Abstract: The present invention provides a thread feeding device of a decorative stitching sewing machine. The thread feeding device feeds a needle thread, an upper looper thread, and a lower looper thread in the amounts required for sewing one stitch such that the position of a stitch looping point of the threads changes.

Abstract: An overlock sewing machine includes: a looper cover detection member movable from non-switching to switching positions with looper cover open to closed state transition, with switching member operation switching the threading mechanism state to sewing-enabled after looper cover detection member movement to switching position; a side cover detection member movable from non-detection to detection positions with side cover open to closed state transition; and a lever coupled to the looper cover detection member and side cover detection member, switchable between states of pressing and not pressing the operating protrusion, following looper cover detection member and side cover detection member operating states. The lever is set to the pressing state upon movement of the looper cover detection member to switching position and of the side cover detection member to detection position.

Abstract: With an overlock sewing machine set to an interlock state and the upper blade in an interlock position, upon turning the operating shaft toward one side around its axis, an interlock switching mechanism displaces the other end portion of a rod and sets an interlock release state. A pressing portion presses a first switching portion to swing a swing member toward the forward swing side, which displaces the upper blade to retraction position. With the state set to interlock release with the upper blade in retraction position, upon turning the operating shaft toward one side around its axis, the pressing portion presses a second switching portion to swing the swing member toward the reverse swing side, which displaces the upper blade to interlock position. The interlock mechanism displaces the other end portion of the rod to set the state to interlock.

Abstract: An overlock sewing machine includes an operating shaft that is slidable between first and second positions, and configured such that interlock switching and position switching mechanisms are operated when it is turned. The interlock switching mechanism includes a rotor that is rotatable together with the operating shaft as a single unit, an interlock switching member, and a first engagement target portion formed in the rotor. In the interlock state, setting the operating shaft to the first position engages an engagement portion of the interlock switching member with the first engagement target portion, which restricts operating shaft rotation. Sliding the operating shaft to the second position releases the engagement state between the engagement and first engagement target portions, enabling rotation of the operating shaft.

Abstract: With a overlock sewing machine, when a switching mechanism is switched to a threading-enabled state, and a looper cover is closed, the looper cover is slid toward one side in the hinge shaft axial direction so as to operate a detection lever. In the non-operating state, the detection lever is set to an initial position where it does not press an operation protrusion of a switch. When a side cover is closed, and the detection lever is operated, the operation lever is set to an operation-enabled position where it presses the operation protrusion. When the operation lever is operated, and the side cover is opened, the detection lever is set by passing through the operation-enabled to the operation-disabled position where it does not press the operation protrusion.

Abstract: An engaging clutch for respectively transmitting power from a sewing machine motor to a drive shaft driving a stitch forming device including the looper at the time of the stitch formation or to the gas supply source at the time of the looper threading comprises a structure which is moved to one of a gas supply drive member which transmits the power to the gas supply source and a stitch forming drive member which is fastened to one end of the drive shaft and transmits the power to the stitch forming device so that approach/separation becomes free depending on a manual operation of a looper threading/stitch forming changeover manual operating portion and transmits the power from the sewing machine motor through a clutch hollow shaft and retains a connecting state when connecting to the gas supply drive member.

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: A sewing machine needle bar changing device includes a needle bar case having multiple needle bar holes, each of which receives a needle bar and has at least one longitudinal slide way formed on one side thereof; a needle bar case holder located at one side of the needle bar case and having a control guide way, which is engaged with the needle bars and has a longitudinal opening; a needle bar guide member engaged with one needle bar that is moved to a sewing position to align with the longitudinal opening, and brought by a crank link of the sewing machine to move upward and downward synchronously with the engaged needle bar; and a driving mechanism for moving and then holding a selected needle bar to the sewing position. All other needle bars not in the sewing position are restricted by the control guide way from moving axially.

Abstract: A multi-needle sewing machine includes needle bars, presser feet, a support member configured to support the needle bars such that the needle bars can move up and down, a cutting member, a guide member configured to move between an extended position and a stand-by position, and a holding member configured to hold an end portion of a upper thread, the holding member including a fixed member that is mounted to the support member, movable members each of which is provided for one of the needle bars, and includes a guide portion formed by cutting a notch in an outer end portion on the needle bar side of the movable member, and elastic members each of which is provided for one of the movable members and configured to elastically energize the one of the movable members toward the fixed member.

Abstract: A multi-needle sewing machine is disclosed that includes a needle-bar case that supports needle bars; a needle-bar case transfer mechanism that transfers the needle-bar case to place a predetermined needle bar to a needle drop position; a thread guide member that is movable up and down, the thread guide member being provided with thread guide sections spaced by a predetermined distance and that guide a plurality of threads; a plurality of thread inlets that are provided at the needle-bar case, each thread inlet being uniquely associated with one of the thread guide sections and that introduces the threads guided by the thread guide sections toward the needle bars; and a lifting/lowering mechanism that moves the thread guide member up and down during transfer of the needle-bar ease and the thread inlets such that the thread guide sections and the associated thread inlets maintain a constant distance therebetween.

Abstract: A sewing machine needle bar changing device includes a needle bar case having multiple needle bar holes, each of which receives a needle bar and has at least one longitudinal slide way formed on one side thereof; a needle bar case holder located at one side of the needle bar case and having a control guide way, which is engaged with the needle bars and has a longitudinal opening; a needle bar guide member engaged with one needle bar that is moved to a sewing position to align with the longitudinal opening, and brought by a crank link of the sewing machine to move upward and downward synchronously with the engaged needle bar; and a driving mechanism for moving and then holding a selected needle bar to the sewing position. All other needle bars not in the sewing position are restricted by the control guide way from moving axially.

Abstract: The present invention relates to a heat-insulating-material mat (10) in particular for building construction, which is formed from layers (1, 2, 3, 4, etc.) which are arranged loosely one above the other and are made of insulating materials which fuse together exclusively under the heat of a standard flame of a fire test conducted in accordance with standard DIN EN ISO 11925-2 and are held together by means of at least one seam (31, 32, 33) which is configured in undulating form in the longitudinal direction (X) and/or transverse direction (Y) of the mat (10) and in the case of which at least one thread (20, 21, 22) is guided through the layers (1, 2, 3, 4, etc.), wherein the undulating form of the seam (31, 32, 33) is dimensioned such that, constantly changing in position in relation to the local surface area of the standard flame, it moves out of the local flame-treatment surface area. A method for producing heat-insulating-material mats (10) making use of a multi-needle sewing machine is also claimed.

Abstract: A multi-needle sewing machine includes a machine frame side thread guide member and guide threads drawn from plural thread spools. The multiple-needle sewing machine includes plural thread entrances to introduce threads guided by machine frame side thread guide portions to needle sides of needle bars, plural intermediate thread guide portions that guide intermediate portions of the threads, and an intermediate thread guide portion moving mechanism. The intermediate thread guide portion moving mechanism moves the intermediate thread guide portions in accordance with movements of the thread entrances during a movement of the needle bar case such that the intermediate thread guide portions are moved by maintain that the intermediate thread guide portions are spaced from each other.

Abstract: A sewing system that forms an embroidery pattern on the workpiece cloth by co-operating a sewing mechanism and a transfer mechanism using a count of thread colors determined by a count of thread color data found to match thread color data by a verifier. By removing a storage device attached to one of the plurality of multi-needle sewing machines and attaching the removed storage device to other one or more multi-needle sewing machines, unsewn portions of the embroidery pattern at each of the other one or more multi-needle sewing machines are sewn by reading the progress information by a data reader, verifying whether or not the thread color data contained in the progress information read by the data reader matches thread spool color data of other one or more multi-needle sewing machines and executing a sewing operation based on the verification.

Abstract: A multi-needle sewing machine includes needle bars, presser feet, a support member configured to support the needle bars such that the needle bars can move up and down, a cutting member, a guide member configured to move between an extended position and a stand-by position, and a holding member configured to hold an end portion of a upper thread, the holding member including a fixed member that is mounted to the support member, movable members each of which is provided for one of the needle bars, and includes a guide portion formed by cutting a notch in an outer end portion on the needle bar side of the movable member, and elastic members each of which is provided for one of the movable members and configured to elastically energize the one of the movable members toward the fixed member.

Abstract: A balancer is fixedly attached to a rotary input shaft of a crank mechanism that converts rotary drive of a needle bar drive source to up-and-down motion of a needle bar. The balancer is caused to rotate at substantially an opposite phase with respect to up-and-down motion of the needle bar with the rotary drive of the needle bar drive source. When the balancer is driven at substantially the opposite phase with respect to the up-and-down motion of the needle bar, inertia force in an up-and-down direction of the needle bar, generated due to the up-and-down motion of the needle bar is negated, whereby it is possible to reduce vibration generated in the up-and-down direction. Sewing heads paired with each other by being arbitrarily combined are controlled so as to be rotationally driven to cause rotational directions of the needle bar drive sources to become opposite directions to each other.

Abstract: Sewing machine (10 comprising a base (12) with a crochet and a head (14) that comprises a needle support (30), a fabric pressure foot (24) and its adjusting means (26), motor means (28) to make a needle sew together with the crochet, and lever means (32) to turn the rotary motion of the driving means into a vertical reciprocating motion. The needle support (30) in turn comprises at least two needle bars (46, 48) that are moved vertically by said lever means (32), and a connecting element (50) to couple the lever means (32) with at least a needle bar (46,48). Each needle bar (46,48) is coupled with a needle (16,18) through a respective thread and actuated selectively in the crochet in order to allow the sewing.

Abstract: The invention comprises using a fabric cut into several pieces which are further assembled together by stitches, the stitches being made using a sewing machine comprising at least two needles (A?, B?) operating in-line one behind the other so that the sewing stitch of the second needle (B?) is made on the threads of the sewing stitch made by the first needle (A?) in order to cover the perforation made by the first needle and so that the perforation made by the second needle (B?) is made through said thread (11), thereby filling said perforation with said thread (11).

Abstract: An apparatus for the production of rectangular mattress plates from a length of material (18) which is continuously fed to the apparatus includes a base frame (10) with a transport path (16) for the length of material (18), a feed drive (24) for feeding the length of material (18) in a transport direction (A), two lateral sewing stations (28) which are arranged at an adjustable distance from each other on a crossbeam (26) of the base frame (10) directed transversely across the transport path (16) and which are each provided with a longitudinal sewing head (30) for producing a lateral seam and with a longitudinal cutter (32), a transverse sewing station (36) which is arranged on a crossbeam (34) of the base frame (10) directed transversely with regard to the transport direction (A) across the width of the transport path (16) such that it can be moved along said crossbeam and which is provided with a transverse sewing head (38) as well as a transverse cutter (40), a transverse drive for moving the transverse se

Abstract: A multi-needle sewing machine includes a plurality of needle bars having lower ends to which needles are attached, respectively, a needle bar selecting unit selectively switching one of the needle bars to a needle location, a stitch number obtaining unit and an allotting unit. An embroidery pattern including a plurality of partial patterns is sewn by the use of needle threads of colors differing per partial pattern, while the needle bars are selectively switched. The stitch number obtaining unit obtains the number of stitches necessary for sewing the partial patterns for every partial pattern. The allotting unit allots the needle threads to the needle bars so that the needle bars are prevented from being one-sided in the number of stitches, based on the obtained number of stitches, in order that one of the needle bars to be used for the sewing of each partial pattern may be determined.

Abstract: A multi-needle sewing machine is disclosed that includes a needle-bar case that supports needle bars; a needle-bar case transfer mechanism that transfers the needle-bar case to place a predetermined needle bar to a needle drop position; a thread guide member that is movable up and down, the thread guide member being provided with thread guide sections spaced by a predetermined distance and that guide a plurality of threads; a plurality of thread inlets that are provided at the needle-bar case, each thread inlet being uniquely associated with one of the thread guide sections and that introduces the threads guided by the thread guide sections toward the needle bars; and a lifting/lowering mechanism that moves the thread guide member up and down during transfer of the needle-bar ease and the thread inlets such that the thread guide sections and the associated thread inlets maintain a constant distance therebetween.

Abstract: The invention relates to a multiple needle sewing machine for sewing large-area sewing material (28) which consists of several layers, at least two layers (6, 15, 21), whereof one layer (15) at least is formed of an elastic material, which multiple needle sewing machine comprises a sewing unit, a supply device for the layers to be sewn together (6, 15, 21), a storage device for withdrawing and storing the sewn layers (6, 15, 21) from the sewing unit, as well as a device which is arranged upstream of the sewing unit and by which the layer (15) made of an elastic material is supplied to the sewing unit in a non-stretched condition or tendentiously in the region of the device in a tendentiously compressed condition, together with said one or said further layers (6, 21), while retaining the compression.

Abstract: A threading device of a sewing machine is provided. The threading device includes a threading hook which moves forward to enter an eye of a needle to catch a needle thread, and moves rearward with the needle thread being caught to insert the needle thread through the eye, a threading shaft which holds the threading hook, an operating member which is operated to move the threading shaft, a threading operation mechanism which transmits the movement of the threading shaft to the threading hook to move the threading hook back and forth, and a restricting device which makes the threading operation mechanism inoperable when the spreader mechanism is attached to the sewing machine main body, and makes the threading operation mechanism operable when the spreader mechanism is detached from the sewing machine main body.

Abstract: A sewing machine is provided. The sewing machine includes a top covering shaft mechanism, a spreader mechanism detachably attached to the top covering shaft mechanism from below and operable to catch a covering thread and to interlace the covering thread with a needle thread inserted into a needle to form covering stitches, and an operating member having a hook portion and rotatably attached to either one of the top covering shaft mechanism and the spreader mechanism. The other of the top covering shaft mechanism and the spreader mechanism has a protrusion with which the hook portion is engageable. The operating member is rotatable between a position at which the hook portion engages with the protrusion to lock the spreader mechanism with respect to the top covering shaft mechanism and another position at which the spreader mechanism is detachable from the top covering shaft mechanism.

Abstract: A sewing system that forms an embroidery pattern on the workpiece cloth by co-operating a sewing mechanism and a transfer mechanism using a count of thread colors determined by a count of thread color data found to match thread color data by a verifier. By removing a storage device attached to one of the plurality of multi-needle sewing machines and attaching the removed storage device to other one or more multi-needle sewing machines, unsewn portions of the embroidery pattern at each of the other one or more multi-needle sewing machines are sewn by reading the progress information by a data reader, verifying whether or not the thread color data contained in the progress information read by the data reader matches thread spool color data of other one or more multi-needle sewing machines, and executing a sewing operation based on the verification.

Abstract: A multi-needle type embroidery sewing machine includes a laser marker for irradiating a needle drop point of one of a plurality of needles attached to one of a plurality of needle bars being indexed to a sewing position with a laser beam. The laser marker is attached to an arm unit to be arranged just behind of the one of the plurality of needle bars indexed to the sewing position. The angle of inclination of the laser beam irradiating the needle drop point with respect to an axis of the one of the plurality of needle bars indexed to the sewing position is in a range of 5 degrees to 25 degrees.

Abstract: A multi-needle sewing machine includes a machine frame side thread guide member fixed to a machine frame and having plural of machine frame side thread guide portions and guide threads drawn from plural thread spools located on a machine frame respectively, plural thread entrances defined in a needle bar case to introduce threads guided by the machine frame side thread guide portions to needle sides of needle bars, respectively, plural intermediate thread guide portions located between the machine frame side thread guide portions and the thread entrances so as to be movable respectively, the intermediate thread guide portions guiding intermediate portions of the threads, and a intermediate thread guide portion moving mechanism moving the intermediate thread guide portions according to movement of the needle bar case during movement of the thread entrances with movement of the needle bar case while the intermediate thread guide portions are spaced from each other.

Abstract: In a sewing machine for covering chain stitch according to the present invention, a thread push member is mounted on a top cover shaft which drives a cover thread looper, and the thread push member is arranged on the cover thread guide. When swinging backward in association with a movement of the cover thread looper, the thread push member pushes the top cover thread passing through a guide hole of the cover thread guide, forcibly moves the top cover thread and keeps the top cover thread near a back end of the guide hole. The top cover thread is arranged at a predetermined position on a surface of a cloth without being affected by a force from the needle thread, and a covering chain stitch can stably be formed with the excellent appearance.

Abstract: Sewing machine (10) comprising a base (12) with a crochet and a head (14) that comprises a needle support (30), a fabric pressure foot (24) and its adjusting means (26), motor means (28) to make a needle sew together with the crochet, and lever means (32) to turn the rotary motion of the driving means into a vertical reciprocating motion. The needle support (30) in turn comprises at least two needle bars (46, 48) that are moved vertically by said lever means (32), and a connecting element (50) to couple the lever means (32) with at lead a needle bar (46, 48). Each needle bar (46, 48) is coupled with a needle (16, 18) through a respective thread and actuated selectively in the crochet in order to allow the sewing.

Abstract: Rotary hook drive device for a sewing machine includes: a rotary hook rotatably provided on a rotary hook support; a cylindrical grooved cam provided on a drive shaft drivable to rotate in one direction; a cam follower engaged in a cam groove of the cylindrical grooved cam and capable of making reciprocative movement about a support shaft in response to rotation of the cylindrical grooved cam; and a transmission mechanism that transmits the reciprocative movement of the cam follower to the rotary hook to cause the rotary hook to make reciprocative pivoting movement. Such arrangements can prevent deviation in driving timing of the rotary hook and simplify the construction of the rotary hook drive device.

Abstract: In a head group comprising two or more machine heads (3, 4) provided in proximity to each other so that each of the machine heads can perform embroidery sewing on an embroidering area of an embroidery frame on which a cylindrically-shaped embroidering workpiece is set, at least one of the machine heads is a multi-needle machine head (3). There are also provided a color change mechanism (20) for selectively positioning a desired needle at a predetermined operating position in the multi-needle machine head, a rotary hook bed (5) provided for each of the head group for shared use between the machine heads. There is provided a horizontal movement mechanism (30) for disposing the individual machine heads and the color change mechanism for horizontal movement relative to the rotary hook beds and horizontally moving the individual machine heads and the color change mechanism together to place any one of the machine heads in each of the head groups in positional correspondence to the rotary hook bed.

Abstract: A boring device that can be attached to and detached from a lower end of one of a plurality of needle bars provided on a multi-needle embroidery sewing machine, and includes a boring knife that makes a cut in a work cloth and a first engagement portion to be engaged with a second engagement portion provided on the one of a plurality of the needle bars. The second engagement portion restricts horizontal rotation of the boring device, and a horizontal position of the boring knife with respect to the one of the needle bars is determined when the first engagement portion is engaged with the second engagement portion.

Abstract: The invention relates to a multiple needle sewing machine for sewing large-area sewing material (28) which consists of several layers, at least two layers (6, 15, 21), whereof one layer (15) at least is formed of an elastic material, which multiple needle sewing machine comprises a sewing unit, a supply device for the layers to be sewn together (6, 15, 21), a storage device for withdrawing and storing the sewn layers (6, 15, 21) from the sewing unit, as well as a device which is arranged upstream of the sewing unit and by which the layer (15) made of an elastic material is supplied to the sewing unit in a non-stretched condition or tendentiously in the region of the device in a tendentiously compressed condition, together with said one or said further layers (6, 21), while retaining the compression.

Abstract: The present invention relates to a method for producing a sewn product, especially a mattress panel, a quilt or the like, having corner areas which deviate from an orthogonal pattern, preferably from several layers of sewn product material which are to be stitched together, as a segment of a sewn product material, in which method the sewn product material is provided with at least two stitched seams between two sewn products that are arranged adjacent to each other in the sewn product material, by means of a sewing device which is movable transversely to the conveying direction of the sewn product material, and in which the sewn product material is subsequently cut between the two stitched seams, wherein the sewing device includes a sewing unit with needles and an oscillating shuttle box including shuttles which are assigned to the needles, in order to produce in a simple and inexpensive way sewn products having corner areas which deviate from an orthogonal pattern, wherein with a device at least one sub-area

Abstract: The present invention relates to a method for manufacturing a sewing product (20,21), particularly a mattress panel, a quilt or the like, preferably from several sewing product layers that are to be stitched together, as a section of a sewing product material (11), in which method said sewing product material (11) is, by means of a sewing device (1) that is movable transversely to the conveying direction, provided with at least two stitched seams (19) between two sewing products (20, 21) which are arranged adjacent to each other in the sewing product material (11), and in which the sewing product material is subsequently cut between these two stitched seams (19), said sewing device (1) including a sewing unit (3) with needles (18) and a gripper box (8) with grippers allocated to said needles (18), and a tape-like sewing element (14) being sewed to the sewing product material (11) in the area of the stitched seams (19).

Abstract: A sewing machine having two needles (8, 9) that are at an angle (alpha) to the vertical axis of a piercer (C) is provided. After the piercer has pierced the item to be sewn with a tip thereof, the needles pierce through vertical slits (27) in the piercer (C). The two needles are driven in a direction of the respective axis thereof, i.e., in a direction of the axes (V1, V2).

Abstract: A conduit sleeve structure for use with fiber optic cables, coaxial cables and the like includes a pair of adjacent strip-shaped layers of flexible material that are joined along their longitudinal edges to define a channel through which the cable can extend longitudinally through the innerduct structure between the layers. The adjacent layers have differing widths between their longitudinal edges, whereby the wider layer bulges away from the narrower layer to impart an open configuration to the channel. It has been found that the conduit sleeve structure may be manufactured more efficiently and inexpensively if multiple sheets and pull cords are stacked and arranged in such a way that multiple conduit sleeve structures may be manufactured simultaneously in a parallel arrangement. The method of manufacturing the conduit sleeve structures includes feeding several stacked sheets through a folding machine or mechanism, a stitching machine, and then a slitting machine.

Abstract: The present invention discloses a sewing needle structure for stitching a hidden nylon zipper, more particularly relates to a sewing needle structure applicable for the hidden nylon zippers of size No. 5 or above, characterized in that the sewing needle structure has at least three needles, which are parallel to each other. Those parallel needles are arranged with a gap having the smallest length within the maximum range and being evenly distributed along the interlocking teeth. The sewing needle structure having at least three needles fixes each seam between the interdigitating teeth, and the distance between the interlocking can be set to a minimum, such that the positioning of each tooth onto the tape by splicing could be more secure and reliable. Furthermore, the turnover folded edges of the two zipper tapes can be directly interlocked and securely coupled, and thereby the nylon zipper attains the hidden effect with high artistic quality.

Abstract: A sewing machine includes a plurality of needle bars. One of the needle bars can be selected and reciprocally driven so as to stitch a desired embroidery pattern. The sewing machine has a common setting mode and an individual setting mode, which permits various operating conditions to be either commonly set for all the needle bars or individually set for one or more of the needle bars. If the common setting mode has been selected, the same operating conditions can be commonly set for all the needle bars. If the individual setting mode has been selected, the operating conditions can be set individually for each needle bar.

Abstract: The over lock sewing machine for forming seams of an over-edge chain stitch and a double-thread chain stitch on a work cloth is provided with a needle bar holding a plurality of needles for forming a seam by a vertical reciprocating movement a plurality of loopers and a needle bar transmitting mechanism moving the needle bar in approximately orthogonal direction relative to a cloth feeding direction of the work cloth and the vertical reciprocating direction of the needle bar. Accordingly, the over lock sewing machine can make various decorative stitches with an over-edge chain stitch function and a zigzag stitch function. Moreover, the over lock sewing machine is capable with operation at a low cost.

Abstract: An auxiliary device of a sewing machine capable of making three net-like stitches has two clipping members connected to each other. A hooked plate is movably passed through between the clipping members to pull a first kind of threads for same to hold in position. The front ends of the clipping members are disposed under a curved hook of a thread guide, and relatively close to needles of the first threads such that, in sewing operation, the first threads can be connected with a net thread controlled by the thread guide and a shuttle to form the net-like stitch without possibility of the first threads falling off the clipping members and failing to connect the net thread.

Abstract: The sewing machine comprises two hooks 27a and 27b which are respectively disposed in such a manner as to correspond to two needles 7 and 7 provided in the present sewing machine, hook gap adjusting device 33-35 respectively for changing the gap between the two hooks 27a and 27b, drive device 36 for driving the hook gap adjusting device 33-35, transmission device 37-41 respectively for transmitting the driving of the drive device 36 to the hook gap adjusting device 33-35, and control device 50 for controlling the driving of the drive device 36 to thereby control the above gap between the two hooks, whereby the sewing machine is able to move the hooks 27a and 27b easily only by driving the drive device.

Abstract: A multineedle embroidering sewing machine comprising at least one sewing machine head provided with a plurality of needle bars and a plurality of thread take-up levers corresponding to the needle bars, needle thread deflecting sections, respectively, arranged upstream of the respective thread take-up levers existing in needle thread paths, and thread take-up members provided correspondingly on the respective needle thread deflecting sections.

Abstract: A sewing machine with multiple needles employs, for each needle, a needle bar guide in the shape of the letter “c” and cooperates with a projection. The needle bar guide holds a needle bar by passing the needle bar through holes formed at upper and lower positions of the needle bar guide. Therefore, when the projection is rotated in a boss, the needle bar guide is also rotated, and the end of the needle is oscillated. When the projection is moved back and forth in the boss, the end of the needle is also moved in the same manner. Consequently, a deviation in the relative position between a needle and a rotary hook caused by a slight difference in machining and assembly accuracy can be adjusted for every needle.

Abstract: An electronically geared felling machine employs physical separation of the needles and loopers to provide significant ergonomic and functional advantages. The felling machine includes a needle servo motor for driving the needles in a sewing motion and a looper servo motor for driving the loopers in their sewing motion. The motion of the needles and loopers are electronically geared to enable these sewing parts to move in concert to produce a plurality of stitchings in materials. Materials may be moved through the sewing area of the felling machine by use of feed rollers positioned fore and aft of the needles. The feed rollers are driven by servo motors. Pneumatic cylinders urge the feed rollers downwardly against the materials to enable the feed rollers to maintain continuous contact with the materials and to maintain continuous movement of the materials through the sewing area of the machine.

Abstract: A sewing installation for the production of a lined pocket opening on a workpiece comprises a stand on which a working plate is supported. A cutting device for the production of corner cuts in the workpiece is disposed underneath the working plate. This cutting device is held on a support which lodges in the stand pivotally about an axis so that the cutting device can be moved into a position in which it is free from the working plate.

Abstract: An apparatus for supplying, to a sewing device, a connected belt-loop material including at least one connection portion where two long materials are connected to each other, the connection portion having a width greater than a substantially constant width of a remaining portion of the belt-loop material, the apparatus including a feeding device which feeds the belt-loop material toward the sewing device, and a positioning device which positions, in a direction extending parallel to the width of the belt-loop material, at least the remaining portion of the belt-loop material being fed by the feeding device, so that the remaining portion takes a reference position in the direction of width, the positioning device including a permitting device which permits the connection portion of the belt-loop material to be fed through the positioning device by the feeding device, without lowering an accuracy with which the remaining portion of the belt-loop material is positioned by the positioning device in the direction

Abstract: A method of quilting patterns is provided in which pattern files are generated containing quilting machine control data for use by a controller of a quilting machine to produce different quilted patterns. Product information is generated that identifies pluralities of patterns. In response to the product information, the quilting machine controller sequentially reads the pattern files for each of the patterns of the identified plurality and sequentially quilts the plurality of patterns in the form of sub-patterns on the same panel of multi-layered material to form a combination pattern. A multi-needle quilting apparatus is provided with a controller programmed to carry out the method as part of a quilting system in which pattern and product databases are generated and linked for the production of a variety of individual and combination patterns.

Abstract: Provided is an embroidery sewing machine for forming an embroidery pattern in accordance with embroidery data. The embroidery data includes position data indicative of a portion of a working fabric on which the embroidery pattern is to be formed, and color change data indicative of change of needle bars of the sewing machine. The sewing machine is provided with a thread color assigning system which assigns a thread collor to each of the needle bars, an order assigning system which assigns order of the needle bars to be used, a display device which displays the embroidery pattern based on the embroidery data and the order of the needle bars to be used change by the order changing system, and a sewing system which forms the embroidery pattern based on the embroidery data and the order of the needle bars to be used changed by the order changing system.

Abstract: The present invention is directed to a multi-head multi-needle sewing machine system adapted to change threads by horizontally moving sewing heads, which system provides for space savings and further increase in the number of sewing heads and colors of threads to be employed. For this purpose, needle-bar support frames 6 are each guided in the horizontal movement thereof by one guide rail 31 horizontally extending over the whole length of a sewing machine system 1. A thread take-up positioning piece 63 for maintaining undriven needle thread take-ups 5 at a raised position is secured to place as extending substantially between the centers of adjacent arms 3. In this multi-head multi-needle sewing machine system 1, the movement ranges of the needle-bar support frames 6 of the respective sewing heads partially overlap with each other but there is no fear of interference therebetween because the needle-bar support frames 6 horizontally travel for the same amount in the same direction.