US1405855A - Stitch-forming mechanism for sewing machines - Google Patents

Stitch-forming mechanism for sewing machines Download PDF

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Publication number
US1405855A
US1405855A US181208A US18120817A US1405855A US 1405855 A US1405855 A US 1405855A US 181208 A US181208 A US 181208A US 18120817 A US18120817 A US 18120817A US 1405855 A US1405855 A US 1405855A
Authority
US
United States
Prior art keywords
thread
hook
cross
needles
finger
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
US181208A
Other languages
English (en)
Inventor
James R Moffatt
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.)
Union Special Machine Co
Original Assignee
Union Special Machine 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 Union Special Machine Co filed Critical Union Special Machine Co
Priority to US181208A priority Critical patent/US1405855A/en
Priority to DEU7153D priority patent/DE367252C/de
Priority to FR521079A priority patent/FR521079A/fr
Application granted granted Critical
Publication of US1405855A publication Critical patent/US1405855A/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
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • 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
    • D05B3/02—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 with mechanisms for needle-bar movement
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B53/00—Thread- or cord-laying mechanisms; Thread fingers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B61/00—Loop holders; Loop spreaders; Stitch-forming fingers
    • 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
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00—Applied objects or articles
    • D05D2303/02—Tape
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00—Applied objects or articles
    • D05D2303/08—Cordage

Definitions

  • Theinvention relates to new anduseful improvements in stitchlforming mechanisms for sewing machines, and more particularly to the mechanism for laying a crossthread between and connecting needle threads on the upper surface of the fabric.
  • An object of the invention 1 character having a thread-hook for engaging the cross-thread and forming a loop therein, and with a stationaryV finger against which the cross-thread is drawn bythe hool
  • Figure 2 is an enlarged front view of the end of the sewing machine with the edging guide removed;
  • Figure Si an end view of the machine, showing the parts at the end of the overhanging arm, the overhangingarm being omitted;
  • Figure isV a view partly in top plan and'partly in section, the section being taken directly beneath the lower bearing ofthe cverhanging arm; l
  • Figure 5 is a perspective view showing the' needles, the thread-hook, the thread nger and the thread-'guides forthe cros ⁇ - thread, the hook'being at the forward end of its stroke;
  • Figure 6 is a plan View showing the Athread s to provide ,y a stitch-forming mechanism ofthe above llA in part y'be obvious and willin part be hereinafter morey 1917; Serial No.. 1"s1,2os.
  • Figure 7 is a'view similar to. Figure 5,
  • Figure 8 is av plan Vview showing the thread-hook, thethrea'd-finger and the fixed thread-guides for the cross-thread;
  • FIG. 10 is a 'diagrammatic view, showing the relation of the threads to the fabricv 'n and the edging.
  • the invention is embodied 'in' astitching y mechanism consisting of a plurality' of needles whichv are arranged abreast andwith which a single looper co-operates beneath ⁇ the Work support. (lo-operating vwith these needles above the work support is a crossthread-laying hook adapted to engage a cross-thread and form a loop therein for one of the needles to enter.,
  • Vcross-thread-l'aying Vhook Associated with the Vcross-thread-l'aying Vhook is a finger against which the cross# thread is drawn, and this finger is so shaped that the pull of the hook on the cross-thread will cause the cross-thread 'to slide( rear Wardly on the finger and be positioned between the needles. Also associated with the finger and the cross-thread-laying hook is a needle bar, through Vwhich the cross-thread extends, andthis thread-guide on its .downward movement serves to bring the lcrossthread to its forward position on the' threadfingerwhere it willbe engaged by the hook thread-guide movable up and down with the as it next movesy forward to form a loop.
  • my improved stitch-forming mechanism is shown as applied to a sewing machine having a work support 1, an overhanging arm 2 in which reciprocates a needle bar 3, carrying a pair of needles 4 and 5; (3o-operating with the needles 4f and 5 beneath the work support' is a threaded looper 6. Said looper is pivoted at 7 and is oscillated by alink 8. This link 8 is pivoted at its other end to the needle lever extension 9 carried bythe needle lever l0.
  • the needle lever 10 is connected by a link l1 to the needle bar@
  • the needle lever is'oscillated by the eccen Y triclstrap 12 which, eo-operateswith the eccentric on the main shaft, and the main shaft is rotated by the usual belt wheel'13.
  • the material is held on the worksupport by a presser foot 14 carried by a presser bar 154 mounted in the overhanglng arm.
  • needle 4 is provided with a needle-thread 4,
  • the needles pass down through the fabric vand the looper enters, ⁇ both threaddoops formed by the needles, and the looper-thread is thereby concatenated' ⁇ with both needlethread loops.
  • j p The needle-threads are joined on the upper face of the fabric by a cross-thread 20. This secured to a bracket 25 attached to the overhanging arm of the machine.v An arm 22 ⁇ carried by the needle bar .engages the crossthread between the guides 22, 22 for pulling,
  • the needle bar d3 Mounted on the needle bar d3 is an arm 26 havinga thread-eye 27.- The cross-thread passes through thisvthread-eye; Thecross'- thread is formed into loops by a thread-hook 'y means of screws 33, 33.L
  • the lever. 32 extends to lthe rear of the overhang-ing' arm, 'and is 28.v v V'1 ⁇ histhread-hook is formed with'a notched end 29 and-with a shank 30, which' extends vertically vthrough a sleevel carried by a lever orf thread-hook carrier 32.
  • the shankO is adjustably held in the sleeve: by
  • bracket 25 pivotally supported by the bracket 25.l Said brackethas'spaced ears carrying a vertical i shaft 34, to which the lever 32 is secured. Y
  • the lever32 is'provided with a ball stud 35 and a link 86bis pivotally attached to this vball stud.
  • the link 36 at itsother end is piv- :otally connected at 39 to a bracket 40 carried at the lower end of the needle lever extension 9. As the needle lever extension oscillates, the lever 32 will be oseillated, and thiswill move' the vthread-hook back and forth across lthe line of feed, or across a vertical plane passing centrally between theneedles.
  • the thread-finger 41 asV sho-wn in the drawings, is provided with a slot 43.
  • the wall 44 of this slot is, however, the only active .surface against which the threadvis moved.
  • thissurface is shownas yconsisting of a concave. curved surf-ace, which leads into a convex curved'surface, the convex curved surface forming theV curved shoulder 45.-
  • thread-hook is at the extreme rear end of its stroke.
  • the threadeguide 27l for the cross-thread is at the lower end of its stroke' 'and is so disposed relative to the linger 41 as to draw thecross-thread vforward on the finger to a point adjacent the forward .Vendi Whenthe cross-thread is thus of the slot. j y positioned, as the hook moves forward, Yit
  • the notch in the thread-hook moves-underneath the finger at thel forward end of the curved slot.
  • the cross-thread After the' hook has engaged the cross-thread, it forms the crossthread yinto a looprin the well known way, which loop wil-l be entered bythe needle farthest from the thread-finger. It is also desirable that the cross-thread should pass4 between As the hook; moves forward,
  • thread-hook may be adjusted vertically and also the thread-finger may be .adjusted vertically, to bring 4these parts intoproper 'co-operative position relative tothe needles.
  • a feeding mechanism a reciprocatory thread hook for forming loops in a cross thread for one of said needles to enter, means for operating said hook, a guide for the cross thread
  • the needle-threads are lcondisposed in a' position -above the vpath vof movement of :thefree end of the hook and voperatingto position the thread infront of the; hook so that said-hook ywill engage the thread withv certainty, and means; against which one strand'of the loop is carried byy the forward movement of said hook whereby said vstrandLwill be positioned between the f'-needles, -and'feeding mechanism operating .to

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US181208A 1917-07-18 1917-07-18 Stitch-forming mechanism for sewing machines Expired - Lifetime US1405855A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US181208A US1405855A (en) 1917-07-18 1917-07-18 Stitch-forming mechanism for sewing machines
DEU7153D DE367252C (de) 1917-07-18 1920-07-10 Naehmaschine zur Herstellung zweier nebeneinanderliegender, durch einen auf dem Stoff liegenden Querfaden verbundener Naehte
FR521079A FR521079A (fr) 1917-07-18 1920-07-26 Mécanisme couseur, pour machines à coudre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US181208A US1405855A (en) 1917-07-18 1917-07-18 Stitch-forming mechanism for sewing machines
DEU7153D DE367252C (de) 1917-07-18 1920-07-10 Naehmaschine zur Herstellung zweier nebeneinanderliegender, durch einen auf dem Stoff liegenden Querfaden verbundener Naehte
FR521079T 1920-07-26

Publications (1)

Publication Number Publication Date
US1405855A true US1405855A (en) 1922-02-07

Family

ID=26000847

Family Applications (1)

Application Number Title Priority Date Filing Date
US181208A Expired - Lifetime US1405855A (en) 1917-07-18 1917-07-18 Stitch-forming mechanism for sewing machines

Country Status (3)

Country Link
US (1) US1405855A (de)
DE (1) DE367252C (de)
FR (1) FR521079A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776157A (en) * 1972-04-18 1973-12-04 Union Special Machine Co Flat stitch forming and cover thread laying mechanisms for sewing machines
US20060107885A1 (en) * 2004-11-16 2006-05-25 Shogo Hasegawa Upper decorative stitching device
US20100048738A1 (en) * 2006-05-15 2010-02-25 Rhodia Operations Hybrid compounds based on polyol(s) and at least one other molecular entity, polymeric or non-polymeric, in particular of the polyorganosiloxane type, process for the preparation thereof, and applications thereof
US20100077949A1 (en) * 2008-09-26 2010-04-01 Takayuki Hayashida Sewing machine for covering chain stitch
WO2011021954A1 (ru) 2009-08-19 2011-02-24 Saleev Eldar Rafaeljevich Устройство и способ для тренировки связок и мышц нижних конечностей

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776157A (en) * 1972-04-18 1973-12-04 Union Special Machine Co Flat stitch forming and cover thread laying mechanisms for sewing machines
US20060107885A1 (en) * 2004-11-16 2006-05-25 Shogo Hasegawa Upper decorative stitching device
US7107919B2 (en) * 2004-11-16 2006-09-19 Hosei Mishin Seizo Kabushiki Kaisha Upper decorative stitching device
US20100048738A1 (en) * 2006-05-15 2010-02-25 Rhodia Operations Hybrid compounds based on polyol(s) and at least one other molecular entity, polymeric or non-polymeric, in particular of the polyorganosiloxane type, process for the preparation thereof, and applications thereof
US20100077949A1 (en) * 2008-09-26 2010-04-01 Takayuki Hayashida Sewing machine for covering chain stitch
US8220401B2 (en) * 2008-09-26 2012-07-17 Yamato Mishin Seizo Kabushiki Kaisha Sewing machine for covering chain stitch
WO2011021954A1 (ru) 2009-08-19 2011-02-24 Saleev Eldar Rafaeljevich Устройство и способ для тренировки связок и мышц нижних конечностей

Also Published As

Publication number Publication date
FR521079A (fr) 1921-07-06
DE367252C (de) 1923-01-18

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