US2149197A - Manufacture and production of staple fiber - Google Patents

Manufacture and production of staple fiber Download PDF

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Publication number
US2149197A
US2149197A US121028A US12102837A US2149197A US 2149197 A US2149197 A US 2149197A US 121028 A US121028 A US 121028A US 12102837 A US12102837 A US 12102837A US 2149197 A US2149197 A US 2149197A
Authority
US
United States
Prior art keywords
tube
thread
manufacture
production
staple fiber
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
US121028A
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English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 by Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US2149197A publication Critical patent/US2149197A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/913—Filament to staple fiber cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/2068—Plural blasts directed against plural product pieces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6472—By fluid current

Definitions

  • This invention relates to a new and improved process and apparatus for cutting into short lengths a continuous filament or bundle of filaments which will hereinafter be referred to as a thread.
  • one or more threads are led along a narrow tube or conduit hereinafter referred to as a tube, which is provided from the beginning to the end thereof with a narrow slot, while at the end is situated a rotating cutter which cuts the thread into short lengths.
  • the thread shortly before it enters the tube passes over one or more positively driven rollers, which impart to it a constant speed of travel.
  • the passage of the thread through the tube is assisted by means of a fluid current, as for example of air or Water, led into the tube and preferably introduced in two or more portions.
  • These currents of fluid may conveniently be introduced into the tube at some distance from the beginning thereof, for example two thirds of the length in the case of air and a third of the length in the case of water, so that the fluid and the thread travel together for part of the length of the tube.
  • the currents of fluid are also preferably led into the tube at an angle approximating to the direction of flow subsequently desired in the tube.
  • the rotary cutter may conveniently comprise three blades which press against the end surface of the tube and cut the thread as it emerges.
  • the narrow slot along the length of the tube enables the thread to be introduced easily when starting up the process.
  • the process and apparatus according to this invention are particularly useful for cutting a dry continuous thread, such for example as a cellulose acetate thread, when the thread emerging from the spinning cell is first wound on to an intermediate roller or waste roller.
  • a loop of the thread may be drawn out, for example by running it round a finger, and one part of the travelling loop led in a direction parallel with the tube through the slot into the interior of the tube.
  • the loop is immediately cut by one of the knife blades, and the receding part of the loop is wound up on the roller, while the oncoming thread is blow forward by the current of gas down the tube so that it is continually fed towards the cutting blades.
  • the cut filaments may conveniently be conveyed along a broader tube commencing immediately below the cutter, a current of gas being introduced into this broader tube in order to cause the filaments to move along it. It is also convenient to impart to this lower tube a slight bend at a short distance from the rotating cutter, and to provide the tube as far as the bend with a slot which is in a line with the slot of the narrow tube down which the thread passes to the cutter.
  • the slot in the broader tube also assists in the introduction of the thread when starting the process.
  • the further end of the broader tube may lead into a 'bag or cage or other device suitable for collecting the cut filaments.
  • two or more narrow tubes each provided with a slot, may be employed side by side, and a thread passed along each such tube, so that the rotating blade cuts these threads consecutively.
  • This arrangement presents certain advantages, since it is easier for the blade to cut several thinner threads consecutively than one thicker thread.
  • Figure 1 is a side view on a small scale showing how the thread is led from the delivery device through the cutter to the broad tube
  • Figure 2 is an elevation of the cutter
  • Figure 3 is a view of the cutter from the underside
  • Figure 4 is an enlarged section of the thread channel taken across the line X--X of Figure 2
  • Figure 5 is an enlarged section taken across the line YY of Figure 1.
  • the thread M which has been produced by a dry spinning process is introduced by means of the wheel N at a constant rate into the thread channel A through the narrow slot B into the tube C.
  • a current of air is introduced through a pipe J into a. receiving slot which directs it through two perpendicular channels K into two grooves L leading at an angle into the tube C.
  • ' plate E is of circular cross section.
  • the tube C is composed of two portions, the upper and longer portion being rectangular in shape while the lower portion D contained in the base
  • the current of air carries the thread down the tube C through the hole D in the base plate E against which press the three blades G, of the rotating cutter F.
  • the cutter is driven by a bevel wheel drive H by means of a pulley P.
  • the cut thread then passes into the broader tube Q and is led away to a bag or other collecting device, its motion being preferably assisted by means of a current of air introduced through the pipe R.
  • the tube Q is provided for a short distance from commencement thereto with a slot S and two cheeks T are provided to enable the running loop of the thread to be led into its position in the tube C at the commencement of the run.
  • Apparatus for use in the manufacture and production of staple fiber comprising a tube provided along its whole length with a narrow slot through which a bundle of continuous filaments is introduced into the tube, a rotary cutter, the
  • a broader tube provided with a longitudinal slot for at least a part of its length, the end of the said tube being situated in close proximity to the rotary cutter, so that the thread, after having been cut passes along the said broader tube LIOYDS BANK LIMITED.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US121028A 1936-01-17 1937-01-16 Manufacture and production of staple fiber Expired - Lifetime US2149197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1595/36A GB469441A (en) 1936-01-17 1936-01-17 Improvements in and relating to the manufacture and production of staple fibre

Publications (1)

Publication Number Publication Date
US2149197A true US2149197A (en) 1939-02-28

Family

ID=9724671

Family Applications (1)

Application Number Title Priority Date Filing Date
US121028A Expired - Lifetime US2149197A (en) 1936-01-17 1937-01-16 Manufacture and production of staple fiber

Country Status (4)

Country Link
US (1) US2149197A (enrdf_load_stackoverflow)
FR (1) FR815982A (enrdf_load_stackoverflow)
GB (1) GB469441A (enrdf_load_stackoverflow)
NL (1) NL44915C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841184A (en) * 1971-11-30 1974-10-15 Fibreglass Ltd Treatment of glass fibres

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841184A (en) * 1971-11-30 1974-10-15 Fibreglass Ltd Treatment of glass fibres

Also Published As

Publication number Publication date
FR815982A (fr) 1937-07-27
GB469441A (en) 1937-07-19
NL44915C (enrdf_load_stackoverflow) 1900-01-01

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