ATE540151T1 - METHOD AND DEVICE FOR CUTTING THE NEEDLE AND THE LOOPIER THREAD ON DOUBLE LOCKSTITCH SEWING MACHINES WITH A HORIZONTAL PLANE REVOLVING LOOPPER - Google Patents

METHOD AND DEVICE FOR CUTTING THE NEEDLE AND THE LOOPIER THREAD ON DOUBLE LOCKSTITCH SEWING MACHINES WITH A HORIZONTAL PLANE REVOLVING LOOPPER

Info

Publication number
ATE540151T1
ATE540151T1 AT09768933T AT09768933T ATE540151T1 AT E540151 T1 ATE540151 T1 AT E540151T1 AT 09768933 T AT09768933 T AT 09768933T AT 09768933 T AT09768933 T AT 09768933T AT E540151 T1 ATE540151 T1 AT E540151T1
Authority
AT
Austria
Prior art keywords
thread
needle
looper
stitch
stitched product
Prior art date
Application number
AT09768933T
Other languages
German (de)
Inventor
Franz Gries
Hermann Rutz
Original Assignee
Pfaff Industriesysteme Und Maschinen Ag
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 Pfaff Industriesysteme Und Maschinen Ag filed Critical Pfaff Industriesysteme Und Maschinen Ag
Application granted granted Critical
Publication of ATE540151T1 publication Critical patent/ATE540151T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms

Landscapes

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

Abstract

The invention relates to a method and a device for separating the needle and looper threads on double-thread lockstitch sewing machines having a looper revolving about a horizontal plane, wherein after completing the seam the stitched product is moved further along by means of the feeder device by an amount that is shorter than the stitch length forming the seam, whereby in this position of the stitched product at least one further stitch (knotting stitch) is formed with the feeder device inactive, and in the unchanged position of the stitched product the needle thread loop is expanded by the looper during the formation of a partial stitch (cutting stitch), wherein the catch-thread device (14) is moved from an idle position positioned laterally behind the needle (5) to a movement reversing position along a movement path extending between the piercing hole (13) and the lateral walls (16) of the looper (1), and the catch-thread point (17) penetrates into the expanded needle thread loop such that both the arm of the needle thread loop for guiding the stitched product and the region of the looper thread extending from the looper to the stitched product are laterally deflected, and in the movement reversal position of the catch-thread device (14) are both grasped by a barbed hook (18) disposed thereon and guided to the region of the piercing hole (13).
AT09768933T 2008-06-24 2009-06-16 METHOD AND DEVICE FOR CUTTING THE NEEDLE AND THE LOOPIER THREAD ON DOUBLE LOCKSTITCH SEWING MACHINES WITH A HORIZONTAL PLANE REVOLVING LOOPPER ATE540151T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008030620A DE102008030620B3 (en) 2008-06-24 2008-06-24 Method and device for cutting the needle and the hook thread on lockstitch sewing machines with gripper rotating in a horizontal plane
PCT/EP2009/004353 WO2009156084A1 (en) 2008-06-24 2009-06-16 Method and device for separating the needle and the looper threads on double-thread lockstitch sewing machines having a looper revolving about a horizontal plane

Publications (1)

Publication Number Publication Date
ATE540151T1 true ATE540151T1 (en) 2012-01-15

Family

ID=41072646

Family Applications (1)

Application Number Title Priority Date Filing Date
AT09768933T ATE540151T1 (en) 2008-06-24 2009-06-16 METHOD AND DEVICE FOR CUTTING THE NEEDLE AND THE LOOPIER THREAD ON DOUBLE LOCKSTITCH SEWING MACHINES WITH A HORIZONTAL PLANE REVOLVING LOOPPER

Country Status (4)

Country Link
EP (1) EP2300654B1 (en)
AT (1) ATE540151T1 (en)
DE (1) DE102008030620B3 (en)
WO (1) WO2009156084A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011102928A1 (en) 2011-05-23 2012-11-29 Pfaff Industriesysteme Und Maschinen Ag Sewing machine with thread clamp
DE202016104320U1 (en) 2015-10-12 2016-09-19 Xi'an Typical Europe Gmbh sewing machine
DE102017207626A1 (en) * 2017-05-05 2018-11-08 Dürkopp Adler AG Method for producing a seam end lower thread with a predetermined desired seam protrusion
DE102022206102A1 (en) 2022-06-17 2023-12-28 Pfaff Industriesysteme Und Maschinen Gmbh sewing system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1485265C2 (en) * 1962-09-18 1975-12-11 G. M. Pfaff Ag, 6750 Kaiserslautern Thread cutting device on sewing machines
DE1941794A1 (en) * 1969-08-16 1971-03-18 Pfaff Ag G M Thread cutting device on lockstitch sewing machines
DE1941681A1 (en) * 1969-08-16 1971-06-09 Pfaff Ag G M Thread cutting device on lockstitch sewing machines
JPH0761391B2 (en) * 1988-07-15 1995-07-05 ジューキ株式会社 Post-type sewing machine thread trimming device
US4879960A (en) * 1988-07-22 1989-11-14 Kansai Special Usa Corp. Thread trimmer system for in-line chain stitch sewing machine
US5289791A (en) * 1993-03-31 1994-03-01 General Motors Corporation Sewing machine with thread wiper and auxiliary cutter
DE19722395C1 (en) * 1997-05-28 1998-08-06 Pfaff Ag G M Double lock:stitch sewing machine thread cutter
JP5042573B2 (en) * 2006-09-15 2012-10-03 Ｊｕｋｉ株式会社 sewing machine
JP2009061020A (en) * 2007-09-05 2009-03-26 Brother Ind Ltd Thread cutting apparatus for sewing machine

Also Published As

Publication number Publication date
DE102008030620B3 (en) 2009-12-24
EP2300654B1 (en) 2012-01-04
EP2300654A1 (en) 2011-03-30
WO2009156084A1 (en) 2009-12-30

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