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STITCH FORMING

Subclass of:

112 - Sewing

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
112154000STITCH FORMING52
20110114000AUTOMATED SKIP CHECKER DEVICE FOR SEWING MACHINE - In an automated skip checker device for sewing machine 05-19-2011
20120073484SEWING MACHINE - A sewing machine includes a control portion that controls a thread tension adjustment portion and a feed portion such that a first stitch and a second stitch are formed alternately on a sewing object. The first stitch includes only a stitch in which an interlacing point of the upper thread and a bobbin thread is lower than a top surface of the sewing object. The second stitch includes at least one set of a first section and a second section. The first section is a section in which the interlacing point and the bobbin thread are pulled out, by the thread tension, in the first direction on the top surface of the sewing object. The second section is a section in which the bobbin thread is pulled out in the second direction, and at least part of the second section overlapping with the first section.03-29-2012
112155000 Multiple machines 1
20090126610MULTI-HEAD SEWING MACHINE AND METHOD OF CONTROLLING OPERATION OF MULTI-HEAD SEWING MACHINE - 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.05-21-2009
112157000 Zigzag 11
20090050038ZIGZAG SEWING MACHINE - A zigzag sewing machine is provided. The zigzag sewing machine includes a stitching motor which moves a needle, a feeding motor which moves a feed dog to feed a cloth, a needle swinging motor which swings the needle, a multistage-operating portion operable to adjust at least one of a feed amount of the cloth and a swing amount of the needle in a minimum adjustable unit, and a control section which controls the stitching motor, the feeding motor and the needle swinging motor to carry out a zigzag sewing in accordance with the at least one of the feed amount and the swing amount adjusted by the multistage-operating portion. The control section is configured to selectively assign a first value and a second to the minimum adjustable unit depending on whether the stitching motor is in operation or not.02-26-2009
112443000 Vibrating needle 10
20110083596SEWING MACHINE - The present invention provides a sewing machine that can perform zigzag sewing a cylindrical sewn article.04-14-2011
112444000 Having indicator 2
112445000 And specified electronic memory 2
20080289552Sewing machine and computer readable medium - A sewing machine includes a sewing controller that controls sewing machine components, an imaging element capable of capturing facial images of a sewing machine user; a settings storage that stores settings for preset modes, the settings comprising items pertaining to sewing machine functions; a user information storage that stores facial image data of the user captured by the imaging element with mapping to the settings of the mode registered with the user; a verifier that verifies whether or not image data that matches the facial image data captured by the imaging element at sewing operation start exists in the user information storage; and an instruction controller that reads the settings from the user information storage when receiving a positive verification result from the verifier, and that instructs the sewing controller to control the sewing machine components based on the settings read.11-27-2008
20100224111Sewing machine provided with needle bar rocking mechanism - A sewing machine includes a needle bar to which a needle is attached, a needle bar rocking mechanism which rocks the needle bar, a needle plate having a needle hole through which the needle is passed, an imaging device which images a lower part of the needle bar, a setting section which sets a range of rocking motion of the needle bar based on an image obtained by the imaging device, and a control device which controls the needle bar rocking mechanism based on the range of rocking motion set by the setting section.09-09-2010
112446000 Closed pattern sewing (e.g., buttonhole) 1
112447000 Including electronic memory 1
20100077950SEWING MACHINE - A sewing machine is provided. The sewing machine includes a needle, a feed dog which feeds a workpiece in a feeding direction, a stitching motor which vertically moves the needle, a needle swinging motor which swings the needle in a direction orthogonal to the feeding direction, a memory in which basic coordinate data of basic buttonhole stitches having a basic stitching width is stored, an input device from which a stitching width is input, and a control device which creates a modified coordinate data based on the basic coordinate data and the stitching width input from the input device, and controls the stitching motor and the needle swinging motor based on the modified coordinate data to form buttonhole stitches having the stitching width input from the input device.04-01-2010
112453000 Having electronic memory 3
112456000 Including means to calculate needle or material feed parameters 1
20100199902Sewing machine, computer readable medium storing thread tension adjustment program for sewing machine, and thread tension evaluation unit - A sewing machine including an image capturing unit disposed at a position capable of capturing images of the stitches formed on the workpiece cloth and capturing images of the stitches at least from either upper and undersides of the workpiece cloth; an extracting section that extracts, from the image data of the stitches captured by the image capturing unit, a region occupied by an opposite side thread appearing at an interlace of the needle thread and the bobbin thread; a calculating section calculating an area of the extracted region; an evaluating section that evaluates a tension balance between the needle thread and the bobbin thread based on the area calculated by the calculating section; and a controller controlling the thread tension adjustment mechanism to modify the tension balance of the stitches based on a result of evaluation by the evaluating section.08-12-2010
112457000 Including programmable or detachable memory 2
20090188414Sewing machine, and computer-readable storage medium storing sewing machine control program - A sewing machine includes an image pickup device that picks up over a sewing machine bed; a feature point coordinates calculation device that extracts feature points from the picked up image and calculates two-dimensional coordinates of the extracted feature points; a reference coordinates storage device that stores reference coordinates, which are previously measured three-dimensional coordinates of the feature points; a correlation device that correlates the reference coordinates stored in the reference coordinates storage device with the feature point coordinates, which are the two-dimensional coordinates of the feature points calculated by the feature point coordinates calculation device; and a parameter calculation device that calculates a parameter about the image pickup device based on a result of correlation by the correlation device.07-30-2009
20090205548Sewing machine and computer readable medium storing sewing needle status evaluation program - A sewing machine provided with a needle bar having a sewing needle interchangeably attached to its lower end including an imaging element that captures images of the sewing needle; an extractor that extracts a shape of the sewing needle from the images of the sewing needle captured by the imaging element; an abnormality determiner that determines presence/absence of abnormalities in measurements of the sewing needle based on the shape of the sewing needle extracted by the extractor; and an abnormality alerter that alerts the presence of abnormalities determined by the determiner.08-20-2009
112459000 Having cam actuation of needle or material feed 3
112461000 And specified material feed 2
112462000 And fine adjustment of stitch width or material feed 1
20080229990Apparatus for adjusting timing of needle and looptaker of sewing machine - An apparatus for adjusting a timing of a needle and a looptaker of a sewing machine provided at a zigzag sewing machine having an upper shaft for driving a needle bar, a lower shaft for driving a looptaker, a machine frame, and a timing belt for connecting and synchronizing the shafts includes a cam member including a first cam surface and a second cam surface, a first arm member and a second arm member supported by the machine frame and a first pulley and a second pulley mounted to the first arm member and the second arm member respectively and always contacting the timing belt, the first pulley following the first cam surface and the second pulley following the second cam surface.09-25-2008
112463000 And plural, selectively used cams 1
20140283723SEWING MACHINE - A sewing machine includes a needle bar, a needle bar up-and-down movement mechanism, a swinging mechanism, a lower shaft, an outer shuttle, a thread cutting mechanism, a rotation speed adjustment mechanism, and an actuator. The needle bar up-and-down movement mechanism is configured to move the needle bar up and down.09-25-2014
112464000 Including fine adjustment of stitch width 1
20150376824Sewing Machine Provided With Zigzag Motion Mechanism - A zigzag width range setting apparatus 12-31-2015
112162000 Overseaming 1
20080202400UPPER LOOPER DRIVING DEVICE OF SEWING MACHINE - An upper looper driving device of a sewing machine is provided. The device includes an upper looper driving shaft which is rotatable around an axis thereof, an upper looper holder having an upper end portion at which the upper looper is held, an upper looper swinging arm having one end portion supported by the upper looper driving shaft such that a position of the upper looper swinging arm is adjustable along an axial direction of the upper looper driving shaft and the other end portion to which the upper looper holder is rotatably coupled, and an upper looper guide slidably holding the upper looper holder. The upper looper guide is supported by a frame of the sewing machine such that a position of the upper looper guide is adjustable along a direction parallel to the axial direction of the upper looper driving shaft.08-28-2008
112163000 Multiple needle 13
20080289551MULTIPLE NEEDLE SEWING MACHINE AND METHOD FOR SEWING LARGE-AREA SEWING MATERIAL - The invention relates to a multiple needle sewing machine for sewing large-area sewing material (11-27-2008
20090314192ROTARY HOOK DRIVE DEVICE AND MULTI-HEAD SEWING MACHINE - 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.12-24-2009
20100000452SEWING MACHINE - Sewing machine (01-07-2010
20100077949SEWING MACHINE FOR COVERING CHAIN STITCH - 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.04-01-2010
20100242819MULTI-NEEDLE SEWING MACHINE - 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.09-30-2010
20130025517MULTI-NEEDLE SEWING MACHINE - 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.01-31-2013
20140290548SEWING MACHINE NEEDLE BAR CHANGING DEVICE - 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.10-02-2014
112165000 Chain and double chain 5
20100126396MULTIPLE NEEDLE SEWING MACHINE - The invention relates to a chain stitch sewing machine comprising stitch-forming sewing elements including at least one needle head (05-27-2010
20150136004MULTI-THREAD CHAIN STITCH SEWING MACHINE WITH SEAM RAVEL PREVENTING APPARATUS - A needle plate base in a multi-thread chain stitch sewing machine with a seam ravel preventing apparatus is divided into a left needle plate base for attaching a needle plate thereto and supporting a swinging support shaft of a thread hanging hook; and a right needle plate base for fixedly supporting a stopper member and a thread handling air cylinder and a stopper air cylinder. The right needle plate base is fastened to a sewing machine bed. The left needle plate base is fastenably and unfastenably fastened to an upper surface of the bed via screw members. Adjustment of stitch performation, and maintenance, e.g., replacement of various kinds of components stored inside the bed, can extremely easily and simply be carried out without having much trouble and requiring labor and time, and therefore, the stitch performation and predetermined ravel preventing function can be constantly surely reproduced.05-21-2015
112166000 Multiple looper 3
20100326341TRANSFORMABLE STRUCTURE FOR PRODUCING A MULTI THREAD SINGLE LINE STITCH AND METHOD AND MACHINE FOR ITS REALIZATION - A multi-thread single-line chain stitch line, consisting of at least three threads. This method provides for the formation of variable structures of stitches, based on varying sequences for the conjoining of several top threads, loaded to their individual needles, with several bottom threads, loaded to their individual loopers. The method suggests intertwining top threads between each other. The proposed stitch structure provides homogeneity of mechanical stresses in the stitch line, resulting in higher strength and durability. The machine to provide such stitch line comprises a revolver, bringing required needles to the operation point and intertwining threads during formation of the stitch line, and likewise comprising a revolver for bringing required loopers to the operation point. In one of the embodiments of the present invention, only three top threads are used, with the looper having no bottom thread loaded in it.12-30-2010
20110000413MACHINE AND METHOD FOR SEWING, EMBROIDERING, QUILTING AND/OR THE LIKE - One embodiment of the present invention relates to a machine for sewing, embroidering, quilting and/or the like. Another embodiment of the present invention relates to a method for sewing, embroidering, quilting and/or the like. In one example, the present invention may be applied (e.g., as a machine and/or method) to a multi-needle machine or method. In another example, the present invention may provide for automatic lower (or bottom) thread cutting. In another example, the present invention may provide for automatic lower (or bottom) thread cutting by utilizing the phase (that is, movement phase) of a return of a looper (or hook) to cut the lower (or bottom) thread.01-06-2011
20130081563TWO-NEEDLE SEWING MACHINE AND TWO-NEEDLE SEWING MACHINE STITCH FORMING METHOD - 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.04-04-2013
112167000 Adjustable 1
20150128836COMPOSITE SANDWICH STRUCTURE AND METHOD FOR PRODUCING SUCH STRUCTURE - A device for producing a composite sandwich structure (05-14-2015
112170000 Short thread 1
20100199899METHOD AND SEWING MACHINE FOR FORMING SINGLE-THREAD LOCKED HANDSTITCHES - A thread can be captured surely by the thread capturing open eye of a needle and a stitch can be formed in the space within a machine bed. A handstitch on the front surface of a fabric workpiece and a locked stitch on the back surface are formed as a skip-stitch set by cooperation of a open eye needle (08-12-2010
112181000 Revolving-hook type 2
112183000 Reciprocating bobbin 2
20120137943BOBBIN AND SEWING MACHINE - A bobbin detachably installed into an inner hook of a sewing machine is disclosed. The bobbin includes a bobbin shaft; and a pair of flanges that are provided at both axial ends of the bobbin shaft. The bobbin shaft is cylindrical and includes a first opening and a second opening defined on axial ends thereof, the bobbin shaft being provided with a restriction member in a proximity of either of the first and the second opening to allow attachment of the bobbin to the inner hook through the first opening.06-07-2012
20130199429HOOK SYSTEM FOR A SEWING MACHINE - For the continuous drive of a hook of a sewing machine, two drive cams (08-08-2013
112185000 Shuttle type 1
112186000 Shuttle replenishing 1
20160010253Automated Bobbin Exchanger Device01-14-2016
112197000 Chain or double chain 8
20080308027Sewing machine - A lower end of a thread guide lever, which is rockably attached to a lower looper and supports a thread pipe, and an air ejecting unit, which faces a thread inserting hole of the thread pipe and ejects air toward the thread inserting hole, are coupled via a coupling member so that they are interlocked with each other. The coupling member is moved such that a discharging port of an air nozzle is positioned at an ejecting position close to the thread inserting hole when a thread discharging hole is positioned at a threading position which is coincident with a thread hole of a lower looper, and such that the air nozzle is moved to a standby position when the thread discharging hole is moved to a retreating position.12-18-2008
20130092066METHOD FOR OPERATING A CHAIN STITCH SEWINTG MACHINE AND CHAIN STITCH SEWING MACHINE - A method for operating a chain stitch sewing machine and a chain stitch sewing machine, the chain stitch sewing machine having a pair of sewing members comprising a needle which pierces a sewing material and a gripper disposed below a sewing material rest, which can be moved along a movement path, where an upper thread is guided with the needle through the sewing material resting on the sewing material rest, which is linked to a lower thread. The lower thread is fed to a retaining element and is held in said element that is moved with regard to its direction of movement and/or speed of movement to the sewing material rest according to a movement path of a pivoting movement of the gripper in particular along a circular-arc-segment-shaped movement path.04-18-2013
112199000 Oscillating or reciprocating looper 5
20090038519CHAIN-STITCH SEWING MACHINE - Chain-stitch sewing machine includes: a looper provided under a needle plate and having a thread lead-in port and thread lead-out port, the looper being rotationally driven in synchronism with a sewing operation; a plurality of thread feed ports connecting to different thread supply sources; and a connecting member having a thread passage, the connecting member selectively connecting any one of the plurality of thread feed ports to the thread insertion port of the looper via the thread passage. Threading mechanism passes the sewing thread, fed via the thread feed port connected by the connecting member to the thread insertion port of the looper, into the thread insertion port and causes the sewing thread to be taken out via the inserted thread lead-out port of the looper.02-12-2009
20120210922Gas Carrying Threading Device of Sewing Machine - Pressurized gas for carrying looper thread by gas is generated by gas supply pump operated by changing over a sewing-machine motor, which drives stitch forming device, looper threading is performed through loopers by one-touch operation. Gas carrying threading device of sewing machine, comprising: looper thread introduction mechanism inserts looper thread guided to loopers; hollow looper thread guide extends from looper thread introduction mechanism to looper thread inlets and has looper thread guide outlets; gas supply pump for performing looper threading by carrying looper thread by gas from looper thread introduction area through hollow looper thread guide to looper thread loop-taker point outlets; clutch for transmitting power from sewing machine motor M to drive shaft which drives stitch forming device including loopers at time of stitch formation or to gas supply pump at time of looper threading.08-23-2012
20140083344GAS CARRYING THREADING DEVICE OF SEWING MACHINE - A threading to a looper is performed with one-touch operation. A looper threading/sewing changeover mechanism 03-27-2014
20140190383GAS CARRYING THREADING DEVICE OF SEWING MACHINE - When performing the threading to the looper by one-touch operation, the abnormal changeover to the stitch forming state of the looper threading/stitch forming changeover mechanism during the gas supply operation of the gas supply pump is prohibited. The device comprises: a clutch (07-10-2014
20160040339SEWING MACHINE - A sewing machine includes a horizontal hook that is held within an outer hook and an accommodating portion of the outer hook that includes a spiral-shaped columnar portion to which the thread loop captured by the hook point is wound. The sewing machine also includes a chain looper that guide the thread loop induced in spiral shape upward, and an inner hook for chain stitching that is supported by the outer hook that restricting upward movement of the thread loop drawn into the interior of the outer hook.02-11-2016
112201000 Rotating looper 1
20080271658Sewing Machine and Sewing Element - This invention relates to a sewing machine, in particular a chain stitch or a double chain stitch sewing machine and preferably a multiple needle chain stitch or a multiple needle double chain stitch sewing machine employing three stitch forming sewing elements, namely a needle, a looper, and a spreader, with said spreader spreading a thread triangle of a looper thread in which the needle carrying a needle thread plunges for the connection of the needle thread to the looper thread, and with said sewing elements being driven through at least one driving means. The invention further relates to a sewing element for a sewing machine, in particular a chain stitch or a double chain stitch sewing machine, preferably a multiple needle chain stitch or a multiple needle double chain stitch sewing machine, said element consisting of a spreader that spreads a thread triangle of a looper thread in which a needle carrying a needle thread plunges for the connection of the needle thread to the looper thread. For further improving a sewing machine or a sewing element of the above-mentioned type in such a way that a collision of the sewing elements of the sewing machine will not cause any serious damage to the sewing machine and stop periods as a consequence thereof, it is provided that the sewing elements are formed such that at least one sewing element, in particular the spreader, will dodge or break at a predetermined breaking point in the case of a collision with a second sewing element, in particular the needle, due to its design and/or material properties.11-06-2008
112303000 Feeding work material 12
112304000 By endless conveyor 1
20110114001Conveying Device and Sewing Machine Comprising Said Device - Conveying device to be mounted on a sewing machine comprising a plate to be constrained to a base of the sewing machine, a conveyor belt mounted on two rollers constrained to a supporting structure so as to rotate, the supporting structure being coupled with the sewing machine, so that the conveyor belt is adjacent to the plate, and motor means connected with the conveyor belt and suited to put said belt in motion so that a cloth arranged between the plate and the conveyor belt translates when the conveyor belt is put in motion. The conveying device comprises at least a pressing element actuated by a piston of a cylinder which comprises elastic means and is constrained to the supporting structure of the conveyor belt, said cylinder being connected with a pressure control system. The pressure control system adjusts the pressure acting on the cloth to be conveyed since the elastic means are adjustable through the same system and the pressing element is in contact with the portion of the plate and/or belt.05-19-2011
112307000 Work of indeterminate length 1
20150354115SIDE CURTAIN AIRBAG AND METHOD AND APPARATUS FOR MANUFACTURING A SIDE CURTAIN AIRBAG - An apparatus for forming a seam of an inflatable cushion. The apparatus having: a means for securing a first portion of material and a second portion of material together to define the seam of the inflatable cushion, wherein an inner surface of the first portion is secured to an inner surface of the second portion only by a plurality of stitches; and a first means for continuously feeding a first strip of material into the apparatus forming the seam such that the first strip of material is secured to an outer surface of either the first portion of material or the second portion of the material of the inflatable cushion when the seam is formed and wherein the first strip of material is secured thereto only by the plurality of stitches, and wherein the first strip of material is fed from a spool of the first strip of material.12-10-2015
112312000 Plural differential feed means 4
112313000 Having adjustment feature 4
20090320729Bi-directional seaming machine - A seaming machine for seaming segments of sheet material to one another to form larger sheets includes a frame defining a sheet-receiving area and a pair of spaced seaming devices on opposed sides of the sheet-receiving area for respectively seaming opposed edges of the segments of sheet material to one another. The frame typically defines a table-receiving space for a table to support the sheet segments. The machine provides for the seaming of multiple sheet segments while the sheet segments remain atop the table or another work surface. Relative back and forth movement between the frame and work surface facilitate the process.12-31-2009
20120060735FEED MECHANISM THAT ADVANCES FABRIC - A feed mechanism that advances fabric comprises at least one dog that mechanically advances the fabric toward a sewing head and at least one actuator that is coupled to and actuates the at least one dog in a servo controlled motion so that the sewing head sews the fabric at a desirable position.03-15-2012
20160160415DIFFERENTIAL FEEDING MECHANISM FOR A SEWING MACHINE - A differential feeding mechanism for a sewing machine employs a differential mechanism to move first and second toothed bars. The differential mechanism includes a first link member to drive a first toothed bar, a second link member, and a third link member to drive a second toothed bar. The third link member is provided with an adjustment groove, in which being slidably disposed a slide member which can be adjusted in position with respect to the third link member. Adjusting the position of the slide member can change the fulcrum of the third link member and the swing amplitude of the two ends of the third link member, which consequently adjusts the differential feed of the first and second toothed bars.06-09-2016
20160251791SEWING MACHINE09-01-2016
112314000 Having adjustment feature 5
20140090586UPPER FEED DEVICE AND SEWING MACHINE - An upper feed device is configured to be arranged above a bed of a sewing machine and feed a work cloth. The upper feed device includes a feed portion, a mechanism arrangement portion, and a drive portion. The feed portion includes a first feed mechanism and a second feed mechanism and is configured to feed the work cloth in a feed direction. The first feed mechanism and the second feed mechanism are arranged side by side in a first direction, which is parallel to a top surface of the bed and orthogonal to the feed direction. The mechanism arrangement portion is configured to arrange the first feed mechanism and the second feed mechanism in different positions in a second direction, which is orthogonal to the top surface of the bed. The drive portion is configured to drive the first feed mechanism and the second feed mechanism in synchronization.04-03-2014
112315000 Stitch length 1
112316000 Reversible feed direction 1
20080308028Feed direction change assembly for sewing machine - The purpose of this invention is to change the direction of the feed so that the user/operator can now use the free arm of the sewing machine to the optimum advantage. Heretofore, the conventional domestic free arm sewing machine has been limited to sewing in a lateral direction across the free arm, the use of this invention allows the machine to be used so that tubular shaped garments can travel along and around the free arm of the sewing machine thus sewing can be accomplished with any out side seams, something heretofore impossible with a conventional free arm domestic sewing machine12-18-2008
112317000 Reversible feed direction 2
20130068146Guiding Structure For A Cloth Feeding Mechanism - A guiding structure for a cloth feeding mechanism which is disposed on a base below a needle plate of a sewing machine, a feeding dog driven by the cloth feeding mechanism is mounted on a mounting seat. The guiding structure comprising a first guiding portion formed on the mounting seat and a second guiding portion formed on a guiding device, the first and second guiding portions cooperate with each other to guide the feeding dog to move in the X-axis direction, so that the cloth can be fed precisely along the predetermined path to ensure good sewing quality.03-21-2013
20150090167DIRECT DRIVE CLOTH FEEDING MECHANISM OF SEWING MACHINE - A direct drive cloth feeding mechanism of a sewing machine includes a cloth feeding structure, a vertical driving structure and a direction adjustment structure. The cloth feeding structure includes a swing shaft and a cloth feeding teeth member. The vertical driving structure includes an eccentric shaft connected to the cloth feeding teeth member, and an eccentric cam disposed on the eccentric shaft. The direction adjustment structure includes a stepping motor, and a rotating shaft driven by the stepping motor to rotate and switch between a first position and a second position. When the stepping motor directly drives the rotating shaft to the first position, the cloth feeding teeth member performs a forward feeding process. When the stepping motor directly drives the rotating shaft to the second position, the cloth feeding teeth member performs a reverse feeding process.04-02-2015
112318000 Rotary feed 1
20110308439Sewing machine - A sewing machine includes a presser foot (12-22-2011
112324000 Feed dog structure 1
20120079974Feed Dog Device for a Sewing Machine - A feed dog device for a sewing machine includes a feed dog mount mounted under a needle plate and having a feed dog mounted thereon to permit the feed dog to extend through slots in the needle plate. The feed dog mount is coupled with a lever through a force transmitting unit to couple an increased torque generated by a pivotal movement of the lever to the feed dog mount so as to enable a weight end of the lever to drive the feed dog mount to move reciprocatingly in a transverse direction perpendicular to a normal feeding direction of a fabric. The lever is actuated by a cam follower with a torque generated as a result of transmission through a rotary cam member which is rotated with an output shaft of the drive member. Since the feed dog can be reciprocatingly moved in the transverse direction, the sewing machine can perform a variety of sewing operations.04-05-2012

Patent applications in all subclasses STITCH FORMING

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