EP0669415A1 - Schlingenfänger und Nähverfahren - Google Patents

Schlingenfänger und Nähverfahren Download PDF

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Publication number
EP0669415A1
EP0669415A1 EP95200450A EP95200450A EP0669415A1 EP 0669415 A1 EP0669415 A1 EP 0669415A1 EP 95200450 A EP95200450 A EP 95200450A EP 95200450 A EP95200450 A EP 95200450A EP 0669415 A1 EP0669415 A1 EP 0669415A1
Authority
EP
European Patent Office
Prior art keywords
hook
bearing rib
bobbin case
hook assembly
case basket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95200450A
Other languages
English (en)
French (fr)
Other versions
EP0669415B1 (de
Inventor
Tokuzo C/O Hirose Manufacturing Co.Ltd. Hirose
Kiyoshi C/O Hirose Manufacturing Co.Ltd. Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirose Manufacturing Co Ltd
Original Assignee
Hirose Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP6026985A external-priority patent/JPH07231992A/ja
Priority claimed from JP6246592A external-priority patent/JP3014021B2/ja
Application filed by Hirose Manufacturing Co Ltd filed Critical Hirose Manufacturing Co Ltd
Publication of EP0669415A1 publication Critical patent/EP0669415A1/de
Application granted granted Critical
Publication of EP0669415B1 publication Critical patent/EP0669415B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D05B57/10—Shuttles
    • D05B57/16—Shuttles with bobbin casings guided in tracks
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D05B57/10—Shuttles

Definitions

  • the present invention relates to a hook assembly which is incorporated into a lockstich sewing machine or the like as well as to a sewing process utilizing the hook assembly.
  • a bobbin case basket assembly which is incorporated into a lockstich sewing machine has a bearing rib formed on its outside circumference, which bearing rib is fitted into a groove shaped bearing raceway formed in the inside circumference of a hook, and only the hook is driven to rotate at a high speed while the bobbin case basket assembly is prevented from rotating downstream in the direction of rotation of the hook by a position finger secured to the body of the sewing machine.
  • hooks of industrial sewing machines are driven to rotate at high speeds of about 6,000-10,000 rpm.
  • An object of the present invention is to provide a hook assembly, wherein the friction of the rotating section is minimized without lubrication, so that the hook assembly can rotate smoothly and stably at a high speed.
  • the present invention relates to a hook assembly for a sewing machine comprising a bearing rib formed on the outside circumference of a bobbin case basket and extending circumferentially and a groove shaped bearing raceway for rotating the bobbin case basket, which surrounds the bobbin case basket, extends circumferentially, and fits the bearing rib, characterized in that at least either the bearing rib or at least its surface layer, or the groove shaped bearing raceway or at least its inside circumference layer is composed of a synthetic resin of such type that the rotating frictional force of a slide contact portion between the surface layer of the bearing rib and the inside circumference layer of the groove shaped bearing raceway into which the bearing rib is fitted, is lower in cases where no industrial sewing machine oil is present between said surface layer and said inside circumference layer than in other cases with the industrial sewing machine oil present therebetween.
  • the present invention further relates to a hook assembly for a sewing machine, characterized in that the hook assembly is a rotary hook assembly, and the hook is a rotary hook.
  • the present invention further relates to a hook assembly for a sewing machine, characterized in that the hook assembly is an oscillating shuttle hook assembly, and the shuttle hook is a oscillating loop taker.
  • the present invention further relates to the hook assembly for a sewing machine, characterized in that the synthetic resin is a liquid crystal polymer.
  • the present invention further relates to the hook assembly for a sewing machine, characterized in that the synthetic resin is an aromatic polyimide resin.
  • the present invention further relates to the hook assembly for a sewing machine, characterized in that the bobbin case basket comprises a cylindrical section for receiving the bobbin, and the bearing rib is an endless ring fittedly secured to the outside circumference of the cylindrical section.
  • the present invention further relates to the bobbin case basket assembly for a sewing machine, characterized in that the bearing rib section of a metal bobbin case basket assembly body comprises a bearing rib formed integrally with the synthetic resin-made coating member which covers from the loop-spreading section to the rail end section of the bearing rib section, and the coating member is stripped off the loop-spreading section of the metal bearing rib section upward in the direction of rotation of the hook.
  • the present invention further relates to a sewing process using the above hook assembly for a sewing machine which is rotated or oscillated, characterized in that at least either the bearing rib or at least its surface layer, or the groove shaped bearing raceway or at least its inside circumference layer is composed of a synthetic resin of such type that the rotating frictional force of a slide contact portion between the surface layer of the bearing rib and the inside circumference layer of the groove shaped bearing raceway into which the bearing rib is fitted, is lower in cases where no industrial sewing machine oil is present between said surface layer and said inside circumference layer than in other cases with the industrial sewing machine oil present therebetween; and sewing is performed without hook lubrication.
  • the bearing rib and/or the groove shaped bearing raceway in the hook assembly or at least its surface layer is composed of a synthetic resin such as a liquid crystal polymer, which has such properties that the rotating frictional force of a slide contact portion between the surface layer of the bearing rib and the inside circumference layer of the groove shaped bearing raceway into which the bearing rib is fitted, is lower in cases where no industrial sewing machine oil is present between said surface layer and said inside circumference layer than in other cases with the industrial sewing machine oil present therebetween, and accordingly a sewing machine incorporating such hook assembly can be operated without hook lubrication; because of the low friction between the bearing rib and the groove shaped bearing raceway the frictional heat is negligible and does not cause burning; thus staining of needle thread, bobbin thread, sewing material, etc. by hook lubricants may be prevented.
  • a synthetic resin such as a liquid crystal polymer
  • the rotating frictional force between the bearing rib and the groove shaped raceway in the hook assembly may be minimized, the force worked on a bobbin case assembly retaining portion may also be diminished, and therefore a loop of needle thread smoothly passes through the retaining portion without exerting great tension on the loop of needle thread, which can improve sewing quality.
  • the friction between the surface layer of the bearing rib composed of the liquid crystal polymer or aromatic polyimide resin and the inside circumference of the groove shaped bearing raceway can be reduced, thereby the durability of the hook rotating portion is improved as compared with the cases where teflon or other types of resin are used.
  • the oil-free type hook assembly of sewing machine according to the present invention not only consumes no lubricant such as industrial sewing machine oil, and as a result, a structure for feeding a lubricant is not required, which allows not only simpler construction, but also easier maintenance of the machine.
  • the present invention may also be applied to horizontal rotary hook assemblies, vertical rotary hook assemblies, oscillating shuttle hook assemblies, etc.
  • the bearing rib section of the metal bobbin case basket body comprises a bearing rib formed integrally with a synthetic resin-made coating member by, for example, outsert, from the loop-spreading section to the rail end section of the bearing rib section.
  • the coating member and the bearing rib section may be formed into one piece by exertion of great force so that the coating member does not easily peel off from the bearing rib section.
  • the friction between the bearing rib on the bobbin case basket and the groove shaped bearing raceway in the hook may be minimized; therefore, the hook assembly can be driven to rotate in a smooth and stable manner at a high speed. This eliminates the need for hook lubrication, thereby preventing staining of the thread, cloth, etc. by lubricants. Further, since in the loop-spreading section with which the thread is in sliding contact, the coating member is stripped off the metal bearing rib section upstream in the direction of rotation of the hook, the formation of "thread print" is prevented.
  • the coating member may be formed of a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like, productivity may be increased because of the ease of processing.
  • the hook may comprise a main hook body and a slide member.
  • the slide member may be composed of a synthetic resin having a low friction coefficient, and may be formed integrally with the hook body by, for example, insert or outsert molding.
  • insert or outsert molding Into the groove shaped bearing raceway wherein the slide member is formed in this manner is fitted the bearing rib on the bobbin case basket to lessen the frictional force of the bearing rib and groove shaped bearing raceway, and therefore, the hook assembly can be driven to rotate stably at a high speed.
  • Fig. 1 is a perspective view of a vertical rotary hook assembly 101 having an horizontal rotation axis A1 according to an embodiment of the present invention.
  • Fig. 2 is a sectional view showing the overall construction of the vertical rotary hook assembly 101 according to the embodiment.
  • Fig. 3 is a fragmentary perspective view of the rotary hook assembly 101.
  • Hook 102 is constructed in such a manner that a shaft 104 which is driven to rotate about a horizontal rotation axis A1 in the direction indicated by the arrow 103 is fixed with a bolt 105, and it is driven to rotate about the same axis of A1 of the shaft 104.
  • the hook 102 constructed in this manner receives a bobbin case basket assembly 106.
  • the bobbin case basket 106 comprises a cylindrical section 107, a bearing rib 108 formed on the outside circumference of the cylindrical section 107, a flange section 110 having a bobbin case basket rotation stop recess 109 formed at one end of the cylindrical section 107 at the side of the open end of the bobbin case basket (the right portion in Fig. 4), and a bottom 111 called a "bridge", which extends diametrally toward the other end of the cylindrical section 107.
  • a stud 112 stands and extends coaxially with the cylindrical section 107 toward the open end of the bobbin case basket, and on the stud 112 a bobbin 113 and a bobbin case 114 are engaged.
  • a protrusion 120 of the position finger 119 secured to a sewing machine body (not shown) is engaged with a gap in order to prevent the rotation of the bobbin case basket 106 during the rotation of the hook.
  • the gap is around 0.7mm in both axial and radial directions, and it is necessary for a needle thread to go through.
  • a needle dropping hole 121 through which a needle 122 is reciprocated along the axis A2, in synchronization with the rotation of the hook. Needle thread 123 which has passed through the needle 122 is seized by a hook point 124 formed on the hook 102, and goes around the bobbin case basket 106 to form a seam.
  • the bobbin case basket 106 is chiefly made of steel.
  • the hook 102 comprises a cylindrical section 125 to which the hook point 124 is formed, a base section 126 formed integrally with the cylindrical section 125 into which the shaft 104 is inserted, and a hook gib 127 secured with a screw (not shown) to the end of the cylindrical section 125 at the side of the open end.
  • a groove shaped bearing raceway 128 In the inside circumference of the cylindrical section 125 is formed a groove shaped bearing raceway 128 into which a bearing rib 108 is fitted.
  • the hook 102 is chiefly made of steel.
  • Fig. 6 is a sectional view of the bobbin case basket 106.
  • the bearing rib 108 is formed around a cylindrical section 107 of the bobbin case basket 106.
  • the bearing rib comprises a basic rib section 216 and a coating member 217.
  • the coating member 217 is not provided on the loop-spreading section 18; nonetheless, the loop-spreading section 18 may be covered with the coating member 217 according to another embodiment of the present invention.
  • the rail end section 19 may or may not be coated according to a further embodiment.
  • the main body of the bobbin case basket 106 may be formed of steel or a metal such as stainless steel, a synthetic resin, an inorganic material such as ceramic, or the like.
  • Fig. 7 is an enlarged sectional view of the bearing rib 108 and its vicinity of the bobbin case basket shown in Fig. 6.
  • the main body 204a and the basic bearing rib section 216 of the bobbin case basket 106 are made of steel, and a coating member 217 comprising a liquid crystal polymer with 0.3-0.5mm thickness t is formed integrally by, for example, outsert molding, on the outer surface 216a of the bearing rib section 216. Since the coating member 217 is formed to have a sufficient thickness in this manner, the durability is improved and dislocation is also prevented because a part of the coating member 217 is fitted in a groove 220 formed in the bearing rib section 216.
  • the liquid crystal polymer comprises a rigid molecular chain, and is highly orientated in the direction of its flow when molded, it has high strength and a high elastic coefficient, while since the molecular chain is stretched to the maximum degree in the direction of the orientation, little further stretching can be expected even upon exertion of tension, and thus excellent creep characteristics are produced.
  • the linear expansion coefficient is extremely low, and particularly the linear expansion coefficient in the direction of flow is as low as about 1 x 10- 5 cm/cm/ ° C. This linear expansion coefficient is lower than those of other synthetic resins by one order of magnitude, and this enables it to provide the same dimension stability as metals. Because of this stability, the dimensions change little even with changes in season-dependent ambient temperature and humidity.
  • liquid crystal polymers have outstanding weatherability, they may be used for a long time. It is also to be noted that because of the low degree of their phase change, which is attributable to similar structures in their molten and solidified states, the volumes of liquid crystal polymers change only a little even when solidified.
  • Fig. 8 is a partially cutaway sectional view of a liquid crystal polymer-made injection-molded piece 28 which is the coating member 217.
  • the liquid crystal polymer comprises an outer skin layer 29 with the molecular chains highly orientated in the direction of flow, an inner skin layer 30 and a poorly orientated core layer 31.
  • the thickness of the skin layers 29 and 30 are almost constantly 0.3-0.2 mm regardless of the thickness of the molded articles.
  • the liquid crystal polymer is plasticated by heating and forced into a sealable mold which is then sealed, and the polymer is cooled to a solid and then removed from the opened mold. Since the liquid crystal polymer may be molded into a coating member in this way, the processing is easy and the productivity is improved.
  • the liquid crystal polymers have excellent mechanical properties, including high strength and high elastic coefficients. This ease of orientation, however, tends to create an isotropy, and a reinforcing agent is preferably introduced into the rigid backbone so as to diminish the anisotropy. The ease of orientation also tends to produce fibrils peeled off from the respective skins 29 and 30.
  • the macrofibril 32 is 5 /1.m
  • the fibril 33 is 0.5 /1.m
  • the microfibril 27 is 0.05 /1.m. Since the liquid crystal polymers have a multi-layer structure comprising the outer skin layer 29, inner skin layer 30, core layer 31, etc. , their vibration damping properties are outstanding in spite of their high elastic coefficients.
  • the wear of the surfaces of the bearing rib 108 and the groove shaped bearing raceway 128 is minimal even after high-speed sewing operation without hook lubrication for an extended period of time, and the durability is exceptionally increased.
  • the coating member 217 is stripped off the loop-spreading section 18 of the steel-made bearing rib section 216, along which the thread passes, and thus the formation of "thread print" is prevented.
  • the contact stress in the direction of rotation 103 of the hook 102 between the side wall 109a of the recess 109 upstream and the position finger 120 (119) is minimized. Accordingly, the needle thread can pass through during its travel between the ends 109a and the position finger 120 at constant tension, and the sewing quality is improved.
  • Fig. 9 is an enlarged sectional view of a bobbin case basket 106 according to another embodiment of the present invention, taken along the section line VII-VII of Fig. 4.
  • the bobbin case basket main body 204a and the bearing rib section 236 with a hole 238 are made of steel, and on the outer surface 236a of the bearing rib section 236 there is provided a liquid crystal polymer-composed coating member 217 having a thickness t of 0.3-0.5 mm, formed integrally therewith, wherein a part of the liquid crystal polymer extends through and fills the hole 238.
  • Fig. 10 is a fragmentary perspective view of a bobbin case basket 71 according to a further embodiment of the present invention, for a vertical rotary hook assembly.
  • the bobbin case basket 71 basically comprises a bobbin case basket main body 72 and a built-in bearing rib member 74 secured to a fitting groove 73 formed in the outside circumference of the bobbin case basket main body 72.
  • Fig. 11 is a sectional view showing a fitting groove 73 and its vicinity.
  • the built-in bearing rib member 74 is fitted in the fitting groove 73.
  • This bearing rib member 74 comprises a bearing rib 79 and fitting protrusions 80 jutting inward in its radial direction.
  • fitting holes 91 are formed, which correspond to the protrusions 80.
  • the plurality of protrusions 80 and the fitting hole 91 are formed circumferentially and spaced, integrally with the bearing rib 79.
  • Fig. 12 is a perspective view showing the state of the assembled bobbin case basket 71.
  • a bearing rib member 74 is fitted in the bobbin case basket main body 72 in a secured manner.
  • the bearing rib member 74 is composed of a synthetic material which is a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like, and the endless annular bearing rib 79 has an elastic force, by which the bearing rib of the bearing rib member 74 may be forced, for fitting, into the cylindrical section 75 of the bobbin case basket main body 72 as indicated by the reference number 89 (Fig. 11).
  • the fitting protrusion 80 is fitted properly and elastically, in fitting holes 91. In this way the bearing rib 79 is secured to the bobbin case basket main body 72 in a detachable manner so that a worn one may be replaced.
  • the bearing rib member 74 may be secured to the bobbin case basket main body 72 so as to prevent removal for its replacement.
  • the inner surface configuration of the fitting holes 91 are almost identical to the outer surface configuration of the fitting protrusion 80, and this fitting protrusion 80 is properly fitted in the fitting holes 91 for fixation, as mentioned above.
  • the bearing rib member 74 is formed as an endless ring according to the foregoing embodiment, it may consist only of the bearing rib 79 which is roughly C-shaped.
  • the bearing rib of the bobbin case basket or at least its surface layer is made of a liquid crystal polymer or aromatic polyimide resin as demonstrated in the foregoing embodiments, and with this design, the low torque rotation of the hook due to the reduced friction coefficient between the bearing rib and the groove shaped bearing raceway which is an object of the present invention may be accomplished.
  • the use of the liquid crystal polymer or aromatic polyimide resin produces the following three important effects a, b and c:
  • Fig. 13 shows the results of experiments performed by the present inventors, since the bearing rib or at least the surface layer thereof is composed of a liquid crystal polymer, the friction coefficient between the surface layer and the groove shaped bearing raceway of the hook is lowered.
  • Lines L1 and L2 in Fig. 13 represent the rotating performance of the hook assembly of the constructions shown in Fig. 10 through Fig. 12 wherein the bobbin case main body 72 is made of steel, and the bearing rib member 74 composed of TEFLON (trade name), a fluororesin, is mounted thereon.
  • TEFLON trade name
  • fluororesin a fluororesin
  • the bobbin case basket main body 72 is made of steel, and the bearing rib member 74 is composed of a liquid crystal polymer. It has been proved that according to the oil-free construction, as indicted by Line L3, even under the condition of the high-speed rotation without hook lubrication, machines, the contact stress between the bobbin case basket stop recess 109 and the position finger 120 is lower than in the cases with hook lubrication, and it is also desirably lower than the cases of a conventional oil-feed type of steel-made vertical rotary hook assembly, shown by Line L5.
  • the bearing rib or at least its surface layer is made of a liquid crystal polymer, the clearance or gap between the bearing rib member 74 and the groove shaped bearing raceway of the hook is kept almost constant, thus minimizing the wear. It is apparent from Fig. 14 which shows the results of experiments performed by the present inventors.
  • the hook 102 is made of steel, and the bobbin case basket main body 72 is also made of steel.
  • Lines L13 and L14 represent the construction wherein the liquid crystal polymer-made bearing rib member 74 is fixed. In the construction shown in Fig. 14, the hook 102 rotates at a rotational speed of 6,500 rpm.
  • the oil-free constructions represented by Lines L11 and L12 where the bearing rib member is made of a fluororesin the increases in the clearance increase rapidly in a relatively short sewing time, and it cannot be used for the vertical rotary hook assemblies.
  • the bobbin case assembly with a bearing rib whose surface layer is composed of a liquid crystal polymer comprises a steel-made bobbin case basket main body 72 and a liquid crystal polymer-made bearing rib member 74.
  • the entirety of the bobbin case basket is made of steel in cases where the bearing rib is specified to have a steel-made surface layer.
  • the hooks were made of steel . In the experiments with hook lubrication industrial machine oil was used.
  • all the components of the bobbin case assembly may be made of synthetic resins such as liquid crystal polymers or aromatic polyimide resins, which possess the properties mentioned above.
  • synthetic resins such as liquid crystal polymers or aromatic polyimide resins
  • the strength of the bobbin case basket main body is weaker as compared with other embodiments.
  • any other synthetic resin not limited to liquid crystal polymers and aromatic polyimide resins, may be used as far as it has the above properties.
  • Fig. 18 is a partially enlarged sectional view of a bearing rib 108, a groove shaped bearing raceway 128 and their vicinity according to a further embodiment of the present invention.
  • a recess groove 130 is formed in the inside circumference of the hook 102, and a U-shaped section slide member 131 having 0.3-0.5mm thickness is fixed in this recess groove 130.
  • the slide member 131 is composed of a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like, of the same type as used in the foregoing embodiments. Also in this case the same improvement as in the case of other embodiments can be seen.
  • a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like
  • the present invention may be also extended for horizontal rotary hook assemblies.
  • the hook and bobbin case basket may be prepared from the same materials for the bearing rib.
  • Fig. 19 is a perspective view in a simplified version of an oscillating shuttle hook assembly 321 according to a further embodiment of the present invention.
  • Fig. 20 is a front view in a simplified version of a portion of the oscillating shuttle hook assembly 321.
  • the oscillating shuttle hook assembly 321 is constructed such that a loop-seizing member 310 provided in a fixed position is supported by fitting an oscillating loop taker 311 thereinto in a manner capable of oscillating with respect to the axis of rotation A2.
  • a bobbin case 313 is mounted over a stud 312 of the oscillating loop taker 311.
  • the bobbin case 313 houses a bobbin wound by bobbin thread 318.
  • a driver 314 is driven by an oscillating shaft 315 to rotate half a turn in each of alternating directions as indicated by arrows D1 and D2, while a needle 316 is reciprocated up and down in linkage with the movement of the oscillating shaft 315.
  • a position finger 317 is formed integrally with the bobbin case 313, and is fitted into a fitting recess of a bobbin case presser member secured to a machine body integrally with a machine bed and a throat plate 328. This construction prevents rotation of the bobbin case 313.
  • the driver 314 is not shown.
  • Fig. 21 is an enlarged sectional view in a simlified version of a portion of the oscillating shuttle hook assembly 321, taken along the section line XXI-XXI of Fig. 20.
  • the loop-seizing member 310 is constructed such that a shuttlerace ring 320 is detachably mounted on a shuttlerace body 319 with the aid of a set claw 341 which can be angularly displaced by manual operation.
  • the shuttlerace body 319 and the shuttlerace ring 320 together, form a bearing raceway 322.
  • a bearing rib 325 is constructed such that a surface layer 324 having a U-shape in cross section is secured to the outside circumference of a protrusion 323 circumsferentially extending from the oscillating loop taker 311.
  • the surface layer 324 is made of a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like.
  • the loop-seizing member 310 and the oscillating loop taker 311 may both be made of steel.
  • Fig. 22 shows a still further embodiment of the present invention.
  • a surface layer 326 is formed on the inside circumference of the bearing raceway 322 to which the bearing ring 325 of the oscillating loop taker 311 is fittedly secured.
  • the surface layer 326 is made of a synthetic resin such as a liquid crystal polymer, aromatic polyimide resin or the like.
  • the oscillating loop taker 311 and the loop-seizing member 310 may both be made of steel.
  • the surface layer 326 is comprised of a surface portion 331 having a L-letter shape in cross section secured to the shuttlerace body 319 and a planar surface portion 332 secured to the shuttlerace ring 320.
  • the provision of the surface layer 324 and the surface layer 326 lowers the frictional force between the loop-seizing member 310 and the oscillating loop taker 311. Accordingly, cloth and thread are free from staining by hook lubricants such as industrial sewing machine oil.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Detergent Compositions (AREA)
EP95200450A 1994-02-24 1995-02-23 Schlingenfänger und Nähverfahren Expired - Lifetime EP0669415B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2698594 1994-02-24
JP26985/94 1994-02-24
JP6026985A JPH07231992A (ja) 1994-02-24 1994-02-24 全回転かま
JP246592/94 1994-10-12
JP6246592A JP3014021B2 (ja) 1994-10-12 1994-10-12 工業用ミシンの無給油全回転かまの内かま
JP24659294 1994-10-12

Publications (2)

Publication Number Publication Date
EP0669415A1 true EP0669415A1 (de) 1995-08-30
EP0669415B1 EP0669415B1 (de) 2002-06-19

Family

ID=26364851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95200450A Expired - Lifetime EP0669415B1 (de) 1994-02-24 1995-02-23 Schlingenfänger und Nähverfahren

Country Status (6)

Country Link
EP (1) EP0669415B1 (de)
KR (1) KR0121874B1 (de)
CN (1) CN1042155C (de)
AT (1) ATE219533T1 (de)
DE (1) DE69527103T2 (de)
TW (1) TW316935B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19983955T1 (de) * 1999-05-28 2002-09-19 Hirose Mfg Co Ltd Umlaufender Greifer
JP4502788B2 (ja) * 2004-11-24 2010-07-14 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 水平回転釜
KR101484935B1 (ko) * 2014-01-03 2015-01-22 (주)신진스틸 재봉틀 윗실 루프형성촉진구
CN104060412B (zh) * 2014-04-28 2016-03-16 宁波市鄞州勇耀缝制机械有限公司 缝纫机旋梭的内梭及其制造工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348718A (en) * 1942-03-21 1944-05-16 Samuel A Bethune Shuttle case bearing
FR1116991A (fr) * 1954-08-18 1956-05-15 Phoenix Nahmaschinen A G Baer Perfectionnements apportés aux boucleurs à lunette pour machines à coudre
US2851978A (en) * 1952-03-26 1958-09-16 Husqvarna Vapenfabriks Ab Sewing machines
US4660487A (en) * 1984-03-14 1987-04-28 Maruzen Sewing Machine Co., Ltd. Loop taker for sewing machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6064777U (ja) * 1983-10-13 1985-05-08 ブラザー工業株式会社 全回転釜の中釜
JPS6170075A (ja) * 1984-09-12 1986-04-10 水島　繁三郎 形状記憶生糸の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348718A (en) * 1942-03-21 1944-05-16 Samuel A Bethune Shuttle case bearing
US2851978A (en) * 1952-03-26 1958-09-16 Husqvarna Vapenfabriks Ab Sewing machines
FR1116991A (fr) * 1954-08-18 1956-05-15 Phoenix Nahmaschinen A G Baer Perfectionnements apportés aux boucleurs à lunette pour machines à coudre
FR67797E (fr) * 1954-08-18 1958-03-18 Phoenix Nahmaschinen A G Baer Perfectionnements apportés aux boucleurs à lunette pour machines à coudre
US4660487A (en) * 1984-03-14 1987-04-28 Maruzen Sewing Machine Co., Ltd. Loop taker for sewing machines

Also Published As

Publication number Publication date
CN1124794A (zh) 1996-06-19
DE69527103T2 (de) 2003-01-16
DE69527103D1 (de) 2002-07-25
ATE219533T1 (de) 2002-07-15
CN1042155C (zh) 1999-02-17
EP0669415B1 (de) 2002-06-19
TW316935B (de) 1997-10-01
KR0121874B1 (ko) 1997-11-18
KR950025132A (ko) 1995-09-15

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