FR2449741A1 - Machine a coudre electronique avec boucle de commande de position du type numerique - Google Patents

Machine a coudre electronique avec boucle de commande de position du type numerique

Info

Publication number
FR2449741A1
FR2449741A1 FR8003698A FR8003698A FR2449741A1 FR 2449741 A1 FR2449741 A1 FR 2449741A1 FR 8003698 A FR8003698 A FR 8003698A FR 8003698 A FR8003698 A FR 8003698A FR 2449741 A1 FR2449741 A1 FR 2449741A1
Authority
FR
France
Prior art keywords
position control
sewing machine
control loop
type position
digital type
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.)
Granted
Application number
FR8003698A
Other languages
English (en)
Other versions
FR2449741B1 (fr
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.)
Necchi SpA
Original Assignee
Necchi SpA
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 Necchi SpA filed Critical Necchi SpA
Publication of FR2449741A1 publication Critical patent/FR2449741A1/fr
Application granted granted Critical
Publication of FR2449741B1 publication Critical patent/FR2449741B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
    • G05B19/4141—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by a controller or microprocessor per axis
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/04—Sewing machines having electronic memory or microprocessor control unit characterised by memory aspects
    • D05B19/10—Arrangements for selecting combinations of stitch or pattern data from memory ; Handling data in order to control stitch format, e.g. size, direction, mirror image
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/04—Sewing machines having electronic memory or microprocessor control unit characterised by memory aspects
    • D05B19/10—Arrangements for selecting combinations of stitch or pattern data from memory ; Handling data in order to control stitch format, e.g. size, direction, mirror image
    • D05B19/105—Physical layout of switches or displays; Switches co-operating with the display
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/23—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
    • G05B19/231—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G05B19/232—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/33—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device
    • G05B19/35—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device for point-to-point control
    • G05B19/351—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G05B19/353—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/06—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing for sewing buttonholes
    • D05B3/08—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing for sewing buttonholes for buttonholes with eyelet ends
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/33—Director till display
    • G05B2219/33337—For each axis a processor, microprocessor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34215—Microprocessor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43006—Acceleration, deceleration control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Numerical Control (AREA)

Abstract

MACHINE A COUDRE ELECTRONIQUE COMPORTANT UNE COMMANDE AUTOMATIQUE PAR CLAVIER 128 DES ORGANES DE FORMATION DES POINTS DE COUTURE, EN PARTICULIER LA BARRE A AIGUILLE 120 ET LA GRIFFE D'AVANCE DU TISSU 603. UN CIRCUIT DE CONTROLE DE POSITION 126 COMPREND UN DISPOSITIF TRANSDUCTEUR DE LA POSITION DE MOYENS D'ACTIONNEMENT DES ORGANES 130, 132 DE FORMATION DU POINT ET ENGENDRE A SA SORTIE DES SIGNAUX POUVANT ETRE COMPARES, DIRECTEMENT OU INDIRECTEMENT, EN VALEUR NUMERIQUE, AVEC LES SIGNAUX DE COMMANDE AFIN DE FOURNIR DES SIGNAUX DE CONTROLE AUX MOYENS D'ACTIONNEMENT, CETTE COMPARAISON S'EFFECTUANT PAR L'INTERMEDIAIRE DE MOYENS ELABORATEURS INCORPORES AU CIRCUIT DE CONTROLE DE POSITION. APPLICATION NOTAMMENT AUX MACHINES A COUDRE A USAGE DOMESTIQUE.
FR8003698A 1979-02-21 1980-02-20 Machine a coudre electronique avec boucle de commande de position du type numerique Expired FR2449741B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT42904/79A IT1125064B (it) 1979-02-21 1979-02-21 Macchina per cucire elettronica con anello di controllo di posizione di tipo digitale

Publications (2)

Publication Number Publication Date
FR2449741A1 true FR2449741A1 (fr) 1980-09-19
FR2449741B1 FR2449741B1 (fr) 1987-10-16

Family

ID=11254538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8003698A Expired FR2449741B1 (fr) 1979-02-21 1980-02-20 Machine a coudre electronique avec boucle de commande de position du type numerique

Country Status (17)

Country Link
US (1) US4275674A (fr)
JP (1) JPS55116384A (fr)
AT (1) ATA97380A (fr)
AU (1) AU532715B2 (fr)
BE (1) BE881811A (fr)
CA (1) CA1137594A (fr)
CH (1) CH639154A5 (fr)
DE (1) DE2943664A1 (fr)
DK (1) DK155249C (fr)
FR (1) FR2449741B1 (fr)
GB (1) GB2042771B (fr)
IT (1) IT1125064B (fr)
NL (1) NL8001043A (fr)
NO (1) NO157790C (fr)
NZ (1) NZ192918A (fr)
SE (1) SE444959B (fr)
ZA (1) ZA80942B (fr)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343248A (en) * 1978-04-20 1982-08-10 Janome Sewing Machine Co. Ltd. Pattern selecting system of an electronic sewing machine
JPS5576684A (en) * 1978-12-06 1980-06-09 Janome Sewing Machine Co Ltd Pattern select device of electric sewing machine
IT1125066B (it) * 1979-05-03 1986-05-14 Necchi Spa Perfezionamento ai dispositivi generatori di segnale di sincronizzazione in macchine per cucire
SE419993B (sv) * 1979-06-20 1981-09-07 Husqvarna Ab Symaskin for somnad av monstersommar
JPS6043143B2 (ja) * 1980-05-14 1985-09-26 ブラザー工業株式会社 模様選択装置
JPS5757592A (en) * 1980-09-22 1982-04-06 Brother Ind Ltd Regulator for feed of sewing machine
US4354442A (en) * 1980-10-22 1982-10-19 The Singer Company Method for storing sewing machine stitch pattern data in a byte organized memory
DD160751A3 (de) * 1981-04-06 1984-02-29 Textima Veb K Schaltungsanordnung zum automatischen naehen
ES512361A0 (es) * 1981-05-20 1983-02-16 Truetzschler & Co Perfeccionamientos en un dispositivo para el control y la regulacion de una carda.
DE3120133C2 (de) * 1981-05-20 1985-05-09 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zur Regelung und Steuerung einer Karde oder Krempel
DE3218114C2 (de) * 1981-05-20 1995-10-05 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde zur Vergleichmäßigung von Kardenbändern
CH660890A5 (de) * 1982-09-22 1987-05-29 Dorina Naehmasch Verfahren und naehmaschine zur herstellung von naehmustern.
DE3235121C2 (de) * 1982-09-22 1984-07-05 Dorina Nähmaschinen GmbH, 7500 Karlsruhe Nähmaschine mit einer elektronischen Steuereinrichtung
US4512271A (en) * 1982-10-20 1985-04-23 Usm Corporation Pattern selection system
US4627369A (en) * 1983-06-27 1986-12-09 Conrad Industries, Inc. System for improving embroidered articles
DD218490A1 (de) * 1983-07-27 1985-02-06 Textima Veb K Mikrorechnersteuereinheit fuer die stellantriebe von strickmaschinen, insbesondere flachstrickmaschinen
JPS60126190A (ja) * 1983-12-14 1985-07-05 蛇の目ミシン工業株式会社 電子ミシンの縫条件設定装置
JPS61109591A (ja) * 1984-11-02 1986-05-28 プリンスミシン株式会社 ミシン
SE459103B (sv) * 1987-10-05 1989-06-05 Husqvarna Ab Symaskin med grafiska instruktioner
IT1217796B (it) * 1988-06-07 1990-03-30 Rockwell Rimoldi Spa Dispositivo elettronico per la gestione dell'autosetting in macchine per cucire industriali.
DE4016815A1 (de) * 1990-05-25 1991-11-28 Bosch Gmbh Robert Verfahren und vorrichtung zur einstellung eines stellglieds eines kraftfahrzeugs
DE69122743T2 (de) * 1991-03-01 1997-02-13 Comelz Spa Funktionsauswahlanzeige für Nähmaschine
DE19580133C2 (de) * 1994-01-26 2000-07-06 Nippon Denpa Kk Stickmaschinen-Steuereinheit
JP2008229066A (ja) * 2007-03-22 2008-10-02 Brother Ind Ltd ミシン及びミシン制御プログラム
DE102007021992A1 (de) 2007-05-08 2008-11-13 Frankl & Kirchner GmbH & Co KG Fabrik für Elektromotoren u. elektrische Apparate Maschinensteuerung
US10394325B2 (en) 2013-12-10 2019-08-27 Apple Inc. Input friction mechanism for rotary inputs of electronic devices
US10145712B2 (en) * 2014-09-09 2018-12-04 Apple Inc. Optical encoder including diffuser members
US9651405B1 (en) 2015-03-06 2017-05-16 Apple Inc. Dynamic adjustment of a sampling rate for an optical encoder
US10503271B2 (en) 2015-09-30 2019-12-10 Apple Inc. Proximity detection for an input mechanism of an electronic device
US10203662B1 (en) 2017-09-25 2019-02-12 Apple Inc. Optical position sensor for a crown

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021650A (en) * 1975-11-19 1977-05-03 Xerox Corporation Velocity command signal generating apparatus
US4122786A (en) * 1976-05-14 1978-10-31 Sharp Kabushiki Kaisha Programmable stitch pattern forming control in an electronic sewing machine
GB2009451A (en) * 1977-11-29 1979-06-13 Zangs Ag Maschf Apparatus for controlling frame movements in automic embroidery or sewing machines
GB1550238A (en) * 1977-03-02 1979-08-08 Singer Co Sewing machine with a programmable memory

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795851A (en) * 1972-01-03 1974-03-05 T Gage Digital servosystem
GB1433868A (en) * 1972-05-06 1976-04-28 Herbert Ltd A Automatic control systems for and methods of controlling machine tool apparatus
GB1425926A (en) * 1972-05-26 1976-02-25 Herbert Ltd A Automatic control systems and methods
US4051794A (en) * 1974-08-12 1977-10-04 Union Special Corporation Automatic sewing machine
US3958109A (en) * 1975-01-20 1976-05-18 The United States Of America As Represented By The Secretary Of The Navy Universal modularized digital controller
US4016821A (en) * 1975-07-16 1977-04-12 The Singer Company Electronic control of bight, feed and feed balance in a sewing machine
JPS5847190B2 (ja) * 1975-10-17 1983-10-20 蛇の目ミシン工業株式会社 デンシセイギヨミシン
CH620721A5 (fr) * 1976-02-06 1980-12-15 Sharp Kk
US4085691A (en) * 1976-07-27 1978-04-25 The Singer Company Sewing machine with programmable memory
JPS5327852A (en) * 1976-08-26 1978-03-15 Ito Akihiko Electronic pattern stitch sewing machine controller
US4090116A (en) * 1976-12-10 1978-05-16 General Electric Company Closed loop digital control system and method for motor control
US4100865A (en) * 1977-03-21 1978-07-18 The Singer Company Programmable sewing machine operable in a plurality of modes
SE416968B (sv) * 1977-03-29 1981-02-16 Husqvarna Ab Symaskin med elektroniska monsterdatakretsar
JPS53128445A (en) * 1977-04-15 1978-11-09 Janome Sewing Machine Co Ltd Electronic controlled sewing machine
IT1162042B (it) * 1978-02-21 1987-03-18 Necchi Spa Macchina per cucire elettronica comandata da un microcalcolatore
US4159685A (en) * 1978-07-28 1979-07-03 The Singer Company Formation of variable width cutting space buttonhole patterns in an electronically controlled sewing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021650A (en) * 1975-11-19 1977-05-03 Xerox Corporation Velocity command signal generating apparatus
US4122786A (en) * 1976-05-14 1978-10-31 Sharp Kabushiki Kaisha Programmable stitch pattern forming control in an electronic sewing machine
GB1550238A (en) * 1977-03-02 1979-08-08 Singer Co Sewing machine with a programmable memory
GB2009451A (en) * 1977-11-29 1979-06-13 Zangs Ag Maschf Apparatus for controlling frame movements in automic embroidery or sewing machines

Also Published As

Publication number Publication date
SE8001313L (sv) 1980-08-22
BE881811A (fr) 1980-06-16
US4275674A (en) 1981-06-30
IT7942904A0 (it) 1979-02-21
GB2042771A (en) 1980-09-24
NZ192918A (en) 1983-05-10
IT1125064B (it) 1986-05-14
NO800453L (no) 1980-08-22
ZA80942B (en) 1981-02-25
DK155249C (da) 1989-07-24
DE2943664A1 (de) 1980-08-28
NL8001043A (nl) 1980-08-25
DE2943664C2 (fr) 1987-02-12
NO157790B (no) 1988-02-08
ATA97380A (de) 1993-07-15
AU532715B2 (en) 1983-10-13
CH639154A5 (it) 1983-10-31
DK155249B (da) 1989-03-13
NO157790C (no) 1988-05-18
FR2449741B1 (fr) 1987-10-16
CA1137594A (fr) 1982-12-14
SE444959B (sv) 1986-05-20
AU5496380A (en) 1980-08-28
GB2042771B (en) 1983-03-09
JPS55116384A (en) 1980-09-06
DK75980A (da) 1980-08-22

Similar Documents

Publication Publication Date Title
FR2449741A1 (fr) Machine a coudre electronique avec boucle de commande de position du type numerique
GB1281391A (en) Improvements in needle operating means in knitting machines
ES422118A1 (es) Metodo y aparato para la produccion de genero de peluche.
FR2385834A1 (fr) Machine a coudre comportant des circuits electroniques de traitement de donnees de dessins de piqures
KR920004632A (ko) 요동싱카와 프렛셔바아를 가지는 횡편기
ES8201655A1 (es) Una maquina de coser perfeccionada
GB1208992A (en) Knitting machine apparatus for producing tubular fabric without a helical bias
GB1333242A (en) Tufting machines
SE8401775L (sv) Elektronisk symaskin
GB1017413A (en) Improvements in or relating to a compound needle
SE8105095L (sv) Symaskin
GB754629A (en) Zigzag sewing machine
GB930106A (en) Raschel warp knitting machine
ES472587A1 (es) Tejido de punto del tipo de dos barras de guia
FR2405321A1 (fr) Machine a coudre a production automatique de motifs de points de couture
ES404221A1 (es) Aparato para la programacion analogica electronica en ma- quinas tricotadoras.
GB1515045A (en) Changing loop density in circular knitting machines
GB772701A (en) Stitch-length indicator for a sewing machine
GB788730A (en) Improvements relating to means for actuating butted instruments of knitting machines
ES8207601A1 (es) Maquina circular para generos de punto
GB1065397A (en) Button stitching machine
GB1031029A (en) Two-thread chain stitch sewing machines with means for forming rows of stitches resisting unravelling
GB735383A (en) Girdles having parts of different length and method of and apparatus for producing such girdles
ES438957A1 (es) Dispositivo electronico de dibujo para maquina de punto.
SU962360A1 (ru) Механизм зигзага швейной машины

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse