DE914458C - Sewing machine with stitch adjustment - Google Patents

Sewing machine with stitch adjustment

Info

Publication number
DE914458C
DE914458C DESCH9429A DESC009429A DE914458C DE 914458 C DE914458 C DE 914458C DE SCH9429 A DESCH9429 A DE SCH9429A DE SC009429 A DESC009429 A DE SC009429A DE 914458 C DE914458 C DE 914458C
Authority
DE
Germany
Prior art keywords
sewing machine
stitch
sewing
electromagnet
stitch adjustment
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.)
Expired
Application number
DESCH9429A
Other languages
German (de)
Inventor
Dipl-Ing K Willi Heimann
Max Schwab
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DESCH9429A priority Critical patent/DE914458C/en
Priority to US382810A priority patent/US2759444A/en
Application granted granted Critical
Publication of DE914458C publication Critical patent/DE914458C/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/14Devices for changing speed or for reversing direction of rotation
    • D05B69/18Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B27/00Work-feeding means
    • D05B27/22Work-feeding means with means for setting length of stitch
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B69/00Driving-gear; Control devices
    • D05B69/22Devices for stopping drive when sewing tools have reached a predetermined position
    • D05B69/26Devices for stopping drive when sewing tools have reached a predetermined position with automatic means to reduce speed of drive, e.g. in one or more steps

Landscapes

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

Description

Bei der Herstellung von Näharbeiten ist es vielfach notwendig, eine Umschaltung der Nähmaschine vom Vorwärts- zum Rückwärtsnähen und umgekehrt durchzuführen. Diese Umstellungen erfolgen durch Beeinflussung der an Nähmaschinen üblichen Stichverstellungseinrichtungen durch Verstellung der Stichstellschraube.When making sewing work, it is often necessary to have a To switch the sewing machine from forward to backward sewing and vice versa. These changes are made by influencing the stitch adjustment devices customary on sewing machines by adjusting the stitch adjusting screw.

Die Erfindung besteht darin, daß die Umschaltung von Vorwärtsnähen auf Rückwärtsnähen oder umgekehrt durch einen Elektromagneten erfolgt. Dieser Elektromagnet kann durch ein willkürlich zu betätigendes Bedienungsmittel, z. B. durch einen von der Näherin mit dem Knie zu bedienenden Hebel, in Wirkung gesetzt werden. Die Umschaltung der Nähmaschine vorn Vorwärtsnähen zum Rückwärtsnähen und zurück kann also durch Stromkontaktgabe schnell, bequem und betriebssicher erfolgen, ohne daß die Näherin wie bisher die üblicherweise am Näahmaschinenoberteil befindliehe Stiahverstellungseinrichtung von Hand zu bedienen hat. Die Näherin kann also auch bei diesen Umschaltungen die Hände auf dem Nähgut liegenlassen und dadurch die genaue Führung des Nähgutes sichern.The invention consists in switching from forward sewing to reverse sewing or vice versa by means of an electromagnet. This electromagnet can be operated by an arbitrary operating means, for. B. be put into effect by a lever operated by the seamstress with the knee. Switching the sewing machine from forward sewing to backward sewing and back can be done quickly, conveniently and reliably by providing power, without the seamstress having to operate the needle adjustment device that is usually located on the sewing machine head by hand. The seamstress can also leave her hands on the sewing material during these switchings and thereby ensure the precise guidance of the sewing material.

Diese Einrichtung gemäß der Erfindung wirkt sich besonders vorteilhaft bei der Verriegelung einer Nähmaschinennaht aus. Dieser Arbeitsvorgang erfolgt derart, daß eine bestimmte Anzahl Stiche, beispielsweise vier Stiche, vorwärts und dann die gleiche Anzahl Stiche wieder rückwärts genäht werden.This device according to the invention is particularly advantageous when locking a sewing machine seam. This process is carried out in such a way that that a certain number of stitches, for example four stitches, forward and then the same number of stitches are sewn backwards again.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt.The drawing shows an embodiment of the subject matter of the invention shown.

Fig. i zeigt eine Ansieht auf den Erfindungsgegenstand, Fig.2 ist eine Teildarstellung des Stichstellhebels mit einer Umfassungsstelle und einer Gelenkverbindung, die mit dem -Elektromagneten in Verbindung steht.Fig. I shows a view of the subject of the invention, Fig.2 is a partial representation of the stitch setting lever with a surrounding point and an articulated connection, which is connected to the electromagnet.

Mit i ist das Nähmaschinenoberteil bezeichnet und mit 2 das auf deren Antriebswelle sitzende Schwungrad. Durch die Stichstellschraube oder den Stichstellhebel 3 wird die Stichverstellungseinrichtung in bekannter Weise betätigt. Eine Feder q. übt in einer Richtung einen Zug auf die Stichverstellungseinrichtung aus. Ein Elektromagnet 5 verstellt über eine Seilrolle 6 und ein Seil 7, das auch eine Gliederkette sein kann, den Stichstellhebel 3, wenn er durch Schaltmittel, die in der Zeichnung nicht dargestellt sind, eingeschaltet wird. Die Einschaltung kann beispielsweise durch einen Kniehebel, einen Druckknopf, einen Bowdenzug, mit Einstellmitteln vom Nähmaschinemfußtritt aus oder aber in sonst bekannter Weise erfolgen, und zwar zweckmäßig so, daß immer beide Hände am Arbeitsstück bleiben können. Der Elektromagnet 5 kann auch direkt auf die Stichstellschraube oder den Stichstellhebel 3 wirken, wenn am Anker 8 eine Gelenkanordnung 9, io vorgesehen wird, deren Schellenteil io direkt mit dem Stichstellhebel 3 verbunden ist.The upper part of the sewing machine is denoted by i and the flywheel on the drive shaft is denoted by 2. The stitch adjustment device is actuated in a known manner by the stitch adjusting screw or the stitch adjusting lever 3. A spring q. exerts a pull on the stitch adjustment device in one direction. An electromagnet 5 adjusts the stitch setting lever 3 via a rope pulley 6 and a rope 7, which can also be a link chain, when it is switched on by switching means that are not shown in the drawing. It can be switched on, for example, by a toggle lever, a push button, a Bowden cable, with adjusting means from the sewing machine footstep, or in any other known manner, in a practical way so that both hands can always remain on the work piece. The electromagnet 5 can also act directly on the stitch adjusting screw or the stitch adjusting lever 3 if a joint arrangement 9, io is provided on the armature 8, the clamp part io of which is directly connected to the stitch adjusting lever 3.

Claims (1)

PATENTANSPRLCHE: i. Nähmaschine, dadurch gekennzeichnet, daß die Umschaltung von Vorwärts- auf Rückwärtsnähen durch einen Elektromagneten bewerkstelligt wird. z. Nähmaschine nach Anspruch i, dadurch gekennzeichnet, daß der Elektromagnet durch ein willkürlich zu betätigendes Bedienungsorgan in Wirkung gesetzt wird.PATENT CLAIM: i. Sewing machine, characterized in that the switching from forward to backward sewing is accomplished by an electromagnet. z. Sewing machine according to claim i, characterized in that the electromagnet by an arbitrarily operated control element is activated.
DESCH9429A 1952-04-30 1952-05-01 Sewing machine with stitch adjustment Expired DE914458C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DESCH9429A DE914458C (en) 1952-04-30 1952-05-01 Sewing machine with stitch adjustment
US382810A US2759444A (en) 1952-04-30 1953-09-28 Sewing machines

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE328040X 1952-04-30
DESCH9429A DE914458C (en) 1952-04-30 1952-05-01 Sewing machine with stitch adjustment
US382810A US2759444A (en) 1952-04-30 1953-09-28 Sewing machines

Publications (1)

Publication Number Publication Date
DE914458C true DE914458C (en) 1954-07-01

Family

ID=27190650

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH9429A Expired DE914458C (en) 1952-04-30 1952-05-01 Sewing machine with stitch adjustment

Country Status (2)

Country Link
US (1) US2759444A (en)
DE (1) DE914458C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093183B (en) * 1957-08-31 1960-11-17 Pfaff Ag G M Seam locking device for sewing machines
DE1120255B (en) * 1956-02-20 1961-12-21 Mefina Sa Control device for the movements of the material slide of a sewing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR344119A (en) * 1903-06-19 1904-10-25 Thomas Webster Boring and turning machine
US2882847A (en) * 1955-12-09 1959-04-21 Pfaff Ag G M Multiple control device for sewing and the like machines
US2977908A (en) * 1956-09-14 1961-04-04 Pfaff Ag G M Cloth guide control for sewing and the like machines
US2914010A (en) * 1957-01-17 1959-11-24 Clinton Ind Automatic thread cutter and needle positioner
US3967566A (en) * 1974-08-21 1976-07-06 Murray Spiegel Sewing machine attachment
IT8049659A0 (en) * 1979-09-14 1980-09-12 Amf Inc PROCEDURE AND EQUIPMENT FOR PRODUCING A MACHINE SEAM WITH CHANGE OF DIRECTION

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005656A (en) * 1931-12-19 1935-06-18 Freydberg Brothers Inc Feed reversing mechanism for sewing machines
US2031323A (en) * 1934-12-27 1936-02-18 Freydberg Bros Inc Feed reversing mechanism for sewing machines
US2708415A (en) * 1950-08-25 1955-05-17 Edythe Sherman White Needle stop apparatus for power-driven sewing machines
FR1059104A (en) * 1951-08-20 1954-03-23 Singer Mfg Co Sewing machine with advanced controller
GB744660A (en) * 1952-01-30 1956-02-08 Singer Mfg Co Needle positioning device for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120255B (en) * 1956-02-20 1961-12-21 Mefina Sa Control device for the movements of the material slide of a sewing machine
DE1093183B (en) * 1957-08-31 1960-11-17 Pfaff Ag G M Seam locking device for sewing machines

Also Published As

Publication number Publication date
US2759444A (en) 1956-08-21

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