US2787883A - High speed spinning frames - Google Patents

High speed spinning frames Download PDF

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Publication number
US2787883A
US2787883A US364418A US36441853A US2787883A US 2787883 A US2787883 A US 2787883A US 364418 A US364418 A US 364418A US 36441853 A US36441853 A US 36441853A US 2787883 A US2787883 A US 2787883A
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Prior art keywords
spinning
sliver
thread
speed
attenuation
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Expired - Lifetime
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US364418A
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English (en)
Inventor
Gardella Adriano
Gardella Costantino
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • This invention has for its object a high-speed spinning frame for long and coarse vegetal bastand leaf-fibres, such as hemp, linen, jute, sisal and the like.
  • spinning machines for long vegetable fibres are known in which the draft unit is combined with a flyer-spinning device and is provided with means, such as small straps, guide or holding-rollers, for the sliver control within the attenuation field.
  • the sliver guide and control devices during the attenuation permit of obtaining high drawing ratios and a substantially high forwarding and feeding speed of the attenuation sliver (up to 100 metres per minute) the spinning is limited by the highest revolution speed that may be reached without damage to the fiyer legs, this speed being of the order of about 4,000 R. P. M. Therefore the possibilities that are offered by the controlled drawing are not completely utilised and the yarn production cannot surpass the highest limit of about 30 metres per minute, whereby the drawing ratios are usually maintained below 1:15
  • centrifugal can spinning has been almost exclusively adopted for spinning filaments produced on artificial filament spinning machines or for spinning ther very smooth fibres, such as cotton.
  • Attempts to employ centrifugal can spinning units for spinning of coarse fibres, such as hemp, jute, flax or the like, have not given good results, and thus this very eflicient spinning system has been practically adopted only for continuous filaments, such as artificial fibres.
  • the invention aims to eliminate the above outlined drawbacks and to provide a spinning frame for the said vegetable fibres which is adapted to produce, even and particularly by a dry spinning, regular threads of any count at very high production speed and while permitting high draft ratios.
  • the spinning frame according to the invention is characterised in a first place by the combination with a centrifugal can spinning, of a draft unit with a ratio of at least 1:30 provided with means for the sliver control during the drawing and also of a friction device arranged between the draft unit and the collecting can and adapted for controlling the thread during its twisting.
  • the sliver-controlling means in the draft field may comprise guiding and holding devices of any suitable kind which may be constituted, as usual, for example by a set of rollers and one or more narrow endless belts or tapes.
  • the device for controlling the thread beyond the draft field and during its twisting is constituted by dull-edged or smooth friction surfaces fastened to the spinning frame or preferably carried at least in part by the usual tubular reciprocating thread guide and shaped and/or arranged in such a manner as to constantly slip against the thread being formed by acting thereon from a plurality of different sides so as to exercise a smoothing action on the surface of the thread being formed, while compelling same to follow a slightly sinuous path.
  • the combination according to the invention of a controlled high-attenuation draft unit combined with a centrifugal can-spinning unit permits of fully utilizing the high speeds and efficiency of both units, thus obtaining high attenuations, usually substantially above 1:30, high delivery speeds for the attenuated sliver, between 30 and metres per minute, and consequently high spinning speeds, up to and beyond 20,000 R. P. M. of the coiling can.
  • Figure 1 shows in elevation with parts in section a spinning frame including a high-draft unit and a frictional sliver control member according to the invention.
  • Figure 2 is an elevation of the draft unit.
  • Figure '3 shows in section the centrifugal can-spinning unit.
  • Figures 4 and 5 show respectively in vertical section and plan view the tubular reciprocating thread guide provided with means for controlling the thread during its twisting.
  • Figure 6 shows in section the lower end of a further embodiment of thread guide.
  • 1 is the framework of the spinning frame carrying a set of units A for the high-attenuation drawing.
  • Said attenuation units are provided with means for the controlling of the sliver in the draft field and are combined with an equal number of centrifugal can-spinning units B.
  • the draft units A and the corresponding spinning units B are arranged in zig-zag formation, so as to reduce the length of the spinning frame.
  • a device C is inserted which is adapted for frictionally controlling the thread during its formation and twisting.
  • the slivercontrolling means in the draft field comprise a pair of narrow endless belts or tapes 6,7 spanning the roller pairs 106, 206 and 107, 207, respectively.
  • the plane passing through the axes of the upper rollers 106 and 107 lies at rightangles to the plane N of the inner runs of the feed belts 6 and 7, while the plane passing through the axes of lower rollers 206 and 207 forms with the said plane N an angle which is different from 90.
  • the two inner superposed runs of tapes 6 and 7 hold between them the attenuated sliver which they in part guide and in part brake.
  • the said tape runs are pressed against each other by pressure means, such as blade springs 8 fastened by their curved upper ends to rigid frame parts 9 and acting against the tapes with their lower free ends.
  • pressure means such as blade springs 8 fastened by their curved upper ends to rigid frame parts 9 and acting against the tapes with their lower free ends.
  • springs 8 may swing freely towards and away from the attenuated sliver-carrying tapes and automatically alter the distance and the compression of the active runs of the tapes according to the sliver thickness.
  • a further control of the sliver within its attenuation field is obtained by means of the fixed sliver guide 10 which is inserted between the endless tapes 6 and 7 and the delivery roller pair 4,5.
  • these cans In order to permit this high-speed spinning and avoid long interruption for changing the full coiling cans, these cans must be such as to permit of spinning the thread into compact and slightly conical precision bobbins and of rapidly and easily extracting such bobbins from the coiling cans, as well as of substituting full cans with empty ones.
  • a composite spinning unit B which comprises a supporting bell ( Figures 1 and 3) rotatably supported by a cross member 101 of the framework.
  • Bell 20 has a hollow hub 120 through which the above mentioned reciprocating thread guide 11 passes.
  • Belt is driven through belt 23 running on pulleys 21 and 22.
  • a rigid centrifugal coiling can 24 is inserted, which is tumblershaped and has a perforated bottom 124 onw hich a disk 25 bears which serves for pushing the formed bobbin out of the can.
  • the bell and can are provided with coacting latching and unlatching means 28, 26, 27, 126, 29 adapted to be operated by automatic or semi-automatic devices, which form the subject matter of another copending application.
  • a spinning frame for spinning long and coarse natural vegetable fibres in a single continuous step comprising in combination a high attenuation sliver-draft unit having a pair of endless tapes between whose superposed runs the sliver passes, springs arranged to press said superposed runs of the tapes one against the other permitting an attenuation of the sliver of the order of 1:30 and over, a pair of delivery rolls, and a reciprocating tubular friction member including widely spaced smooth surface thread-friction pins of round section, ribs, and restricted outlet mouths to permit a guide of the thread being spun along a sinuous path while effecting a smoothing of its surface during its twisting, without hindering the propagation of the twisting up to said sliver delivery rolls, and a centrifugal can spinning unit rotatably mounted beneath said reciprocating tubular friction member to rotate at a rapid speed filled at the outlet of said friction member, said friction pins being arranged to slightly touch the thread being formed from a plurality of different sides of said pin

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US364418A 1952-12-19 1953-06-26 High speed spinning frames Expired - Lifetime US2787883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT317072X 1952-12-19

Publications (1)

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US2787883A true US2787883A (en) 1957-04-09

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ID=11234255

Family Applications (1)

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US364418A Expired - Lifetime US2787883A (en) 1952-12-19 1953-06-26 High speed spinning frames

Country Status (5)

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US (1) US2787883A (da)
BE (1) BE524431A (da)
CH (1) CH317072A (da)
DE (1) DE1033114B (da)
FR (1) FR1094904A (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176352A (en) * 1960-09-29 1965-04-06 Dixie Machine & Tool Company Magnetic means for moving a drafting apron to engage a strand
US3815350A (en) * 1972-01-22 1974-06-11 A Gardella Process for the production of yarns

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL97100C (da) * 1958-09-02

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052731A (en) * 1935-07-09 1936-09-01 Du Pont Rayon Co Apparatus for production of artificial thread
FR804336A (fr) * 1936-03-28 1936-10-21 Dispositif pour réaliser une torsion régulière des fils obtenus dans les filatures centrifuges
US2423721A (en) * 1945-06-01 1947-07-08 American Viscose Corp Bucket spinning guide
US2623346A (en) * 1950-01-16 1952-12-30 Lohfert Helmut Drawing mechanism for spinning machines
US2645822A (en) * 1946-12-10 1953-07-21 Uxbridge Worsted Company Inc Drafting textile fibers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR542151A (fr) * 1920-12-14 1922-08-07 Procédé et appareil pour l'étirage et le filage de mêche fibreuse
DE545679C (de) * 1930-02-20 1932-03-04 Siemens Schuckertwerke Akt Ges Topfspinnmaschine, insbesondere fuer Bastfaserspinnerei
US2117675A (en) * 1936-05-19 1938-05-17 Negishi Elzaburo High speed spinning machine
GB546521A (en) * 1941-05-29 1942-07-16 Fairbairn Lawson Combe Barbour Improvements in spinning machines for the production of yarns or threads
DE813428C (de) * 1949-03-30 1951-09-13 Glanzstoff Ag Spinnhuelse fuer haengende Spinnzentrifugen
DE858815C (de) * 1950-01-17 1952-12-08 Heidenreich & Harbeck Gmbh Feinspinnmaschine fuer Bastfasern oder lange Blattfasern, insbesondere Jute

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052731A (en) * 1935-07-09 1936-09-01 Du Pont Rayon Co Apparatus for production of artificial thread
FR804336A (fr) * 1936-03-28 1936-10-21 Dispositif pour réaliser une torsion régulière des fils obtenus dans les filatures centrifuges
US2423721A (en) * 1945-06-01 1947-07-08 American Viscose Corp Bucket spinning guide
US2645822A (en) * 1946-12-10 1953-07-21 Uxbridge Worsted Company Inc Drafting textile fibers
US2623346A (en) * 1950-01-16 1952-12-30 Lohfert Helmut Drawing mechanism for spinning machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176352A (en) * 1960-09-29 1965-04-06 Dixie Machine & Tool Company Magnetic means for moving a drafting apron to engage a strand
US3815350A (en) * 1972-01-22 1974-06-11 A Gardella Process for the production of yarns

Also Published As

Publication number Publication date
BE524431A (da) 1956-03-16
FR1094904A (fr) 1955-05-25
CH317072A (de) 1956-11-15
DE1033114B (de) 1958-06-26
CH317072A4 (da) 1974-05-31

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