US2180172A - Apparatus for producing from endless fibers a card sliver suitable for drawing - Google Patents

Apparatus for producing from endless fibers a card sliver suitable for drawing Download PDF

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Publication number
US2180172A
US2180172A US247700A US24770038A US2180172A US 2180172 A US2180172 A US 2180172A US 247700 A US247700 A US 247700A US 24770038 A US24770038 A US 24770038A US 2180172 A US2180172 A US 2180172A
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Prior art keywords
sliver
rollers
comb
producing
pairs
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US247700A
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Schmitt Karl Josef
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SACHSISCHE TEXTILMASCHINENFABR
SACHSISCHE TEXTILMASCHINENFABRIK VORM RICH HARTMANN AG
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SACHSISCHE TEXTILMASCHINENFABR
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/06—Converting tows to slivers or yarns, e.g. in direct spinning
    • D01G1/10—Converting tows to slivers or yarns, e.g. in direct spinning by cutting

Definitions

  • This invention relates to a method of producing from endless artificial fibers a continuous card sliver suitable for drawing.
  • the bers of the sliver are cut by a cutting cylinder with narrow mutually displaced knives in such a manner that the pieces of fiber, owing to the cuts distributed over the Width of the sliver, preserve a certain cohesion.
  • Owing to the smooth cut surfaces of the sliver pieces it is, however, not possible to shift the bers separately and successively in a drawing apparatus but the pieces Aof the sliver as such are shifted. 'Ihe sliver leaving the drawing apparatus consequently is of very unequal thickness so that several doublings are necessary to obtain the necessary 1miformity.
  • the endless sliver is pierced, according to the invention, by means of needles or the like in such a manner that the fibers are cut individually or almost individually, the sliver being held taut at the cutting point by pairs of rollers or the like.
  • Fig. 1 shows the apparatus in side elevation
  • Fig. 2 is a front view thereof.
  • the artificial bers fed in an endless sliver from the articial silk spinning machine are stretched between two pairs of rollers a and b.
  • a comb d is arranged which is vertically guided and moved up and down by a shaft e through the intermediary of an eccentric f.
  • the needles of the comb d are of such shape, that they cut the fibers as far as possible individually or approximately individually.
  • the space between the piercing point and the clamping point of the pair of rollers b is smaller than the length of staple.
  • the comb d is shifted after each stroke a very short distance @A00 to tos of a millimetre) by means of a cam g which is driven from the shaft e through the intermediary of a worm gear h.
  • the cam g preferably formed 0f spirals, firmly bears against the surface k under the iniluence of a spring i, so that the shaft e is shifted in lateral direction together with the comb d. This is effected very gradually, the piercing operations of the Comb taking place in Very rapid succession.
  • the comb Owing to the step at the end of one of the spirals of the cam, the comb is precipitately returned to the right into its initial position, under the influence of the spring z', as soon as the lateral movement imparted to the comb by the spiral is terminated.
  • the ratio between the comb movement and that of the sliver movement must be chosen according to the desired length of staple.
  • rollers b On theouter side of the pair of rollers b another pair of rollers c is arranged, these rollers being driven at a higher speed than the rollers b and serving to tear the bers which are not separated by the comb d.
  • the needles of the comb may be blunt, very sharp, serrated, hook-shaped or similarly shaped.
  • the slivers delivered from several apparatus of the type described are doubled and stretched in a normal drawing frame and condensed at o, L. by a revolving tube or roller rubbers and finally formed into a lap p.
  • An apparatus for producing from endless fibers a sliver suitable for drawing comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between said rollers, and means for laterally shifting said comb after every effective stroke.
  • An apparatus for producing from endless fibers a sliver suitable for drawing comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs ⁇ of rollers to pierce the sliver stretched between said rollers, a cam disc formed by at least one spiral race bearing against said comb and adapted to gradually displace the same laterally after each eii'ective stroke, and means for precipitately returning said comb into its initial position at the end of its lateral displacement.
  • An apparatus for producing from endless fibers a sliver suitable fo'r drawing comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between said rollers, and means for laterally shifting said comb after every effective stroke, the distance between the second pair of rollers and the piercing point being shorter than the desired length oi staple.
  • An apparatus for producing from endless bers a. sliver suitable for drawing, comprising 5 in combination two pairs of sliver stretching rollers, a. comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between sad rollers, means for laterally shitting said comb after every effective stroke, and a. table under said comb adapted to support the sliver in proximity to the piercing point.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Nov. 14, 1939. KA SCHMn--r 2,180,172
APPARATUS FOR PRODUCING FROM ENDLESS FIBERS A GARD sLIvER SUITABLE FOR DRAWING Filed Dec. 24, 1938 .7m/enfer:
www fa Patented Nov. 14, 1939 PATENT OFFICE I APPARATUS FOR PRODUC'ING FROM END- LESS FIBERS A CARD SLIVER SUITABLE FOR DRAWING Karl Josef Schmitt, Chemnitz, Germany, assignor to Schsische Text'ilmaschinenfabrik vorm. Rich. Hartmann Aktiengesellschaft, Chemnitz, Germany, a corporation I Application December 24, A1938, Serial No. 247,700 In Germany February 5, 1938 4 Claims.
This invention relates to a method of producing from endless artificial fibers a continuous card sliver suitable for drawing.
Various methods have been proposed for this purpose but in practice they possess'more or less objections or are entirely impracticable.
According to yone of the known proposals the bers of the sliver are cut by a cutting cylinder with narrow mutually displaced knives in such a manner that the pieces of fiber, owing to the cuts distributed over the Width of the sliver, preserve a certain cohesion. Owing to the smooth cut surfaces of the sliver pieces it is, however, not possible to shift the bers separately and successively in a drawing apparatus but the pieces Aof the sliver as such are shifted. 'Ihe sliver leaving the drawing apparatus consequently is of very unequal thickness so that several doublings are necessary to obtain the necessary 1miformity.
For the purpose of avoiding the abovementioned disadvantages the endless sliver is pierced, according to the invention, by means of needles or the like in such a manner that the fibers are cut individually or almost individually, the sliver being held taut at the cutting point by pairs of rollers or the like.
An apparatus for carrying out the invention is illustrated, by way of example, in the accompanying drawing in which:
Fig. 1 shows the apparatus in side elevation,
Fig. 2 is a front view thereof.
The artificial bers fed in an endless sliver from the articial silk spinning machine are stretched between two pairs of rollers a and b. Above this point a comb d is arranged which is vertically guided and moved up and down by a shaft e through the intermediary of an eccentric f. The needles of the comb d are of such shape, that they cut the fibers as far as possible individually or approximately individually. The space between the piercing point and the clamping point of the pair of rollers b is smaller than the length of staple.
To enable the needles to pierce the sliver at points distributed over the entire width, the comb d is shifted after each stroke a very short distance @A00 to tos of a millimetre) by means of a cam g which is driven from the shaft e through the intermediary of a worm gear h. The cam g preferably formed 0f spirals, firmly bears against the surface k under the iniluence of a spring i, so that the shaft e is shifted in lateral direction together with the comb d. This is effected very gradually, the piercing operations of the Comb taking place in Very rapid succession. Owing to the step at the end of one of the spirals of the cam, the comb is precipitately returned to the right into its initial position, under the influence of the spring z', as soon as the lateral movement imparted to the comb by the spiral is terminated. The ratio between the comb movement and that of the sliver movement must be chosen according to the desired length of staple.
It is advantageous, to supportthe sliver in closest proximity to the piercing points, that is between the pairs of rollers a and b, by a. table m provided with a notch or recess, so that stretching of the bers is avoided during the cutting operation or can only take place in direct proximity to the piercing point.
On theouter side of the pair of rollers b another pair of rollers c is arranged, these rollers being driven at a higher speed than the rollers b and serving to tear the bers which are not separated by the comb d.
The needles of the comb may be blunt, very sharp, serrated, hook-shaped or similarly shaped.
The slivers delivered from several apparatus of the type described are doubled and stretched in a normal drawing frame and condensed at o, L. by a revolving tube or roller rubbers and finally formed into a lap p.
I claim:
1. An apparatus for producing from endless fibers a sliver suitable for drawing, comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between said rollers, and means for laterally shifting said comb after every effective stroke.
2. An apparatus for producing from endless fibers a sliver suitable for drawing, comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs` of rollers to pierce the sliver stretched between said rollers, a cam disc formed by at least one spiral race bearing against said comb and adapted to gradually displace the same laterally after each eii'ective stroke, and means for precipitately returning said comb into its initial position at the end of its lateral displacement.
3. An apparatus for producing from endless fibers a sliver suitable fo'r drawing, comprising in combination two pairs of sliver stretching rollers, a comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between said rollers, and means for laterally shifting said comb after every effective stroke, the distance between the second pair of rollers and the piercing point being shorter than the desired length oi staple.
4. An apparatus for producing from endless bers a. sliver suitable for drawing, comprising 5 in combination two pairs of sliver stretching rollers, a. comb vertically reciprocated between said pairs of rollers to pierce the sliver stretched between sad rollers, means for laterally shitting said comb after every effective stroke, and a. table under said comb adapted to support the sliver in proximity to the piercing point.
KARL JOSEF SCHMITT.
US247700A 1938-02-06 1938-12-24 Apparatus for producing from endless fibers a card sliver suitable for drawing Expired - Lifetime US2180172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES130716D DE715374C (en) 1938-02-06 1938-02-06 Device for the production of a draftable sliver from endless fibers, in particular synthetic fibers

Publications (1)

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US2180172A true US2180172A (en) 1939-11-14

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US (1) US2180172A (en)
CH (1) CH209301A (en)
DE (1) DE715374C (en)
FR (1) FR846893A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420033A (en) * 1941-09-10 1947-05-06 Robert A Fairbairn Method and apparatus for separating fibers
US2641027A (en) * 1946-06-27 1953-06-09 Celanese Corp Manufacture of staple fiber products
US2737687A (en) * 1947-04-30 1956-03-13 Celanese Corp Production of textile materials
US3050928A (en) * 1959-08-18 1962-08-28 Sumner Company Inc Converting continuous filament to staple fiber
US3312052A (en) * 1965-05-07 1967-04-04 Teijin Ltd Method of producing slub yarns
US3425623A (en) * 1965-08-09 1969-02-04 Autosearch Inc Steam separator
US20160177643A1 (en) * 2014-12-17 2016-06-23 Schlumberger Technology Corporation Modular fiber feeder
US20170121864A1 (en) * 2015-11-02 2017-05-04 Kabushiki Kaisha Toyota Jidoshokki Method and device for cutting lap in comber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741579C (en) * 1940-12-24 1943-11-13 Saechsische Textilmaschinenfab Device for the production of a warpable sliver from artificial threads
US2591563A (en) * 1947-02-27 1952-04-01 Emmons Loom Harness Company Loom harness with slidable heddle bar support

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420033A (en) * 1941-09-10 1947-05-06 Robert A Fairbairn Method and apparatus for separating fibers
US2641027A (en) * 1946-06-27 1953-06-09 Celanese Corp Manufacture of staple fiber products
US2737687A (en) * 1947-04-30 1956-03-13 Celanese Corp Production of textile materials
US3050928A (en) * 1959-08-18 1962-08-28 Sumner Company Inc Converting continuous filament to staple fiber
US3312052A (en) * 1965-05-07 1967-04-04 Teijin Ltd Method of producing slub yarns
US3425623A (en) * 1965-08-09 1969-02-04 Autosearch Inc Steam separator
US20160177643A1 (en) * 2014-12-17 2016-06-23 Schlumberger Technology Corporation Modular fiber feeder
US20170121864A1 (en) * 2015-11-02 2017-05-04 Kabushiki Kaisha Toyota Jidoshokki Method and device for cutting lap in comber
US10208406B2 (en) * 2015-11-02 2019-02-19 Kabushiki Kaisha Toyota Jidoshokki Method and device for cutting lap in comber

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Publication number Publication date
DE715374C (en) 1941-12-19
CH209301A (en) 1940-04-15
FR846893A (en) 1939-09-27

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