US3001241A - Drafting train on continuous spinning machines - Google Patents

Drafting train on continuous spinning machines Download PDF

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Publication number
US3001241A
US3001241A US732568A US73256858A US3001241A US 3001241 A US3001241 A US 3001241A US 732568 A US732568 A US 732568A US 73256858 A US73256858 A US 73256858A US 3001241 A US3001241 A US 3001241A
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US
United States
Prior art keywords
drafting
apron
roving
aprons
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
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US732568A
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English (en)
Inventor
Aymerich Juan Comerma
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Individual
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Individual
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Publication date
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Publication of US3001241A publication Critical patent/US3001241A/en
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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 invention relates to a drafting train on continuous spinning machines of the type comprising two flexible aprons which retain the textile roving between them and accompany it to a point near the point of contact of the drafting rollers.
  • drafts are obtained of between and and it is furthermore made possible to construct continuous spinning machines wherein there operate in tandem a drafting train of flexible aprons and a train having a drafting rotor or a false twist device, so that, in addition to the 40 to 60% draft effected by the first train, the draft effected by the second train is also obtained.
  • Another object of the invention is to provide a drafting train on a continuous spinning machine having two flexible aprons retaining and accompanying the textile roving between them to a point near the point of contact of the drafting rollers, wherein one of the aprons in its path in which it accompanies the roving forms a reentrant angle due to the forward guide member of the second apron, and said first apron has its forward end substantially nearer to the opposite drafting roller than the second apron, in such a manner that, before leaving the first apron, the roving surrounds the said first apron, in its forward part, over a path describing a convex pronounced arch, the roving departing from the apron at a point positioned nearer to the opposite drafting roller than to the other drafting roller and travelling over an arch-shaped path supported on the said opposite drafting roller.
  • FIGURE 1 is a front view of a drafting train according to the invention
  • FIGURE 2 is a view in cross-section along the line 11-11 of FIGURE 1;
  • FIGURE, 3 is a, partial view, in an enlarged scale, of
  • reference numeral 1 designates the textile roving which is being spun
  • reference numerals 2 and 3 represent the aprons retaining and accompanying the said roving
  • 4 and 5 designate the two drafting rollers
  • P is the point of contact of the said rollers 4 and 5
  • 6 and 7 are the forward guide members-revolving rollers in this examplerespectively guiding
  • the aprons Zand 3 and 8 and 9 are the rearward guide members for the aprons which, in this example, consist of a number of rollers having furthermore the function of feed rollers.
  • the apron 2 moves superposed on the apron 3 over the whole of the path section extending between the radius 8' of the roller '8 and the radius 7 of the roller 7.
  • the pathover which the roving 1 is accompanied by the apron 2 extends from the said radius 8 to the radius 6 of the forward guide member 6 and consists of two parts, the said section of the path 8'7" over which the roving is doubly accompanied, due to the superpositioning of the two aprons, and the section of the path 7"-6 where the roving is accompanied by only a single apron.
  • the forward guide member 6 forwardly guiding the apron 2 is nearer to the point of contact P than the for- Ward guide member 7 forwardly guiding the apron 3, the position of the said forward guide member 6 being such that the roving 1, before reaching the said point P, travels over a path bearing on the drafting roller 5; this path is the path lying between the radii 5 and 5" of the drafting roller 5.
  • the difference in the distance of the forward guide members 6 and 7 from the point 1? makes it possible to move the forward guide member 6 to a point very near the said point P and the drafting roller 5, without the forward guide member 7 hindering it.
  • the path over which the roving travels after leaving the apron 2 at 6" and before reaching the point P, at which it is received by the two drafting rollers 4 and 5, may be made extremely short, and the path over which the fibres travel without being accompanied from the radius 6" as far as the radius 5 is still shorter.
  • the separating distance has been shown greater than is necessary, for the sake of greater clarity.
  • the apron 2 shall, in its path wherein it accompanies the roving 1i.e. in the path extending from the radius 8' to the radius 6form a re-entrant angle due to the projecting position of the roller 7 which forwardly guides the apron 3.
  • This re-entrant angle is designated A and the two sides of the said angle are the two portions ofthe apron 2 extending from 8 to 7 and from 7 to 6.
  • the relative position of the two aprons 2 and 3 is such that, due to the projecting position of the cylinder 8 acting as a rearward guide member of the apron 2, a second reentering angle B is produced in the apron 34.
  • the guide members for the aprons 2 and 3, i.'e. the forward rollers 6 and 7 and the rearward rollers 8 and 9 are mounted in lateral support means, such as indicated by reference numeral 10 in FIGURES 1 and 2, the said support means being mounted in articulated form on a pivot 11 parallel to the rollers of the drafting train.
  • the distance between .the point of contact P of the drafting roll- 'ers 4 and 5 and the forward guide member 6, which in this example is the one nearest the said point of contact P may be adjusted at will.
  • This measure provides a simple means of giving to the said distance a value proportional to the average length of the component fibres ofthe roving 1 which is being spun.
  • a drafting train as claimed in clainr 1 further including support means in which said rearward and forward rollers for said aprons are mounted, and means pivotally mounting said support means for movement about an axis parallel to said drafting rollers whereby the length of the path over which the textile roving travels may be adjusted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US732568A 1957-05-21 1958-05-02 Drafting train on continuous spinning machines Expired - Lifetime US3001241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES3001241X 1957-05-21

Publications (1)

Publication Number Publication Date
US3001241A true US3001241A (en) 1961-09-26

Family

ID=8442527

Family Applications (1)

Application Number Title Priority Date Filing Date
US732568A Expired - Lifetime US3001241A (en) 1957-05-21 1958-05-02 Drafting train on continuous spinning machines

Country Status (5)

Country Link
US (1) US3001241A (fr)
BE (1) BE567688A (fr)
DE (1) DE1091012B (fr)
FR (1) FR1195725A (fr)
GB (1) GB835865A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806991A (en) * 1971-09-09 1974-04-30 Deering Milliken Res Corp Drafting apparatus
US3918127A (en) * 1973-09-17 1975-11-11 Braschler & Cie Apparatus for blending rovings
EP0107828A2 (fr) * 1982-10-11 1984-05-09 Maschinenfabrik Rieter Ag Train d'étirage
JP2006505703A (ja) * 2002-11-11 2006-02-16 マシーネンファブリク リーター アクチェンゲゼルシャフト 圧縮装置を有する紡績機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB956054A (en) * 1960-10-26 1964-04-22 Asea Ab Semi-conductor device with a gas-tight casing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189816297A (en) * 1898-07-26 1899-06-24 Josef De Miniszewski Improvements in and connected with Means for Drawing Textile Fibres.
GB359837A (en) * 1930-02-20 1931-10-29 Saechsische Textilmaschinenfab Improvements in or relating to pull-through drawing apparatus for medium and long staple fibrous material
US2675585A (en) * 1947-03-31 1954-04-20 Rieter Joh Jacob & Cie Ag Drawing apparatus for textile fiber preparation
US2695428A (en) * 1948-07-10 1954-11-30 Rieter Joh Jacob & Cie Ag Mechanism for drawing roving of different staple lengths
US2926393A (en) * 1956-03-15 1960-03-01 Gardella Adriano Adjustable pressure devices for double endless tape sliver draft units

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261043A (fr) * 1900-01-01
FR444243A (fr) * 1911-05-27 1912-10-12 Fernando Casablancas Mécanisme pour retenir les mèches textiles et les livrer aux cylindres étireurs
FR19969E (fr) * 1912-05-24 1915-12-30 Fernando Casablancas Mécanisme pour retenir les mèches textiles et les livrer aux cylindres étireurs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189816297A (en) * 1898-07-26 1899-06-24 Josef De Miniszewski Improvements in and connected with Means for Drawing Textile Fibres.
GB359837A (en) * 1930-02-20 1931-10-29 Saechsische Textilmaschinenfab Improvements in or relating to pull-through drawing apparatus for medium and long staple fibrous material
US2675585A (en) * 1947-03-31 1954-04-20 Rieter Joh Jacob & Cie Ag Drawing apparatus for textile fiber preparation
US2695428A (en) * 1948-07-10 1954-11-30 Rieter Joh Jacob & Cie Ag Mechanism for drawing roving of different staple lengths
US2926393A (en) * 1956-03-15 1960-03-01 Gardella Adriano Adjustable pressure devices for double endless tape sliver draft units

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806991A (en) * 1971-09-09 1974-04-30 Deering Milliken Res Corp Drafting apparatus
US3918127A (en) * 1973-09-17 1975-11-11 Braschler & Cie Apparatus for blending rovings
EP0107828A2 (fr) * 1982-10-11 1984-05-09 Maschinenfabrik Rieter Ag Train d'étirage
EP0107828A3 (en) * 1982-10-11 1984-06-06 Maschinenfabrik Rieter A.G. Drawing frame
US4520532A (en) * 1982-10-11 1985-06-04 Rieter Machine Works Limited Drafting mechanism for spinning machines
JP2006505703A (ja) * 2002-11-11 2006-02-16 マシーネンファブリク リーター アクチェンゲゼルシャフト 圧縮装置を有する紡績機

Also Published As

Publication number Publication date
GB835865A (en) 1960-05-25
BE567688A (fr) 1960-08-12
FR1195725A (fr) 1959-11-19
DE1091012B (de) 1960-10-13

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