US2958995A - Thread tensioning devices for multiple twisters - Google Patents

Thread tensioning devices for multiple twisters Download PDF

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Publication number
US2958995A
US2958995A US545082A US54508255A US2958995A US 2958995 A US2958995 A US 2958995A US 545082 A US545082 A US 545082A US 54508255 A US54508255 A US 54508255A US 2958995 A US2958995 A US 2958995A
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US
United States
Prior art keywords
thread
cap
elements
disc
calotte
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
US545082A
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English (en)
Inventor
Gollos Wolfgang
Zander Werner
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.)
Glanzstoff AG
Vereinigte Glanzstoff Fabriken AG
Original Assignee
Glanzstoff AG
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 Glanzstoff AG filed Critical Glanzstoff AG
Application granted granted Critical
Publication of US2958995A publication Critical patent/US2958995A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist
    • D01H7/868—Yarn guiding means, e.g. guiding tubes

Definitions

  • This invention relates to spinning machinery, and more nited States Pilttiilt particularly to thread storing devices for double twist spindles, and the like.
  • These storage devices which usually are provided in the form of discs, serve the purpose of braking and tensioning the thread, prior to its passage onto the balloon, by friction of varying degrees arising between the thread and the disc.
  • Dependent on its tension the thread winds itself on the storage disc at larger or smaller looping angles, and the storage disc, true to its purpose of tension regulation, stores or yields thread correspondingly.
  • the invention contemplates providing a storage disc comprising the usual cylindrical, ring shaped disc member the periphery of which is provided with two rows, arranged in staggered relation to one another, of hemispherical cap or calotte elements between which the thread is passed and stored along an undulated path.
  • the cylindrical, ring-shaped disc members provided with hemispherical cap elements do not include regular grooves wherein to guide the thread, and because of the oblique withdrawal of the thread on its way to the balloon, the rotary portion of the bell-shaped thread guide must extend downwardly to about half the thickness of the cylindrical thread storage disc to insure a truly tangential withdrawal of the thread in the immediate proximity of the disc.
  • the hemispherical cap or calotte'elements instead of being provided on the cylindrical, ring-shaped disc member, may be arranged on the. circumference of the support member which in the embodiment discussedso far, mounts the ring-shaped disc member.
  • the hemispherical cap or calotte elements may be replaced by ellipsoidal, para boloidal, pyramidical or conical shapes.
  • staggered rows of cap or calotte elements while in close proximity to one another, nevertheless must leave suincient room for permitting the thread to pass therebetween without getting caught.
  • the increase in sliding friction per 'looping angle between thread and ring-shaped disc member is determined by the dispositoin of the cap or calotte elements relative to one another, and the "con-i sequent free, unhampered contact of the thread with every cap or calotte element, at a more or less inclined tangent.
  • the thread can slide across the same, choos-- ing a path which dependent on the strength of the thread and the friction encountered, passes a more or less extended portion of the surface of every cap or calotte element.
  • Figs. 6-10 show details of alternative forms of the cap 7 or calotte elements.
  • 1 is the revolving spindle
  • 2 is the thread outlet
  • 3 the center of the spindle.
  • the spindle mounts the supporting portion 4 of the storage disc, which in turn supports the cylindrical ring 5, and the lower, revolving part 6 of the cap or bell 7 which is stationary.
  • the numerals 8 and 9 are the rows of cap or calotte elements arranged in staggered relationship on the ring 5 which guide the thread along an undulated path from which it is transferred to the flange 10 of the revolving cap 6 which extends downwardly to about the middle plane of the ring 5.
  • caps or calotte elements are not squeezed together so tight as to meet in wedge-like fashion but are aanaae sufiiciently spaced from one another as to present to the thread an adequate basis 11 whereby the thread or the capillary filaments thereof are prevented from getting caught.
  • ellipsoidal Figs. 6 and 7
  • pyramidical Fig. 9
  • conical cap elements Fig. 10'
  • the thread to be twisted follows the following path: it passes from the delivery bobbin (not shown) through its hollow shaft to the spindle center 3 and, after deflection, through the outlet 2, through a slit 12 in the disc support portion 4 and the radial opening 13 (Fig. 2) in the ring to the two rows 8 and 9 of cap or calotte elements mounted on the ring 5, which guide it along an undulated path at looping angles varying with the degree of tension on the thread. It then passes tangentially, but still in a plane normal to the spindle axis, onto the flange on the revolving part 6 of the cap 7.
  • the latter may be provided with a feeding slot 14 extending from the bottom edge of ring 5 to the opening 13.
  • the opening 13 as well as the mouth of the spindle center 3, preferably are lined with thread guide rings (not shown) of wear resisting material.
  • the thread in being guided by the storage disc, lies freely on the hemispherical cap elements.
  • the increase in sliding friction is obtained by means of the freely adjustable, sloping path of the thread on the surfaces of the cap or calotte elements. If, for example, the thread 15 (Fig. 3) passes over the surface of a cap element in a steep tangent, the sliding friction will be materially greater than if it is guided only at a flat tangent 16 (Fig. 4).
  • This variation in the position of a thread of a certain denier number is brought about by a corresponding variation of the relative position of the two rows of cap elements. For example, if the cap elements 8 extend deeply into the interstices between the cap elements 9, the thread will be guided only in the flat tangent 16.
  • therad follows a steeper tangential path. If the cap elements 8 enter these interstices less deeply, the therad follows a steeper tangential path. If the cap elements have ellipsoidal or paraboloidal shapes, the same rules apply. With conical or pyramidical cap elements the tangential paths of the thread are predetermined.
  • the relative disposition of the cap elements determines the characteristics of every storage disc. By placing one storage disc by another with different characteristics the sliding-friction effect can be varied according to requirements.
  • the thread is always withdrawn from the storage disc tangentially and in a plane normal to the spindle axis, whereby any non-uniform tensioning of the thread is efiectively avoided.
  • a double twist spindle comprising in combination, a bell-shaped thread guide member including an upper, stationary portion and a lower, rotary portion, a thread storage and tension control disc-shaped member arranged below said thread guide member, and adjacent rows of cap elements disposed in staggered relation to one another, arranged to radially project from said disc-shaped member, said lower, rotary portion of the bell-shaped thread guide member including an annular flange portion extending downwardly to substantially half the thickness of said disc-shaped member whereby the thread is guided at increased sliding friction along said cap elements to be transferred tangentially and in the plane of the disc, to said thread guide member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US545082A 1954-11-08 1955-11-04 Thread tensioning devices for multiple twisters Expired - Lifetime US2958995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE333454X 1954-11-08

Publications (1)

Publication Number Publication Date
US2958995A true US2958995A (en) 1960-11-08

Family

ID=6209920

Family Applications (1)

Application Number Title Priority Date Filing Date
US545082A Expired - Lifetime US2958995A (en) 1954-11-08 1955-11-04 Thread tensioning devices for multiple twisters

Country Status (4)

Country Link
US (1) US2958995A (enrdf_load_stackoverflow)
BE (1) BE540371A (enrdf_load_stackoverflow)
CH (1) CH333454A (enrdf_load_stackoverflow)
GB (1) GB792821A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445998A (en) * 1966-09-02 1969-05-27 Murata Machinery Ltd Tensioning method and device of two-for-one yarn twisters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE513086A (enrdf_load_stackoverflow) * 1951-07-28
DE573275C (de) * 1933-03-29 Barmer Maschinenfabrik Akt Ges Doppeldrahtzwirnspindel
US2597015A (en) * 1950-09-13 1952-05-20 Deering Milliken Res Trust Spindle
US2638732A (en) * 1949-06-09 1953-05-19 Sabaton Louis Double twist throwing spindle device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE573275C (de) * 1933-03-29 Barmer Maschinenfabrik Akt Ges Doppeldrahtzwirnspindel
US2638732A (en) * 1949-06-09 1953-05-19 Sabaton Louis Double twist throwing spindle device
US2597015A (en) * 1950-09-13 1952-05-20 Deering Milliken Res Trust Spindle
BE513086A (enrdf_load_stackoverflow) * 1951-07-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445998A (en) * 1966-09-02 1969-05-27 Murata Machinery Ltd Tensioning method and device of two-for-one yarn twisters

Also Published As

Publication number Publication date
CH333454A (de) 1958-10-31
GB792821A (en) 1958-04-02
BE540371A (enrdf_load_stackoverflow)

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