US3357168A - Spinning chamber air outlet - Google Patents

Spinning chamber air outlet Download PDF

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Publication number
US3357168A
US3357168A US599941A US59994166A US3357168A US 3357168 A US3357168 A US 3357168A US 599941 A US599941 A US 599941A US 59994166 A US59994166 A US 59994166A US 3357168 A US3357168 A US 3357168A
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Prior art keywords
fibers
escape
spinning chamber
openings
escape openings
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US599941A
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Zlevor Vratislav
Zavadsky Karel
Kubovy Miloslav
Dobrouc Dolni
Stary Josef
Jirasek Erik
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Vyzkumny Ustav Bavlnarsky AS
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Vyzkumny Ustav Bavlnarsky AS
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • ABSTRACT QF THE DISCLQSURE rl ⁇ he air escape openings of a rotary spinning chamber are spaced to prevent clogging by fibers.
  • the present invention relates to rotary spinning chambers of the type in which textile fibers are supplied to a circular collecting surface and are spun on the same into a twisted yarn which is delivered through a central stationary delivery channel to a pair of transporting rollers.
  • the shorter fibers are frequently simultaneously caught at both ends by two escape openings so that they are held on the intermediate wall portion without being able to escape together with the air passing through the escape openings.
  • fibers are accumulated on the wall portion where the escape openings are provided, and gradually clog the escape openings, preventing the escape of air and causing reduced air flow into and out of the spinning chamber, resulting finally in the spinning of a yarn of poor quality.
  • Another object of the invention is to dispose the air escape openings of a rotary spinning chamber in such a manner that fibers cannot be caught at both ends in adjacent escape openings.
  • the present invention relates to a rotary spinning chamber having an inlet for fibers and air, and a wall formed with a plurality of escape openings for air and fibers driven outward by the centrifugal force.
  • the escape openings are spaced from each other such a predetermined distance that one end of a fiber blown toward the wall cannot enter an escape opening when the other end of the fiber has entered another escape opening. In this manner, clogging of the escape openings by fibers having the ends thereof located in two escape openings is prevented.
  • the distance between adjacent escape openings is greater than one-third of the standard length of the fibers.
  • the distance between two adjacent escape openings is selected so that when one end of any one of the shorter fibers enters an escape opening, the other end of the iiber is located on the wall between the respective escape opening and the next adjacent escape ICC opening, and is safely blown out of the escape opening in which its end is located.
  • FIG. 1 is a fragmentary schematic axial sectional view illustrating an embodiment of a spinning chamber provided with the improvement of the invention.
  • FIG. 2 is a fragmentary plan view of the embodiment, partially shown in cross section.
  • a spinning chamber 1 is carried by drive shaft 2 and rotated about its axis.
  • the spinning chamber has a circular collecting surface 6 formed by two intersecting frusto-conical surfaces and located in the region of the greatest diameter of the spinning chamber.
  • a stationary body 12 has a portion 13 projecting into the spinning chamber, and is formed with an inlet channel 4 through which fibers 5 are supplied into the interior of the spinning chamber to be spun at the collecting surface 6 into a yarn 7 which is transported by a pair of rollers 9 through a delivery channel 8 disposed coinciding with the axis of rotation of spinning chamber 1.
  • Winding means not shown, wind up the yarn 7 to form a package 10.
  • the spinning. chamber has circumferentially spaced outlet channels 3 which open on the inner surface of the spinning chamber in circumferentially spaced air escape openings 11 located in a plane perpendicular to the axis of rotation of the spinning chamber.
  • the centrifugal force moves air through the escape openings and outlet channels, and sucks air and fibers 5 through the inlet channel 4.
  • the fibers are spun on the collecting surface 6 into the yarn 7, a portion of which revolves with the spinning chamber, while another portion passing through the delivery channel 8 to the transporting rollers 9, is twisted.
  • the fibers 5 are obtained by a known and conventional combing roller which combs the fibers out of a sliver. Most of the Ifibers are of a standard length, while other fibers are shorter. Those fibers which are not spun into the yarn on collecting surface 6 should escape through the escape openings 11 and outlet channels 3 in order to prevent clogging of the spinning chamber.
  • the distance a between adjacent escape openings 11 is selected so that one end of a short fiber blown toward a wall portion 11a, cannot enter an escape opening when the other end of the fiber has already entered another escape opening.
  • the distance a between two adjacent escape openings 11 is greater than one-third of the standard length of the fibers S supplied into the spinning chamber. Fibers of shorter length than distance a cannot be caught simultaneously in two adjacent escape openings 11 so that the main reason for the clogging of the escape openings is eliminated, and disturbances of the spinning operation due to clogging of the outlet channels is prevented. Fibers having a greater length than one-third of the standard length of most supplied fibers, have sufficient mass to be thrown onto collecting surface 6 by the centrifugal force, while shorter fibers have a smaller mass and tend to fioat in the spinning chamber toward openings 11.
  • a short fiber 4 which was not held on the collecting surface 6, or did not reach the same, can enter only with one end into an escape opening 11, and is immediately and quickly blown by the stream of air passing through the respective escape opening an outlet channel out of the spinning chamber.
  • the distance a between adjacent circumferentially spaced escape openings 11a will be selected in accordance with the length of the fibers produced by the particular combining device, and will be selected so that the greatest possible number of short fibers, which are not spun into a yarn, cannot enter with both ends into adjacent escape openings.
  • a rotary spinning chamber having an inlet for fibers and air, and a wall formed with a plurality of escape openings for air and fibers driven outward by the centrifugal force, wherein said escape openings are spaced from each other such a predetermined distance that one end of a fiber blown toward said wall cannot enter an escape opening when the other end of the fiber has entered another escape opening whereby clogging of said escape openings by fibers having the ends thereof located in two escape openings is prevented.
  • Rotary spinning chamber as dened in claim 1 coinprising means for supplying fibers having a predetermined standard length into said spinning chamber; and wherein said predetermined distance between adjacent escape openings is greater than one third of said standard length of said fibers.
  • Rotary spinning chamber as defined in claim 1 comprising means for supplying standard fibers and shorter fibers into said spinning chamber; and wherein said predetermined distance is selected so that one end of any one of said shorter fibers whose other end enters one of said escape openings is located on said wall between said one escape opening and the escape opening adjacent the same so that the respective shorter liber is blown out of said escape opening.
  • Rotary spinning chamber as defined in claim 1 wherein said wall has a frusto-conical inner surface in which said escape openings are located circumferentially spaced from each other said predetermined distance.
  • Rotary spinning chamber as defined in claim 4 wherein said wall has outlet channels extending in radial direction with respect to the axis of rotation of said rotary spinning chamber, and terminating at said inner rusto-conical surfaces in said escape openings.
  • Rotary spinning chamber as defined in claim 5 wherein said escape openings and said outlet channels have a circular cross section.

Description

Dec- 12, 1967 v. ZLEVOR ETAL 3,357,168
SPINNING CHAMBER AIR OUTLET Filed Dec.
lla
United States Patent O 3,357,168 SPINNING CHAMBER AH?. DU'ILET Vratislav Zlevor, Usui nad Orlici, Karel Zavadsky, Hnatnice, Miioslav Kuhovy, Dolni Dobrouc, and Josef Stai-y and Erik .lirasek, Usti nad Orlici, Czechoslovakia, assigner-s to Vyzkumny Ustav Bavlnarsky, Usti nad Orlici, Czechoslovakia Filed Dec. 7, 1966, Ser. No. 599,941 Claims priority, application Czechoslovakia, Dec. 7, 1965, 7,333/ 65 6 Claims. (Cl. 57-58.S9)
ABSTRACT QF THE DISCLQSURE rl`he air escape openings of a rotary spinning chamber are spaced to prevent clogging by fibers.
Background of the invention The present invention relates to rotary spinning chambers of the type in which textile fibers are supplied to a circular collecting surface and are spun on the same into a twisted yarn which is delivered through a central stationary delivery channel to a pair of transporting rollers.
Due to the rotation of the spinning chamber, air is discharged through the escape openings and sucked into the spinning chamber together with fibers. Some of the fibers which are not spun into a yarn, escape through the escape openings, particularly fibers whose length is shorter than the standard or average length of the fibers.
In constructions according to the prior art, the shorter fibers are frequently simultaneously caught at both ends by two escape openings so that they are held on the intermediate wall portion without being able to escape together with the air passing through the escape openings. In the course of the spinning operation, fibers are accumulated on the wall portion where the escape openings are provided, and gradually clog the escape openings, preventing the escape of air and causing reduced air flow into and out of the spinning chamber, resulting finally in the spinning of a yarn of poor quality.
Summary of the invention It is an object of the invention to overcome these disadvantages of spinning chambers according to the prior art, and to prevent the clogging of air escape openings by fibers.
Another object of the invention is to dispose the air escape openings of a rotary spinning chamber in such a manner that fibers cannot be caught at both ends in adjacent escape openings.
With these objects in View, the present invention relates to a rotary spinning chamber having an inlet for fibers and air, and a wall formed with a plurality of escape openings for air and fibers driven outward by the centrifugal force. In accordance with the invention, the escape openings are spaced from each other such a predetermined distance that one end of a fiber blown toward the wall cannot enter an escape opening when the other end of the fiber has entered another escape opening. In this manner, clogging of the escape openings by fibers having the ends thereof located in two escape openings is prevented.
In the preferred embodiment of the invention, the distance between adjacent escape openings is greater than one-third of the standard length of the fibers.
Since also fibers shorter than standard fibers enter the spinning chamber, the distance between two adjacent escape openings is selected so that when one end of any one of the shorter fibers enters an escape opening, the other end of the iiber is located on the wall between the respective escape opening and the next adjacent escape ICC opening, and is safely blown out of the escape opening in which its end is located.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
Brief description of the drawing FIG. 1 is a fragmentary schematic axial sectional view illustrating an embodiment of a spinning chamber provided with the improvement of the invention; and
FIG. 2 is a fragmentary plan view of the embodiment, partially shown in cross section.
Description of the preferred embodiment Referring now to the drawing, a spinning chamber 1 is carried by drive shaft 2 and rotated about its axis. The spinning chamber has a circular collecting surface 6 formed by two intersecting frusto-conical surfaces and located in the region of the greatest diameter of the spinning chamber. A stationary body 12 has a portion 13 projecting into the spinning chamber, and is formed with an inlet channel 4 through which fibers 5 are supplied into the interior of the spinning chamber to be spun at the collecting surface 6 into a yarn 7 which is transported by a pair of rollers 9 through a delivery channel 8 disposed coinciding with the axis of rotation of spinning chamber 1. Winding means, not shown, wind up the yarn 7 to form a package 10.
The spinning. chamber has circumferentially spaced outlet channels 3 which open on the inner surface of the spinning chamber in circumferentially spaced air escape openings 11 located in a plane perpendicular to the axis of rotation of the spinning chamber.
During rotation of the spinning chamber, the centrifugal force moves air through the escape openings and outlet channels, and sucks air and fibers 5 through the inlet channel 4. The fibers are spun on the collecting surface 6 into the yarn 7, a portion of which revolves with the spinning chamber, while another portion passing through the delivery channel 8 to the transporting rollers 9, is twisted.
The fibers 5 are obtained by a known and conventional combing roller which combs the fibers out of a sliver. Most of the Ifibers are of a standard length, while other fibers are shorter. Those fibers which are not spun into the yarn on collecting surface 6 should escape through the escape openings 11 and outlet channels 3 in order to prevent clogging of the spinning chamber.
However, if the ends of a loose fiber simultaneously enter two adjacent escape openings, the respective fiber -is neither blown out of one or the other escape opening, but is pressed against the wall portion 11a between two adjacent escape openings 11. I-f a great number of fibers is thus accumulated on the inner Wall portions 11a around the circumference of the spinning chamber, the escape openings and outlet channels become clogged, and even fibers entering only with one end into an escape opening cannot be blown out, so that finally the air is prevented from properly escaping through the outlet channels 11 and the operation of the spinning chamber is impaired.
In accordance with the invention, the distance a between adjacent escape openings 11 is selected so that one end of a short fiber blown toward a wall portion 11a, cannot enter an escape opening when the other end of the fiber has already entered another escape opening. Particularly, it is preferred that the distance a between two adjacent escape openings 11 is greater than one-third of the standard length of the fibers S supplied into the spinning chamber. Fibers of shorter length than distance a cannot be caught simultaneously in two adjacent escape openings 11 so that the main reason for the clogging of the escape openings is eliminated, and disturbances of the spinning operation due to clogging of the outlet channels is prevented. Fibers having a greater length than one-third of the standard length of most supplied fibers, have sufficient mass to be thrown onto collecting surface 6 by the centrifugal force, while shorter fibers have a smaller mass and tend to fioat in the spinning chamber toward openings 11.
A short fiber 4 which was not held on the collecting surface 6, or did not reach the same, can enter only with one end into an escape opening 11, and is immediately and quickly blown by the stream of air passing through the respective escape opening an outlet channel out of the spinning chamber.
It is evident that the distance a between adjacent circumferentially spaced escape openings 11a will be selected in accordance with the length of the fibers produced by the particular combining device, and will be selected so that the greatest possible number of short fibers, which are not spun into a yarn, cannot enter with both ends into adjacent escape openings.
It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of rotary spinning chambers differing from the types described above.
While the invention has been illustrated and described as embodied in a spinning chamber having air escape openings spaced to prevent engagement of two adjacent escape openings by vthe ends of a fiber, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims:
1. A rotary spinning chamber having an inlet for fibers and air, and a wall formed with a plurality of escape openings for air and fibers driven outward by the centrifugal force, wherein said escape openings are spaced from each other such a predetermined distance that one end of a fiber blown toward said wall cannot enter an escape opening when the other end of the fiber has entered another escape opening whereby clogging of said escape openings by fibers having the ends thereof located in two escape openings is prevented.
2. Rotary spinning chamber as dened in claim 1 coinprising means for supplying fibers having a predetermined standard length into said spinning chamber; and wherein said predetermined distance between adjacent escape openings is greater than one third of said standard length of said fibers.
3. Rotary spinning chamber as defined in claim 1 comprising means for supplying standard fibers and shorter fibers into said spinning chamber; and wherein said predetermined distance is selected so that one end of any one of said shorter fibers whose other end enters one of said escape openings is located on said wall between said one escape opening and the escape opening adjacent the same so that the respective shorter liber is blown out of said escape opening.
4. Rotary spinning chamber as defined in claim 1 wherein said wall has a frusto-conical inner surface in which said escape openings are located circumferentially spaced from each other said predetermined distance.
A5. Rotary spinning chamber as defined in claim 4 wherein said wall has outlet channels extending in radial direction with respect to the axis of rotation of said rotary spinning chamber, and terminating at said inner rusto-conical surfaces in said escape openings.
6. Rotary spinning chamber as defined in claim 5 wherein said escape openings and said outlet channels have a circular cross section.
References Cited UNITED STATES PATENTS 3,121,306 2/1964 Cizek et al 57-58.89 3,163,976 1/1965 Juiliard 57--58.89 3,328,949 7/1967 Pavek et al. 57-88.89
JOHN PETRAKES, Primary Examiner.

Claims (1)

1. A ROTARY SPINNING CHAMBER HAVING AN INLET FOR FIBERS AND AIR, AND A WALL FORMED WITH A PLURALITY OF ESCAPE OPENINGS FOR AIR AND FIBERS DRIVEN OUTWARD BY THE CENTRIFUGAL FORCE, WHEREIN SAID ESCAPE OPENINGS ARE SPACED FROM EACH OTHER SUCH A PREDETERMINED DISTANCE THAT ONE END OF A FIBER BLOWN TOWARD SAID WALL CANNOT ENTER AN ESCAPE OPENING WHEN THE OTHER END OF THE FIBER HAS ENTERED ANOTHER ESCAPE OPENING WHEREBY CLOGGING OF SAID
US599941A 1965-12-07 1966-12-07 Spinning chamber air outlet Expired - Lifetime US3357168A (en)

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BE (1) BE690432A (en)
CH (1) CH453973A (en)
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GB (1) GB1074567A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3439487A (en) * 1967-03-09 1969-04-22 Schubert & Salzer Maschinen Spinning chamber rotor
US3481130A (en) * 1966-11-24 1969-12-02 Vyzk Uslav Bavlnarsky Apparatus for continuous ringless spinning of textile fibers in a rotating spinning chamber in which underpressure is maintained
US3511043A (en) * 1967-09-27 1970-05-12 Rieter Ag Maschf Open end spinning device
US3798886A (en) * 1970-12-16 1974-03-26 Elitex Z Textilnoho Strojirens Self-cleaning spinning arrangement for use with textile machines
US3908349A (en) * 1973-09-19 1975-09-30 Kaiwa Boseki Kabushiki Kaisha Fiber guiding plate for a rotary spinning chamber of an open end spinning machine
US3952493A (en) * 1974-02-20 1976-04-27 Igor Stepanovich Khomyakov Apparatus for ringless spinning of fibers
US3952494A (en) * 1973-10-24 1976-04-27 Vyzkumny Ustav Bavlnarsky Open-end spinning unit with a spinning rotor
JPS5126543B1 (en) * 1969-04-09 1976-08-06
US4241572A (en) * 1978-05-09 1980-12-30 Societe Alsacienne De Constructions Mechaniques De Mulhouse Rotors of freed-fiber spinning devices
US4489547A (en) * 1981-07-28 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in open end spinning frame

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030730B1 (en) * 1967-07-12 1975-10-03
CS236080B1 (en) * 1983-05-20 1985-05-15 Milan Chrtek Spinning rotor for spindleless spinning machine
AT510442B1 (en) 2011-08-24 2012-04-15 Wilhelm Bubits PISTOL WITH LOCK THROUGH LOCKING BODY

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121306A (en) * 1961-11-09 1964-02-18 Vyzk Ustav Barlnarsky Method and apparatus for the continuous manufacture of yarn from textile staple fibers
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3328949A (en) * 1964-11-25 1967-07-04 Elitex Zavody Textilniho Device for continuous centrifugal spinning

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121306A (en) * 1961-11-09 1964-02-18 Vyzk Ustav Barlnarsky Method and apparatus for the continuous manufacture of yarn from textile staple fibers
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3328949A (en) * 1964-11-25 1967-07-04 Elitex Zavody Textilniho Device for continuous centrifugal spinning

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481130A (en) * 1966-11-24 1969-12-02 Vyzk Uslav Bavlnarsky Apparatus for continuous ringless spinning of textile fibers in a rotating spinning chamber in which underpressure is maintained
US3439487A (en) * 1967-03-09 1969-04-22 Schubert & Salzer Maschinen Spinning chamber rotor
US3511043A (en) * 1967-09-27 1970-05-12 Rieter Ag Maschf Open end spinning device
JPS5126543B1 (en) * 1969-04-09 1976-08-06
US3798886A (en) * 1970-12-16 1974-03-26 Elitex Z Textilnoho Strojirens Self-cleaning spinning arrangement for use with textile machines
US3908349A (en) * 1973-09-19 1975-09-30 Kaiwa Boseki Kabushiki Kaisha Fiber guiding plate for a rotary spinning chamber of an open end spinning machine
US3952494A (en) * 1973-10-24 1976-04-27 Vyzkumny Ustav Bavlnarsky Open-end spinning unit with a spinning rotor
US3952493A (en) * 1974-02-20 1976-04-27 Igor Stepanovich Khomyakov Apparatus for ringless spinning of fibers
US4241572A (en) * 1978-05-09 1980-12-30 Societe Alsacienne De Constructions Mechaniques De Mulhouse Rotors of freed-fiber spinning devices
US4489547A (en) * 1981-07-28 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in open end spinning frame

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GB1074567A (en) 1967-07-05
AT269695B (en) 1969-03-25
CH453973A (en) 1968-03-31
DE1535012A1 (en) 1970-12-17
DE1535012C3 (en) 1980-04-03
DE1535012B2 (en) 1973-08-16
BE690432A (en) 1967-05-02

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