AT409639B - Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops - Google Patents

Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops Download PDF

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Publication number
AT409639B
AT409639B AT120498A AT120498A AT409639B AT 409639 B AT409639 B AT 409639B AT 120498 A AT120498 A AT 120498A AT 120498 A AT120498 A AT 120498A AT 409639 B AT409639 B AT 409639B
Authority
AT
Austria
Prior art keywords
needle
tongue
thread loops
sewing machine
twin
Prior art date
Application number
AT120498A
Other languages
German (de)
Other versions
ATA120498A (en
Original Assignee
Sahl Johannes
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 Sahl Johannes filed Critical Sahl Johannes
Priority to AT120498A priority Critical patent/AT409639B/en
Publication of ATA120498A publication Critical patent/ATA120498A/en
Application granted granted Critical
Publication of AT409639B publication Critical patent/AT409639B/en

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Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B73/00Casings
    • D05B73/04Lower casings
    • D05B73/12Slides; Needle plates

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

The needle plate (1) for a twin- or triple-needle interlock sewing machine, to sew a chain stitch seam with two or three threads, has two or three needle holes (2) with a forwards stitching tongue (3) between each pair of holes in the direction (V) of fabric travel. The tongue leaves free a thread guide gap (4). The needle plate, for a twin- or triple-needle interlock sewing machine, has a sliding path (8) at an upwards angle at the under side (6) towards the tip of the tongue for the thread loops (F). The angled sliding path has a flat buffer stretch (9) to prevent the thread loops moving immediately from the holding tongue and, at the same time, hold at least two thread loops.

Description

       

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 des Fadenführungsspaltes 4 Ausnehmungen 21 bilden und die Stichzungenseitenränder glatt bleiben. 



   Die Stichplatte 1 weist an der Unterseite 6 eine ansteigende, zur Zungenspitze 7 hin auslaufende Abgleitbahn 8 auf, welcher Abgleitbahn eine gegenüber der Abgleitbahnsteigung flachere Pufferstrecke 9 vorgeordnet ist. Durch diese Pufferstrecke 9 lässt sich beim Nähen ein sofortiges Abziehen und Abgleiten der durch das Zusammenwirken von Nadelfäden und Greiferfaden entstehenden Fadenschhngen verhindern und bei einer Pufferstreckenlänge von mindestens der doppelten Stichlänge sicherstellen, dass wenigstens zwei der Fadenschlingen F im Bereich der Pufferzone 9 verharren, bevor sie vom dem Vorschub unterworfenen Werkstück über die Abgleitbahn 8 zum Werkstück hin abgezogen werden.

   Dieses Ansammeln zweier oder mehrerer Fadenschlingen F verhindert das Auftreten grösserer Fadenspannungen im Schlingenbildungsbereich und   gewährleis-   tet so auf einfache Weise die Herstellung einer gleichmässigen und spannungsfreien Kettenstichnaht bester Elastizitätseigenschaften.



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 EMI1.1
 

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 of the thread guide gap 4 form recesses 21 and the stitch tongue side edges remain smooth.



   The throat plate 1 has on the underside 6 an ascending slideway 8, which runs towards the tip of the tongue 7, which slideway is preceded by a buffer section 9 which is flatter than the slideway slope. By means of this buffer section 9, an immediate pulling off and sliding off of the thread snaps resulting from the interaction of needle threads and looper thread can be prevented and, with a buffer section length of at least twice the stitch length, ensure that at least two of the thread loops F remain in the area of the buffer zone 9 before they are withdrawn from the workpiece subjected to the feed via the slideway 8 toward the workpiece.

   This accumulation of two or more thread loops F prevents the occurrence of larger thread tensions in the loop formation area and thus ensures in a simple manner the production of a uniform and tension-free chain stitch seam with the best elastic properties.


    

Claims (1)

PATENTANSPRUCH : Stichplatte für eine zwei- oder dreinadelige Interlock-Nähmaschine zum Nähen einer Ketten- stichnaht aus drei oder vier Fäden, mit zwei oder drei Nadeleinstichlöchern und jeweils einer zwischen zwei Einstichlöchern ausgehenden, sich in Vorschubrichtung unter Freilassung eines Fadenführungsspaltes vorwärts erstreckenden Stichzunge, die an der Unterseite eine anstei- gende, zur Zungenspitze hin auslaufende Abgleitbahn für die um die Stichzunge sich legenden Fadenschlingen bildet, dadurch gekennzeichnet, dass der Abgleitbahn (8) auf der Stichzunge (2) eine gegenüber der Abgleitbahnsteigung flachere Pufferstrecke (9) zum gleichzeitigen Auf- nehmen von wenigstens zwei Fadenschhngen (F) vorgeordnet ist.  PATENT CLAIM: Throat plate for a two- or three-needle interlock sewing machine for sewing a chain stitch from three or four threads, with two or three needle insertion holes and one each between two injection holes, in the feed direction, leaving one free Thread guiding gap forward stitch tongue, on the underside a rising, slid towards the tip of the tongue for those lying around the tongue Thread loops are formed, characterized in that the sliding track (8) on the stitch tongue (2) is preceded by a buffer section (9) which is flatter than the slope of the sliding track for simultaneous picking up of at least two thread loops (F).
AT120498A 1998-07-13 1998-07-13 Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops AT409639B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT120498A AT409639B (en) 1998-07-13 1998-07-13 Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT120498A AT409639B (en) 1998-07-13 1998-07-13 Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops

Publications (2)

Publication Number Publication Date
ATA120498A ATA120498A (en) 2002-02-15
AT409639B true AT409639B (en) 2002-09-25

Family

ID=3508875

Family Applications (1)

Application Number Title Priority Date Filing Date
AT120498A AT409639B (en) 1998-07-13 1998-07-13 Needle plate for a twin- or triple-needle interlock sewing machine has a tongue between the needle holes on the line of fabric travel, to hold the thread loops on an angled sliding path with a buffer zone to retain thread loops

Country Status (1)

Country Link
AT (1) AT409639B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027728A (en) * 1989-06-07 1991-07-02 Union Special G.M.B.H. Chaining-off device for multiple needle chainstitch sewing machines
US5398627A (en) * 1992-04-28 1995-03-21 Pegasus Sewing Machine Mfg. Co., Ltd. Thread chain and method and apparatus for drawing out the thread chain on multiple needle sewing machines
US5503094A (en) * 1995-02-27 1996-04-02 Tseng; Hsien-Chang Needle plate with movable tongues for sewing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027728A (en) * 1989-06-07 1991-07-02 Union Special G.M.B.H. Chaining-off device for multiple needle chainstitch sewing machines
US5398627A (en) * 1992-04-28 1995-03-21 Pegasus Sewing Machine Mfg. Co., Ltd. Thread chain and method and apparatus for drawing out the thread chain on multiple needle sewing machines
US5503094A (en) * 1995-02-27 1996-04-02 Tseng; Hsien-Chang Needle plate with movable tongues for sewing machine

Also Published As

Publication number Publication date
ATA120498A (en) 2002-02-15

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