile tufts and related fabrics, Lovelady, et al., Brian K. Lovelady, Michael L. Kilgore, Application number 12 201-863, Sewing
CROSS REFERENCE TO RELATED APPLICATION This application claims the priority of European patent application No. 07 002 185.2 filed Feb. 1, 2007, the subject matter of which, in its entirety, is incorporated herein by reference.BACKGROUND OF THE INVENTION The invention relates to a gripper for a tufting machine, in particular to a gripper for the production of so-called "cut-loop pile", also referred to as cut pile. Tufting machines are used, for example, for the production of carpets/carpeting. In most cases, said machines comprise a table, above which a needle bar is arranged. This needle bar bears a plurality of tufting needles that are disposed topunch a pile thread through the textile support material that is intermittently transported across the table, said support material being referred to as the backing. A bar provided with grippers is provided under the table. With each punch of thetufting needles, the grippers insert loops formed of the tufting threads and hold said loops in place underneath the backing. In order to produce cut pile, knives are provided, said knives being held on a knife bar. These knives are moved toward thegrippers and cut the loops held on said grippers. Usually, appropriate grippers that are provided for the production of cut pile have a cutting insert that acts as a counterpart to the knife. Such a counterpart has been disclosed, for example, by document DE 23 41 567 A1 or also by document DE28 23 408. In so doing, the gripper, in each case, consists of a flat gripper body that has a cutout for a cutting insert. The cutting insert consists of hard metal. A solder connection is used to secure said insert to the gripper body. The hard metal insert and the gripper body display different wear resistance properties as well as different stiffness and thermal expansion properties, which can lead to problems. Considering this, it is the object of the invention to produce an improved gripper for tufting machines.SUMMARY OF THE INVENT
Gripper for a tufting machine, Hillenbrand, et al., Bernd Hillenbrand, Timo Kaas, Klaus Kirchmair, Andrea Maute, Application number 12 076-441, Sewing
The present invention relates to a sewing machine, and more particularly to a sewing machine that enables skipping a stitch during the sewing work.BACKGROUND OF THE INVENTION Conventionally, sewing machines that enable skipping a stitch during the sewing work have been widely known. An example of those sewing machines can be found in the patented document 1. The sewing machine according to the patented document 1has the following structure. The sewing machine includes a needle bar, having an engaging member (engaging device) provided at an upper portion thereof and disposed so as to vertically reciprocate with respect to a head frame; and a carriage set to be driven by a main shaftand to vertically reciprocate parallel to the needle bar; and the carriage is provided with a latching element (latching portion) which is set to move between an engaging position where the latching element can be engaged with the engaging member and aretreated position where the latching element is not engaged therewith, and which is constantly subjected to a biasing force applied in a direction toward the engaging position from the retreated position, so that the latching element normally remainsengaged with the engaging member of the needle bar, to thereby cause the needle bar to vertically reciprocate with the vertical reciprocating motion of the carriage. The sewing machine also includes an operating mechanism (skipping mechanism) including a solenoid with a rotating shaft set to reciprocatively rotate and to be driven in one direction when power is supplied to the solenoid; and an engagingportion (operating member) radially spaced from the rotating shaft of the solenoid and connected to the rotating shaft of the solenoid, so as to circumferentially rotate with the rotation of the rotating shaft of the solenoid; and the engaging portion isengaged with the latching element provided on the carriage when power is supplied to the solenoid, to thereby allow the latching element to reced
Sewing machine, Kasugai, Keisuke Kasugai, Application number 12 422-645, Sewing
S This application is based upon and claims the benefit of priority from the prior Japanese Patent Application 2007-134973, filed on May 22, 2007, the entire contents of which are incorporated herein by reference.FIELD The present disclosure relates to the art of sewing machine control, and more specifically to controlling components of a sewing machine based on settings preset in either of user modes classified by user technical maturity.BACKGROUND An electronic zigzag sewing machine such as a lock-stitch sewing machine conventionally offers standard equipment of functions such as needle swinging, sewing speed control, slow start, and display settings; where the needle swinging functionswings a sewing needle by swinging a needle bar, the sewing speed control function allows change in sewing speed, the slow start function decelerates the sewing speed at sewing start, and the display settings allows modification of settings such as sizeof characters displayed in messages, and the like, on a liquid crystal display. For instance, the pattern sewing machine described in JP H10-286384 A (pages 5 to 7, FIGS. 7 and 8), keeps track of count of user operation of each function key provided for selection of a sewing pattern in the pattern selection process. Thecount of user operation is represented by operation count I which is incremented every time the corresponding function key is operated. Technical maturity of the user is evaluated based on the count of operation count I of the function keys, and amaturity level classified into levels of "1 to 3" is assigned to the user based on the evaluation. Depending on the maturity level assigned to the user, either one of icons "M1 to M3" and a predetermined number of sewable patterns both preset to eachsewing level "1 to 3" are both displayed to the user. Similarly, in an edit process control, a maturity level of "1 to 3" is determined based on the operation count I of the function key, and either one of the icons "M1 to M3" an
Sewing machine and computer readable medium, Kawaguchi, et al., Yasuhiko Kawaguchi, Toshihiro Hanai, Masahiko Nagai, Tomoyasu Niizeki, Masashi Tokura, Shinichi Nishida, Noboru Mizuno
Thread Winder And Sewing Machine Provided Therewith - Patent 8074589
S This application is based on and claims the benefit of priority from the prior Japanese Patent Application No. 2008-318223, filed on Dec. 15, 2008, the entire contents of which are incorporated herein by reference.BACKGROUND 1. Field The present disclosure relates to a thread winder which winds a thread supplied from a thread spool onto a bobbin attached to a thread winding shaft, and a sewing machine provided with the thread winder. 2. Related Art A thread winder is generally provided in an arm of a sewing machine to wind a thread supplied from a thread spool, onto an emptied bobbin. A conventional thread winder 1 includes a base 2 mounted on an upper wall of an arm constituting a sewingmachine and a thread winding shaft 3 protruding through the base 2 upward as partially shown in FIG. 12. A bobbin 5 is detachably attached to a bobbin holder 4 so as to be placed on the holder. The bobbin 5 includes a cylindrical bobbin shaft 5a withupper and lower ends and disc-like flanges 5b formed on the upper and lower ends of the bobbin shaft 5a respectively. The thread winding shaft 3 is laterally movable between a preparation position and a winding position although not shown in detail. When the thread winding shaft 3 assumes the winding position, a rubber ring provided on the lower end of thethread winding shaft 3 is pressed against a side surface of a pulley driven by a sewing machine motor thereby to be brought into contact with the latter. As a result, a torque developed by the pulley is transmitted to the thread winding shaft 3 so thatthe thread winding shaft 3 is rotated, whereby a tread T drawn from the thread spool is wound on the bobbin shaft 5a of the bobbin 5. In execution of a thread winding work, a user firstly attach an empty bobbin 5 to the thread winding shaft 3 assuming the preparation position. The thread T drawn from the thread spool is then passed through a predetermined threading passage,and a distal end of the thread T (a winding start portio
Thread winder and sewing machine provided therewith, Fukao, Hiroaki Fukao, Application number 12 588-842, Sewing
Embroidery Using Soluble Thread - Patent 8074591
I. Field of the Invention The present invention relates to medical devices and methods generally aimed at surgical implants. In particular, the disclosed system and associated methods are related to a manner of creating surgical implants via embroidery. II. Discussion of the Prior Art Embroidered structures are created on substrates. Some substrates are designed to stay in place with the embroidered structure while other substrates are removed at the end of the embroidery process. If the substrate is designed to be removed,the preferred method of removal is dissolution. The dissolution processes discussed, however, are not intended to preclude the use of other means of substrate removal which those skilled in the art would employ in the manufacture of an embroideredstructure, or the omission of substrate removal. As an initial step in the creation of embroidered structures, a plurality of parallel, stationary backing threads are placed and secured on one surface of a substrate, called the "backing surface." On the opposing surface of the substrate,called the "stitching surface," is a plurality of stitching threads with one-to-one correspondence to the backing threads. Stitching may be done between one pair of threads at a time or in simultaneous multiplicity, as is described below. The plurality of stitching threads from the stitching surface are passed to the backing surface through openings created in the substrate by the passing of each individual thread. Each stitching thread is then looped over its correspondingbacking thread, in essence picking up the backing thread, which creates a lock stitch. Once each stitching thread has picked up its corresponding backing thread, the plurality of stitching threads are returned to the stitching surface by passing throughthe openings in the substrate created by initially passing the stitching threads to the backing surface. The lock stitches prevent the stitching threads from completely pulling back out of the op
Embroidery using soluble thread, Butcher, et al., Peter Butcher, Christopher Reah, Application number 12 442-944, Sewing
Quilting Tool - Patent 8074587
Not ApplicableSTATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT Not ApplicableDESCRIPTION OF ATTACHED APPENDIX Not ApplicableBACKGROUND OF THE INVENTION This invention relates generally to the field of sewing accessories and more specifically to a quilting tool to be used in conjunction with a commercial long arm quilting machine. The art of quilting has been in existence for over one hundred years. The quilting process generally involves combining a top layer of fabric, that in some instances is created by sewing numerous separate pieces of fabric together, andcombining the top layer with an intermediate layer of batting material and a bottom layer of fabric. The process is quite different than using a standard sewing machine because a commercial long arm quilting machine sits on a carriage that has wheelswhich run along a track. The quilt is loaded on to a frame system for quilting. Generally, when using a quilting machine, the user is in a standing position. The machine is strictly designed for applying a design in thread on the quilt top and not forsewing seams together as when using a conventional sewing machine. Many times, a quilter will want to stitch a series of parallel lines either in a horizontal direction or in a diagonal direction. The quilter usually desires that these lines beparallel to each other. It can be difficult to maintain the parallel nature of the quilt lines and also difficult to measure in a repeated fashion the distance between quilt lines. Therefore a quilting tool that helps facilitate this operation would bebeneficial. There have been a number patents issued for ruler type devices that help operators of standard sewing machines to measure the distance between sewn lines, including John Brady's U.S. Pat. No. 7,043,850 and Christian Ulmer's U.S. Pat. No.5,027,727. However these devices do not take into account the unique conditions present when using a commercial grade quilting machine. One ruler type device
Quilting tool, Olson, Carol E. Olson, Application number 12 589-306, Sewing
Method And System For Freehand And Realtime Quilting With A Computer-controlled Quilting Machine - Patent 8074590
1. The Field of the Invention The present invention relates to quilting. More specifically, the present invention relates to a system for quilting which allows a person to operate a computer controlled quilting machine with a freehand input device, and which allows thequilting machine to sew while following the movement of the input device in real time. 2. State of the Art Quilting has been both a craft and a hobby for hundreds of years, if not longer. Typically, quilting involves making a quilt or another object from one or more pieces of fabric and may include a soft batting placed between layers of cloth. Thepieces of cloth may even be sewn from smaller pieces of cloth in a decorative pattern. The actual quilting of the object is accomplished by sewing through the cloth layers and batting to both attach them together and to form a decorative pattern in thefinished object. While it is understood that many objects can be quilted, the present application will primarily discuss the making of actual quilts for simplicity. It will be appreciated that the methods and devices discussed herein will apply to avariety of objects which are made in a like manner. Traditionally, persons have performed all of the sewing by hand, without the use of a machine. As sewing machines became more commonplace, persons would often sew the two cloth pieces by hand if a decorative pattern is used, and would thenperform the quilting by hand. As quilting became more common, quilting machines became available which could perform the quilting step much more quickly and easily than can be done by hand. While many persons prefer to quilt by hand, many other persons lack the skill, time, or physical ability to quilt by hand. Old age, physical handicaps, or arthritis prevent many persons from quilting by hand. To further allow persons who lacksufficient desire or ability to quilt by hand to be able to quilt, computer controlled quilting machines have been developed which automatically
Method and system for freehand and realtime quilting with a computer-controlled quilting machine, Bentley, Arthur Bentley, Application number 12 331-831, Sewing
The present invention refers to a sewing machine and preferably an industrial sewing machine that is suited to mechanically sew two or more pieces of fabric with two or more seams having differentcharacteristics. The structure of this sewing machine is simple. In addition, this sewing machine can sew two pieces of fabric by utilizing two threads having different characteristics such as colour, thickness, etc. As is known, the industrial sewing machines that sew mechanically two or more pieces of fabric are usually conceived according to different construction techniques that depend on the several operations to be performed. For instance, units comprising one or more needles are known to sew articles of clothing such as jeans or causal trousers in general, working clothes and shirts and so on. In the more common form, said versions are provided with an upper head on which the needle is positioned, a fabric feeding system to feed the pieces of fabric to be sewn and a base that is positioned under the upper head and comprises meanscooperating with the need for the formation of the stitch. In the upper head, the rotary motion imparted by a shaft connected with the driving motor is turned into a reciprocating motion by an eccentric and transferred to the needle support. In addition, the upper head is provided with a fabricpressure foot near the needle, which pressure foot presses the pieces of fabric to be sewn toward the base. The fabric feeding system usually comprises suitable means that act on the pieces to be sewn by translating them according to a direction. The base is positioned under the upper head and comprises at least a crochet that permits to complete the seam stitches together with the needle. Obviously, all the described components that can perform rotary and translatory motions are moved in synchronism. The industrial sewing machines must meet the requirements of stylists and designers who design articles of clothing with more and more exclusive featur
Sewing machine, Guerreschi, Carlo Guerreschi, Application number 12 494-807, Sewing
1. Field of the Invention This invention relates to a sewing machine, more particularly to a sewing machine with a thread cutting device for cutting both upper and lower threads in a sewing machine. 2. Description of the Related Art Conventional sewing machines either include hooks rotating in a horizontal plane, such as those disclosed in U.S. Pat. Nos. 5,964,170 and 6,276,289 B1, or have hooks rotating in a vertical plane, such as those disclosed in U.S. Pat. Nos. 6,152,058 and 5,771,828. The sewing machine disclosed in U.S. Pat. No. 6,152,058 includes a thread cutting device extending in a horizontal direction, and including a fixed knife and a movable knife which cooperate with each other to cut either one or both of upperand lower threads. The movable knife is operable to cut the upper thread at a first timing and to cut the lower thread at a second timing. In order to permit selective cutting of both the upper and lower threads or only the upper thread, the threadcutting device has a complicated construction, thereby resulting in high manufacturing costs and complicated operation.SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine with a thread cutting device which has a simple construction and which can simultaneously cut upper and lower threads. According to this invention, the thread cutting device for a sewing machine includes a drive motor, a fixed knife, a mounting post, and a movable knife. The fixed knife is disposed proximate to a bobbin side surface of a base housing of the sewing machine, and has a working-sidewall extending towards a thread fetching zone under a needle plate to terminate at a first cutting edge. The mounting post has an actuated end coupled with the drive motor so as to be moved angularly about an axis that is parallel to a rotating axis of a hook, and a mount end that is opposite to the actuated end in a longitudinal direction parallelto the axes. The movable knife includes a base
Thread cutting device for a sewing machine, Tseng, et al., Shui-Chun Tseng, Ming-Horng Lin, Application number 12 319-632, Sewing