US2381983A - Drafting mechanism for textile - Google Patents

Drafting mechanism for textile Download PDF

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Publication number
US2381983A
US2381983A US2381983DA US2381983A US 2381983 A US2381983 A US 2381983A US 2381983D A US2381983D A US 2381983DA US 2381983 A US2381983 A US 2381983A
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US
United States
Prior art keywords
belts
rollers
drawing rollers
plane
right angles
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Expired - Lifetime
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English (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
    • 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
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only

Definitions

  • This invention relates to drafting mechanisms for textile fibers of the type using endless belts engaging and guiding the fiber being drawn.
  • Two-belt draft mechanisms of this type usually comprise a pair of rollers each carrying an endless belt, between which belts the fiber passes,
  • the object of the present invention is to provide an improved mechanism of the above type which enables drafting to be carried out under morefavourable conditions than hitherto.
  • the endless belts are so arranged with respect to the front drawing rollers that the flattened strand of fibers passes from between the endless belts and is delivered to the front drawing rollers in a plane at right angles to the line of contact of said drawing rollers, while the surfaces of said belts which are gripped between the belt driving rollers are in a plane at right angles to the plane in which the strand passes from between. the belts.
  • the belts can be driven by positively driven rollers disposed lengthwise across the machine and capable of being coupled and driven as a singleroller in the usual way, while at the same time, the flattened strand of fibers is delivered to the front drawing rollers in a plane at right angles to the line of contact of said drawing rollers, whereby the more loosely held fibers at the edgesof the strand are squeezed towards the middle by the drawing rollers.
  • Figures 1, 2 and 3 illustrate the preferred embodiment, Figures 1 and 2 being plan and side elevational views respectively while Figure 3 is a view similar to Figure 2 but showing in addition the front and back drawing rollers,
  • Figures 4 and 5 are side elevational and plan views respectively of another embodiment.
  • the endless belts l and 2 are driven by the roll-- ers 3 and 4 which are disposed with their axes at right angles to the axes of the. tensor or guide members 5 whereby the belts are given a gradual to the belt driving rollers, but after leaving the latter they are relatively slack all the way until they reach the front again.
  • it may be necessary .or advantageous to increase the grip of the belts on the textile fibers by pressing them together or by deflecting them from their straight path and various ways in which this may be done are illustrated in Figures 6 to 10 as applied to the embodiment described with reference to Figures 1, 2, and 3.
  • the back guiding members 6 are replaced by staggered members l3, I3, which have a hip or pincer effect on the belts.
  • Figures 6 to 10 are formed in the flat plate which connects Figures 6 to 10 illustrate various means for in- Y creasing-the grip of the belts on the fibers as applied to the embodiment of Figures 1, 2 and 3.
  • each belt is in contact with the fibers while passing from the back guiding members 6 to the front guiding members 5, while in passing from the front guiding members 5 to the back guiding members 6, it
  • Drafting mechanism for textile fibers comprising front drawing rollers, endless belts for engaging and guiding said fibers and feeding 7 them to said front drawing rollers, front guiding trated the belt driving rollerslare disposed with What I claim and desire to secure 'by Letters Patent of the United States is:
  • l.'Drafting mechanism for textile fibers comprising front drawing rollers, endless belts for engaging and guiding said fibers and feeding them to said front drawing rollers, front guiding members for said endless belts arranged with their longitudinalaxes. a. right angles to.
  • Drafting mechanism for textile fibers comprising front drawing rollers, endlessbelts for engaging and guiding said fibers. and feeding them to said front drawing rollers, front guiding members for said endless belts arranged ,with their longitudinal axes at right angles to the line of contactof said-front drawing rollers, whereby the flattened strand offibers' is delivered to said front drawing rollers in a plane at right angles to the line of contact of saidfront drawing rollers, back guiding members for said endless belts arranged with their longitudinal axes at right angles to the line of contact of said front drawing members for said endless belts arranged with "their longitudinal axes at right angles to the line of contact of said front drawing rollers, whereby the flattened strand of fibers is delivered to the front drawing rollers in a plane at right angles to the lineof contact of said front drawing rollers, and driving rollers for said endless belts rollers, and driving rollers for said endless belts intermediate said front and back guiding members and with their longitudinal axes parallel to the line of contact of said front
  • said back and front guiding members consist of pairs of fixed members, one member of each pair having a portion extending along the belt and pressing it into contact with the strand in a resilient manner.
  • Drafting mechanism comprising in addition means for diverting the belts from the plane in which said belts pass between said back and front guiding members.
  • Drafting mechanism comprising in addition means for diverting the belts from their straight path to increase their grip on the strand, saidmeans consisting of one or more pegs or the like which are inserted in holes formed in the machine and so disposed that the belts are deflected from their straight path.
  • said back guiding members consist of fixed members which exert a nip or pincer effect on the belts to increase their grip on the strand.
  • Drafting mechanism comprising in addition .means for-diverting the belts from their straight path to increase their grip on the strand,- saidmeans consisting of two star wheels located one within' each belt and-so disposed with respect to each other and to the -belt that they exert a nip or pincer effect on said beltsto increase their gri on the ⁇ strand.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US2381983D 1941-10-27 1942-11-20 Drafting mechanism for textile Expired - Lifetime US2381983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1381441 1941-10-27

Publications (1)

Publication Number Publication Date
US2381983A true US2381983A (en) 1945-08-14

Family

ID=32527194

Family Applications (1)

Application Number Title Priority Date Filing Date
US2381983D Expired - Lifetime US2381983A (en) 1941-10-27 1942-11-20 Drafting mechanism for textile

Country Status (5)

Country Link
US (1) US2381983A (en(2012))
BE (1) BE466321A (en(2012))
DE (1) DE813520C (en(2012))
FR (1) FR933423A (en(2012))
GB (1) GB552927A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689382A (en) * 1949-03-19 1954-09-21 Bachmann Uxbridge Worsted Corp Vertical apron drafter
DE1123603B (de) * 1957-06-29 1962-02-08 Rieter Joh Jacob & Cie Ag Zweiriemchen-Streckwerk fuer Spinnmaschinen mit Unterriemchen-Umlenkbruecke

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689382A (en) * 1949-03-19 1954-09-21 Bachmann Uxbridge Worsted Corp Vertical apron drafter
DE1123603B (de) * 1957-06-29 1962-02-08 Rieter Joh Jacob & Cie Ag Zweiriemchen-Streckwerk fuer Spinnmaschinen mit Unterriemchen-Umlenkbruecke

Also Published As

Publication number Publication date
BE466321A (en(2012)) 1946-07-31
GB552927A (en(2012)) 1943-04-30
FR933423A (fr) 1948-04-20
DE813520C (de) 1951-09-13

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