DE2015757A1 - Yarn trapper for sewing machine yarn cutter - Google Patents

Yarn trapper for sewing machine yarn cutter

Info

Publication number
DE2015757A1
DE2015757A1 DE19702015757 DE2015757A DE2015757A1 DE 2015757 A1 DE2015757 A1 DE 2015757A1 DE 19702015757 DE19702015757 DE 19702015757 DE 2015757 A DE2015757 A DE 2015757A DE 2015757 A1 DE2015757 A1 DE 2015757A1
Authority
DE
Germany
Prior art keywords
trapper
yarn
thread
cutter
sewing machine
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.)
Pending
Application number
DE19702015757
Other languages
German (de)
Inventor
Werner 6143 Lorsch Keilmann
Original Assignee
Fa. Werner, Keilmann, 6143 Lorsch
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 Fa. Werner, Keilmann, 6143 Lorsch filed Critical Fa. Werner, Keilmann, 6143 Lorsch
Priority to DE19702015757 priority Critical patent/DE2015757A1/en
Publication of DE2015757A1 publication Critical patent/DE2015757A1/en
Pending legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B65/00Devices for severing the needle or lower thread

Landscapes

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

Abstract

Yarn trapper, for the yarn cutter of a sewing machine, operates without adjustment over the whole range of thread thicknesses to be used, and gives the correct thread end length for the next cycle. The machine has a horizontal gripper shaft and a double lock stitch revolving gripper. The lock-shaped trapper cutter blade has a swallowtail recess, at its end, to determine the initial thread by the spacing of the recess from the blade. Pref. the trapper is slightly twisted in its slightly curved direction of motion, and when moving backwards (contrary to the gripper's direction of rotation) positively shears the upper and lower threads between the trapper and the cutter-knife.

Description

" Fadenfänger für Fadenabschneideinrichtungen an Nähmaschinen Bei derartigen Fänger ist eine Form erforderlich, die einerseits sicher in die ausgebreitet Oberfadenschlinge unterhalb der Stichplatte eintritt, anderseits den erforderlichen Anfangsfaden für den folgenden Nähzyklus sicher bestimmt, Es ist bekannt, daß es Fadenfänger gibt die diesen Anforderungen entsprechen, jedoch zusätzlich Oberspannungslüftung und eine sehr genaue Justierung zum Gegenmesser benötigen ( s. Patent Nr.: P 27695VIIa/52a. ) Der Erfindung liegt die Aufgabe zugrunde, eine Fadenfängerform zu schaffen, die sowohl die dünnsten wie auch die dicksten und soeben noch mit der Nähmaschine zu verarbeitenten Fäden sicher und ohne aufwendige Justierung von Fänger und Gegenmesser sicher schneidet und gleichzeitg ohnen Oberfadenspannungsaußldsung s eher die erforderliche Anfangsfadenlänge bestimmt."Thread catcher for thread trimmers on sewing machines Such a catcher is required in a form that is, on the one hand, safely spread out into the Upper thread loop enters below the throat plate, on the other hand the required Starting thread for the following sewing cycle is safely determined, It is known that there is There are thread catchers that meet these requirements, but with additional high-tension ventilation and need a very precise adjustment to the counter knife (see patent no .: P 27695VIIa / 52a. ) The invention is based on the object to provide a thread catcher shape that both the thinnest and the thickest and just finished with the sewing machine processed threads safely and without time-consuming adjustment of catcher and counter knife reliably cuts and at the same time rather the required without upper thread tension indication s Determined initial thread length.

De- fadenfänger wird mit einem am 13.11.1969 mit dex-Nr.: P i56998,3 zum Patent angemeldetem Nesserträger montiert.The thread catcher was issued on November 13, 1969 with a DEX number: P i56998.3 Nesserträger (patent pending) mounted.

Die Aufgabe wird erfindungsmäßig dadurch ausgelöst, daß die Form des Fängers durch ein Hakenmesser mit Schwalbenschwanzende gebildet wird.The task is triggered according to the invention in that the shape of the Catcher is formed by a hook knife with a dovetail end.

Die mit der Erfindung erzielten Vorteile bestehen besonders darin, daß das schwalbenschwanzartige Ende des Fangers den Ober- und Unterfaden sicher mit der erforderlichen Länge vor das Schneideblatt des Fängers und des Gegenmessers gebracht wird und der Schneide-vorgang scherenartig erfolgt.The advantages achieved with the invention are in particular that the dovetail-like end of the catcher securely holds the upper and lower threads with the required length in front of the cutting blade of the catcher and the counter knife is brought and the cutting process takes place like scissors.

Durch Vergrößerung oder Verkleinerung des Abstandes von Fängerschneidblatt zu Schwalbenscbwanzmitte wird der erforderliche Anfangsfaden auf einfachste Art bestimmt.By increasing or decreasing the distance from the catcher cutting blade At the middle of the swallow's tail, the required starting thread is made in the simplest possible way certainly.

Bin Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben: Fig. 1 Schneidkante des Fängers Fig. 2 Schalbenschwanz zur Zentrierung von Ober- und Unterfaden vor dem Messer Fig. 3 Abstand dient zur Bestimmung von Ober- und Unterfaden-Anfangslange Fig. 4 Gegenmesser ( gestrichelte Linie ) Fig. 5 Fänger ist in seiner leicht bogenförmigen Bewegungerichtung um etwa lox3o Grad verschränkt.An exemplary embodiment of the invention is shown in the drawing and is described in more detail below: FIG. 1 cutting edge of the catcher FIG. 2 Pancake tail for centering the upper and lower thread in front of the knife Fig. 3 distance is used to determine the initial length of the upper and lower thread Fig. 4 Counter knife ( dashed line) Fig. 5 catcher is in its slightly arcuate direction of movement twisted about lox30 degrees.

Patentansrüche: 1. Fadenfängerform für Fadenabschneideinrichtungen an Nähmaschinen, mit waagrechtliegender Greiferwelle und Doppelsteppstich Umlaufgreifer.Claims: 1. Form of thread catcher for thread cutting devices on sewing machines, with horizontal hook shaft and lockstitch rotary hook.

Dadurch gekennzeichnet, daß das hakenförmige Bängerschneidblatt an seinem Ende eine sch'albenschwanzartige Vertiefung aufweist, die in seinem Abstand zum Fängerschneidblatt den Anfangsfaden bestimmt. Characterized in that the hook-shaped banger cutting blade on its end has a swallowtail-like depression, which at its distance determines the starting thread for the catcher cutting blade.

2. Fängerform nach Anspruch 1, dadurch gekennzeichnet, daß er in seiner leicht bogenförmigen Bewegungsrichtung etwas verschränkt ist, ( Fig. 5 ) und in seiner rückhäufigen Bewegung ( entgegen der Drehrichtung des Greifers) scherenartig zwischen Sänger und Gegenmesserschneide, Ober- und Unterfaden sicher schneidet.2. catcher form according to claim 1, characterized in that it is in his slightly curved direction of movement is somewhat twisted, (Fig. 5) and in its reverse movement (against the direction of rotation of the gripper) like scissors cuts safely between the singer and the counter knife edge, the upper and lower thread.

Claims (1)

Anlage: 1 ZeichnungAppendix: 1 drawing
DE19702015757 1970-04-02 1970-04-02 Yarn trapper for sewing machine yarn cutter Pending DE2015757A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702015757 DE2015757A1 (en) 1970-04-02 1970-04-02 Yarn trapper for sewing machine yarn cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702015757 DE2015757A1 (en) 1970-04-02 1970-04-02 Yarn trapper for sewing machine yarn cutter

Publications (1)

Publication Number Publication Date
DE2015757A1 true DE2015757A1 (en) 1971-10-21

Family

ID=5766930

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702015757 Pending DE2015757A1 (en) 1970-04-02 1970-04-02 Yarn trapper for sewing machine yarn cutter

Country Status (1)

Country Link
DE (1) DE2015757A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630559A (en) * 1984-11-08 1986-12-23 Tokyo Juki Industrial Co., Ltd. Thread cutting mechanism in lock stitch sewing machine
DE19925013C2 (en) * 1998-05-28 2001-12-13 Tokai Ind Sewing Machine Thread cutting device in a sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630559A (en) * 1984-11-08 1986-12-23 Tokyo Juki Industrial Co., Ltd. Thread cutting mechanism in lock stitch sewing machine
DE19925013C2 (en) * 1998-05-28 2001-12-13 Tokai Ind Sewing Machine Thread cutting device in a sewing machine

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