US3556029A - Thread-braking device for needle threads - Google Patents

Thread-braking device for needle threads Download PDF

Info

Publication number
US3556029A
US3556029A US838239A US3556029DA US3556029A US 3556029 A US3556029 A US 3556029A US 838239 A US838239 A US 838239A US 3556029D A US3556029D A US 3556029DA US 3556029 A US3556029 A US 3556029A
Authority
US
United States
Prior art keywords
thread
brake
guide
braking device
reversing
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
US838239A
Other languages
English (en)
Inventor
Oskar Eigenmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3556029A publication Critical patent/US3556029A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/12—Stationary elements arranged to deflect material from straight path
    • B65H59/14—Stationary elements arranged to deflect material from straight path and provided with surfaces imposing additional retarding forces on material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Another braking device provides an axially extending rod adjacent the peripheral surface of the brake drum, and threads are guided about the rod and have portions engaging the braking surface of the drum.
  • the rod By revolv- .ing the rod about the axis of the drum outwardly of the periphery of the same, the circumferentiallength of the portions of the brake surface of the drum engaged by the threads is varied, so'that the brake force is adjusted.
  • the apparatus has the disadvantage that the threadingof the threads about the rod is difficult, and that thethreads slide in axial direction along the rod and become entangled.
  • the present invention provides an angularly adjustable braking device provided with a plurality of reversing thread guides through which open loops of the threads are arethreaded whereby. two thread portions move van axis; at least one, and preferably a plurality of reversing thread guides secured to the periphery of the brake meansi first guide means for supplying a-thread to the reversing thread guide; second guide means for guiding the thread away from the thread guide; and adjusting means for turning the brake means with the reversing thread guide in opposite directions.
  • the thread guide holds a doubled-up thread forming an open loop having a head portion slidably engaging the reversing thread guide, andfirst and second leg portions enthread to the firstleg portion of the open loop. and move thread away from the second leg portion.
  • the adjusting means turn the brake means, the circumferential length of the portions of the brake surface engaged by the leg portions of the open loopis varied, so that the brake force acting on the "thread is adjusted.
  • the adjusting means may be manually operated, but can also be operated under the control of program control means 19A which also control the operations of the needles to which the threads are supplied.
  • Each reversing thread guide is preferably an'open hook permitting easy insertion of'the thread, and the peripheral surface of the brake drum is advantageously covered' with a plush cover.
  • the first .and second guide means by-which the thread is ,supplied to and removed from the braking drum, are preferably angularly-staggered about the axis of the brake meansso that the circumferential. lengths of the portions of the brake surface engaged by leg portions of the open loop, are different.
  • FIG. I is a fragmentary side elevation illustrating a braking deviceaccording to the invention.
  • FIG. 2 is a front elevation illustrating the braking device and adjusting means for the same as provided in a two-tier cmbroidery machinerand FIG; 3 is a fragmentary side elevation of the apparatus illustrated in FIG. 2, part of the machine being omitted for the sake of clarity.
  • Two rows of bobbins 1 are provided in each tier of the machine, and as best seen in FIG. 1, two rows of pins or spindles 2 are mounted on a supporting plate 3 and rotatably support bobbins 1 so that threads 6 can be wound off bobbins I.
  • Support plates 3 are secured to supporting frame parts 22 on bothsides of the machine, only one frame part being shown in FIG. 2.
  • First thread guide means 5 are provided which include two rows of guide eyes 5a through which threads 6 are threadedAdjacent each guide eye, a friction cover 20'. which gaging circumferential portions of the peripheral brake surface.
  • the first and second guide means respectively supply may consist of a plush fabric, is provided for increasing the friction of threads 6.
  • Braking drums 8 are mounted in the upper and lower portions of the machine, as shown in FIG. 2,
  • a coupling means 21 permits turning of shaft 18a with worm 15 relative to a shaft 18 which, together with shaft 17, is turned by,an adjusting means 19, which may be a brake motor. By operation of adjusting means 19, brake drums 8 are simultaneously turned.
  • Brake drum 8 has a cylindrical hollow body covered by a tubular sleeve 20 consisting of plush fabric. A row of axially spaced reversing thread guides 7 is secured to the upper portion of brake drum 8.
  • the threads 6 passing through alternating staggered guide eyes 50 pass over a circumferential part-cylindrical portion of the outer peripheral brake surface of cover 20 from a point a to a reversing thread guide 7.
  • the thread is guided through the reversing thread guide and doubled-up with the thread guide from guide means 5 so that between the point a and the respective reversing thread guide, an open loop consisting of a head portionslidably guided by reversing thread guide'7, and two leg portions abutting the outer brake surface of cover 20 is formed.
  • the reversed thread portion is guided over the brake surface to the point b .and then guided over a second guide means 9 which extends along the length of the brake drum 8 to guide all threads-6 toward a pair of rods 23 and 24 mounted on levers l0 and 11.
  • threads 6 are guided to the needles of a textile machine, such as an embroidery machine. Due to the operations of the needles, threads 6 are pulled in the direction of the arrowwhile being supplied through guide eyes 5a from bobbins l.
  • the portions-of each thread 6 between point a and the respective reversing thread guide 7, and the portion between thesame and the point b move in opposite directions and encounter friction to an amount depending on the circumeyes 5 and the adjacent friction covers 20 equalizes the tensions of the portions of threads 6 between the braking drum 8 and the bobbins 1.
  • each brake drum 8 depends on its angular position. For example, when brake drum 8 in H0. 1 is turned in counterclockwise direction, the reversing thread guide 7 approaches the point a, and one leg of an open loop formed by a thread 6 is eliminated so that the brake force is reduced. On the other hand, if the brake drum is turned in clockwise direction, reversing thread guide 7 moves to the right, and the length of the open loop and of the corresponding brake surface portion engaged by the same is increased, resulting in a greater braking force.
  • the adjusting means 19 has manual means so that the adjustment of the brake force of each brake drum 8 can be obtained by manual operation. Such manual adjustment may also be carried out in accordance with the texture and quality of the threads used.
  • coupling means 21 When coupling means 21 is loosened, shafts l8 and 180 can be turned relative to each other for obtaining a different relative angular position of the upper and lower brake drums 8.
  • the reversing thread guides are open hooks located in planes perpendicular to the axis of brake drum 8, it is very easy to thread each thread 6 through a reversing guide hook 7 to form the open loop consisting of a leg portion extending to point a, a second leg portion extending to point b, and a head portion passing over a portion of the reversing guide hook 7.
  • Thread-braking device comprising, in combination, a brake means having a peripheral brake surface; means mounting said brake means for turning movement about an axis; at least one reversing thread guide secured to the periphery of said brake means and being adapted for holding a doubled-up thread forming an open loop having a head portion slidably engaging said reversing thread guide and first and second leg portions engaging circumferential portions of said peripheral brake surface; first guide means for supplying to said peripheral brake surface a thread forming said first leg portion of said open loop; second guide means for guiding said thread of said second leg portion away from said peripheral brake surface so that said first and second leg portions of said open loop slide in opposite directions on said portions of said brake surface; a and adjusting means for turning said brake means with said reversing thread guide in opposite directions for varying the circumferential lengths of said portions of said brake surface engaged by said first and second leg portions, respectively, whereby the brake force acting on said thread is adjusted.
  • Thread-braking device as claimed in claim 1 wherein a plurality of axially aligned reversing thread guides is secured to said braking surface of said brake means; wherein said first guide means include a plurality of guides for supplying a plurality of threads which are respectively doubled-up on said brake surface by said reversing thread guides; and wherein said second guide means guide said threads away from said peripheral brake surface.
  • Thread-braking device as claimed in claim 1 wherein said brake means includes a brake drum having a peripheral cylindrical brake surface.
  • Thread-braking device as claimed in claim 1 wherein said first and second guide means are disposed angularly spaced from each other about said axis so that the circumferential lengths of said portions of said brake surface engaged by said first and second leg portions, respectively, are different.
  • Thread-braking device as claimed in claim 1 wherein said reversing thread guide is an open hook.
  • Thread-braking device as claimed in claim 1 wherein said reversing thread guide is a hook located in a plane perpendicular to said axis, and being open on one side, and closed on the other side for slidingly engaging said head portion of said open loop.
  • Thread-braking device as claimed in claim 1 wherein a plurality of axially aligned reversing thread guides is secured to said braking surface of said brake means; wherein said first guide means include a plurality of guides for supplying a plurality of threads which are respectively doubled-up on said brake surface by said reversing thread guides; wherein said second guide means guide said threads away from said peripheral brake surface, and are adapted to guide the threads to the needles of a textile machine; comprising program control means for said machine; and wherein said program control means operate said adjusting means in accordance with the operations of said needles.
  • Thread-braking device as claimed in claim 1 including means for manually operating said adjusting means.
  • Thread-braking device as claimed in claim 1 wherein said first guide means include a guide eye for the thread, and a brake surface adjacent said guide eye for frictionally engaging said thread.
  • Thread-braking device as claimed in claim 1 wherein said brake means includes a brake member, and a cover surrounding said brake member, said cover being made of plush fabric and forming said peripheral brake surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US838239A 1968-07-10 1969-07-01 Thread-braking device for needle threads Expired - Lifetime US3556029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1029068A CH470514A (de) 1968-07-10 1968-07-10 Bremsvorrichtung für Nadelfäden, insbesondere an Schiffchenstickmaschine oder Steppmaschine

Publications (1)

Publication Number Publication Date
US3556029A true US3556029A (en) 1971-01-19

Family

ID=4361578

Family Applications (1)

Application Number Title Priority Date Filing Date
US838239A Expired - Lifetime US3556029A (en) 1968-07-10 1969-07-01 Thread-braking device for needle threads

Country Status (6)

Country Link
US (1) US3556029A (de)
JP (1) JPS5337783B1 (de)
AT (1) AT282319B (de)
CH (1) CH470514A (de)
DE (1) DE1929310A1 (de)
FR (1) FR2012686A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467314B1 (en) * 1999-02-09 2002-10-22 Memminger-Iro Gmbh Method and apparatus for pairing threads in textile machine
US20070119353A1 (en) * 2005-11-17 2007-05-31 Yamato Sewing Machine Seizo Co., Ltd. Thread supplying device of sewing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT370144B (de) * 1979-02-20 1983-03-10 August Heinzle Einrichtung zur zufuehrung und zum nachziehen des fadens an textilmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696608A (en) * 1950-08-08 1954-12-07 Hangartner Erwin Thread guard device
US2746410A (en) * 1953-11-12 1956-05-22 Broad Street Machine Company Uniform tension feeding mechanism
FR1254660A (fr) * 1960-04-19 1961-02-24 Tuellmaschb Karl Marx Stadt Ve Dispositif d'amenée de la chaîne de fils d'une machine à coudre à plusieurs aiguilles, machine à tricoter chaîne ou machine analogue
US3009433A (en) * 1958-08-01 1961-11-21 Pathe Equipment Company Inc Automatic stop device for multineedle sewing machines
CH405055A (de) * 1962-12-11 1965-12-31 Saurer Ag Adolph Aus Fadenwalze und Fadenleiter bestehende Brems- und Leitvorrichtung für die Stickfäden von Stickmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696608A (en) * 1950-08-08 1954-12-07 Hangartner Erwin Thread guard device
US2746410A (en) * 1953-11-12 1956-05-22 Broad Street Machine Company Uniform tension feeding mechanism
US3009433A (en) * 1958-08-01 1961-11-21 Pathe Equipment Company Inc Automatic stop device for multineedle sewing machines
FR1254660A (fr) * 1960-04-19 1961-02-24 Tuellmaschb Karl Marx Stadt Ve Dispositif d'amenée de la chaîne de fils d'une machine à coudre à plusieurs aiguilles, machine à tricoter chaîne ou machine analogue
CH405055A (de) * 1962-12-11 1965-12-31 Saurer Ag Adolph Aus Fadenwalze und Fadenleiter bestehende Brems- und Leitvorrichtung für die Stickfäden von Stickmaschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467314B1 (en) * 1999-02-09 2002-10-22 Memminger-Iro Gmbh Method and apparatus for pairing threads in textile machine
US20070119353A1 (en) * 2005-11-17 2007-05-31 Yamato Sewing Machine Seizo Co., Ltd. Thread supplying device of sewing machine
US7347153B2 (en) * 2005-11-17 2008-03-25 Yamato Sewing Machine Seizo Co., Ltd. Thread supplying device of sewing machine

Also Published As

Publication number Publication date
DE1929310A1 (de) 1970-01-15
JPS5337783B1 (de) 1978-10-11
AT282319B (de) 1970-06-25
CH470514A (de) 1969-03-31
FR2012686A1 (de) 1970-03-20

Similar Documents

Publication Publication Date Title
ES2204567T3 (es) Metodo y dispositivo para aplicar hilo de cordon o cintas sobre telas en una maquina de acolchado.
US2724065A (en) Magnetic drag for control of yarn tension
TW201802316A (zh) 張力控制結構
US3556029A (en) Thread-braking device for needle threads
US2646943A (en) Tension control device
US1596095A (en) Thread-tension device
US2889792A (en) Multi-needle embroidery machine
US3050972A (en) Take-up mechanism for knitting machines
US2023515A (en) Thread feeding mechanism
US3089447A (en) Tension regulator for sewing machine presser bar
US2578018A (en) Warp beam collar
US2884882A (en) Sewing machine with finger to control bobbin thread
US2377951A (en) Sewing machine
US1312799A (en) moffatt and r
US2434782A (en) Power-operated flat frame knitting machine
US1467443A (en) Tension-thread guide
US2357716A (en) Means for guiding threads from cops, spools, or the like
US2238992A (en) Textile device
US3307378A (en) Knitting apparatus
US3290902A (en) Knitting apparatus and method
US1874379A (en) Yarn supporting, tensioning, and take up device
US2161394A (en) Stretching device
US2049755A (en) Tension device for knitting machines
US2630982A (en) Tension control for full fashion hosiery machines
US2182940A (en) Thread guiding device