Method of preventing multi-strand chain stitch seam releasing, device for prevention of seam releasing for multiline chain stitch sewing machine and design of multiline chain stitch

FIELD: textile.

SUBSTANCE: disclosed is method of preventing multi-strand chain stitch seam releasing. Normal sewing stops by looper installation in motion state advanced forward position, wherein needle thread loop is trapped by looper, subjected to retention in looper motion path front end position closer than to needle falling position, it is maintained until needle falling through needle thread loop, caught by looper. Then needle thread loop is released from retention position, allowing to realize sewing action at least in one stitch, thus allowing needle thread loop to be self-engaged with needle thread loop held by needle.

EFFECT: this undoubtedly reliably prevents occurence of multi-strand chain stitch seam releasing, formed by single needle, regardless of tension applied to thread needle and looper thread.

7 cl, 29 dwg

 



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: hook for the thread and thread holder of the looper are mounted on the back side of the position of lowering the needle of the sewing machine. Upon completion of the conventional seam the hook for the thread and thread holder of the looper are rotated and moved close to the looper. The detail of the hook, provided at the tip of the hook for the thread, keeps the needle thread loop captured by the looper and places it on the extended end part of the looper at a distance from the position of lowering the needle, and the thread-receiver provided on the tip of the thread holder of the looper, keeps the looper thread stretched from the looper to the fabric, and places it in the front part at a distance from the position of lowering the needle. While sewing, the sewing machine with at least one stitch supports the position of the needle thread loop and the looper thread.

EFFECT: improvement of the method.

18 cl, 22 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to light industry and can be used for production of sealed joints in the manufacture of products from felt to increase the heat-protective and deformation and strength properties of the products. The method of production of thread connections of parts made of felt comprises forming thread connection and its sealing, comprises additional preparing the part edges by deflating their thickness at an angle of α=30°-45°, which is set according to the properties of the materials used, such as: type of felt, its structure and thickness; making thread connection in the form of 4 or 5-thread flat seam with a frequency of stitching of 3-6 stitches/cm, and the sealing of thread connection is carried out by uniform applying of the sealant in the seam area with the flow of 0.03-0.04 g/cm2 followed by drying. The proposed method enables to improve the hygienic, operational and aesthetic properties of the thread connection. Sealing is carried out without additional mechanical, thermal or chemical effect on the joined materials, and also without the use of additional auxiliary materials, namely, adhesives, sealing tape, which enables to reduce material costs in the manufacture of the perform of shoe upper of felt.

EFFECT: increase in heat-protective and deformation and strength properties of products.

2 dwg, 5 tbl

FIELD: textiles, paper.

SUBSTANCE: sewing machine 1 comprising two needles comprises a platform 3, a rack 5, a console 6, a needle shaft 11 which is located on the front part of the console 6, two sewing needles 13, 14 which are attached to the needle shaft 11, two horizontal hooks 15 and 16 which grasp the corresponding loops of needle threads of two sewing needles 13, 14, and a moving member 21 which moves the sewn material 40 in a direction approximately orthogonal to the platform 3. In the sewing machine 1 comprising two needles the sewing needle 13 which is situated at the location more remote from the rack 5, is situated closer to the side of the displacement of the sewn material 40 than the sewing needle 14 which is located at the location closer to the rack 5.

EFFECT: improvement of strength of the convex curved part due to bringing the pairs of stitches closer to each other, when sewing the sewn product that contains a convex curved part.

3 cl, 28 dwg

FIELD: textile, paper.

SUBSTANCE: adjusting compartment is formed by two partitions, sections of a material of outer and inner layers of a shell and by a facility for fixation of adjusting compartment width. The width of the outer layer of the adjusting compartment shell material (aadj) is within the limits of a0<aadj<(2hp+a0), where hp - partition width, a0 - minimum width of the facility for fixation of the adjusting compartment width, defined by technical characteristics of the adjustment facility, and width of the part of the inner layer of the shell material forming the adjustment compartment is ain≈a0. Stiffness of the middle part along the partition width increases by an adhesive, thread or other methods of duplication, and also by using stiff inserts, installed into special pockets on a partition.

EFFECT: improved hygienic parameters of garments with volume non-coherent heat insulation materials, variation of thickness in accordance to change of environmental conditions and reduced specific flow of a valuable heat insulation material for production of specified heat-shielding properties.

3 cl, 5 dwg

FIELD: textile, paper.

SUBSTANCE: method for formation of waterproof filar joint consists in application of sealant onto shuttle thread, closing segments of garments by shuttle stitching and curing. Sealant is represented by aqueous solution of acrylic lightly crosslinked thickener and self-cross-linking binding preparation with concentration of 40-80%. When interacting with water, chemical composition swells, increasing in volume, and after drying it returns into initial volume state, which provides for high hygienic properties of clothes due to change in water impermeability of filar joints as ambient humidity changes.

EFFECT: composition binds large amount of water, in process of thermal treatment it produces spatial net structure, which pierces chains of acrylic thickener and provides for adhesion of polymer film to fibre of sewing thread.

2 dwg, 2 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention relates to clothing equipment and can be used to manufacture special-purpose garments and domestic water-resistant clothes made of textile materials having waterproof finishing workmanship as well as of the materials with film coatings. The device has a tank for the sealing compound, compressor, pressure controller, pipeline system, air suction system and nozzles. In order to ensure a required level of point positioning of the sealing compound in places where the thread joints get penetrated by the needle along the thread seam the device structure houses an additional controller connected to the rotation angle sensor installed on the sewing machine shaft. The controller uses its other outlet to connect to an air solenoid valve that uses the air-driven pipeline to connect to the tank containing the liquid-phase sealing component.

EFFECT: invention ensures control over the required level of point positioning of the sealing compound in places where the thread joints get penetrated by the needle.

4 dwg

FIELD: sewing industry.

SUBSTANCE: apparatus has looper thread hanging hook located in the vicinity of looper end part and disposed upon movement to left-hand front side in right-hand position and on rear side of needle falling site, and hook moving forward and returning back in the same direction, when looper is disposed at right side and on rear side relative to needle falling site. Method involves moving looper to position for advancement at end parp of sewing operation, and urging looper thread hanging hook to advance and return back for catching of looper thread running to rear side of looper, and for holding it on rear side relative to needle falling site; after sewing by making at least one stitch, urging thread cutting hook disposed in said position to advance and return back for catching of looper thread running toward rear side of looper by means of hook first tip portion and for gripping of needle threads and looper thread held by looper thread hanging hook by means of looper second mid portion; providing joint cutting of these threads due to sliding contacting thereof with thread cutting knife.

EFFECT: reduced dismantling space and, thereby, wider operational capabilities of apparatus and simplified method.

6 cl, 14 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: sewing industry, in particular, equipment for overstitching edges of carpets and other thickened articles.

SUBSTANCE: edge overstitching machine has housing 1 incorporating main shaft 2 onto which are put connecting rod 3 of kinking device comprising ring 4, eccentric 5, bushing 6, and connecting rod 7 of stretcher comprising of ring 8, eccentric 9 and bushing 10, needle guide 11 with connecting rod 12 of needle guide 11, material advancement rocker comprising ring 13, eccentric 14, clamp 15 put onto rings 13. Working surface of clamp 15 is made in the form of toothed surface adapted for engagement with material and for reciprocation. Apparatus is further provided with transverse shafts 16, 17 connected with shafts 18, 19 caused to slide by means of levers 20, 21, 22, 23. Needle guide is fixed on upper right part of housing 1 through bushing 24 put onto shaft 25, and is formed as lever with needle clamp 26 arranged at lever end. Needle guide 11 is connected through pivot joint 27 with connecting rod 12 of needle guide 11 to provide for reciprocation.

EFFECT: simplified construction, reduced weight and dimensions, increased wear-resistance and service life of machine.

4 dwg

FIELD: sewing industry, in particular, construction of small-sized sewing machines with single-thread stitch.

SUBSTANCE: method involves introducing curved needle with thread inserted into needle eyelet into fabric layers to be joined; turning needle until it exits fabric at a distance from site where it was introduced, and forming loop from thread by moving said needle in reverse direction; seizing loop by its one side, providing running thereof around other side and drawing it through loop; thereafter, ceasing displacement of needle to the initial position and tightening node; repeating all mentioned steps at distance equal to stitch pitch. Sewing machine has needle guiding mechanism, looper mechanism and toothed rack. Needle guiding mechanism has base, guide fixed on base, rack movable along guide and pivotally connected with needle holder having curved needle. Needle holder is moved relative to rack by means of tie-rod and rack is also movable relative to base by means of tie-rod. Looper mechanism has base pivotally connected to bar, looper provided with nose part, and thread stretching hook with axis of rotation. Base is turned by means of tie-rod and hook is also turned by means of tie-rod. Upon passage of needle through fabric and turning of looper base around axis, looper nose part draws out thread. Once hook is turned, loop is formed, said loop being tightened on thread following it during reversal of needle.

EFFECT: increased precision in forming of single-thread stitch, provision for producing of readily unraveled stitch and reduced intensity of manual labor.

6 cl, 16 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: clothing industry; methods and equipment for production of the edge-overlock two-thread buttonhole stitch.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to the method of production of the edge- two-thread buttonhole stitch and to the edge-overlock two-thread buttonhole stitch sewing machine for the method realization. The invention is dealt with the field of sewing and may be used at production of garments. The overlock two-thread buttonhole stitch is gained by the material edges-basting from below by the needle thread and from above by the looper thread with formation of the line of the stitches sequentially arranged along the edge of the material. For this purpose the needle thread by means of the needle arranged at an angle to the direction of the material movement is pulled through the material and from below in the formed overlock loop of the needle thread by the move from behind the needle introduce into it the thread of the looper moving in the plane perpendicular to the edge of the material. For this purpose the looper is moving behind the needle and from below using the U-turn introduces the needle thread into the loop-overlock, hooks it and stringing it onto the looper pull the thread beyond the edge of the material. After the needle coming from the material the thread of the looper is transferred by the looper from below upward under the needle simultaneously moving the material by the value of the stitch. Then through the formed loop-overlock of the thread of the looper and through the material using the needle pull the needle thread, hook by it the loop-overlock of the thread of the looper and then the thread of the looper is drawn beyond the edge of the material, drop from the thread looper the earlier hooked loop of the needle thread exercise the stitch tightening. After that the looper with the thread again introduce into the formed loop-overlock of the needle thread from below the material. The sewing machine for fulfillment of the edge-overlock buttonhole stitch contains the gear for relocation of the needle, which connecting-rod is connected to the arm of the rocker, the other arm of which is hinged to the link of the drive of the needle carrier. The needle carrier is mounted at an angle to the direction of the material movement. One end of the shaft pf the rocker is fixed in the body, and the other - in the rotating bush made jointly with the eccentric of the manual rise of the presser for the hold-down of the material. The knife gear contains the connecting-rod and the roller, on the end of which there is the fixed lever with the knife. The gear of the looper contains the lever connected by the ball hinge with the connecting-rod and the rocker, on one end of which there is the fixed looper, and its other end is pivotally coupled to the lever arranged on the shaft of the crank. The gear of relocation of the material additionally contains the spring for provision of the kinematic link of the bed with the eccentric of the toothed bar rise.

EFFECT: the invention ensures the improved method and the increased efficiency of operation of the sewing machine for fulfillment of the edge-overlock buttonhole stitch.

2 cl, 8 dwg

FIELD: sewing industry.

SUBSTANCE: apparatus has looper thread hanging hook located in the vicinity of looper end part and disposed upon movement to left-hand front side in right-hand position and on rear side of needle falling site, and hook moving forward and returning back in the same direction, when looper is disposed at right side and on rear side relative to needle falling site. Method involves moving looper to position for advancement at end parp of sewing operation, and urging looper thread hanging hook to advance and return back for catching of looper thread running to rear side of looper, and for holding it on rear side relative to needle falling site; after sewing by making at least one stitch, urging thread cutting hook disposed in said position to advance and return back for catching of looper thread running toward rear side of looper by means of hook first tip portion and for gripping of needle threads and looper thread held by looper thread hanging hook by means of looper second mid portion; providing joint cutting of these threads due to sliding contacting thereof with thread cutting knife.

EFFECT: reduced dismantling space and, thereby, wider operational capabilities of apparatus and simplified method.

6 cl, 14 dwg

FIELD: textile, paper.

SUBSTANCE: invention relates to clothing equipment and can be used to manufacture special-purpose garments and domestic water-resistant clothes made of textile materials having waterproof finishing workmanship as well as of the materials with film coatings. The device has a tank for the sealing compound, compressor, pressure controller, pipeline system, air suction system and nozzles. In order to ensure a required level of point positioning of the sealing compound in places where the thread joints get penetrated by the needle along the thread seam the device structure houses an additional controller connected to the rotation angle sensor installed on the sewing machine shaft. The controller uses its other outlet to connect to an air solenoid valve that uses the air-driven pipeline to connect to the tank containing the liquid-phase sealing component.

EFFECT: invention ensures control over the required level of point positioning of the sealing compound in places where the thread joints get penetrated by the needle.

4 dwg

FIELD: textile, paper.

SUBSTANCE: method for formation of waterproof filar joint consists in application of sealant onto shuttle thread, closing segments of garments by shuttle stitching and curing. Sealant is represented by aqueous solution of acrylic lightly crosslinked thickener and self-cross-linking binding preparation with concentration of 40-80%. When interacting with water, chemical composition swells, increasing in volume, and after drying it returns into initial volume state, which provides for high hygienic properties of clothes due to change in water impermeability of filar joints as ambient humidity changes.

EFFECT: composition binds large amount of water, in process of thermal treatment it produces spatial net structure, which pierces chains of acrylic thickener and provides for adhesion of polymer film to fibre of sewing thread.

2 dwg, 2 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: adjusting compartment is formed by two partitions, sections of a material of outer and inner layers of a shell and by a facility for fixation of adjusting compartment width. The width of the outer layer of the adjusting compartment shell material (aadj) is within the limits of a0<aadj<(2hp+a0), where hp - partition width, a0 - minimum width of the facility for fixation of the adjusting compartment width, defined by technical characteristics of the adjustment facility, and width of the part of the inner layer of the shell material forming the adjustment compartment is ain≈a0. Stiffness of the middle part along the partition width increases by an adhesive, thread or other methods of duplication, and also by using stiff inserts, installed into special pockets on a partition.

EFFECT: improved hygienic parameters of garments with volume non-coherent heat insulation materials, variation of thickness in accordance to change of environmental conditions and reduced specific flow of a valuable heat insulation material for production of specified heat-shielding properties.

3 cl, 5 dwg

FIELD: textiles, paper.

SUBSTANCE: sewing machine 1 comprising two needles comprises a platform 3, a rack 5, a console 6, a needle shaft 11 which is located on the front part of the console 6, two sewing needles 13, 14 which are attached to the needle shaft 11, two horizontal hooks 15 and 16 which grasp the corresponding loops of needle threads of two sewing needles 13, 14, and a moving member 21 which moves the sewn material 40 in a direction approximately orthogonal to the platform 3. In the sewing machine 1 comprising two needles the sewing needle 13 which is situated at the location more remote from the rack 5, is situated closer to the side of the displacement of the sewn material 40 than the sewing needle 14 which is located at the location closer to the rack 5.

EFFECT: improvement of strength of the convex curved part due to bringing the pairs of stitches closer to each other, when sewing the sewn product that contains a convex curved part.

3 cl, 28 dwg

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