US3215106A - Device for cutting and holding the threads of a sewing machine - Google Patents

Device for cutting and holding the threads of a sewing machine Download PDF

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Publication number
US3215106A
US3215106A US252893A US25289363A US3215106A US 3215106 A US3215106 A US 3215106A US 252893 A US252893 A US 252893A US 25289363 A US25289363 A US 25289363A US 3215106 A US3215106 A US 3215106A
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US
United States
Prior art keywords
sole
fabric
needle
threads
cutting
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
US252893A
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English (en)
Inventor
Bono Luigi
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
Application granted granted Critical
Publication of US3215106A publication Critical patent/US3215106A/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
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates

Definitions

  • This invention relates in general to new and useful improvements in accessories for sewing machines, and more particularly to a novel device for cutting and holding the threads of a sewing machine when there is no more fabric under the pressure foot of the sewing machine so that the machine can be ready to start a new sewing when additional fabric is fed thereinto.
  • a primary object of this invention is to provide a novel assembly which will automatically grip and cut the threads of a sewing machine after fabric has passed from beneath the presser foot of the sewing machine so that the threads are held in place in a manner wherein when other fabric is fed into the sewing machine, sewing may continue without any manipulation of the thread by the operator.
  • Another object of this invention is to provide a novel presser foot and fabric feed assembly wherein the two cooperate normally in the feeding of fabric, and when no fabric is available to automatically cut the threads of the sewing machine and hold the threads in place for the starting of a new sewing.
  • the device of this invention generally comprises a presser foot and a fabric feeder having toothed feeder members which are movable in slots of a needle plate; the foot having a front sole and a back sole, the front sole being pivotally mounted on a support of the foot and the back sole being pivotally mounted on the front sole and adapted to press against the needle plate behind the customary needle hole therein; and to the fabric feeder is fastened an elastic plate protruding upwardly with respect to the feed members of the fabric feed and movable in front of one of the feed members into an extension of the slot in the needle plate for the feed member, which slot is in longitudinal alignment with the needle hole.
  • FIGURE 2 is a vertical sectional view taken along the line 11-11 of FIGURE 1 showing the needle plate mounted within the base of a sewing machine and having associated therewith the presser foot and needle.
  • FIGURE 3 is an enlarged fragmentary vertical sectional view taken through the rear sole and portions of the needle plate and specifically shows the rear sole clamping cut threads against the needle plate, the fabric feeder being in a retracted position.
  • FIGURES 4, 5 and 6 are fragmentary elevational views showing the mechanism at the beginning, during and towards the end of a sewing operation, respectively.
  • the device of this'invention includes a needle plate 1 which is secured to a base 2 of a sewing machine in a conventional manner.
  • the needle plate 1 is provided with a plurality of slots 3, 4, 5 and 6 in which toothed feed members 7, 8, 9 and 10, respectively, of the fabric feeder are mounted for reciprocatory movement.
  • the fabric feeder is generally referred to by the numeral 11 and is illustrated in the drawings as feeding fabric 12.
  • the fabric feeder 11 is actuated in a conventional manner (not shown) associated with the needle plate 1.
  • a plate 26 is secured to the rear of the sole 22 by means of a screw 27 for striking against the support 19 to limit the pivoting of the soles 21 and 22 relative to the support 19.
  • both soles 21 and 22 of the presser foot 20 press against the fabric 12 in order that all of the feed members 7, 8, 9 and 10 of the fabric feeder 11 cooperate in the movement of the fabric.
  • the sole 22 continues to press against the fabric 12 and with the cooperation of the feed members 7, 8 and 10, continues to move the fabric 12.
  • indented end 28 of the elastic plate 29 is indented allows the plate 29 to stretch the two threads 16 and 17 during the movement of the fabric feeder 11 in the direction of the arrow x in FIGURE 2. In this manner, the threads 16 and 17 are retained in the correct direction.
  • a sewing machine of the type including a needle, a needle plate with slots, fabric feed members projectable through slots in said needle plate, and a presser foot, mechanism for automatically cutting and holding sewing threads, said mechanism comprising a sole on said presser foot, teeth on one of said feed members cooperable with said sole for feeding fabric and cutting threads when no fabric is present between said one feed member and said sole to press the trailing thread against said sole during carried by said one feed member and cooperable with said sole G to press the trailing thread against said sole during the cutting thereof, said thread cutting and holding means comprising a support fastened to said one feed element and elastically pressed upwards through a slot in said needle plate and positioned between said teeth of said one feed member and the path of travel of said needle.
  • said needle plate has a needle receiving hole, said one feed member and said combined thread feeding and holding means being aligned with said needle hole in the direction of fabric feed, and said needle plate having an upper thread guiding recess surrounding said needle hole and directed towards said one feed member and said combined thread feeding and holding means.
  • a sewing machine of the type including a needle, a needle plate with slots, fabric feed members projectable through slots in said needle plate, and a presser foot, mechanism for automatically cutting and holding sewing threads, said mechanism comprising a sole on said presser foot, teeth on one of said feed members cooperable with said sole for feeding fabric and cutting threads when no fabric is present between said one feed member and said sole, and combined thread feeding and holding means carried by said one feed member and cooperable with said sole, a second sole carried by said presser foot for cooperation with others of said feed members to feed fabric beneath the needle while previously cut threads are being held against said first mentioned sole to press the trailing thread against said sole during the cutting thereof, said thread cutting and holding means comprising a support fastened to said one feed element and elastically pressed upwards through a slot in said needle plate and positioned between said teeth of said one feed member and the path of travel of said needle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
US252893A 1962-04-11 1963-01-21 Device for cutting and holding the threads of a sewing machine Expired - Lifetime US3215106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT795062 1962-04-11

Publications (1)

Publication Number Publication Date
US3215106A true US3215106A (en) 1965-11-02

Family

ID=11125574

Family Applications (1)

Application Number Title Priority Date Filing Date
US252893A Expired - Lifetime US3215106A (en) 1962-04-11 1963-01-21 Device for cutting and holding the threads of a sewing machine

Country Status (5)

Country Link
US (1) US3215106A (sv)
BE (1) BE628541A (sv)
CH (1) CH389375A (sv)
DE (1) DE1485248A1 (sv)
GB (1) GB1019194A (sv)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303805A (en) * 1964-12-07 1967-02-14 Singer Co Thread cutters for sewing machines
US3358630A (en) * 1965-09-10 1967-12-19 Charles F Maddi Means for severing a thread chain
US3404646A (en) * 1965-08-24 1968-10-08 Frederic P Worthen Method and apparatus for feeding textile materials in a sewing machine
US3602171A (en) * 1968-10-14 1971-08-31 J A Peterson & Co Ab Thread cutting device for sewing machines
EP0515717A1 (de) * 1991-05-29 1992-12-02 Schips Ag Nähautomation Vorrichtung zum Herstellen einer Überdecknaht in oder an Nähmaschinen mit mehreren Nadeln
US5203270A (en) * 1990-12-20 1993-04-20 Atlanta Attachment Company Sewing machine with latch back device
US5613454A (en) * 1994-12-29 1997-03-25 Union Special Corporation Vacuum latchtack throat plate with a vacuum generating apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US260478A (en) * 1882-07-04 Machine
GB363493A (en) * 1930-12-03 1931-12-24 Louis Urianek Improvements in feeding devices for sewing machines
US2293236A (en) * 1939-12-09 1942-08-18 Singer Mfg Co Thread severing device for sewing machines
US2318843A (en) * 1941-01-08 1943-05-11 Singer Mfg Co Thread-severing device for sewing machines
US2470931A (en) * 1946-05-10 1949-05-24 Rice Stix Dry Goods Company Sewing machine
US2882846A (en) * 1956-05-28 1959-04-21 Angelica Uniform Company Feed dog for sewing machines
US3068819A (en) * 1958-10-21 1962-12-18 Rothenborg Specialmaskiner For Chain cutting apparatus
US3094087A (en) * 1960-11-23 1963-06-18 Singer Mfg Co Feed dog and throat plate for compound feed sewing machines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US260478A (en) * 1882-07-04 Machine
GB363493A (en) * 1930-12-03 1931-12-24 Louis Urianek Improvements in feeding devices for sewing machines
US2293236A (en) * 1939-12-09 1942-08-18 Singer Mfg Co Thread severing device for sewing machines
US2318843A (en) * 1941-01-08 1943-05-11 Singer Mfg Co Thread-severing device for sewing machines
US2470931A (en) * 1946-05-10 1949-05-24 Rice Stix Dry Goods Company Sewing machine
US2882846A (en) * 1956-05-28 1959-04-21 Angelica Uniform Company Feed dog for sewing machines
US3068819A (en) * 1958-10-21 1962-12-18 Rothenborg Specialmaskiner For Chain cutting apparatus
US3094087A (en) * 1960-11-23 1963-06-18 Singer Mfg Co Feed dog and throat plate for compound feed sewing machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303805A (en) * 1964-12-07 1967-02-14 Singer Co Thread cutters for sewing machines
US3404646A (en) * 1965-08-24 1968-10-08 Frederic P Worthen Method and apparatus for feeding textile materials in a sewing machine
US3358630A (en) * 1965-09-10 1967-12-19 Charles F Maddi Means for severing a thread chain
US3602171A (en) * 1968-10-14 1971-08-31 J A Peterson & Co Ab Thread cutting device for sewing machines
US5203270A (en) * 1990-12-20 1993-04-20 Atlanta Attachment Company Sewing machine with latch back device
EP0515717A1 (de) * 1991-05-29 1992-12-02 Schips Ag Nähautomation Vorrichtung zum Herstellen einer Überdecknaht in oder an Nähmaschinen mit mehreren Nadeln
US5613454A (en) * 1994-12-29 1997-03-25 Union Special Corporation Vacuum latchtack throat plate with a vacuum generating apparatus

Also Published As

Publication number Publication date
BE628541A (sv)
DE1485248A1 (de) 1969-05-08
CH389375A (it) 1965-03-15
GB1019194A (en) 1966-02-02

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