US3913508A - Two-needle pneumatic disengaging mechanism - Google Patents

Two-needle pneumatic disengaging mechanism Download PDF

Info

Publication number
US3913508A
US3913508A US531947A US53194774A US3913508A US 3913508 A US3913508 A US 3913508A US 531947 A US531947 A US 531947A US 53194774 A US53194774 A US 53194774A US 3913508 A US3913508 A US 3913508A
Authority
US
United States
Prior art keywords
needle
valve
needle bar
valve means
bar
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 - Lifetime
Application number
US531947A
Other languages
English (en)
Inventor
Ronald J Boser
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.)
SPECIAL SEWING SYSTEMS Inc
Original Assignee
SPECIAL SEWING SYSTEMS Inc
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
Priority to US531947A priority Critical patent/US3913508A/en
Application filed by SPECIAL SEWING SYSTEMS Inc filed Critical SPECIAL SEWING SYSTEMS Inc
Priority to IT27399/75A priority patent/IT1042680B/it
Priority to ES441543A priority patent/ES441543A1/es
Publication of US3913508A publication Critical patent/US3913508A/en
Application granted granted Critical
Priority to FR7532152A priority patent/FR2294261A1/fr
Priority to GB45126/75A priority patent/GB1530162A/en
Priority to DE2552940A priority patent/DE2552940C3/de
Priority to CA241,356A priority patent/CA1022011A/fr
Priority to JP14791275A priority patent/JPS5533356B2/ja
Assigned to BT COMMERCIAL CORPORATION reassignment BT COMMERCIAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: UNION SPECIAL CORPORATION
Assigned to UNION SPECIAL CORPORATION reassignment UNION SPECIAL CORPORATION RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BT COMMERCIAL CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives
    • D05B55/16—Needle-bar drives with provision for disengaging individual needle bars

Definitions

  • 112/221; 112/219 B use in a two-needle Sewing machine of the vertical [51 1111. C1 D058 69/08 hook lockstitch yp is disclosed
  • the pneumatically Fi l (Search 122 220 221 2 9 B 3 actuated needle bar mechanism selectively controls [56] References Cited UNITED STATES PATENTS 669,972 3/1901 Anderson 112/219 B 2,868,152 l/1959 Benink et al 112/221 lIll 122/164, DIG. 3
  • FIG.6A is a diagrammatic representation of FIG.6A.
  • the present invention relates to an improved mechanism for selectively disengaging either or both needles of a two-needle industrial sewing machine.
  • 1,899,303 there is .provided a single needle supporting bar fitted with -a head having separate slide ways for each of the two needle holders.
  • the needle holders are provided with spring-loaded detents to lock the holders in either the engaged ordisengaged position.
  • Similar manually oper ated needle positioning devices are shown in Kufall U.S. Pat. No. 2,495,586, Weigert U.S. Pat. No. 3,763,805 and Shuffield U.S. Pat. No. 3,763,806. While each of the above patents provides a mechanism whereby either or both needles of a two-needle ma- No. 3,545,390. In these patents two separate needle bars are provided together with a mechanical disengaging means by which either needle bar alone may be disengaged.
  • Each needle sirable that eitheror both of the needles be capable of ,being raised to a nonoperating or disengaged position i to enable the operator toturn left or right seam comers bar actuating cylinder communicates through pneumatic ducts with remotely positioned four-way valves which are actuated by treadles or other means to either of two extreme positions. Actuation of the treadle controls the four-way valve to direct pneumatic pressure into one side of the double acting pneumatic cylinder,
  • a piston connected to the needle bar into a locked position constituting either an operating (i.e., engaged) position or a nonoperating (i.e., disengaged) position.
  • FIG. 1 is a front elevational view, partly in section, of a two-needle sewing machine incorporating thepneumatic needle disengaging mechanism according to the present invention.
  • FIG. 2 is an elevation view of the left end of the sewing machine as viewed in FIG. 1 with the head cover removed and part of the spacer cut away.
  • FIG. 3 is an enlarged vertical'section of the needle bar assembly taken along line 3-3 of FIG. 2.
  • FIGS. 4A and 4B are, respectively, rear and left side views of the detent bar of the needle bar assembly.
  • FIG. 5 is an exploded view of the parts associated with the right needle bar shown in FIG. 3.
  • FIGS. 6A and 6B are, respectively, rear and right side views of the retractable needle holder associated with the right needle bar shown in FIG. 3.
  • FIG. 7 is a fragmentary cross-sectionalview of the pneumatic system including the double acting pneumatic cylinders for the left and right needle bars, the left and right two-position four-way valves and the air supply and showing the left needle in the retracted or disengaged position while the right needle is in the unretracted or engaged position.
  • FIG. 8A- is a plan view of the left pedal assembly, partly in section, and showing the pedal in a position to retract the leftneedle.
  • FIG. 8B is a sectional view of the left pedal assembly taken along the line 8B-8B of FIG. 8A.
  • FIG. 9A is a plan view of the right pedal assembly, partly insection, and showing the pedal in a position to engage the right needle.
  • FIG. 9B is a sectional view of the right pedal assembly taken along the line 93-98 of FIG. 9A.
  • the sewing-machine main frame in which thepresent invention may be incorporated isindicated generally'at l and. comprises a work'supporting base portion 12, a vertical standard 14 and an overhanging arm 16 with a needle head 18 at its, free end.
  • a rotatable shaft 20 extending longitudinally, within the overhanging arrn l6 and suitably journaled therein extends through the right wall of the vertical standard 14 and carries on itsright end (as viewed in FIG. 1 ⁇ acombination hand wheel and pulley 22 and an electromechanical synchronization unit 24.
  • a belt (not shown.) from an electrodrive (not shown) drives the pulley 22 and the rotatable shaft 20.
  • the electromechanical synchronization unit 24 supplies electrical signals to the electrod rive to cause the machine to stop with the needle bars in the up or down position as may be desired by the operator.
  • the synchronization unit may also con'trol the trimming of the thread'at the "beginning or at the end of a garment stitching operation;
  • the synchronization "unit 24 here contemplated may; for example, be a QuickModel No. 800-ST-362 unit or an Amc'o' Model No.*800-XT-362 unit.
  • the rotatable shaft 20 extends from the pulley 22 frame-$8 pivoted at its upper end on pine 40.
  • - meanstare provided to rock the frame 38 in the direction of the feed, i.e., in the line of stitchformation, to impart a needle feed action to the work.
  • This rocking motion is derived from apin 42 attached to the frame 38 and providing va pivotal attachment for one end; of a rocker line. 44, the other end of which is-pivotally connected with arm 46 which extends downwardly and outwardly from collar 48 secured to a hollow rock shaft ,7 I I I I
  • the lower endof the right needle bar 36 is fastened to a needle bar clamp 52 by a dog screw 54.
  • air hose 60 communicates with the top of the needle bar 36 by means of .a hollowthreaded nut 62 which .isrthreaded into the needle bar-andan air collar 64.
  • Air hose 60 communicates with theair collar-64 through a radial hole 66 formed in the collar 64 and the fitting 68 soldered into the collar 64.
  • Air collar 64 is fastened to the top of the needle bar 36'by a screw 70 provided with an axial bore 72 which communicates with a radial bore 74. Screw 70 is threaded into the hollow nut 62 with its radial bore 74 aligned with the radial hole 66 of the air collar 64 to provide an air passage communicating'between the air.
  • hose 60 and the interior portion of the needlenbar 36 are fastened to the top of the needle bar 36'by a screw 70 provided with an axial bore 72 which communicates with a radial bore 74. Screw 70 is threaded into the hollow nut 62 with its radial bore 74 aligned with
  • -air hose 76 (FIG..7) is connected to the needle bar 36 by an air inlet collar 78 through an aligned radial hole formed in the collar and a radial hole 80 formed in the needle bar 36. Air hose 76 communicates with the needle bar at a point just above the dividing seal portion 82 of the needle bar. v p
  • An air piston 84 is slidably mounted within the needle bar 36 between the air intake points corresponding to air hoses 60 and 76 and is fastened to piston rod 86 by a nut 88.
  • a cup seal 90' is positioned around the piston rod 86 and within the needle bar 36 so as to form a lower pressure chamber within the needle bar 36 and bounded at the ends by piston 84 and cup seal 90.
  • the' air piston 84 forms the movable element in a double acting pneumatic cylinder and will be driven downming surfaces'94 and 96 adapted to selectively engage movablelocking balls 98, 100.
  • Locking balls 98, 100 are slidably mounted within a retractable needle holder 102 (see FIGS. 6A and 6B) which, in turn, is slidable within a vertical slot 104 formed in the needle bar 36.
  • A'detent bar 106 (see FIGS. 4A and 4B) is secured to the lower end of needle bar 36 by do'g screw 54. Similarly, detent bar 106' is secured to the lower end of needle bar -'56 by dog screw58. I
  • the retractable needle holder l02- has .a cylindrical upper section 108 that has been longitudinally sectioned off to form a flat portion ll0'and a plate-like lower section 112.
  • a vertical slot 114 extends-from the flat into the cylindrical section 108 and down into the plate-like lower section 112.
  • Two horizontal holes 116, 118 having diameters larger than the width of the vertical slot 114 are bored from the flat 110 into the cylindricalsection 108 with the slot 114bisecting the holes.
  • the upper and lower aneedle 122 while a horizontal hole 124 serves as a needle stop.
  • the needle 122 is locked into position by a set screw 126 threadedinto the horizontal locking 4 hole 128.
  • the cam member 92 (FIGS. 3 and 5) is formed with flat sides so as to slide within the vertical slot 114 of the retractable needle holder 102.
  • Lower camming surface 96 of the cam member 92 is adapted to contact locking ball 100 and urge said locking ball outwardly from the needle holder 102 along hole 118 when the piston 84 is driven downwardly within the needle bar 36.
  • the upper camming surface 94 is adapted to ball outwardly from .the needle holder 102 along hole 116 when the piston 84 is driven upwardly within the needle bar 36.
  • the detent bar106 (FIGS. 4A, 4B and 5) includes as its upper section the dividing seal portion 82.
  • the central section 130 of the detent bar is sectioned longitudinally from a cylinder to form a flat 132 which mates with the flat 110 of the retractable needle holder 102.
  • Two shallow holes 134, 136 are formed in the flat 132.
  • the shallow holes 1 34 and 136 are smaller in diameter than the locking balls98, 100 so as to allow a portion of said balls to protrude from the retractable needle holder 102 into the detent bar 106 when aligned respectively with the upper or lower horizontal holes 1 16, 118.
  • the lower section 138 of the detent bar 106 is cylindrical in shape and has formed therein a slot 140 to receive the plate-like section 112 of the retractable needle holder 102.
  • Two holes 142, 144 are formed in the cylindrical section 138 of the detent bar 106.
  • the upper hole 142 is aligned to receive the top of the dog screw 54 and thereby secure the detent bar 106 to the needle bar 36 while the lower hole 144 is provided for access to theneedle set screw 126.
  • Horizontal circular groove 146 is aligned with the needle stop hole 124 in the retractable needle holder 102 when the needle holder is in the operating or unretracted position to permitiobservation of the position of the needle 122 within the needle holder.
  • a small horizontal hole 148 is formed in the lower portion of the needle bar clamp 52 perpendicular to the plane of the needle bars 36 and 56 and midway between the axes of the needle bars to receive a roll pin 150.
  • the roll pin 150 is adapted to abut against and support the adjacent needle holder 102 or 102 so as to prevent the lateral deflection of either needle holder 102 or 102' when the other needle holder is in the re tracted position.
  • the roll pin 150 prevents a lateral deflection of the needle holder 102 in a leftward direction when needle holder 102 is in its retracted position.
  • Horizontal holes 152, 152' in the needle bar claim 52 are formed in alignment with circular groove 146 of the detent bar 106 to permit observation that the needles 122 are properly seated while horizontal holes 154, 154 are aligned with holes 144, 144 of the detent bar 106, 106' to provide access to the needle set screws 126, 126.
  • FIG. 7 illustrates in diagrammatic form the pneumatic supply and control system for the needle bar actuating mechanism of the present invention.
  • Air from an air supply source 156 enters a tee connector 158 and is divided between two air supply tubes 160, 160.
  • the air supply tube 160 communicates with the right four-way valve 162.
  • Valve 162 comprises a cylindrical body 164 and an axially disposed spool 166.
  • the valve body contains five air ports including a central air supply port 168 which'communicates with the air supply tube 160, two outlet pressure ports 170, 172 which communicate, respectively, with the air 'hoses 60 and 76 and two exhaust ports 174, 176 positionedoutwardly from the outlet pressure ports 170, 172.
  • the spool 166 of the valve 162 comprises a central rod 178 and three piston portions 180 and actuating headsl82, 183 affixed at each end of the central rod '178.
  • a spring 184 urges the spool 166 into a left operating position within the valve body 164 whereby ports 168 and 170 are in communication and ports 172 and 176 are in communication.
  • pressurized air from the air supply 156 is directed through the air supply tube 160, through the valve body 164 and air hole 60 into the upper portion of the needle bar 36 whereby the piston 84, the piston rod 86, the cam member 92 and the needle holder 102 Y are driven downwardly within the needle bar 36.
  • the camming surface 96 urges locking ball outwardly against the flat 132 of the detent bar 106.
  • the cam surface 96 will urge the ball partially into the shallow hole 136 whereby the needle holder 102 will be locked in the engaged or sewing position.
  • FIG. 7 Use of the pneumatic systemas shown diagrammatically in FIG. 7 permits both needles of a double needle sewing machine to be moved to either an operating or a nonoperating position by means of remotely located four-way valves.
  • the valves are provided with compression springs 184, 184 arranged normally to cause both needles to be in the operating'or sewing position.
  • the four-way pneumatic control valves 162 and 162' may be incorporated into pedal assemblies or treadles as'shown in FIGS. 8A, 88, 9A and 9B.
  • the pedal assemblies conveniently may be permanently affixed to the sewing machine stand (not shown).
  • the right pedal assembly comprises a box 186 having a bottom portion 188, left and right side portions 190, 192, a front portion 194 and a rear portion 196.
  • a pipe support flange 198 is secured to the bottom portion 188 by two screws 200.
  • Pipe support flange 198 is appropriately formed to engage treadle pipe 202 which forms a portion of the 186 by screws 212.
  • Air hoses 60, 76 and 160 are secured to the bottom portion 188 by a claim 214 and lock screw 216 and exit from'the pedal box 186 through a grommet 218 mounted in the rear portion side portions 190, 192.
  • the pedal 220 and shaft 222 are held in position' by retaining rings 224.
  • a screw 226 is adjustably secured to the right edge of the pedal 220 and locked into position by lock nut 228.
  • the screw 226 is located so that when the pedal is positioned as "shown by the solid lines in FIG. 9B, screw 226 will be aligned with the axis of the spool 166 of the four-way valve 162. Screw 226 is then adjusted so that it contacts the adjacent spool actuating head 182 and drives the U 196.
  • Pedal 220 pivots on a shaft 222 mounted in the to-drive said needle into its second disengaged position.
  • a screw 230 is adjustably secured to the left .edge of the pedal 220 and locked into position by a lock nut232. Screw 230 is located so that when the pedal 220 is positioned as shown by the broken lines in FIG. 9B, screw 230 will be aligned with the axis of the spool 166 of the fourway valve 162. Screw 230 is then adjusted so that it contacts the adjacent spool actuating head 183 and drives the spool 166 into its right operatmg position. In FIGS. 8A and 8B the left pedal assembly is shown with the pedal 220 depressed so that the adjustable screw 230' contacts the spool actuater 183 and drives the spool 166 of the fourway valve 162' into the right operating position.
  • the mechanism herein provided enables the operator quickly and positively to actuate either or both needles to the desired position without removing the operators hands from the work. This is particularly advantageous where parallel seaming operations are being performed on garments such as coat lapels or shirt collars or pockets where it is desirable not to have the lines of stitching cross and where either or both right-hand and left-hand corners are involved.
  • a parallel seam to cross cording, a stay, a wire or a fastener it may be necessary to retract both needles either simultaneously or sequentially and to reengage the needles either in the same or another sequence.
  • the appratusc'om prising a pair of .needle bar means'each including a needle bar and a needle for forming stitches from a respective thread, means actuated pneumatically within each of said needle bars and connected'with said needle and adapted to move said needle axially with respect to said needle bar between a first engaged position and a second disengaged position, a source of pressurized air, and a pair of valve means in communication with said source of pressurized air and said pneumatically actuated means, each-of said valve means operable between first and second positions to direct air under pressure into said pneumatically actuated means, said valve means in its said firstposition adapted to direct air'under pressure into said pneumatically actuated means so as to drive saidneedle into its first engaged position, said valve means in its second position adapted to direct air under pressure'into said pneumatically actuated means so as V '2.
  • the apparatus comprising a pairof needle bar means each including a needle bar and a needle for forming stitches from a respective thread.
  • means actuated pneumatically within each of said needle bars including movable piston means connected with said needle and adapted to move said needle axially with respect to said needle bar between a first engaged position and a second disengaged position, camming means connected to said piston means for reciprocating motion therewith in a first axial direction.
  • upper and lower locking means driveably cooperating with said camming means
  • needle holder means driveably connected to said camming means through said locking means for reciprocating motion in said first direction
  • said locking means arranged, for sliding motion relative to said needle holder means in a second direction transverse to said first direction under the influence of said camming means
  • detent means'fixed to said needle bar means including upper and lower locking recesses adaptedto engage, respectively, said upper and lower locking means, said lower recess defining a first engaged position of saidineedle and said upper recess defining a second disengaged position of said needle, a source of pressurized air, and a pair of valve means in communication with said source of pressurized air and said pneumatically actuated means.
  • each of said valve means operable between first and second positions to direct air under pressure into said pneumatically actuated means, said valve means in its said first position adapted to direct air under pressure into said pneumatically actuated means so as to drive said needle into its first engaged position wherein said lower locking means is engaged with said lower recess of said detent means, said valve means in its second position adapted todirectair under pressure into said pneuniatically actuated means. so as to drive said needle intoits second disengaged position wherein said upper locking 9 10 means is engaged with said upper recess of said detent 6.
  • the apparatus of claim 4 including: oscillatable means. pedal means drivingly engaged with each of said valve 5.
  • the apparatus of claim 4 including: means associmeans to position said valve means in either of said first ated with each of said valve means to position said or second positions. valve means in either of said first or second positions. 5

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US531947A 1974-12-12 1974-12-12 Two-needle pneumatic disengaging mechanism Expired - Lifetime US3913508A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US531947A US3913508A (en) 1974-12-12 1974-12-12 Two-needle pneumatic disengaging mechanism
IT27399/75A IT1042680B (it) 1974-12-12 1975-09-18 Meccanismo di disinnesto pneumati co di due aghi
ES441543A ES441543A1 (es) 1974-12-12 1975-10-07 Mecanismo de desembrague neumatico de dos agujas para maqui-nas de coser de dar puntadas en lineas espaciadas paralela- mente.
FR7532152A FR2294261A1 (fr) 1974-12-12 1975-10-21 Mecanisme pour mettre hors service au moins une des aiguilles d'une machine a coudre a deux aiguilles
GB45126/75A GB1530162A (en) 1974-12-12 1975-10-31 Sewing machines
DE2552940A DE2552940C3 (de) 1974-12-12 1975-11-26 Mehrnadelnähmaschine
CA241,356A CA1022011A (fr) 1974-12-12 1975-12-09 Mecanisme degarnisseur pneumatique a deux aiguilles
JP14791275A JPS5533356B2 (fr) 1974-12-12 1975-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US531947A US3913508A (en) 1974-12-12 1974-12-12 Two-needle pneumatic disengaging mechanism

Publications (1)

Publication Number Publication Date
US3913508A true US3913508A (en) 1975-10-21

Family

ID=24119737

Family Applications (1)

Application Number Title Priority Date Filing Date
US531947A Expired - Lifetime US3913508A (en) 1974-12-12 1974-12-12 Two-needle pneumatic disengaging mechanism

Country Status (8)

Country Link
US (1) US3913508A (fr)
JP (1) JPS5533356B2 (fr)
CA (1) CA1022011A (fr)
DE (1) DE2552940C3 (fr)
ES (1) ES441543A1 (fr)
FR (1) FR2294261A1 (fr)
GB (1) GB1530162A (fr)
IT (1) IT1042680B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207824A (en) * 1978-04-10 1980-06-17 Lambert Howarth & Sons Limited Machines for the manufacture of footwear
US4414909A (en) * 1981-03-17 1983-11-15 Bray Murel B Needle positioner for sewing machine
DE3502841A1 (de) * 1984-02-28 1985-09-05 Rockwell-Rimoldi S.p.A., Olcella, Mailand/Milano Naehmaschine
US4569297A (en) * 1983-07-07 1986-02-11 Pfaff Industriemaschinen Gmbh Needle bar detachable drive and stroke adjusting mechanism
US5085157A (en) * 1989-09-13 1992-02-04 Durk Opp Adler Aktiengesellschaft Sewing machine with an adjustable cutting device
US5143003A (en) * 1988-03-24 1992-09-01 Dedmon George D Tufting machine having an individual needle control system
US5474003A (en) * 1994-04-25 1995-12-12 Tippmann; Dennis J. Pneumatic sewing machine
KR100419892B1 (ko) * 2001-11-26 2004-02-26 썬스타 산업봉제기계 주식회사 재봉기의 바늘대 낙하 방지구조
CN102851883A (zh) * 2012-09-17 2013-01-02 吴江市晓昱喷气织造有限公司 缝纫机用检测装置
CN101377039B (zh) * 2007-08-29 2013-06-05 Juki株式会社 缝纫机
US20150152582A1 (en) * 2012-08-29 2015-06-04 Nsd Corporation Needle bar and sewing machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1043101B (it) * 1975-10-03 1980-02-20 Meca Sn C Dispositivo di comando di una barra porta aghi in una macchina trapunta trice
IT1139233B (it) * 1981-10-16 1986-09-24 Rockwell Rimoldi S A P Macchina per cucire atta ad eseguire due o puu linee di cucitura provvista di mezzi per interrompere almeno una di dette linee di cucitura
JP4722440B2 (ja) 2004-09-22 2011-07-13 Ｊｕｋｉ株式会社 二本針ミシンの針棒機構

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US669972A (en) * 1898-09-03 1901-03-19 Andrew Hanson Sewing-machine.
US2868152A (en) * 1954-03-29 1959-01-13 Pfaff Ag G M Double needle sewing machine
US3077846A (en) * 1959-06-25 1963-02-19 Necchi Spa Arrangement for engaging and disengaging the mechanism controlling the movement of the needle-carrying bars in sewing machines provided with two needles
US3266449A (en) * 1964-10-02 1966-08-16 Firm G M Pfaff Ag Connecting means for double needle sewing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US669972A (en) * 1898-09-03 1901-03-19 Andrew Hanson Sewing-machine.
US2868152A (en) * 1954-03-29 1959-01-13 Pfaff Ag G M Double needle sewing machine
US3077846A (en) * 1959-06-25 1963-02-19 Necchi Spa Arrangement for engaging and disengaging the mechanism controlling the movement of the needle-carrying bars in sewing machines provided with two needles
US3266449A (en) * 1964-10-02 1966-08-16 Firm G M Pfaff Ag Connecting means for double needle sewing machines

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207824A (en) * 1978-04-10 1980-06-17 Lambert Howarth & Sons Limited Machines for the manufacture of footwear
US4414909A (en) * 1981-03-17 1983-11-15 Bray Murel B Needle positioner for sewing machine
US4569297A (en) * 1983-07-07 1986-02-11 Pfaff Industriemaschinen Gmbh Needle bar detachable drive and stroke adjusting mechanism
DE3502841A1 (de) * 1984-02-28 1985-09-05 Rockwell-Rimoldi S.p.A., Olcella, Mailand/Milano Naehmaschine
US4546714A (en) * 1984-02-28 1985-10-15 Rockwell-Rimoldi S.P.A. Dual needle bar sewing machine
US5143003A (en) * 1988-03-24 1992-09-01 Dedmon George D Tufting machine having an individual needle control system
US5085157A (en) * 1989-09-13 1992-02-04 Durk Opp Adler Aktiengesellschaft Sewing machine with an adjustable cutting device
US5474003A (en) * 1994-04-25 1995-12-12 Tippmann; Dennis J. Pneumatic sewing machine
KR100419892B1 (ko) * 2001-11-26 2004-02-26 썬스타 산업봉제기계 주식회사 재봉기의 바늘대 낙하 방지구조
CN101377039B (zh) * 2007-08-29 2013-06-05 Juki株式会社 缝纫机
US20150152582A1 (en) * 2012-08-29 2015-06-04 Nsd Corporation Needle bar and sewing machine
US9238882B2 (en) * 2012-08-29 2016-01-19 Nsd Corporation Needle bar and sewing machine
CN102851883A (zh) * 2012-09-17 2013-01-02 吴江市晓昱喷气织造有限公司 缝纫机用检测装置

Also Published As

Publication number Publication date
GB1530162A (en) 1978-10-25
CA1022011A (fr) 1977-12-06
JPS5533356B2 (fr) 1980-08-30
ES441543A1 (es) 1977-04-01
IT1042680B (it) 1980-01-30
FR2294261A1 (fr) 1976-07-09
JPS5184351A (fr) 1976-07-23
DE2552940B2 (de) 1978-08-10
DE2552940C3 (de) 1979-04-12
FR2294261B1 (fr) 1981-01-23
DE2552940A1 (de) 1976-06-16

Similar Documents

Publication Publication Date Title
US3913508A (en) Two-needle pneumatic disengaging mechanism
US4597344A (en) Method of operating a sewing machine, especially a multi-needle sewing machine, and an arrangement for performing the method
US4501207A (en) Hole sewing machine
US3540392A (en) Vacuum needle threader and thread wiper mechanism
JPH0231790A (ja) 押さえ上に作用する可変押圧力の発生のための圧力媒体作動可能な装置を備えたミシン
US6722299B2 (en) CNC controlled buttonhole sewing machine
US4075954A (en) Device for making braid openings in cuts of garments
US3033139A (en) Stitch forming mechanism of lock-stitch sewing machine for zigzag sewing
US3371632A (en) Thread control attachment for sewing machines
US4343251A (en) Sewing machine
GB1491925A (en) Sewing machines
KR101403225B1 (ko) 다양한 스티치들의 타입과 레이아웃 이용하여 직물을재봉하기 위한 다기능 재봉기
KR20010107705A (ko) 사뜨기 재봉틀의 천오프닝 장치
US2300585A (en) Article attaching machine
US4648335A (en) Apparatus for setting a workpiece correctly on a sewing machine
KR880000696B1 (ko) 보조 바늘을 구비한 재봉기
GB947577A (en) Improvements in or relating to sewing machines
JP4310289B2 (ja) 環縫いミシン
JP2839772B2 (ja) 縫い目を形成するためのミシン用針板
KR950011863B1 (ko) 동시에 다른 사이밍(seming)문양을 만드는 산업용 재봉기
US5373798A (en) Cloth cutter attachment
EP1367168A1 (fr) Machine à coudre à deux aiguilles pour former une couture d'angle dans une étoffe
US4688500A (en) Device for holding a fabric in blind stich sewing
US2730058A (en) Throw-outs for automatic clamp-lifters
US3664281A (en) Material feeding guide system for industrial sewing machinery

Legal Events

Date Code Title Description
AS Assignment

Owner name: BT COMMERCIAL CORPORATION

Free format text: SECURITY INTEREST;ASSIGNOR:UNION SPECIAL CORPORATION;REEL/FRAME:004610/0215

Effective date: 19851220

Owner name: BT COMMERCIAL CORPORATION, STATELESS

Free format text: SECURITY INTEREST;ASSIGNOR:UNION SPECIAL CORPORATION;REEL/FRAME:004610/0215

Effective date: 19851220

AS Assignment

Owner name: UNION SPECIAL CORPORATION

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BT COMMERCIAL CORPORATION;REEL/FRAME:004754/0102

Effective date: 19870707