US1977573A - Machine for drawing threads in fabrics - Google Patents

Machine for drawing threads in fabrics Download PDF

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Publication number
US1977573A
US1977573A US599906A US59990632A US1977573A US 1977573 A US1977573 A US 1977573A US 599906 A US599906 A US 599906A US 59990632 A US59990632 A US 59990632A US 1977573 A US1977573 A US 1977573A
Authority
US
United States
Prior art keywords
blade
throat
plate
feed
ledger
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
US599906A
Other languages
English (en)
Inventor
Corrall Herbert
Heggie James
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
Application granted granted Critical
Publication of US1977573A publication Critical patent/US1977573A/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
    • 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
    • D05B3/04—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 work feed

Definitions

  • This invention relates to machines-for 4drawing threads in fabrics; ofthat class .having ka ledger blade tted to the throat-plate, a presser bar and a' piercer bar above ,the throat-plate, and
  • the machine according'to 'the invention is equipped :with fabric-feeding'l mechanism' comprising lfeed-dogs spring-urged towards one an# other and movableV apart by theaction yof a'cam orwedgein the advance feeding movementaof' said feed-dogs. .Y Y A.
  • Fig. ⁇ 3 is av plan view of the"mechanisrn'below ⁇ the throat-plate;
  • Fig. 4 isfa vertical sectionrat'vright 1v angles to Figs'. ⁇ 1 and-12, the :throat-plate being in? section, on the line c-c of Fig. 5.
  • Fig. 5 is adetail plan'view of thethroat-plate with the feed- .dogs projecting upwardly-.through slots in the latter;
  • Figs. 6 and 7 are vertical sections also on the lines a-a and b-b, respectively, of Fig. 5;
  • Fig. 3 is a vertical transverse section also on the line c-c of Fig. 5;
  • Figs. 9-15 are detail views of .mgthe components of the feeding mechanism;
  • 16 is a plan view of the presser foot.
  • 1 denotes the usual serrated piercer blade carried by the vertically reciprocating piercer bar 1, 2 the presser foot,
  • the feed-dogs 5 are unitary with the feed-bars or levers 8 pivoted at 9, at the ends adjacent to the operator, to a carrier frame 10 pivotally connected at 11 to arms 12 unitary with the feed rock shaft 6. Rollers 13 mounted one on the end ⁇ j1jpf each feed-bar or lever 8 remote from the pivot 9 are engageable with divergent faces 14 present ⁇ edbyracam ⁇ 15 secured tothe underside of the throat-plate: 3, rwhereby the levers l8 and therewith'the feed-.dogsare-spread further apart 4in the advance .movement of the feed-dogs, in oppo-I so .aszto eiectzstret-chingof.
  • the spring 1.6 is heldin position under :a lug I7. unitary with a keeper plate 18 penetrated'by the pivots 9..
  • Theledger blade 24 ' is constituted as a blade springha'ving 'ai rbifurcated operative end overlying a cut-"away'lS'in the throat plateland present-A ing aicuttng *edgev 25 flanked by prongs 26-which arecontacted'by the lateral portions of the-broad 30 cutting edge offthe-cutter4 before said broadv cutting edge cooperates withthe edge 25.
  • the prongs 26 restonr-thatedge o'f'the cut-away 3''35 remote ffrom'the operator and the.- end of the blade adjacent to'- the. operator'is” anchored to the throat'plate by a screw 28 penetrating a slot. 2.9-.in the blade - ⁇ 24.l 'By adjustment.4 of screws 30. threadedjntoiapertures in the throatv plate, .one 90 at each side of the blade 24 intermediate the ends thereof, with their heads engaging the blade, the blade may be exed between its points of support so as to bring its cutting edge 25 into correct position for cooperation with the cutter L 4.
  • the blade 24 By slackening the screw 28 the blade 24 mayV be adjusted in a direction transverse to its cutting edge 25 to bring said cutting edge into correct position relatively to the cutter 4.
  • the cutaway 3 is so dimensioned as regards width with 100 respect to the blade 24 that gaps 31 are afforded between the lateral edges of the cut-away and the blade 24.
  • reflex wire springs 32 carried by the presser foot 2 and adapted to 105' maintain under tension the cross threadsV of the draw.
  • the presser foot 2 is of skeleton form, ⁇ being universally connected to a bracket 33 on the presser bar 33 by means of a forked bracket 34 pivotally connected at 35 to the presser foot and at 36 to the bracket 33.
  • thecutter 4 performs one rotation for each feeding movement and the piercer blade l in its descent depresses path of the rotary cutter 4 which severs said ,threads in cooperation with the ledger blade.
  • a throat-plate formed in its upper face 'with a recess and with a cut-away, a flexible-'ledger 355 blade securedat one end to said throat-plate and overlying said recess, said ledger-blade supported by said throat-plate at its opposite end and having a cutting edge overlying said cut-away, screws threaded into said throat-plateand engageable 463 with said ledger blade above the recess for flexing ⁇ said ledger blade intermediatev its ends,and a movable thread-cutting blade below said throatplate co-operating with said ledger blade.
  • a throat- 453 plate In a ⁇ thread-drawing machine, a throat- 453 plate, a vertically reciprocatory piercer, a ledger blade, a movable thread-cutting blade vbelow said throat-plate cooperating with .saidl ledger blade,l work-advancing feed-dogs spaced crosswise' of *the direction of feed of the work, a feed-bar pivotal- 5'53 lysupporting said feed-dogs for vibratory move-j ments Vtoward and from each other about substantially vertical axes, means for actuating said feed-bar, guiding means upon said feed-.bar confining said feed-dogs against 'sidewise tilting movements, means beneathsaid throat-plate for and work-presser means.
  • a throatplate In a thread-drawing machine, a throatplate; a ledger blade tted to said throat-plate,
  • throatplate A provided with a .piercer opening and with feed-dog slots at opposite sides of said piercer opening, a ledger bladettedto. said throat-plate and having a ⁇ .cutting edge insaidpiercer opening, a vertically reciprocatory piercer, a movable; thread-cutting blade below said throat-plate cooperating with said ledger blade, a feed-bar below said throat-plate, means for actuating said feed-g bar, ⁇ laterally spaced. feed-dog carrying levers each pivotally secured at one end to said feed. ⁇

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knives (AREA)
  • Road Signs Or Road Markings (AREA)
  • Road Paving Structures (AREA)
US599906A 1931-04-08 1932-03-19 Machine for drawing threads in fabrics Expired - Lifetime US1977573A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB161550X 1931-04-08
GB80132X 1932-01-08

Publications (1)

Publication Number Publication Date
US1977573A true US1977573A (en) 1934-10-16

Family

ID=26241821

Family Applications (1)

Application Number Title Priority Date Filing Date
US599906A Expired - Lifetime US1977573A (en) 1931-04-08 1932-03-19 Machine for drawing threads in fabrics

Country Status (5)

Country Link
US (1) US1977573A (fr)
CH (1) CH161550A (fr)
DE (1) DE586996C (fr)
FR (1) FR41592E (fr)
GB (1) GB376303A (fr)

Also Published As

Publication number Publication date
DE586996C (de) 1933-10-28
GB376303A (en) 1932-07-08
CH161550A (de) 1933-05-15
FR41592E (fr) 1933-02-07

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