US3677489A - Guide for unwinding thread from a package - Google Patents

Guide for unwinding thread from a package Download PDF

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Publication number
US3677489A
US3677489A US71746A US3677489DA US3677489A US 3677489 A US3677489 A US 3677489A US 71746 A US71746 A US 71746A US 3677489D A US3677489D A US 3677489DA US 3677489 A US3677489 A US 3677489A
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United States
Prior art keywords
package
fingers
guide
thread
diameter
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
US71746A
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English (en)
Inventor
George R Dilling
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.)
REED-CHATWOOD Inc
Original Assignee
Barber Colman Co
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Filing date
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Application filed by Barber Colman Co filed Critical Barber Colman Co
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Assigned to REED-CHATWOOD INC. reassignment REED-CHATWOOD INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BARBER-COLMAN COMPANY
Assigned to CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO, 231 SOUTH LASALLE STREET, CHICAGO, ILLINOIS 60697 reassignment CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPANY OF CHICAGO, 231 SOUTH LASALLE STREET, CHICAGO, ILLINOIS 60697 SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REED CHATWOOD, INC., A DE. CORP.
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • 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
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/06—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on material leaving the package
    • 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

  • guide includes curved fingers which swing in to achieve the collapsing of the guide.
  • Sheets-Sheet 3 GUIDE FOR UNWINDING THREAD FROM A PACKAGE BACKGROUND OF THE INVENTION This invention relates to a guide for thread as it is being unwound from a package for use in a loom or the like.
  • the general object of the invention is to provide a novel thread guide which materially reduces the pomibility of the thread sloughing on the package and accomplishes this whether a conical package or a cylindrical package is used.
  • the guide results in a low, uniform tension on the thread as it is withdrawn from the package and eliminates high tension peaks to reduce the possibility of thread breakage.
  • a more detailed object is to provide a generally circular but collapsible guide over which the thread passes as it is unwound and to collapse the guide progressively as the diameter of the package decreases so that the difference in the diameters of the guide and the package remains substantially constant, the guide being slightly larger than the package.
  • Another object is to achieve the foregoing by making the guide of a plurality of radially projecting fingers with curved outer end portions to give the guide its generally circular shape and by swinging the fingers inwardly to collapse the guide.
  • the invention also resides in the particular construction and arrangement of the fingers and the means for actuating the fingers.
  • FIG. I is a plan view of an unwinding mechanism utilizing the novel guide of the present invention.
  • FIG. 2 is an enlarged sectional view taken along the line 2- 2 in FIG. I.
  • FIG. 3 is a perspective view of one of the fingers and the associated shaft.
  • FIG. 4 is a view similar to FIG. I but showing the parts in a moved position.
  • FIG. 5 is an enlarged sectional view taken along the line 5- 5 in FIG. 4.
  • FIG. 6 is a fragmentary sectional view taken along the line 66 in FIG. 2.
  • FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6.
  • FIG. 8 is a fragmentary sectional view taken along the line 8-8 in FIG. 6 with the guide collapsed.
  • the invention is embodied in a mechanism for supporting a package 10 of thread or yarn as it is unwound by some device such as the weft controller ll of a shuttleless loom.
  • the thread 12 leaves the package, passes through a thread eye 13 which is coaxial with the package, and then is connected to the weft controller in a manner well known in the art.
  • the present invention contemplates the provision of a novel guide 14 disposed between the package 10 and the eye 13 to guide the thread 12 in such a manner as to reduce the possibility of the thread sloughing on the package and this is achieved whether the package is cylindrical or conical.
  • a novel guide 14 disposed between the package 10 and the eye 13 to guide the thread 12 in such a manner as to reduce the possibility of the thread sloughing on the package and this is achieved whether the package is cylindrical or conical.
  • the guide results in a low, unifonn tension on the thread and eliminates high tension peaks thereby reducing the possibility of the thread breaking.
  • the guide 14 is generally circular in shape and is collapsible so that its diameter may be progressively reduced as thread is unwound from the package.
  • the diameter of the guide is larger than the original diameter of the package so that, as shown in FIG. I, the thread 12 crossing the guide forms a preselected angle a, such as 3 to 5, with the package.
  • This angle varies somewhat as the thread passes back and forth between the ends of the package.
  • the guide is progressively collapsed so that the angle it remains substantially constant as will be seen by a comparison of FIGS. 1 and 4.
  • the guide 14 is made up of a plurality of fingers 15 which are spaced angularly around and project radialiy outwardly from a support 16 which is coaxial with the package 10.
  • the inner end portions 17 (FIG. 3) are pivotally connected to the support and the outer end portions 18 are curved, all being curved in the same direction, so that these outer end portions together form the generally circular guide 14 as shown in FIG. 2.
  • the diameter of the guide is increased and it is decreased when the fingers are turned clockwise.
  • the arrangement is such that the beginning diameter is set manually and then the fingers are power driven in the direction to collapse the guide at a rate correlated with the rate at which the thread is unwound from the package 10.
  • the core 19 (FIG. 6) of the package 10 surrounds a sleeve 20 which is concentric with the core and the rear end of the latter is pressed onto a flange 21 fixed to the sleeve 20.
  • the support 16 is mounted on the forward end of the sleeve 20 and includes a circular disk 22 with an axial flange 23 surrounded by a cup 2341 which is fitted into the end of the core 19.
  • a boss 24 projecting into the sleeve 20, the boss and the sleeve 20 being held together by a screw 25.
  • a second circular, two-part disk 26 spaced from the disk 22 by an axial flange 27 which is integral with the disk 26 and is seated in a recess 28 in the disk 22 with screws 29 fastening the two disks together.
  • Angularly spaced around the support 16 at equal distances are a plurality of shafis 30, one for each finger 15, which are equidistant from the axis of the support and span the disks 22 and 26, the shafis being journaled in the disks by bearings 31.
  • the inner end portion 17 of each finger is straight, projecting radially from its respective shaft 30, and is brazed to the shaft.
  • the curved outer end portion 18 is in a piane at a right angle to the plane of the inner end portion.
  • a gear 32 is keyed to each shaft 30 and meshes with a gear 33 fixed to a shaft 34.
  • the latter is coaxial with and disposed within the inner sleeve 20 and is journaled in bearings 35 in the inner sleeve and a bearing 36 in a tubular extension 37 on the disk 26.
  • 38 rear end of the shaft carries a conical member 38 which is the driven member of a clutch 39.
  • a motor 41 which may be set to turn at a selected constant speed, is disposed within a housing 42 which is mounted on a rail 43 of the loom frame by a bracket 44 (FIG. I).
  • a pinion 45 (FIGS.
  • the motor 41 turns the fingers 15 through the gears 45 and 47, the cam 49 and follower 50, the gears 56 and 57, the clutches 60 and 39 and the gears 33 and 32, the transmission resulting in a substantial speed reduction.
  • a knob 61 outside the housing 42 is keyed to the shaft 48 so that the fingers may be turned manually to set the guide 14 at its starting diameter.
  • a slip clutch 610 on the shaft 48 permits the knob to turn the cam 49 without turning the power drive train.
  • the housing is removably clamped to the sleeve 20.
  • a wedge 62 (FIG. 6) is clamped to a shaft 63 by a screw 64.
  • the shaft projects through the housing 42 and a handle 65 is attached to the outer end of the shaft for manually turning the wedge.
  • the core 19 of the old package may be pulled out of the cup 2341 and a new package it] may be set in place by inserting the cup in one end of the core 19 and forcing the other end of the core onto the flange 21, this reengaging the clutch 39.
  • the knob 61 is turned to swing the fingers 15 out until the diameter of the guide 14 produces the preselected angle a between the thread 12 and the package as shown in FIGS. 1 and 2.
  • the motor 41 is started.
  • the weft controller draws the thread 12 off the package and across the guide and, during the unwinding, the thread travels around the guide in a clockwise direction as viewed in FIG. 2.
  • the motor turns the gears 32 to swing the fingers l progressively inwardly so that, as shown in FIGS. 4 and 5, the diameter of the guide decreases as the diameter of the package decreases.
  • the cam 49 is shaped to gradually increase the speed at which the fingers turn to compensate for the increasing rate at which the diameter of the package is reduced and thus the angle 0 remains substantially constant.
  • the guide 14 may be set so that the thread l2 and the package form an angle which is least likely to result in thread sloughing on the package. Further, the progressive collapsing of the guide maintains this angle substantially constant throughout the unwinding operation.
  • An additional advantage is that the possibility of sloughing is reduced even if a cylindrical package is used and this permits the use of packages containing appreciably more thread and thus the package has to be replaced less frequently.
  • the guide maintains a low, uniform tension on the thread and materially reduces the possibility of thread breakage.
  • Mechanism for use in unwinding thread from a package of a predetermined diameter comprising, means adapted to receive and hold said package, a generally circular, collapsible guide member concentric with said package adjacent one end thereof and adapted to have the thread drawn across it as the thread is unwound from the package, the initial diameter of said guide being greater than the diameter of said package whereby the thread crossing the guide forms a preselected angle with the package, and means for progressively reducing the diameter of said guide as thread is unwound from the package to maintain a substantially constant angle between the thread and the package.
  • Mechanism as defined in claim 1 including means for setting said guide manually at the starting diameter.
  • Mechanism for use in unwinding thread from a package of a predetermined diameter comprising, means adapted to receive and hold said package, a support disposed adjacent one end of said package and concentric therewith, a plurality of fingers projecting radially outwardly from said support with their inner ends pivotally connected to the support, the outer end portions of said fingers being curved whereby the fingers together form a generally circular fiuidewhich collapses in diameter as the fingers turn in one rrectron and expands as the fingers turn In the other direction, the initial position of the fingers forming a guide of a diameter larger than the diameter of the package whereby the thread crossing the guide forms a preselected angle with the package, and means for progressively turning said fingers in unison to collapse said guide progressively as thread is unwound from the package and maintain a substantially constant angle between the thread and the package.
  • Mechanism as defined in claim 4 including means for manually turning said fingers to set said guide at the starting diameter.
  • Mechanism for use in unwinding thread from a package of a predetermined diameter comprising, means adapted to receive and hold said package, a support disposed adjacent one end of said package and concentric therewith and having a plurality of shafts angularly spaced equal distances around the axis of the support, a plurality of fingers, one projecting radially outwardly from each of said shafts with its inner end pivotally connected to the support on the associated shaft, the outer end portions of said fingers being curved whereby the fingers together form a generally circular guide which collapses in diameter as the fingers turn in one direction and expands as the fingers turn in the other direction, the initial position of the fingers forming a guide of a diameter larger than the diameter of the package whereby the thread crossing the guide forms a preselected angle with the package, and second means for progressively turning said fingers in unison to collapse said guide progressively as thread is unwound from the package and maintain a substantially constant angle between the thread and the package,
  • Mechanism as defined in claim 6 including means for manually turning said fingers to set said guide at the starting diameter.
  • said fingers are fast on said shafts and said second means includes a second shaft disposed within and concentric with said spindle, a plurality of driven gears, one fast on each of said finger shafts, a gear fast on said second shaft and meshing with the gears on said finger shafts, and a power actuator for turning said second shaft.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
US71746A 1970-09-14 1970-09-14 Guide for unwinding thread from a package Expired - Lifetime US3677489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7174670A 1970-09-14 1970-09-14

Publications (1)

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US3677489A true US3677489A (en) 1972-07-18

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US71746A Expired - Lifetime US3677489A (en) 1970-09-14 1970-09-14 Guide for unwinding thread from a package

Country Status (4)

Country Link
US (1) US3677489A (de)
CH (1) CH524534A (de)
DE (1) DE2134917A1 (de)
GB (1) GB1303026A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063697A (en) * 1975-09-24 1977-12-20 Asa S.A. Device for unthreading yarn from a bobbin
US4502644A (en) * 1980-08-05 1985-03-05 Dieter Schacht Pull-off aid for drawing threads from bobbins
EP0306812A1 (de) * 1987-09-07 1989-03-15 Johannes Lübbering Abwickelvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2550411C3 (de) * 1975-11-10 1978-04-27 Ab Iro, Ulricehamn (Schweden) Fadenliefervorrichtung für Textilmaschinen
DE3310438C2 (de) * 1983-03-23 1985-04-04 Palitex Project-Company Gmbh, 4150 Krefeld Vorrichtung zur Veränderung des Durchmessers einer Ablaufhilfe für den Überkopfabzug eines auf eine Aufwickelspule aufzuwickelnden Fadens von einer Vorlagespule

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041841B (de) * 1955-06-28 1958-10-23 Reiners Walter Dr Ing Verfahren und Vorrichtung zum Abspulen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041841B (de) * 1955-06-28 1958-10-23 Reiners Walter Dr Ing Verfahren und Vorrichtung zum Abspulen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063697A (en) * 1975-09-24 1977-12-20 Asa S.A. Device for unthreading yarn from a bobbin
US4502644A (en) * 1980-08-05 1985-03-05 Dieter Schacht Pull-off aid for drawing threads from bobbins
EP0306812A1 (de) * 1987-09-07 1989-03-15 Johannes Lübbering Abwickelvorrichtung

Also Published As

Publication number Publication date
GB1303026A (de) 1973-01-17
CH524534A (de) 1972-06-30
DE2134917A1 (de) 1972-03-23

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AS Assignment

Owner name: REED-CHATWOOD INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BARBER-COLMAN COMPANY;REEL/FRAME:004346/0404

Effective date: 19840822

AS Assignment

Owner name: CONTINENTAL ILLINOIS NATIONAL BANK AND TRUST COMPA

Free format text: SECURITY INTEREST;ASSIGNOR:REED CHATWOOD, INC., A DE. CORP.;REEL/FRAME:004716/0037

Effective date: 19861027