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US2471362A - Feeding apparatus for yarn or the like - Google Patents

Feeding apparatus for yarn or the like Download PDF

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Publication number
US2471362A
US2471362A US317923A US31792340A US2471362A US 2471362 A US2471362 A US 2471362A US 317923 A US317923 A US 317923A US 31792340 A US31792340 A US 31792340A US 2471362 A US2471362 A US 2471362A
Authority
US
United States
Prior art keywords
yarn
tension
coils
discs
cylinder
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
US317923A
Other languages
English (en)
Inventor
Vin Rene
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.)
PORON Ets Ste
PORON SOC ETS
Original Assignee
PORON SOC ETS
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 PORON SOC ETS filed Critical PORON SOC ETS
Application granted granted Critical
Publication of US2471362A publication Critical patent/US2471362A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices
    • 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

  • the present invention has for its object, a process for feeding yarn or the like to a loom, at a constant, delivery and as a new manufactured product, a feeding apparatus for yarn or the like, adapted to supply ,the yarn to a knitting machine in such conditions that the resulting product will have the desired regularity.
  • the apparatus can deliver the yarn at each instant at the desired tension or speed, and particularly at constant tension or speed.
  • the apparatus differs from the ones which are already known, by the simplicity and eflicacity of the means employed, and for elastic yarns, in particular, it affords results which have not hitherto been obtained.
  • the said feeding device is chiefly characterized by the use of at least one rotatable device which is driven by any suitable means, upon which the yarn is caused to make several coils, and which cooperates with at least one stationary device for supporting the spiral coils of the yarn, and this permits, by rotating the said device at the desired speed, of modifying the tension of the yarn between the input end and the exit, and chiefly, when using a yarn having a variable tension at the input, of obtaining, at the exit, a tension which is practically zero, or again, when using a constant tension which is practically zero, at the input end, of obtaining at the exit a speed or delivery of the yarn which will be exactly constant.
  • Fig. 1 is an explanatory diagram.
  • Fig. 2 is a diagrammatic perspective view of a device for the delivery of a yarn whose tension is equal to zero.
  • Fig. 3 is a like view of a modification.
  • Fig. 4 is a diagrammatic view of another device for obtaining a yarn having a constant delivery.
  • Fig. 5 is a front view of a construction according to the diagram shown in Fig. 4.
  • the yarn is drawn between the feeding reel and g the knitting machine, upon a rotatable device I,
  • the tangential speed of the rotatable device is greater than the speed of the yarn, at each point.
  • the tension at the exit would be a constant fraction of the intake tension, and the device would act as a tension reducer.
  • the present invention permits of obtaining, in all cases, an exactly constant tension, and this outgoing tension is in fact practically equal to zero, provided on has a sufficient value and the rate of rotation is satisfactory.
  • Supporting means are provided in order to prevent the last turn or turns of the yarn (which are slack on account of the low tension) from becoming tangled, and interfering with the regular feeding of the yarn.
  • the apparatus according to the invention will act not only as a reducer, but also as a regulator of tension. 7
  • the supporting means which are shown diagrammatically at 2 in Fig. 1, preferably consist, as represented in Fig. 2, of stationary discs 2 which are mounted on a support 3 and are provided with apertures 4 for the coils of yarn, which are thus separated by the said discs.
  • I is the coefiicient of friction between the yarn and the supporting discs
  • a is the arc of contact of the yarn with said discs.
  • a. varies at each instant to give an output tension which is practically equal to zero, by dividing the coils passing over the device into two groups, the intake group, in which the coils fit upon the 'device, and the ontake group, in which the coils are slack and are held by the supporting'discs 2.
  • Fig. 3 represents a modification which comprises two drums and 6, and the supporting discs I surround both drums at the same time.
  • f'a. is much less than fa, a being greater. for a given number of coils, while a depends only upon the passage of the yarn at 8 and thus has a small value.
  • the passage of the yarn in the open slots 8 is also made easier, as the part which supports the discs (not shown) is mounted between the two cylinders inside of the coils.
  • the yarn which is fed under a tension and an elongation which are equal to zero can be used directly in the knitting machine without any tension or at a constant tension which may be given to it by any suitable device such as a pair of pressing washers, known per se; or at a determined speed by means of a set of two pressing rollers, cylindrical or tapered, or the like, but preferably by means of a rotating device analogous to the preceding.
  • any suitable device such as a pair of pressing washers, known per se; or at a determined speed by means of a set of two pressing rollers, cylindrical or tapered, or the like, but preferably by means of a rotating device analogous to the preceding.
  • t be the tension at the input of the feeder, and 1) its tangential speed. If the knitting apparatus tends to take up the yarn, which would be supplied to it directly at this tension P, at a speed greater than 1;, the feeder will limit the delivery of the yarn, used at this tension t to the speed a, which speed may be constant or controlled at will. It' is thus observed that the precision of the delivery will depend entirely upon the constancy of t or more exactly, upon the constancy of the elongation of the yarn, which depends upon this latter.
  • a feeding drum 9 whose exit tension is equal to zero, with a drum l0 whose input tension is equal to zero and whose delivery is constant, and this will provide a feeder whose delivery is strictly constant in spite of an input tension of any value, which may be variable.
  • the ratio between the diameters of the two drums corresponds to the maximum elongation of the yarn, i. e. to the breaking of said yarn, or to the release of a known uncoupling device not shown.
  • the supporting discs have been shown diagrammatically in the figure at 2a, but in fact, they are analogous to those of Fig. 2.
  • Fig. 5 shows an embodiment which again comprises, without need of a further description, the parts shown in the preceding figures.
  • the yarn arrives at II; it is wound upon the drum I2, and its turns pass between the plates 22 through the apertures [4.
  • the yarn passes over a yarn-guide 15, without tension. It proceeds over a yarn-guide Hi from which it passes to a guiding and supporting device I'l having orifices 18 for the passage of the coils. These latter cover the drum I9 and leave at 20, at the desired tension and speed.
  • provides for the driving of the two-drum apparatus at the desired speed, as above set forth.
  • Fig. 6 shows a detail of a device for guiding the yarn on the supporting discs 22 Without risk of damaging the yarn by jamming in the space between the discs and the drum.
  • washers 23 of triangular section. are placed loosely upon the discs, and can be readily adjusted, as they are mounted freely and are not secured.
  • the discs 22 can be given a diameter which is clearly greater than that of the drum, and the discs can be mounted without taking account of any eccentricity, which is now of no importance.
  • Fig. '7 shows another modification, in which the upper drum 24 comprises discs 25 by which the spiral turns of yarn can be better separated and supported, without risk of damage, for instance when the yarn is not taken up'by the knitting machine, on reciprocating knitting machines, or in like circumstances.
  • Figs. 8 and 9 show another embodiment of the invention in which a supporting member 26 is mounted between two parallel drums 21 and 28.
  • the member 26 surrounds the said drums upon a part of their periphery.
  • the parts are to be assembled in such way that there will be no play between the said member and the drums at the points 29, i. e. at the ends of the member which are closed to th drums.
  • the member 26 is provided with helicoidal ribs 30. Separating discs 3
  • the device shown in this figure may be combined with a second feeding device similar to that disclosed in Fig. 5,
  • the cylinders 32, 33 each carry sprockets 31', around which is a chain 39 engaging with another sprocket 38.
  • This sprocket is carried on a drum or rotating member 40 mounted to turn in member 34 between drums 32, 33.
  • having guide openings 42 similar to the openings l8 of Fig. 5.
  • the yarn is led from the lower end through eyelets 43 and 44 and holes 42 to make several turns around drum 4!] and is led ofl through eyelet 45.
  • Figs. 10 and 11 relate to another modification.
  • an inner member 34 there is provided, between the two drums 32 and 33, as in the preceding embodiment, an inner member 34, the width of which is greater than the diameter of said drums, and
  • helicoidal grooves 35 are cut in the member 34, whichgrooves are intended to support the slack coils of the yarn. Owing to the friction of the yarn in these deep and narrow grooves, the discs 3
  • the yarn is held in the grooves 35 by removable rods 36 which are parallel to the drums 32 and 33.
  • a feeding apparatus for yarn or the like the combination of a rotatable cylinder, mounted on a driving shaft, on which the yarn is caused to make a number of coils; a frame supporting said shaft; supporting plates rigid with said frame and surrounding said cylinder; means for guiding each coil of yarn from one side of a supporting plate to the other side; a second cylinder mounted on the same driving shaft, said second cylinder having a smaller diameter than the first cylinder; means adapted to guide the yarn from the output of said first cylinder to the input of said second cylinder; and an apertured device adapted to guide and support the coils of yarn round said second cylinder.
  • a rotatable means having at least one surface around which the yarn makes a number of coils, means to drive said first means, stationary supporting means closelyadlacent at least part of said surface for the last coils of the yarn, and-a rotatable device driven at a lower tangential speed than the first mentioned means.
  • a feeding apparatus for yarn or the like the combination of at least one rotatable cylinder having at least one surface around which the yarn makes a number of coils, means to drive said rotatable cylinder, stationary supporting means closely adjacent .at least part of said surface ior the last coils of the yarn, said supporting means surrounding at least partially said rotatable cylinder, and a second rotatable device driven at a lower tangential speed than the said cylinder, and on which the yarn fed by the said cylinder makes a small number of coils.
  • a feeding apparatus for yamor the like the combination of at least one rotatable cylinder round which the yarn is caused to make a number of coils, means adapted to drive said rotatable cylinder, stationary supporting means for at least the last coils of the yarn, said means surrounding at least partially said rotatable cylinder, and a second rotatable device driven at a lower tangential speed than the said cylinder and on which the yarn fed by the said cylinder is caused to make a small number of coils.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
US317923A 1939-04-07 1940-02-08 Feeding apparatus for yarn or the like Expired - Lifetime US2471362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR817875X 1939-04-07

Publications (1)

Publication Number Publication Date
US2471362A true US2471362A (en) 1949-05-24

Family

ID=9268564

Family Applications (1)

Application Number Title Priority Date Filing Date
US317923A Expired - Lifetime US2471362A (en) 1939-04-07 1940-02-08 Feeding apparatus for yarn or the like

Country Status (4)

Country Link
US (1) US2471362A (fr)
BE (1) BE476878A (fr)
DE (1) DE817875C (fr)
FR (2) FR857800A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641913A (en) * 1947-04-15 1953-06-16 Poron Ets Yarn feeding method and apparatus for knitting machines
US2752782A (en) * 1952-02-15 1956-07-03 Tno Device for inspecting and recording the appearance of threads and yarns
US5141170A (en) * 1989-03-11 1992-08-25 Sobrevin Societe De Brevets Industriels-Etablissement Friction thread feed device
US5190231A (en) * 1990-07-05 1993-03-02 Societe de Brevets Industriels-Establissement Feed device for travelling threads
ITTO20130335A1 (it) * 2013-04-24 2014-10-25 Lgl Electronics Spa Alimentatore di filato a tamburo rotante motorizzato, particolarmente idoneo al trattamento di filati presentanti elevata elasticità.
CN109733944A (zh) * 2018-11-16 2019-05-10 合肥智瑞工程科技有限公司 一种多管路、高效的电缆牵引装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9508197D0 (en) * 1995-04-21 1995-06-07 Brintons Ltd Yarn supply

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1482589A (en) * 1922-03-25 1924-02-05 Pacific J Thomas Thread spreader for doubling machines
US1482590A (en) * 1922-01-31 1924-02-05 Pacific J Thomas Thread spreader for doubling machines
US2002996A (en) * 1932-03-05 1935-05-28 American Bemberg Corp Continue process and apparatus
US2109863A (en) * 1936-02-18 1938-03-01 Hemphill Co Yarn feeding device
US2189492A (en) * 1938-10-08 1940-02-06 Worcester Knitting Company Compensator for feeding elastic thread
US2217225A (en) * 1935-05-21 1940-10-08 Hemphill Co Feeding means for knitting machines
US2220213A (en) * 1938-08-12 1940-11-05 Clay Philip Ernest Frank Method of producing elastic thread
US2296473A (en) * 1938-05-13 1942-09-22 John J Krehbiel Godet arrangement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1482590A (en) * 1922-01-31 1924-02-05 Pacific J Thomas Thread spreader for doubling machines
US1482589A (en) * 1922-03-25 1924-02-05 Pacific J Thomas Thread spreader for doubling machines
US2002996A (en) * 1932-03-05 1935-05-28 American Bemberg Corp Continue process and apparatus
US2217225A (en) * 1935-05-21 1940-10-08 Hemphill Co Feeding means for knitting machines
US2109863A (en) * 1936-02-18 1938-03-01 Hemphill Co Yarn feeding device
US2296473A (en) * 1938-05-13 1942-09-22 John J Krehbiel Godet arrangement
US2220213A (en) * 1938-08-12 1940-11-05 Clay Philip Ernest Frank Method of producing elastic thread
US2189492A (en) * 1938-10-08 1940-02-06 Worcester Knitting Company Compensator for feeding elastic thread

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641913A (en) * 1947-04-15 1953-06-16 Poron Ets Yarn feeding method and apparatus for knitting machines
US2752782A (en) * 1952-02-15 1956-07-03 Tno Device for inspecting and recording the appearance of threads and yarns
US5141170A (en) * 1989-03-11 1992-08-25 Sobrevin Societe De Brevets Industriels-Etablissement Friction thread feed device
US5190231A (en) * 1990-07-05 1993-03-02 Societe de Brevets Industriels-Establissement Feed device for travelling threads
ITTO20130335A1 (it) * 2013-04-24 2014-10-25 Lgl Electronics Spa Alimentatore di filato a tamburo rotante motorizzato, particolarmente idoneo al trattamento di filati presentanti elevata elasticità.
CN109733944A (zh) * 2018-11-16 2019-05-10 合肥智瑞工程科技有限公司 一种多管路、高效的电缆牵引装置

Also Published As

Publication number Publication date
BE476878A (fr)
DE817875C (de) 1951-10-22
FR857800A (fr) 1940-09-28
FR51075E (fr) 1941-08-06

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