US3451207A - Device for handling an end of yarn or roving - Google Patents

Device for handling an end of yarn or roving Download PDF

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Publication number
US3451207A
US3451207A US581999A US3451207DA US3451207A US 3451207 A US3451207 A US 3451207A US 581999 A US581999 A US 581999A US 3451207D A US3451207D A US 3451207DA US 3451207 A US3451207 A US 3451207A
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United States
Prior art keywords
tube
yarn
air
spinning
roving
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Expired - Lifetime
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US581999A
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English (en)
Inventor
John Beverley Sharp
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.)
Wool Industries Research Association
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Wool Industries Research Association
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Publication date
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing

Definitions

  • This invention concerns a device for gathering a free end of yarn or roving and delivering it to a predetermined position while simultaneously introducing twist thereinto, particularly, though by no means exclusively, suitable for practise on cap spinning frames as a means of ensuring automatic continuation of spinning after a yarn break and of automatic joining of the yarn end to the spinning bobbin after a change of bobbin or of roving.
  • an apparatus for gathering a free end of yarn or roving and delivering it to a predetermined position while simultaneously introducing twist thereinto comprises of providing a current of air which follows a spiral path, arranging for the low pressure end of said current of air to be situated in the region whence the end is to be gathered, whereby the end is sucked into the current and conveyed thereby, and arranging for the high pressure end of the current to be directed so as to deliver the end to said predetermined position.
  • Also according to the invention is a device comprising an open-ended tube or duct of circular cross-section, means for injecting air into the tube adjacent one end thereof in a direction having a substantial component in the direction of the axis of the tube and at a position olfset from any diametral plane of the tube, whereby an air current is established through the tube which follows a spiral path at least on the downstream side of said air injecting means.
  • FIG. 1 shows a top plan view of the device
  • FIG. 2 shows a front elevation of the device
  • FIG. 3 shows a side elevation of the device
  • FIG. 4 shows a bottom plan view of the device
  • FIG. 5 shows an axial section of the device
  • FIG. 6 shows a side elevation of a cap spinning frame incorporating the device of FIGS. 1-5.
  • the device generally indicated by the reference numeral 10 essentially comprises a length of tube 11 of circular cross-section.
  • the upper end of the tube 11 is of tapered form as-indicated at 11a,
  • An air injection tube 12 is provided and communicates with the interior of the tube 11 at a position slightly below the upper end thereof.
  • the tube 12 is inclined to the axis of the tube 11 but nevertheless has a substantial directional component in the direction of the axis of the tube 11.
  • the tube 12 communicates with the tube 11 at a position offset from any diametral plane of the tube 11, as clearly seen from FIGS. 1-5.
  • the cross-section of the tube 12 is restricted at the approach to its junction with the tube 11, so that air injected into the tube 11 enters the latter through a relatively narrow slot.
  • the sleeve 13 extends slightly beyond the tapered end of the tube 11 as indicated at 13a, and has an aperture therein which is in register with the slot of the air injection tube 12.
  • the cap spinning frame comprises back rollers 20, front rollers 21 and a bobbin 22 with cap 23, in known manner, the yarn guide normally located between the front rollers 21 and cap 23 being omitted.
  • the rollers 20 and 21 are so disposed that the angle A between the roving R and the horizontal is that generally used in high angle cap spinning.
  • the device 10 is disposed between the front rollers 21 and cap 23 in the manner shown on the drawing, with its tapered upper end 11a disposed between the rollers 21 adjacent the exit from the nip therebetween.
  • the yarn being spun from the roving R passes from the front rollers 21, through the tube 11, which serves as a guide, and onto the bobbin 22.
  • the tube 11 is arranged with one end at the nip as described above, and the other over the cap 23. Thus air issuing from the lower end of the tube 11 blows almost vertically downwards onto the cap over the bobbin.
  • the air for the inlet tube 12 may be tapped off a main feed pipe running along the frame behind a series of the devices 10 for all the spinning units on the frame.
  • the device 10 acts in the following manner. Firstly, it collects the yarn end by suction as it emerges from the front spinning rollers. This avoids lapping of the yarn round the front rollers, spin ners doubles or the like. The device 10 then carries this collected yarn end downwards with a motion that tends to gyrate it round the cap. The free end of the yarn is then caught by the part of the bobbin exposed below the cap. Simultaneously with the carrying of the yarn downwards, the device 10 inserts twist into the yarn before it reaches the bobbin. The yarn is then strong enough to withstand the impulses of tension when it is taken up by the bobbin.
  • Twist is inserted in the yarn, when one end of the yarn is free, by the spiralling rotation of the air down the tube 11.
  • the flow of air down the tube causes the yarn to be blown downwards'over the cap, and the rotation of the air stream tends to wrap the yarn round the bobbin.
  • the air suction and air rotation in the tube could be produced by other methods.
  • a separate air feed might be used for each requirement. Again these two actions might be produced by placing an inner cylinder inside the tube 11 over a part of its length and by injecting the air stream into the annulus so formed.
  • the amount of twist inserted and rotation imparted and the strength of suction at the tube entrance can be adjusted by varying the tube design, the air input, and the angle of the inlet.
  • the PTFE sleeve 13 reduces friction between the roving or yarn and the inside of the tube 11 and prevents the accumulation of grease in the tube as would otherwise occur when spinning certain yarns such as wool for ex.- ample.
  • the tube 11 need not be straight, but could be somewhat curved enabling its use on a cap spinning frame with a lower angle A.
  • the device which will normally be made of metal, need not have a lining sleeve, or it could be internally coated directly with a PTFE material.
  • the device- may be formed from materials other than metal such as a nylon material, for example.
  • a PTFE lining sleeve When a PTFE lining sleeve is provided in a metal tube such sleeve may be terminated behind the extremity of the downstream end of the tube, and the tube grounded, to prevent the build-up of static.
  • the device could obviously be used on a centrifugal pot spinner to ensure an automatic continuation of spinning following a break.
  • the device might also be used advantageously on ring spinning frames and fiyer frames, though in such cases further auxiliary equipment would be necessary to hold the yarn end connected with the bobbin immediately after occurrence of a break to enable the two ends to be pieced together.
  • the device might be arranged to convey the end from the front rollers and wrap it round the held end to effect the piecing up automatically.
  • This device could also be introduced between the delivery and the take up point of a yarn produced by a system of break spinning.”
  • a device for gathering a free end of yarn or roving and delivering it to a predetermined position while simultaneously introducing twist into it comprising a tube of circular cross-section open at both ends, means for injecting an air jet into said tube through an aperture in its wall adjacent to one of its ends, the direction of said air jet forming an angle with respect to the longitudinal axis of said tube but said air jet having a component parallel to the tube axis, and said air jet being parallel to but offset from a diametral plane of said tube, whereby an air current is established through the tube which follows a spiral path at least on the downstream side of said air injecting means, and the upstream end of said tube adjacent to said air injecting means is tapered to provide an elongated generally rectangular entry.
  • said air injecting means comprises an air injection tube communicating with said open-ended tube via said aperture, said injection tube at least at the position of communication being inclined to the axis of said open-ended tube but having a component in the direction of said axis and being olfset from and parallel to a diametral plane of said openended tube.
  • a device including a lining sleeve of PTFE material extending within said tube over at least a part of its length, said sleeve having an opening in its wall in registry with said aperture.
  • a device according to claim 3 including a coating of PTFE material directly on the inner surface of said tube.
  • a device wherein the direction of said injection tube at the position of communication may be resolved into tangential and axial components only.
  • Cap spinning apparatus having front rollers and a spinning bobbin, characterized by the provision of a device according to claim 1 disposed to collect an end of yarn or roving from the front rollers and deliver same to the spinning bobbin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US581999A 1965-10-27 1966-09-26 Device for handling an end of yarn or roving Expired - Lifetime US3451207A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB45415/65A GB1141509A (en) 1965-10-27 1965-10-27 A method and device for handling an end of yarn or roving
GB439066 1966-02-01

Publications (1)

Publication Number Publication Date
US3451207A true US3451207A (en) 1969-06-24

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ID=26239088

Family Applications (1)

Application Number Title Priority Date Filing Date
US581999A Expired - Lifetime US3451207A (en) 1965-10-27 1966-09-26 Device for handling an end of yarn or roving

Country Status (5)

Country Link
US (1) US3451207A (enrdf_load_stackoverflow)
BE (1) BE688919A (enrdf_load_stackoverflow)
CH (1) CH443084A (enrdf_load_stackoverflow)
FR (1) FR1506447A (enrdf_load_stackoverflow)
GB (1) GB1141509A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096687A (en) * 1977-05-04 1978-06-27 Ppg Industries, Inc. Method for producing slubbed yarns

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD203339B1 (de) * 1981-12-23 1987-02-25 Textilmaschinenbau Grossenhain Vorrichtung zum einfuehren eines faserbandes oder fadens
BE1007310A3 (fr) * 1993-07-07 1995-05-16 Houget Duesberg Bosson Procede et dispositif pour rattacher deux fils dans un continu a filer.

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1838682A (en) * 1931-07-03 1931-12-29 Ingham Mark Cap frame
US2206834A (en) * 1937-10-26 1940-07-02 Ind Rayon Corp Waste collection apparatus
US2783609A (en) * 1951-12-14 1957-03-05 Du Pont Bulky continuous filament yarn
US2831313A (en) * 1955-01-10 1958-04-22 Du Pont Ring traveler
US3022566A (en) * 1958-02-11 1962-02-27 Du Pont False twisted yarn beam
US3079746A (en) * 1961-10-23 1963-03-05 Du Pont Fasciated yarn, process and apparatus for producing the same
US3094374A (en) * 1961-07-11 1963-06-18 Du Pont Dry spinning process for preparing coalesced spandex filaments
US3116588A (en) * 1958-08-01 1964-01-07 Du Pont Process for preparing stable alternating twist yarn
US3217482A (en) * 1963-08-30 1965-11-16 Monsanto Co Apparatus for texturizing yarn
US3286896A (en) * 1964-07-14 1966-11-22 Du Pont Method and apparatus for forwarding filaments by jet means
US3303639A (en) * 1965-06-23 1967-02-14 Monsanto Co Pneumtic false twister
US3309855A (en) * 1961-06-09 1967-03-21 Celanese Corp Process and apparatus for producing bulked plied yarn
US3328946A (en) * 1966-01-03 1967-07-04 Alwo Altenburger Wollspinnerei Apparatus for making corkscrew-type yarns
US3334477A (en) * 1965-10-22 1967-08-08 Cormier Hosiery Mills Inc Apparatus and method for connecting a yarn to an existing yarn
US3340684A (en) * 1965-12-07 1967-09-12 Uniroyal Inc Yarn texturing apparatus and fluid diffuser therefor

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1838682A (en) * 1931-07-03 1931-12-29 Ingham Mark Cap frame
US2206834A (en) * 1937-10-26 1940-07-02 Ind Rayon Corp Waste collection apparatus
US2783609A (en) * 1951-12-14 1957-03-05 Du Pont Bulky continuous filament yarn
US2831313A (en) * 1955-01-10 1958-04-22 Du Pont Ring traveler
US3022566A (en) * 1958-02-11 1962-02-27 Du Pont False twisted yarn beam
US3116588A (en) * 1958-08-01 1964-01-07 Du Pont Process for preparing stable alternating twist yarn
US3309855A (en) * 1961-06-09 1967-03-21 Celanese Corp Process and apparatus for producing bulked plied yarn
US3094374A (en) * 1961-07-11 1963-06-18 Du Pont Dry spinning process for preparing coalesced spandex filaments
US3079746A (en) * 1961-10-23 1963-03-05 Du Pont Fasciated yarn, process and apparatus for producing the same
US3217482A (en) * 1963-08-30 1965-11-16 Monsanto Co Apparatus for texturizing yarn
US3286896A (en) * 1964-07-14 1966-11-22 Du Pont Method and apparatus for forwarding filaments by jet means
US3303639A (en) * 1965-06-23 1967-02-14 Monsanto Co Pneumtic false twister
US3334477A (en) * 1965-10-22 1967-08-08 Cormier Hosiery Mills Inc Apparatus and method for connecting a yarn to an existing yarn
US3340684A (en) * 1965-12-07 1967-09-12 Uniroyal Inc Yarn texturing apparatus and fluid diffuser therefor
US3328946A (en) * 1966-01-03 1967-07-04 Alwo Altenburger Wollspinnerei Apparatus for making corkscrew-type yarns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096687A (en) * 1977-05-04 1978-06-27 Ppg Industries, Inc. Method for producing slubbed yarns

Also Published As

Publication number Publication date
CH443084A (de) 1967-08-31
GB1141509A (en) 1969-01-29
FR1506447A (fr) 1967-12-22
BE688919A (enrdf_load_stackoverflow) 1967-03-31

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