EP0122690A1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

Info

Publication number
EP0122690A1
EP0122690A1 EP84300883A EP84300883A EP0122690A1 EP 0122690 A1 EP0122690 A1 EP 0122690A1 EP 84300883 A EP84300883 A EP 84300883A EP 84300883 A EP84300883 A EP 84300883A EP 0122690 A1 EP0122690 A1 EP 0122690A1
Authority
EP
European Patent Office
Prior art keywords
presser foot
rod
needle
arm
spring
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.)
Withdrawn
Application number
EP84300883A
Other languages
English (en)
French (fr)
Inventor
Roy Burton
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.)
Geoffrey E MacPherson Ltd
Original Assignee
Geoffrey E MacPherson 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
Application filed by Geoffrey E MacPherson Ltd filed Critical Geoffrey E MacPherson Ltd
Publication of EP0122690A1 publication Critical patent/EP0122690A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet

Definitions

  • This invention relates to sewing machines, particularly of the type capable of decorative embroidery, in which an auxiliary thread is supplied to the needle to be attached by the main sewing thread to the work piece.
  • the auxiliary thread is sewn flat to provide a bold line in an embroidery pattern.
  • the auxiliary thread is subjected to a positive feeding action so as to be formed into loops attached to the workpiece at only one portion of each loop so as to form a looped pile embroidery.
  • the looped pile produces a desirable decorative effect enabling large areas of pattern to be filled in relatively quickly.
  • a problem with the known machine is that control of the formation of the loops is difficult because of the problems ot coordinating the positive feeding action of the thread to the rate of progress of the needle across the workpiece. Satisfactory loop formation is not guaranteed.
  • EP-0 059 292A discloses a sewing machine having an auxiliary presser foot used in conjunction with the main presser foot to grip and release the auxiliary thread to form loops.
  • the movement of the auxiliary presser foot is controlled by micro-rams set in the adjacent station of the machine. This not only requires accurate control of the rams but also reduces the working capcity and flexi- - bility of multi-needle machines.
  • a sewing machine comprising a reciprocable sewing needle adapted to carry a main thread, a presser foot reciprocable with the needle into and out of contact with the fabric to be sewn, and supply means for supplying an auxiliary thread to the presser foot
  • the presser foot comprises first and second relatively movable parts spring biased together so as to restrain the passage of the auxiliary thread therebetween, the parts being separable, thereby freeing the passage of the auxiliary thread therebetween, by engagement with stop means during movement of the presser foot away from the fabric.
  • the needle is mounted on a vertical rod which is slidably-mounted in a support, said means for reciprocating the needle comprising a vertically reciprocating actuating arm which engages the rod on the downward stroke of the arm, and spring means are provided for biasing the rod and the presser foot upwardly away from the fabric, and the machine is characterised in that each part of the presser foot comprises a mounting arm slidably-mounted on the rod, a compression spring extends between adjacent portions of the mounting arms to bias the first part into contact with the second part, and the support carries a stop engageable by the mounting arm of the first part as the rod is moved upwardly, engagement of the stop by the said first part serving to compress the compression spring, thereby separating the two parts of the presser foot to allow the auxiliary thread to move freely therebetween.
  • the spring means comprise a first compression spring surrounding said rod and extending between the support and an upper portion of the mounting arm of the first part of the presser foot, a guide arm having an upper end slidably mounted on the rod and a lower end portion passing through the upper portion of said mounting arm and having a retaining head thereon, said guide arm being retained on said rod by an enlarged head portion of said rod, and a second compression spring, less readily compressible than the first spring, extending between the upper portion of said mounting arm and the upper end of the guide arm.
  • a plurality of reciprocable needle and presser foot assemblies are provided, selectively drivable by means of an actuating arm 1, as shown in Figure 1, attached to a vertically reciprocating drive shaft 2 which may be rotated about the longitudinal axis thereof so that the actuating arm 1 can engage any selected one of the assemblies.
  • Each assembly comprises a vertical slide rod 3 slidably mounted in a supporting bracket 4 and carrying at the lower end thereof a needle clamp 5 holding the sewing needle 6.
  • the presser foot 7 is mounted so as to reciprocate with the needle and comprises two relatively movable parts 140 and 141, the second part 141 having an upwardly extending arm 8 terminating at an intermediate point on the slide rod 3 with a portion 9 through which the rod passes.
  • a slide arm 10 extends between the portion 9 and the upper end 11 of the slide rod 3.
  • the slide arm 10 has a portion 10a which is attached to the upper end 11 and a downwardly extending portion 10b which passes slidably through the portion 9 of the arm 8, but has a retaining head 10c on the lowermost end thereof to prevent separation from the arm 8.
  • a first helical spring 12 extends between the supporting bracket 4 and the portion 9 of the arm 8, surrounding the slide rod 3.
  • a second helical spring 13 surrounds the slide rod 3 and extends between the portion 9 and the portion 10a of the slide arm 10. The first spring is more readily compressible than the second spring, so that when the upper end 11 of the rod 3 is pressed downwardly, the presser foot 7 moves with the rod until it meets the fabric on the bed of the machine. The second spring then compresses enabling the needle to be driven downwardly through the workpiece.
  • the first part 140 of the presser foot 7 is mounted adjacent to the second part 141 and externally thereof.
  • the first part 140 of the presser foot 7 has an upper arm 15 which passes slidably through the bracket 4 and is slidably secured to the arm 8 by means of a screw 16 passing through a vertical elongate slot (not shown) in the arm 8.
  • the first part 140 is therefore movable relative to the second part 141.
  • a third helical spring 17 surrounds the slide rod 3 between the arms of the two parts of the presser foot which surround the rod 3. In the position illustrated by Figure 1, this spring 17 is fully compressed.
  • the main thread 20 passes through the needle and into the workpiece 21 in conventional manner.
  • An auxiliary thread 22 is passed under the second part 141 of the presser foot 7 and through the needle hole in the first part 140 of the presser foot.
  • the auxiliary thread may be a relatively thick thread, compared with the main thread, such as a braided thread or even a twisted woollen yarn. Since the auxiliary thread 22 passes through the needle hole in the first part 140, as a stitch is formed by the main thread, the stitch passes through the auxiliary thread, thus holding it to the workpiece 21.
  • Figure 2 shows the needle and presser foot assembly at its uppermost point. A gap exists between the two parts 140 and 141 of the presser foot 7.
  • Figure 3 shows the commencement of the downward stroke of the slide rod 3.
  • the second part 141 of the presser foot has begun to move downwardly, but the needle 6 has not yet moved relative to that part 141.
  • the third spring 17 urges the first part 140 of the presser foot upwardly and this causes the portions surrounding the needle holes to close together, thus gripping the auxiliary thread between then.
  • the workpiece is moved forward by the machine, and continued downward movement of the slide rod 3 carries the gripped portion of the auxiliary thread 22 back down on to the workpiece 21, where further movement ot the slide rod 3 drives the needle downwardly through the auxiliary thread 22, thus stitching it to the workpiece 21, using the main thread 20.
  • the spring 17 is arranged to have sufficient force to retain the thread during the downward movement, but to allow the auxiliary thread to be drawn through the presser foot 7 during the return upward movement thereof towards the position shown in Figure 2. Also since the first part 140 of the presser foot is drawn upwardly again by the second part 141, via the third helical spring 17, this spring will also tend to recompress and this causes separation of the portions of the feet surrounding the needle holes. The separation allows the auxiliary thread to pass tnrougn more easily in forcing a furtner loop.
  • eacn needle and presser foot assembly of a multi-needle machine may be provided with a presser foot assembly as described above, and that the provision of the presser foot assembly will not impede normal operation of that assembly when the auxiliary thread is not present.
  • the capacity of the machine to change from one type of thread or colour of thread to another readily during an embroidering operation will not be affected, and different colours or types of looped pile embroidery as produced by the machine in accordance with the present invention can be carried out by such a multi-needle machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP84300883A 1983-02-12 1984-02-13 Nähmaschine Withdrawn EP0122690A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838303958A GB8303958D0 (en) 1983-02-12 1983-02-12 Sewing machine
GB8303958 1983-02-12

Publications (1)

Publication Number Publication Date
EP0122690A1 true EP0122690A1 (de) 1984-10-24

Family

ID=10537919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84300883A Withdrawn EP0122690A1 (de) 1983-02-12 1984-02-13 Nähmaschine

Country Status (3)

Country Link
EP (1) EP0122690A1 (de)
ES (1) ES8506365A1 (de)
GB (1) GB8303958D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1439252A1 (de) * 2003-01-15 2004-07-21 Chung-Sik Kim Vorrichtung zur Bildung einer Schleife oder eines Fadens in ein Stickrahmen und Stickrahmen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142840C (de) *
US1739397A (en) * 1927-02-23 1929-12-10 Maude E Johnson Sewing-machine attachment
FR1028003A (fr) * 1950-08-31 1953-05-19 Machine à broder
BE836912A (nl) * 1975-12-19 1976-04-16 Methode en inrichting voor het vervaardigen van tapijt met op gestikte zig-zag lussen
EP0059292A1 (de) * 1980-12-10 1982-09-08 Broderie De Mesnil Saint Pere S.A.R.L. Näheinrichtung mit zwei unabhängigen Pressfüssen, insbesondere zum Bilden und Aufnähen von Schleifen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142840C (de) *
US1739397A (en) * 1927-02-23 1929-12-10 Maude E Johnson Sewing-machine attachment
FR1028003A (fr) * 1950-08-31 1953-05-19 Machine à broder
BE836912A (nl) * 1975-12-19 1976-04-16 Methode en inrichting voor het vervaardigen van tapijt met op gestikte zig-zag lussen
EP0059292A1 (de) * 1980-12-10 1982-09-08 Broderie De Mesnil Saint Pere S.A.R.L. Näheinrichtung mit zwei unabhängigen Pressfüssen, insbesondere zum Bilden und Aufnähen von Schleifen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1439252A1 (de) * 2003-01-15 2004-07-21 Chung-Sik Kim Vorrichtung zur Bildung einer Schleife oder eines Fadens in ein Stickrahmen und Stickrahmen

Also Published As

Publication number Publication date
ES529664A0 (es) 1985-01-01
GB8303958D0 (en) 1983-03-16
ES8506365A1 (es) 1985-01-01

Similar Documents

Publication Publication Date Title
RU2555807C1 (ru) Способ предотвращения распускания шва, устройство предотвращения распускания шва и тип шва
KR102039777B1 (ko) 코드재를 봉착할 수 있는 자수 미싱
KR101252055B1 (ko) 재봉기
US5333565A (en) Thread cutting via reciprocating arm with pockets and a trimming plate
JP4995447B2 (ja) 偏平縫いミシン
CN110093723B (zh) 缝纫机
US4716846A (en) Sewing machine with workpiece holder for securing initial seam stitches
JP2000325683A (ja) ミシンの鳥の巣防止装置
JPH07194875A (ja) カバー・ステッチ無しの飾りステッチを作るための多針のミシンで連続鎖を形成する装置
EP0122690A1 (de) Nähmaschine
US5979346A (en) Automatic stitching apparatus
KR20210044869A (ko) 코드재를 봉착할 수 있는 미싱 및 코드 컷 장치
EP0405903B1 (de) Verfahren und Vorrichtung zum Abschneiden des Deckfadens einer Mehrnadelnähmaschine
CA2024141C (en) Satin stitch presser foot
JPH05208082A (ja) １層以上の被縫製物の縫製方法及びその方法を実施する縫製装置
GB2144156A (en) Improvements in or relating to stitches and method of, and apparatus for, producing them
JP3006841B2 (ja) 多本糸かがり縫い目を形成するためのかがり縫いミシン
JPH0734838B2 (ja) ルーパミシンの下糸把持装置
JPH0635700B2 (ja) ミシン
JP5086730B2 (ja) １本糸錠縫化ハンドステッチミシン
WO2005024109A1 (en) Device to automatically change the thread in a needle in textile machines, relative method and textile machine adopting said thread-change device
JP5481624B2 (ja) １本糸錠縫化ハンドステッチミシン
JPS6130627Y2 (de)
JPH0739669A (ja) 刺繍ミシンの上糸切断装置
JPH0366911B2 (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850705

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BURTON, ROY