US2916779A - keyser - Google Patents

keyser Download PDF

Info

Publication number
US2916779A
US2916779A US2916779DA US2916779A US 2916779 A US2916779 A US 2916779A US 2916779D A US2916779D A US 2916779DA US 2916779 A US2916779 A US 2916779A
Authority
US
United States
Prior art keywords
rollers
apron
aprons
drafting
guide rollers
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
Other languages
English (en)
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 filed Critical
Application granted granted Critical
Publication of US2916779A publication Critical patent/US2916779A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

  • the present inventiomthis object has been materialized by providing the lower and/or the upper guide rollers of the belts with at least one recess within the area of travel of the fiber strand.
  • These recesses may be provided in the guide rollers in alternate succession of the latter, and either in'the guide rollers for only one apron or in the associated rollers of both aprons. They may also be providedin someof the associated rollers of both aprons, while in-others they may beentirely omitted.
  • Another feature of the invention consists in making the distance, the number, and/ or the weight of the guide rollersof each-drafting unit adjustable. All of the guide the fibers directly engaging with the two aprons are retained to a greater extent than those disposed at the in side of the beltsfandthat the inner fibers mightstart to float when the other fibers while being drafted are pulled out of the fiber. strand. This disadvantage becomes noticeable particularly if the floating fibers are considerably fabric will result. p
  • rollers of one drafting unit may also be made either of thesame weight orof different Weights. --By means of the present inventon it is possible to attain advantages which previously were unattainable either in the manufacture of spinning "machines or in their operation any of the numerous branches: of thespinning n; i: i a
  • the present "invention permits a uniform manufacture of the individual parts of a drafting unit which will'be applicable in place of all other types of drafting units previously used and thus a universal application of such units to all types of fibers in the various branches of spinningfl p i
  • the drafting'unit according to the invention may be" applied without difiiculty either for processing long staple fibers, for example, worsted, or-short staple fibers,
  • FIG. 1 illustrates a section of a drafting unit with a recessed guide roller according to the prior art
  • Fig. 2 shows a diagrammatic side view of a part of a drafting unit according to the prior art, in which the material is drafted along a curved path;
  • Fig. 3 shows a partial perspective view of the guide rollers according to the present invention for use with a double apron
  • Pig. 4 illustrates a cross section of a double-apron drafting unit according to the invention
  • Fig. 5 illustrates a cross section of the same drafting unit as shown in Fig. 4, but with the pairs of cooperating guide rollers spaced differently from each other;
  • Fig. 6 shows a cross section of the same drafting unit as in Figs. 4 and 5.but a different arrangement of the rollers of each pairs of guide rollers; while Fig. 7 illustrates an arrangement which differs from that of Fig. 4 in that two grooved end rollers (directly preceding the delivery rollers not shown) are employed instead of one only.
  • Fig. 1 illustrates a grooved apron guiding roller as used prior to the invention.
  • the lower guide roller 1 has a recess; or groove into which the belt can deflect, while the fiber strand passes through thedrafting area formed between the upper and lower aprons by means of the upper and lower guide rollers.
  • Fig. 2' shows the heretofore known manner of mount elastic flexibility and the deflection of the aprons, and no longer, as in the conventional drafting frames, by the amount of pressure of the upper apron upon the lower apron, that is, by the weight of the individual upper rollers, one spinning point can no longer be influenced by an adjacent spinning point.
  • spinning points particularly more than two, were loaded by one upper roller (either with or without an upper apron), and a thicker slubbing or sliver portion was drawn through the rollers at one spinning point, the other point at the same upper roller could be released so that the retaining action upon the fibers was also released atthispoint.
  • the upper rollers have for this reason in the past been designed for no more than one or two spinning points, and it was therefore necessary also in wide-belt drafting'units to mount these upper rollers in special supports between the normal individual bearing supports.
  • the present invention renders such intermediate supports unnecessary.
  • the lower guide rollers including the lower apron may extend from roller stand to roller stand and may be mounted therein or in common pivotable frames on said roller stands, since the new manner of guiding the aprons prevents the transmission of any influence from one drawing point to another due to the fact that a possible thicker slubbing or sliver .portion can only produce an increasing bulging of the apron at this particular spinning point but cannot result in a lifting of the upperroller.
  • Figs. 3 and 4 illustrate the principle according to the present invention.
  • Guide rollers 1, 2, 3, and 4 for the lower apron and the corresponding guide rollers 1, 2., 3', .and d for the upper apron have alternating recesses or grooves at the different spinning points. These grooves alternate both in .their horizontal succession as well as vertically between the associated upper and lower rollers.
  • Fig. .4 illustrates the superimposed aprons as being rigidly sup ported in an alternating succession between the guide rollers only either at the upper or lower side, while at the' respective opposite side they are free and can deflect into the recesses.
  • rollers may all. beof, equal weight since the control of the retaining force will be 'attainedby the number of or the distance between the guide rollers. Also, any changes in thedimensions tO'WhlCh the apronsmight, be subjected after. acertti'nlength of timeofoperation, for example, by swelling, and their effect upon the spinning process will be alleviated by the new manner of guiding the aprons.
  • the location and depth of the recesses within the individual upper or lower guide rollers may be varied in many different ways.
  • the recesses may be entirely omitted in some of the associated pairs of rollers, for example, in the very first pair of rollers 1, 1', and they may be provided only in the following pairs.
  • Fig. 5 shows thelower guide roller 1 adjacent to the spinning roller as Well as the upper guide roller 1' as being without any recesses or grooves, while the lower guide rollers land 4 and the upper guide roller 3' are each provided with a recess or groove. Furthermore,
  • the distances between theindividual guide rollers are made smaller than those shown in Fig. 4 so that a drafting unit of this kind may also be used for drafting fiber strands with short staple fibers.
  • the first guide rollers. 1 and 1' are likewise without grooves, while the succeeding lower guide roller 3 and the upperguide rollers 2 and 4' are The distance between the. individual guide-rollers is still less thanin Fig. 5.
  • this, drafting unit includes another non-grooved pair of; guide rollers 6 and 6-which forms the rear end of the drawingarea so that this arrangement of the draftingunitwill be suitable for processing short fibers.
  • Fig. 7 shows an arrangement substantially similar to that of Fig.- 4, except for the fact that the two first guide rollers; 1 and 1' are provided with grooves.
  • Such roller arrangement is suitable particularly for drafting very longstaple fibers, and' it is thus no longer necessary to provide a special machine which is designed exclusively for drafting such long fibers.
  • Theabove examples also showthat numerous variations in the relative arrangement: of the. guide rollers may be attained by employing guide rollers of different diameters.
  • the distance between the rollers may be adjusted in any convenient manner for instance in the manner shown in U.S. Patent No. 1,644,747 or U.S. Patent No. 2,741,801.
  • a drafting unit for spinning machines which includes: an upper apron, a lower apron for cooperation with said upper apron, and more than two pairs of mating guide rollers with one guide roller of each pair of guide rollers located in said upper apron and the other guide roller of each pair located in said lower apron, said pairs of guide rollers being arranged one behind the other in spaced relationship to each other, each of at least two successive pairs of said pairs of mating guide rollers being composed of a grooved guide roller in one of said aprons and a mating roller with a continuous cylindrical surface extending over the width of said aprons located in the other apron, the grooves of said grooved rollers being located within the respective apron intermediate the side edges thereof, the arrangement being such that the grooved rollers of said successive pairs of rollers are alternately located within said upper apron and said lower apron respectively.
  • a drafting unit for spinning machines which includes: an upper apron, a lower apron for cooperation with said upper apron, more than two pairs of mating guide rollers with one guide roller of each pair of guide rollers located in said upper apron and the other guide roller of each pair located in said lower apron, said pairs of guide rollers being arranged one behind the other in spaced relationship to each other, each of at least two successive pairs of said pairs of mating guide rollers being composed of a grooved guide rollers in one of said aprons and a mating roller with a continuous cylindrical surface extending over the width of said aprons located in the other apron, the grooves of said grooved rollers being located within the respective apron intermediate the side edges thereof, the arrangement being such that the grooved rollers of said successive pairs of rollers are alternately located Within said upper apron and said lower apron respectively, and an additional pair of mating rollers arranged as end rollers of and within said upper and lower ap
  • a drafting unit for spinning machines which includes: an upper apron, a lower apron for cooperation with said upper apron, more than two pairs of mating guide rollers with one guide roller of each pair of guide rollers located in said upper apron and the other guide roller of each pair located in said lower apron, said pairs of guide rollers being arranged one behind the other in spaced relationship to each other, each of at least two successive pairs of said pairs of mating guide rollers being composed of a grooved guide roller in one of said aprons and a mating roller with a continuous cylindrical surface extending over the width of said aprons located in the other apron, the grooves of said grooved rollers being located within the respective apron intermediate the side edges thereof, the arrangement being such that the grooved rollers of said successive pairs of rollers are alternately located within said upper apron and said lower apron respectively, and an additional pair of mating rollers arranged as end rollers of and within said upper and lower aprons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US2916779D 1956-08-11 1957-07-29 keyser Expired - Lifetime US2916779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH20606A DE1065761B (de) 1956-08-11 1956-08-11 Doppelriemchenstreckwerk an Vor- und Feinspinnmaschinen

Publications (1)

Publication Number Publication Date
US2916779A true US2916779A (en) 1959-12-15

Family

ID=7428811

Family Applications (1)

Application Number Title Priority Date Filing Date
US2916779D Expired - Lifetime US2916779A (en) 1956-08-11 1957-07-29 keyser

Country Status (5)

Country Link
US (1) US2916779A (fr)
CH (1) CH362347A (fr)
DE (1) DE1065761B (fr)
FR (1) FR1180378A (fr)
GB (1) GB823170A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB920427A (fr) * 1959-04-10 1900-01-01
GB993844A (en) * 1960-11-20 1965-06-02 Mackie & Sons Ltd J Improvements relating to textile drafting apparatus
DE3536085A1 (de) * 1985-10-09 1987-04-09 Zinser Textilmaschinen Gmbh Doppelriemchen-streckwerk
DE4438946A1 (de) * 1994-10-31 1996-05-02 Zinser Textilmaschinen Gmbh Doppelriemchen-Streckwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644747A (en) * 1924-02-04 1927-10-11 Machine for drafting fibrous materials
US2255821A (en) * 1939-01-24 1941-09-16 Schlipp Ludwig Double tape drawing frame for spinning and similar machines
DE741449C (de) * 1941-06-25 1943-11-11 Hermann Kluftinger Dipl Ing Riemchenstreckwerk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644747A (en) * 1924-02-04 1927-10-11 Machine for drafting fibrous materials
US2255821A (en) * 1939-01-24 1941-09-16 Schlipp Ludwig Double tape drawing frame for spinning and similar machines
DE741449C (de) * 1941-06-25 1943-11-11 Hermann Kluftinger Dipl Ing Riemchenstreckwerk

Also Published As

Publication number Publication date
DE1065761B (de) 1959-09-17
GB823170A (fr) 1959-11-04
CH362347A (de) 1962-05-31
FR1180378A (fr) 1959-06-03

Similar Documents

Publication Publication Date Title
US2896269A (en) Multi-drawing frame particularly adapted for use on high-speed spinning frames
US3090081A (en) Fiber handling arrangement and process
US2206232A (en) Apparatus for drafting textile slivers or rovings
US2695428A (en) Mechanism for drawing roving of different staple lengths
US4768262A (en) Apparatus and method for textile strand drafting
US2203423A (en) Long draft apparatus
US2916779A (en) keyser
US3636591A (en) Drafting device for textile machines
US2471057A (en) Method and apparatus for drafting textile fibers
US2323882A (en) Drafting mechanism for roving frames
US2179078A (en) Method and means for making drafted yarn
US2498364A (en) Arrangement for
US20020066165A1 (en) Sliver deflecting device positioned between two drafting roll pairs of a sliver drafting unit
US2771639A (en) System for drafting fibrous materials
US3131438A (en) Fiber handling drafting roll apparatus and method of use
US2948931A (en) Thick and thin yarn producing apparatus
US3537145A (en) Ring spinning drafting device
US3778995A (en) Drafting method
US3589119A (en) Device for feeding spinning machines with a sliver
GB1430727A (en) Methods of and apparatus for forming textile yarns
US5016323A (en) High-draft drafting device for a flyerless spinning process
US2624074A (en) Roller-type drafting apparatus of textile spinning and analogous machinery
US3126585A (en) Apron control means for drawing apparatus
US1799448A (en) Drawing mechanism for fibrous material
US3898712A (en) Fibre control arrangements for textile drafting systems