DE962036C - Additional device for converting a thread processing sewing machine into a seam welding machine - Google Patents

Additional device for converting a thread processing sewing machine into a seam welding machine

Info

Publication number
DE962036C
DE962036C DEV3997A DEV0003997A DE962036C DE 962036 C DE962036 C DE 962036C DE V3997 A DEV3997 A DE V3997A DE V0003997 A DEV0003997 A DE V0003997A DE 962036 C DE962036 C DE 962036C
Authority
DE
Germany
Prior art keywords
electrode
additional device
converting
seam welding
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.)
Expired
Application number
DEV3997A
Other languages
German (de)
Inventor
Dipl-Ing Hans Vieten
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.)
ELISABETH VIETEN GEB LANDSCH
HOLGER VIETEN
Original Assignee
ELISABETH VIETEN GEB LANDSCH
HOLGER VIETEN
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 ELISABETH VIETEN GEB LANDSCH, HOLGER VIETEN filed Critical ELISABETH VIETEN GEB LANDSCH
Priority to DEV3997A priority Critical patent/DE962036C/en
Application granted granted Critical
Publication of DE962036C publication Critical patent/DE962036C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B29C66/81429—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/845—C-clamp type or sewing machine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps

Landscapes

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

Description

Zusatzgerät zur Umwandlung einer fadenverarbeitenden Nähmaschine in eine Nahtschweißmaschine Zusatz zum Patent 933 239 In dem Hauptpatent wird eine Erfindung beschieben, mittels der es. auf einfachste Weise möglich ist, eine normale Nähmaschine abwechselnd als fadenverarb eitende Maschine oder als Ho chfrequenz-Nahtschweißmaschine zu benutzen. Es wird ein Zusatzgerät bteschrieben, das an Stelle des Nadelklobens an die Schubstange der Nähmaschine angebracht wird und aus einem Isolierstück, an welchem eine federnde Elektrode angebracht ist, besteht.Additional device for converting a thread processing sewing machine into a seam welding machine addendum to patent 933 239 In the main patent there is an invention described by means of it. the simplest way possible is a normal sewing machine alternately as a thread processing machine or as a high frequency seam welding machine to use. An additional device is described, which replaces the needle cage is attached to the push rod of the sewing machine and made of an insulating piece which has a resilient electrode attached.

Wenn auch die im Hauptpatent beschriebene Anordnung zur vollen Zufriedenarbeit arbeitet, so haben sich doch einige Verbesserungen ergeben, welche Gegenstand der nachfolgend beschriebenen Erfindung sind. Even if the arrangement described in the main patent for full satisfaction work works, there have been some improvements which are the subject of the invention described below are.

Wird die Federung der Elektrode mit Hilfe einer metallischen Spiralfeder durchgeführt, so muß die Größe der auftretenden elektrischen Induktivität berechnet und gemessen werden, die bei den zur Verwendung kommenden- kurzen Wellenlängen des Hochfrequenzgenefatolrs- eine Rolle spielen kann. Is the suspension of the electrode with the help of a metallic spiral spring carried out, the magnitude of the electrical inductance that occurs must be calculated and measured at the short wavelengths of the Radiofrequency Genefatolrs- can play a role.

Die Spiralfeder dehnt sich während jedes Schwelißvorganges aus und drückt sich wieder zusammen.The spiral spring expands during each Schwelißvorganges and squeezes again.

Dieses bedeutet, elektrisch gesehen, eine ebensoot sich wiederholende Änderung der Induktivität.From an electrical point of view, this means an equally repetitive one Change in inductance.

Diese Änderung wurde zunächst als notwendig oder vorteilhaft erachtet, um den Arbeitsschwingungskreis, in dem die Feder sich befindet, so zu beeinflussen, daß er beispielsweise beim Zusammendrücken außer Resonanz gerät und eine geringere Enefgieaufnahme aus dem Generator ermöglicht, um ein Durchbrennen des Kunststoffes gegen Ende der Schweißung zu vermeiden.This change was initially considered necessary or beneficial, in order to influence the working oscillation circuit in which the spring is located, that it goes out of resonance, for example when squeezed, and a lesser one Energy absorption from the generator allows to burn through the plastic towards the end of the Avoid welding.

Im Laufe der später durchgeführten Versuche hat sich jedoch herausgestellt, daß diese Induktivitätsänderung der Feder wohl vorhanden sein kann, aber nicht notwendig ist, um den geschilderten Effekt zu erzeugen. Er kann außerdem durch andere Mittel, die in der Konstruktion des ang schalteten Hochfrequenzgenerators liegen können, erreicht oder n;ach Wunsch wieder erzeugt werden, worauf später eingegangen wird. In the course of the later tests it turned out, however, that this change in inductance of the spring may well be present, but not necessary is to produce the effect described. He can also, by other means, which may lie in the construction of the connected high-frequency generator, achieved or n; ach wish to be generated again, which will be discussed later.

Aus diesem Grunde konnte die Konstruktion der Elektrodenhalterung nebst Feder geändert werden, indem sie eine Geradführung erhielt. Hierdurch werden zwei Vorteile erzielt: I. Die Windungen der Feder werden kurzgeschlossen, so daß sie keine oder doch nur geringfügige Ströme führt und daher von einer zusätzlichen elektrischen Belastung weitgegend entlastet ist. For this reason, the construction of the electrode holder can be changed along with the spring by receiving a straight line guide. This will be two advantages achieved: I. The turns of the spring are short-circuited so that it carries no or only slight currents and therefore an additional one electrical load is largely relieved.

2. Die Elelçtrode, welche an der Feder befestigt ist, kann nicht mehr seitlich ausweichen, sondern gleitet senkrecht auf und ab; so daß Kurzschlüsse von der Elektrode zum Drückerfuß weitgehendvermieden- werden. 2. The electrode attached to the spring cannot move more sideways, but slide vertically up and down; so that short circuits from the electrode to the presser foot are largely avoided.

Die Erfindung sowie ihre Einzelheiten werden nachstehend an Hand der in der Zeichnung dargestellten Bilder beschrieben. Es zeigt Fig. I die komplette Elektrodenhalterung mit Elektrode, Fig. 2 die Elektrode mit Spiralfeder und Geradführungsverlängerung. The invention and its details are given below the pictures shown in the drawing. It shows Fig. I the complete Electrode holder with electrode, Fig. 2 the electrode with spiral spring and straight guide extension.

Es bedeutet I eine Muffe, die an Stelle des Nadelkiobens auf die Nadelstange der Nähmaschine geschoben wird. Die Muffe wird durch Anziehen der Schraube 2 auf der Nadelstange festgehalten. It means I a sleeve that instead of the pin on the The needle bar of the sewing machine is pushed. The sleeve is made by tightening the screw 2 held on the needle bar.

Auf der der Nadelstange gegenüberliegenden Seite der Muffe 2 ist das Isolierstück, beispielsweise ein keramisches Rohr 3, eingesetzt, das am anderen Ende wieder eine Muffe 4 trägt, in der sich ein Gewindeloch befindet. In dieses Gewinde wird ein Stift g eingeschraubt, der an seinem Außenende ein Führungsstück 6 besitzt. Zwischen Muffe 4 und Führungsstück 6 wird eine mit Bohrung versehene Anschlußlasche 5 für den- einen Pol der Hochfrequenz festgehalten. In das Führungsstück6 ist ein Loch I I gebohrt, in dem die Elektroderiverlän gerung 8 gleitet. Die Feder 7 ist mit der Elektrode I3 an dem Bund 12 der Elektrode fest verbunden, beispielsweise verlötet, und hält sich selbstfedernd mittels der etwas verengten letzten Windung 14 in einer dazu angebrachten Rille 10. Alle Teile des Gerätes sind bis auf das Isolierstück 3 vorzugsweise aus Metall hergestellt, können aber auch ganz oder teilweise aus Isoliermaterial bestehen.This is on the side of sleeve 2 opposite the needle bar Insulating piece, for example a ceramic tube 3, used on the other End again carries a sleeve 4 in which there is a threaded hole. In this A pin g is screwed into the thread, which has a guide piece at its outer end 6 owns. Between the sleeve 4 and the guide piece 6 is provided with a hole Terminal lug 5 held for one pole of the high frequency. In the guide piece 6 is a hole I I drilled in which the Elektroderiverlän movement 8 slides. The feather 7 is firmly connected to the electrode I3 on the collar 12 of the electrode, for example soldered, and is self-resilient thanks to the slightly narrowed last turn 14 in a groove 10 made for this purpose. All parts of the device are except for the Insulating piece 3 preferably made of metal, but can also be wholly or partially consist of insulating material.

Die Wirkungsweise der beschriebenen Erfindung ist folgende: Das Gerät nach Fig. I wird an der Nadelstange der Nähmaschine mittels Muffe I und Schraube 2 befestigt. Die Feder 7 ist bei hochgehobener Nadelstange entspannt, so daß sich die Elektrodenverlängerung 8 nur noch einige Millimeter in der Bohrung ii des Führungsstückes 6 befindet. Geht im Verlauf des Schweißvorganges die Nadelstange abwärts, so setzt sich die Elektrode I3 auf den Kunststoff auf, und die Feder 7 beginnt sich zusammenzudrijeken, bis der tiefste Punkt des Hubes der Nadelstange erreicht ist. Gleichzeitig gleite!t die Elel(trodenverlängerung 8 weiter in die Bohrung Im hinein. Im tiefsten Stand der Nadelstange wird die Schweißung beendet, und die Elektrode beginnt sich wieder zu heben. Die Feder 7 dehnt sich aus, während die Elektrodenverlängerund 8 in der Bohrung 11 zurückgleitet, bis der höchste Stand der Nadelstange erreicht ist. Dieses Spiel wiederholt sich bei jedem Schweißpunkt. The mode of operation of the invention described is as follows: The device according to Fig. I is attached to the needle bar of the sewing machine by means of sleeve I and screw 2 attached. The spring 7 is relaxed when the needle bar is raised, so that the electrode extension 8 only a few millimeters in the bore ii of the guide piece 6 is located. If the needle bar goes down during the welding process, it sets the electrode I3 rests on the plastic, and the spring 7 begins to compress, until the lowest point of the stroke of the needle bar is reached. At the same time slide! T Insert the electrode extension 8 further into the hole Im. In the lowest position the needle bar stops welding and the electrode starts again to lift. The spring 7 expands, while the electrode extenders 8 and 8 in the Bore 11 slides back until the needle bar has reached its highest level. This The game repeats itself at every welding point.

Man erkennt, daß das Ziel der Erfindung, eine gute Geradführung der Elektrode zu erzielen, bei gleichzeitigem elektrischem Kurzschluß der Spiralfeder erreicht ist. It can be seen that the aim of the invention, a good straight line of the To achieve electrode, with simultaneous electrical short circuit of the spiral spring is reached.

Überdies kann man, wenn ein elektrischer Kurzschluß der Feder nicht gewünscht, also eine Induktivitätsänderung benötigt wird, das Führungsstück 6 oder die Elektrodenverlängerung 8 ganz oder teilweise nicht aus Metall, sondern aus Isoliermaterial herstellen. Man muß nur dafür Sorge tragen, daß die Elektrode I3 mit der an der Lasche 5 angelegten Hochfrequenz - beispielsweise durch eine metallische Verbindung oder durch einen elektrischen Kondensator zwischen. der Lasche 5 und der letzten Windung der Feder Iq -angeschlossen ist. Moreover, if there is an electrical short circuit in the spring, it cannot desired, so a change in inductance is required, the guide piece 6 or the electrode extension 8 entirely or partially not made of metal, but of insulating material produce. You just have to make sure that the electrode I3 with the one on the Tab 5 applied high frequency - for example by a metallic connection or by an electrical capacitor between. the tab 5 and the last Coil of the spring Iq is connected.

Claims (2)

PATENTANSPRÜCHE: I. Zusatzgerät zur Umwandlung einer normalen fadenverarb eitenden Nähmaschine in eine Nahtschweißmaschine nach Patent 933 239, dadurch gekennzeichnet, daß die obere Elektrode (I3) mit einer Verlängerung (8) versehen ist, welche in einer Bohrung (1 i) eines Führungsstückes (6) gleitet; und unter dem Einfluß einer metallischen Feder (7) steht, die sich einerends an einem Bund (I2) der Elektrode abstützt und anderen Endes an dem Führungsstück (6) befertigt ist. PATENT CLAIMS: I. Additional device for converting a normal thread processing pending sewing machine into a seam welding machine according to patent 933 239, characterized in that that the upper electrode (I3) is provided with an extension (8) which in a bore (1 i) of a guide piece (6) slides; and under the influence of one metallic spring (7) which is located at one end on a collar (I2) of the electrode and the other end is made on the guide piece (6). 2. Zusatzgerät nach Anspruch I, dadurch gekennzeichnet, daß das Führungsstück (6) oder die Elektrodenverlängerung (8) ganz oder teilweise aus Nichtleitern hergestellt ist. 2. Additional device according to claim I, characterized in that the guide piece (6) or the electrode extension (8) made entirely or partially of non-conductors is.
DEV3997A 1951-11-17 1951-11-17 Additional device for converting a thread processing sewing machine into a seam welding machine Expired DE962036C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV3997A DE962036C (en) 1951-11-17 1951-11-17 Additional device for converting a thread processing sewing machine into a seam welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV3997A DE962036C (en) 1951-11-17 1951-11-17 Additional device for converting a thread processing sewing machine into a seam welding machine

Publications (1)

Publication Number Publication Date
DE962036C true DE962036C (en) 1957-04-18

Family

ID=7570729

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV3997A Expired DE962036C (en) 1951-11-17 1951-11-17 Additional device for converting a thread processing sewing machine into a seam welding machine

Country Status (1)

Country Link
DE (1) DE962036C (en)

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