US2863408A - Contour sewing machines - Google Patents

Contour sewing machines Download PDF

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Publication number
US2863408A
US2863408A US569638A US56963856A US2863408A US 2863408 A US2863408 A US 2863408A US 569638 A US569638 A US 569638A US 56963856 A US56963856 A US 56963856A US 2863408 A US2863408 A US 2863408A
Authority
US
United States
Prior art keywords
work
holder
contour
machine
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 - Lifetime
Application number
US569638A
Other languages
English (en)
Inventor
George J Abel
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Priority to US569638A priority Critical patent/US2863408A/en
Priority to GB3392/57A priority patent/GB806994A/en
Priority to DES52426A priority patent/DE1185909B/de
Priority to CH355344D priority patent/CH355344A/de
Application granted granted Critical
Publication of US2863408A publication Critical patent/US2863408A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B39/00—Workpiece carriers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2209/00—Use of special materials
    • D05D2209/04—Use of special materials with high friction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303416—Templet, tracer, or cutter
    • Y10T409/303696—Templet

Definitions

  • This invention relates to a machine for sewing automatically around a predetermined contour of compound curvature and more particularly to work-controlling means for such a machine which automatically simulates the normal hand guiding of material to the machine so that the Work is presented to the machine in such a way that the line of stitches is always tangent to the normal line of the machine feed at the needle.
  • the invention comprises the devices, combinations, and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferrred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.
  • Fig. l is a plan view of a machine embodying the invention.
  • Fig. 2 is an elevational view of the machine of Fig. 1.
  • Fig. 3 is an underside plan view of a IOQdEdWOIlC- holder used in the machine of Fig. 1.
  • Fig. 5 is a diagram of the electric control system for the machine of Fig. 1.
  • Fig. 6 is a plan view of the cam track and the loaded work-holder with related parts indicated to facilitate following the path of the work-holder in making the seam.
  • a sewing machine ll mounted on a table lll is driven by an electric power transmitter controlled by solenoids Sol. 1 and S01. 2.
  • the solenoid-controlled transmitter 12 is the same as that shown and described in the U. S; patent application Serial No. 536,414; filed September 26; 1955, to which reference may be had for a better understanding of its operation.
  • a circular guide plate 13 is set onthe table 11 and presents a work-supporting surface substantially flush with that of the bed 14 of the sewing machine 10. Cut into the guide plate 13 are continuous cam grooves 15, the purpose of which will be described presently.
  • a work-holder in is formed of two similar flat pieces 17 and 18 of rigid material, each cut out to form a template having an outline shape conforming to the predetermined contour but somewhat smaller to allow the edges of a workblank 19 to protrude so that they may normally be. engaged by the feeding instrumentalities ofthe sewing machine ill.
  • the work-blank 19,which comprises superposed plies of material to be stitched, is held between the two parts 17 and 18 which are hinged at 20 to provide easy loading and unloading and which may be faced on the inner surface with felt 21 or similar friction material to increase their ability to hold the workblank 19 in accurate register.
  • the lower one 18 of said parts carries spaced rollers 22 and 23, one at each end.
  • rollers engage the cam grooves 15 and form a fixed wheelbase for the work-holder 16, and it is the cooperation betweenthe rollers 22, 23 and the cam grooves 15 which establishes a predetermined desirable turning movement of the work-blank 16 as it is pulled along by the action of the sewing machine feed elements in gripping the work 19 at the edges to make the line of stitches follow the predetermined contour.
  • the roller 22 will be designated as the upper roller and the roller 23 will be designated as the lower roller.
  • the lower roller 23 is actually carried by a hub element 24 riveted to the part 18 and provided with a series of radial apertures 25 surrounding the roller 23.
  • a solenoid Sol. 3 having a vertically reciprocatable armature 26. Carried by the armature 26 is an auxiliary motor 27 with a vertically disposed shaft 28 terminating in a flange 29 carrying an eccentric pin 30 and concentric aperture 31.
  • the solenoid Sol. 3 is energized and raises the motor 27 vertically from the dottedto the full-line position so that the eccentric pin 30 engages one of the apertures 25 in the hub 24 and the roller 23 engages the concentric aperture 31 in the flange 29.
  • the motor 27 is energized and adds its driving torque to the workholder which pivots about the axis of the shaft 28.
  • a polyphase line P supplies power for the motor of the transmitter 12 and for the auxiliary motor 27 While a transformer Tr furnishes power to a control bus a, b.
  • the sewing machine is driven by transmitter 12 controlled by solenoids Sol. 1 and S01. 2.
  • the transmitter motor is started by pushing the motor start button at push-button station 37 which, by reference to the diagram of Fig. 5, energizes a magnetic starter M1 to place the motor across the line in the usual manner. Once started, this motor is kept running as long as operations continue.
  • the sewing machine 10 is started or stopped automatically by the solenoids Sol. 1 and S01. 2 which operate the transmitter clutch and brake respectively as will be described.
  • the loaded work-holder 16 is placed on the guide plate 13 with the rollers 22 and 23 engaging the cam grooves as shown in the dotted lines of Fig. 1, and with the machine feed 36 engaging the protruding edge of the material 19.
  • the cycle start button at pushbutton station 38 which energizes relay CRS to close its normally-open contacts.
  • Relay CR1 is energized and is locked in through the normally-closed contacts of a limit switch LS3.
  • the brake solenoid Sol. 2 is deenergized by the opening of the normally-closed contacts of relay CR1, the clutch solenoid Sol.
  • Closure of switch LS2 energizes a magnetic starter M2 through the normally-closed limit switch LS1 and the auxiliary motor 27 starts and runs.
  • solenoid Sol. 3 is energized to raise the auxiliary motor 27 and cause the crank pin 30 to engage one of the apertures in the work-holder while the roller 23 engages the concentric aperture 31 in the flange 29.
  • the motor 27 drives the work-holder 16 through an arc of something over 180 degrees with the upper roller 22 following the circular arc groove 15 near the outer edge of the guide plate until it engages the operator of the limit switch LS1.
  • This auxiliary feeding means is provided because the small radius of the contour in this region would give poor control of the work by the sewing machine feed alone.
  • opening of the normally-closed contacts of LS1 deenergizes the starter M2 and releases the solenoid Sol. 3 thus retracting the crank-pin and deenergizing the motor 27 to stop the auxiliary feed.
  • the sewing machine 10 continues to sew around the opposite side of the contour until the lower roller 23 engages the operator of the limit switch LS3 to open the normally-closed contacts thereof. This deenergizes the relay CR1 and the solenoid Sol. 1 thus releasing the clutch.
  • closure of the normally-closed contacts of CR1 energizes the solenoid Sol. 2 to apply the brake and stop the sewing machine 10.
  • the sewing machine may be controlled manually if desired by placing the selector switch at station 38 in the hand position which deenergizes relay CRH thus closing the normally-closed contacts of CRH, and the sewing machine will start and run as long as the machine start button is depressed.
  • Emergency stop is effected by pressing the emergency stop button, which deenergizes the entire control bus at, b and thus removes excitation from both magnetic starters M1 and M2 to deenergize both motors.
  • Fig. 6 will assist in following the path of the workholder 16 as it is propelled along the cam track.
  • U refers to the upper roller 22 and L refers to the lower roller 23.
  • the letters A, B, C, etc. applied to the workblank refer to the associated portions of the contour being sewn. S indicates the starting point.
  • the letters AU, AL, BU, BL, etc. applied to the cam grooves refer to the track followed by the upper and lower roller respectively in forming the seam in the A portion, B portion, etc. of the contour.
  • the arrows indicate the direction of progress of the rollers in the cam track and the dotted lines indicate the starting position of the work-holder.
  • a sewing machine for forming a seam automatically in a predetermined path of compound curvature comprising stitch-forming and work-feeding instrumentalities, a horizontal work support fixed adjacent the stitchforming instrumentalities, two separate cam grooves formed in the surface of said work support, a workholder having clamp means for holding the work, and a pair of rollers mounted in fixed spaced relation on said work-holder and each in engagement with a respective one of the cam grooves in the work support to guide the work-holder as it is propelled over the work support by the action of the work-feeding instrumentalities onthe work.
  • a machine for sewing automatically around a predetermined contour comprising a sewing machine having a work-supporting surface, stitch-forming and workfeeding instrumentalities, a stationary guide-plate mounted flush with the Work-supporting surface to provide an enlarged flat work-supporting area, separate cam grooves formed in said guide-plate, a portable work-holding frame having upper and lower elements between which the work is clamped and having a marginal contour in the shape of the path to be followed by the stitching instrumentalities, and spaced follower rollers mounted on the lower element for cooperative engagement with the respective cam grooves of the guide plate for controlling the direction of movement of the work-holding frame relative to the stitch-forming instrumentalities as it is propelled over the guide-plate by the work-feeding instrumentalities acting on the work clamped in the frame.
  • a machine for sewing automatically around a predetermined contour comprising a sewing machine having a work-supporting surface, stitch-forming and work-feeding instrumentalities, a stationary guide-plate forming an extension of the work-supporting surface, separate cam grooves formed in said guide-plate, a portable work-holder having similar upper and lower elements between which the work is clamped and having a marginal contour in the shape of the path to be followed by the stitching instrumentalities, and a pair of spaced follower rollers carried by the lower work-holder element for cooperative engagement with the respective cam grooves of the guide r plate which imposes on the work-holder angular movement relative to the stitch-forming instrumentalities as it is propelled over the guide-plate by the work-feeding instrumentalities acting on the work clamped in the holder.
  • a sewing machine for forming a seam automatically along a predetermined contour
  • stitch-forming elements work feeding elements
  • means for guiding the work relative to said stitch-forming elements comprising a work support, a pair of continuous cam track formed in the work support, a work-holder having an outer margin in the shape of the contour to be sewn, clamp means for holding the work in the holder with its peripheral edges presented to the stitch-forming and work-feeding elements, and a pair'of spaced guide means secured to the work-holder and engaged respectively with said cam tracks for imparting turning movements to the work-holder as it is propelled over the work support by the work-feeding elements acting on the work clamped in the holder.
  • Apparatus for presenting work automatically to the feeding and stitch-forming instrumentalities of a sewing machine to form stitches in the work along a predetermined path of compound curvature comprising a work support, a pair of continuous cam tracks formed in the work support, a work-holder slidable on the work support and having an outer margin in the shape of the path of compound curvature, clamp means for holding the work in the holder with its peripheral edges protruding from the holder to be engaged by the stitch-forming and feeding instrumentalities, and a pair of rollers secured to the work-holder in fixed spaced relation and engaged each with a respective one of said cam tracks to guide the work-holder as it is propelled over the work support by the feeding instrumentalities acting on the work clamped in the work-holder.
  • a sewing machine for forming a seam automatically in a predetermined path comprising vertically disposed stitch-forming and work-feeding instrumentalities, a horizontal work support adjacent the stitch-forming instrumeutalities, separate cam grooves formed in the surface of said work support, a work-holder having clamp means for holding the work, and a pair of spaced rollers fixed to said work-holder and each in engagement with a respective one of the cam grooves in the work support to guide the work holder as it is propelled over the work support by the action of the Work-feeding instrumentalities on the work, and auxiliary work-feeding means rendered effective responsive to the progress of the rollers along the cam grooves to drive said work-holder over predetermined portions of the seam path.
  • Apparatus according to claim 6 including means for 5 driving the sewing machine comprising a solenoid-operated electric power transmitter.
  • control means comprising relays and limit switches for operating the sewing machine and the auxiliary work-feeding means in a predetermined cycle manually initiated and automatically terminated.
  • a sewing machine for forming a seam automatically along a predetermined contour, stitch-forming elements, work-feeding elements, means for presenting the work to said work-feeding elements and for guiding the work relative tosaid stitch-forming elements
  • means for presenting the work to said work-feeding elements and for guiding the work relative tosaid stitch-forming elements comprising a Work support, a pair of continuous carn tracks formed in the work support, a work-holder having an outer margin in the shape of the contour to be sewn, clamp means for holding the work in the holder with its peripheral edges presented to the stitch-forming and work-feeding elements, and a pair of spaced guide elements secured to the work-holder and engaged each with a respective one of said earn tracks for imparting suitable turning movements to the work-holder so that the seam follows the predetermined contour as the work is progressively advanced in one direction under the control of the work: feeding elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US569638A 1956-03-05 1956-03-05 Contour sewing machines Expired - Lifetime US2863408A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US569638A US2863408A (en) 1956-03-05 1956-03-05 Contour sewing machines
GB3392/57A GB806994A (en) 1956-03-05 1957-01-31 Sewing machine
DES52426A DE1185909B (de) 1956-03-05 1957-02-20 Naehmaschine zum selbsttaetigen Naehen einer vorbestimmten Kontur
CH355344D CH355344A (de) 1956-03-05 1957-02-26 Nähmaschine zum selbsttätigen Nähen rings um eine vorbestimmte Kontur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US569638A US2863408A (en) 1956-03-05 1956-03-05 Contour sewing machines

Publications (1)

Publication Number Publication Date
US2863408A true US2863408A (en) 1958-12-09

Family

ID=24276230

Family Applications (1)

Application Number Title Priority Date Filing Date
US569638A Expired - Lifetime US2863408A (en) 1956-03-05 1956-03-05 Contour sewing machines

Country Status (4)

Country Link
US (1) US2863408A (de)
CH (1) CH355344A (de)
DE (1) DE1185909B (de)
GB (1) GB806994A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982238A (en) * 1958-08-28 1961-05-02 Jr Frank H Fromm Sewing apparatus
US3001489A (en) * 1958-02-17 1961-09-26 Western Coat Pad Company Automatic guided sewing apparatus
US3034458A (en) * 1958-09-19 1962-05-15 Clarkson Textiles Ltd Stitching of materials
DE1229825B (de) * 1962-04-04 1966-12-01 Necchi Spa Naehmaschine zum Ausfuehren von Naehten nach vorgegebenen Mustern
FR2627196A1 (fr) * 1988-02-15 1989-08-18 Tachi S Co Dispositif pour coudre un ensemble de housse de garnissage en une seule piece destine a un siege de vehicule
FR2631982A1 (fr) * 1988-05-31 1989-12-01 Tachi S Co Dispositif de couture pour coudre automatiquement un tissu possedant une forme rectiligne sur un tissu possedant une forme courbe
FR2631981A1 (fr) * 1988-05-31 1989-12-01 Tachi S Co Dispositif de couture pour coudre un tissu ondule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2691737B2 (ja) * 1988-08-09 1997-12-17 株式会社タチエス 自動縫製装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US268804A (en) * 1882-12-12 Thomas k
US1403094A (en) * 1922-01-10 Guiding attachment fob
US2609769A (en) * 1948-03-27 1952-09-09 Kaybe Mfg Company Automatic pattern control for sewing machines
US2801555A (en) * 1955-05-16 1957-08-06 Western Electric Co Work-locating apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1743874A (en) * 1926-01-12 1930-01-14 Peerless Machinery Co Device for feeding work in circular paths
BE378611A (de) * 1930-04-03
DE936549C (de) * 1949-12-20 1955-12-15 Trubenised Company Registered Vorrichtung zur automatischen Steuerung der Bewegung des Arbeitsstuecks unter der Nadel der Naehmaschine und Verfahren zur mechanischen Steuerung eines aus mehreren Schichten bestehenden Werkstuecks
BE514211A (de) * 1951-08-31
DE935947C (de) * 1952-11-20 1955-12-01 Franz Sutrich Vorrichtung fuer Naehmaschinen zum Fuehren aufeinanderliegender und miteinander zu vernaehender Stoffteile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US268804A (en) * 1882-12-12 Thomas k
US1403094A (en) * 1922-01-10 Guiding attachment fob
US2609769A (en) * 1948-03-27 1952-09-09 Kaybe Mfg Company Automatic pattern control for sewing machines
US2801555A (en) * 1955-05-16 1957-08-06 Western Electric Co Work-locating apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001489A (en) * 1958-02-17 1961-09-26 Western Coat Pad Company Automatic guided sewing apparatus
US2982238A (en) * 1958-08-28 1961-05-02 Jr Frank H Fromm Sewing apparatus
US3034458A (en) * 1958-09-19 1962-05-15 Clarkson Textiles Ltd Stitching of materials
DE1229825B (de) * 1962-04-04 1966-12-01 Necchi Spa Naehmaschine zum Ausfuehren von Naehten nach vorgegebenen Mustern
FR2627196A1 (fr) * 1988-02-15 1989-08-18 Tachi S Co Dispositif pour coudre un ensemble de housse de garnissage en une seule piece destine a un siege de vehicule
BE1003332A4 (fr) * 1988-02-15 1992-03-03 Tachi S Co Dispositif de couture pour systeme couvrant integral de garniture de siege automobile.
FR2631982A1 (fr) * 1988-05-31 1989-12-01 Tachi S Co Dispositif de couture pour coudre automatiquement un tissu possedant une forme rectiligne sur un tissu possedant une forme courbe
FR2631981A1 (fr) * 1988-05-31 1989-12-01 Tachi S Co Dispositif de couture pour coudre un tissu ondule
BE1003202A3 (fr) * 1988-05-31 1992-01-14 Tachi S Co Dispositif de couture pour coudre un tissu ondule.
BE1003201A3 (fr) * 1988-05-31 1992-01-14 Tachi S Co Dispositif de couture pour coudre automatiquement un tissu possedant une forme rectiligne sur un tissu possedant une forme courbe.

Also Published As

Publication number Publication date
CH355344A (de) 1961-06-30
DE1185909B (de) 1965-01-21
GB806994A (en) 1959-01-07

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