US2249664A - Production of staple fiber - Google Patents
Production of staple fiber Download PDFInfo
- Publication number
- US2249664A US2249664A US369656A US36965640A US2249664A US 2249664 A US2249664 A US 2249664A US 369656 A US369656 A US 369656A US 36965640 A US36965640 A US 36965640A US 2249664 A US2249664 A US 2249664A
- Authority
- US
- United States
- Prior art keywords
- rollers
- tow
- ridges
- roller
- nip
- 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
Links
Images
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
- D01G1/02—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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
- Y10T83/4824—With means to cause progressive transverse cutting
- Y10T83/4827—With helical cutter blade
Definitions
- This invention relates to the manufacture and production of staple fiber from a band, rope,
- a tow of continuous threads, filaments or the like obtained from viscose.
- a tow of continuous filaments is converted into an even, coherent and draftable sliver of cut filaments of equal length by passing the tow of continuous filaments between the cylindrical surfaces of two hardened, non-resilient, rigidly mounted rollers, the distance between the said surfaces ofthe rollers in the nip being only a small fraction of the thickness of the loose tow of filaments so that the tow is highly compressed and gripped over an appreciable length in the nip, confining the compressed tow within a limited space in I the nip by means of guides and progressing the tow between the rollers by rotating them at substantially equal peripheral speeds, whereupon the continuous filaments are cut into equal lengths by helical cutting ridges arranged on one of the rollers at an angle of from to 1'5 to a plane perpendicular to the axis of the roller and of such depth that they touch the surface of the other roller in the nip.
- Each ridge is V-shaped, the tip of the V being ground so as to form a flat surface.
- the ridges are preferably provided on the upper roller.
- the filaments are cut into lengths equal to the distance between adjacent ridges measured round the circumference of the roller.
- the rollers are made of hardened steel and driven by suitable gearing.
- Guides are provided for confining the compressed tow within a limited space in the nip between the two rollers. If a number of tows.
- the tow may be passed side by side through the same pair of cutting rollers, two such guides are used one at each end of the nip at the outer side of the two outermost tows.
- further guides are provided to confine each tow separately, the said confining guides taking the form of circumferential ridges on one of the rollers.
- Each ridge is made of such dimensions that it fits closel into a corresponding slot in the other roller.
- other guiding members such as a row of pegs or a perforated bar, will be necessary immediatelybefore the nip of the cutting rollers for guiding the tow or tows in such a manner that their constituent filaments are not nipped between the aforesaid ridges and slots.
- the tow Before reaching the cutting ridges the tow may be passed between other pairs of rollers or under or over single rollers in order Germany January 3, 194
- Each tow'of continuous filaments is highly compressed and confined between the two rollers and the guiding members at the moment of bein cut and this coupled with the angle of the helical cutting ridges prevents the tow and single filaments thereof from being pushed sideways by the sides of the cutting ridges and enables a draftable sliver of cut filaments of equal length to be obtained.
- Figure 1 is a side view in section of the apparatus.
- FIG 2 an end view showing the arrangement of the cutting rollers
- 1 Figure 3 is a similar view showing confining guides and corresponding slots on the rollers.
- a tow of continuous filaments l for example of about 200,000 denier, is led through a guide 2 and tension rollers 3 to a pair of hard steel rollers 4 and 5, mounted on axles 6 and I respectively in a frame work 8.
- the upper roller 4 is provided with a numberof parallel helical ridges 9 which touch the smooth surface .of the lower roller 5 in the nip between the rollers.
- the ridges are of such depth that the distance between the cylindrical surfaces of the two rollers is about 0.06 of an inch, whereas the diameter of the tow i as it is delivered under tension is about 0.37 of an inch.
- the said ridges are V-shaped in section and slightly flattened at the tip and lie at an angle of 10 to a plane perpendicular tothe axis of the roller 4.
- the rollers are driven at substantiallyequal peripheral speeds in opposite directions by gear wheels IS.
- the rollers I are driven at a peripheral speed 'less than that of the rollers 4 and I, so that the tow I is under tension between the rollers '3 and the cutting rollers.
- the arrangement shown in Figure 3 is capable of cutting six separate tows.
- the lower roller 5 is provided with seven parallel circumferential ridges II which fit into corresponding circumferential slots I on the other roller 4.
- a guiding member consisting of a row of pegs i'l.
- Each tow is passed through the space between two pegs.
- Each of the said spaces is narrower than the distance between adjacent ridges ll, so that none of the filaments of the tows is allowed to enter the slots it.
- the tow of staple fiber ii is much flatter as it leaves the nip between the rollers 4 and 5 than the tow of continuous filaments i. It is removed from the lower roller 5 by means of a tunnel i2 provided with an acute angled edge l3 fitted against the roller 5. From this funnel l2 the tow is led away by means of a conveyor belt Hi to further treatment.
- Apparatus for the production of an even, coherent and draftable sliver of cut filaments of equal length which comprises two hardened, nonresilient rigidly mounted rollers one of which has a smooth surface and the other a number of helical V-shaped cutting ridges arranged at an angle of between 5 and 15 to a plane perpendicular to the axis of the roller, the two rollers being so disposed that the said ridges touch the surface of the other roller in the nip and circumferential ridges on one roller fitting into corresponding circumferential slots on the other roller and means for guiding each tow within the limited space in the nip between adjacent circumferential ridges.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
July 15, 1941. E. A. MORTON ET AL 2,249,664
' PRODUCTION OF STAPLE FIBER Filed Dec. 11, 1940 2 Sheets-Sheet 2 INVENTORS ERIC ANDREW MORTON HAROLD ASHTON AND WILUAM HARDACRE by 71/: dr er/rays Patented July 15, 1941 2,249,664 PRODUCTION OF STAPLE FIBER Eric Andrew Morton, Coventry, Harold Ashton,
Slattocks, Itochdale, and Bradley, near Keighley,
in England, allignors to Courtaulds Limited, London, England, a
British company Application December 11, 1940, Serial No. 369,058
In Great 1 Claim.
This invention relates to the manufacture and production of staple fiber from a band, rope,
bundle or tow, hereinafter referred to as a tow, of continuous threads, filaments or the like obtained from viscose.
According to the present invention a tow of continuous filaments is converted into an even, coherent and draftable sliver of cut filaments of equal length by passing the tow of continuous filaments between the cylindrical surfaces of two hardened, non-resilient, rigidly mounted rollers, the distance between the said surfaces ofthe rollers in the nip being only a small fraction of the thickness of the loose tow of filaments so that the tow is highly compressed and gripped over an appreciable length in the nip, confining the compressed tow within a limited space in I the nip by means of guides and progressing the tow between the rollers by rotating them at substantially equal peripheral speeds, whereupon the continuous filaments are cut into equal lengths by helical cutting ridges arranged on one of the rollers at an angle of from to 1'5 to a plane perpendicular to the axis of the roller and of such depth that they touch the surface of the other roller in the nip.
Each ridge is V-shaped, the tip of the V being ground so as to form a flat surface. The ridges are preferably provided on the upper roller. The filaments are cut into lengths equal to the distance between adjacent ridges measured round the circumference of the roller. The rollers are made of hardened steel and driven by suitable gearing.
Guides are provided for confining the compressed tow within a limited space in the nip between the two rollers. If a number of tows.
are passed side by side through the same pair of cutting rollers, two such guides are used one at each end of the nip at the outer side of the two outermost tows. ,In addition further guides are provided to confine each tow separately, the said confining guides taking the form of circumferential ridges on one of the rollers. Each ridge is made of such dimensions that it fits closel into a corresponding slot in the other roller. In addition to such ridges and slots other guiding members, such as a row of pegs or a perforated bar, will be necessary immediatelybefore the nip of the cutting rollers for guiding the tow or tows in such a manner that their constituent filaments are not nipped between the aforesaid ridges and slots. Before reaching the cutting ridges the tow may be passed between other pairs of rollers or under or over single rollers in order Britain January 3, 194
to give it any desired tension or thickness or to assist in gripping the tow firmly while cutting is taking place.
Each tow'of continuous filaments is highly compressed and confined between the two rollers and the guiding members at the moment of bein cut and this coupled with the angle of the helical cutting ridges prevents the tow and single filaments thereof from being pushed sideways by the sides of the cutting ridges and enables a draftable sliver of cut filaments of equal length to be obtained.
The accompanying diagrammatic drawings illustrate one arrangement of apparatus suitable for carrying out the present invention.
Figure 1 is a side view in section of the apparatus.
Figure 2, an end view showing the arrangement of the cutting rollers, and 1 Figure 3 is a similar view showing confining guides and corresponding slots on the rollers.
A tow of continuous filaments l, for example of about 200,000 denier, is led through a guide 2 and tension rollers 3 to a pair of hard steel rollers 4 and 5, mounted on axles 6 and I respectively in a frame work 8. The upper roller 4 is provided with a numberof parallel helical ridges 9 which touch the smooth surface .of the lower roller 5 in the nip between the rollers. The ridges are of such depth that the distance between the cylindrical surfaces of the two rollers is about 0.06 of an inch, whereas the diameter of the tow i as it is delivered under tension is about 0.37 of an inch. The said ridges are V-shaped in section and slightly flattened at the tip and lie at an angle of 10 to a plane perpendicular tothe axis of the roller 4. The rollers are driven at substantiallyequal peripheral speeds in opposite directions by gear wheels IS. The rollers I are driven at a peripheral speed 'less than that of the rollers 4 and I, so that the tow I is under tension between the rollers '3 and the cutting rollers. The arrangement shown in Figure 3 is capable of cutting six separate tows. The lower roller 5 is provided with seven parallel circumferential ridges II which fit into corresponding circumferential slots I on the other roller 4. Immediately before the nip of the cutting rollers l and 5,- a guiding member is placed consisting of a row of pegs i'l. Each tow is passed through the space between two pegs. Each of the said spaces is narrower than the distance between adjacent ridges ll, so that none of the filaments of the tows is allowed to enter the slots it. As each tow is prograssed through the nip it completely fills the box-like space surrounded by the cylindrical surfaces 4 and 5 and the ridges it on both sides of it, so that cutting of all the filaments is ensured. The tow of staple fiber ii is much flatter as it leaves the nip between the rollers 4 and 5 than the tow of continuous filaments i. It is removed from the lower roller 5 by means of a tunnel i2 provided with an acute angled edge l3 fitted against the roller 5. From this funnel l2 the tow is led away by means of a conveyor belt Hi to further treatment.
What we claim is:
Apparatus for the production of an even, coherent and draftable sliver of cut filaments of equal length which comprises two hardened, nonresilient rigidly mounted rollers one of which has a smooth surface and the other a number of helical V-shaped cutting ridges arranged at an angle of between 5 and 15 to a plane perpendicular to the axis of the roller, the two rollers being so disposed that the said ridges touch the surface of the other roller in the nip and circumferential ridges on one roller fitting into corresponding circumferential slots on the other roller and means for guiding each tow within the limited space in the nip between adjacent circumferential ridges.
ERIC ANDREW MORTON. HAROLD ASHTON. WILLIAM HARDACRE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2249664X | 1940-01-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2249664A true US2249664A (en) | 1941-07-15 |
Family
ID=10902234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US369656A Expired - Lifetime US2249664A (en) | 1940-01-03 | 1940-12-11 | Production of staple fiber |
Country Status (1)
Country | Link |
---|---|
US (1) | US2249664A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2890751A (en) * | 1954-04-08 | 1959-06-16 | Deering Milliken Res Corp | Continuous cutter |
US3050928A (en) * | 1959-08-18 | 1962-08-28 | Sumner Company Inc | Converting continuous filament to staple fiber |
US3209410A (en) * | 1962-09-24 | 1965-10-05 | Dow Chemical Co | Cutter roll for converter |
US3640279A (en) * | 1967-12-07 | 1972-02-08 | Warren F Brown | Skin graft cutting method and machine |
US7191690B2 (en) * | 2001-01-10 | 2007-03-20 | Heidelberger Druckmaschinen Ag | Helical mechanism cutting unit and method for operating for the same |
US20090035857A1 (en) * | 2007-08-03 | 2009-02-05 | Invitrogen Corporation | Cell culture processing devices and methods |
-
1940
- 1940-12-11 US US369656A patent/US2249664A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2890751A (en) * | 1954-04-08 | 1959-06-16 | Deering Milliken Res Corp | Continuous cutter |
US3050928A (en) * | 1959-08-18 | 1962-08-28 | Sumner Company Inc | Converting continuous filament to staple fiber |
US3209410A (en) * | 1962-09-24 | 1965-10-05 | Dow Chemical Co | Cutter roll for converter |
US3640279A (en) * | 1967-12-07 | 1972-02-08 | Warren F Brown | Skin graft cutting method and machine |
US7191690B2 (en) * | 2001-01-10 | 2007-03-20 | Heidelberger Druckmaschinen Ag | Helical mechanism cutting unit and method for operating for the same |
US20090035857A1 (en) * | 2007-08-03 | 2009-02-05 | Invitrogen Corporation | Cell culture processing devices and methods |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2221716A (en) | Manufacture and production of staple fiber | |
US4107909A (en) | Apparatus for spinning textile fibers | |
GB1275568A (en) | Process and apparatus for making spun threads from textile fibres | |
US2908133A (en) | False twister | |
GB1220390A (en) | Method and apparatus for spinning of fibrous materials utilizing a rotary spinning chamber | |
GB748434A (en) | Improvements in and relating to apparatus for processing filamentary tows | |
DE882066C (en) | Drafting system | |
US2249664A (en) | Production of staple fiber | |
US3708832A (en) | Method for leveling tow | |
US3636693A (en) | Method and apparatus for forming yarn | |
US2091153A (en) | Long draft apparatus and process for drawing textile rovings | |
US2234105A (en) | Manufacture and production of staple fiber | |
US3913176A (en) | Apparatus for the draft and breaking of synthetic textile fibres | |
US3345700A (en) | Apparatus for producing slivers | |
US3164047A (en) | Method of cutting filament tow and conveying the slivers away | |
US2294771A (en) | Staple fiber preparation | |
GB1081710A (en) | Method and apparatus for producing slivers from continuous filament tows | |
US2127410A (en) | Roving machine | |
US2030252A (en) | Manufacture of textile materials | |
DE1912452C3 (en) | Fleece removal device | |
US4347647A (en) | Apparatus for making no-twist yarn | |
GB562682A (en) | Improved method and means for doubling yarns | |
US3050928A (en) | Converting continuous filament to staple fiber | |
KR850000721B1 (en) | Device for condensing the fleece emerging from a carding engine | |
US2284635A (en) | Staple fiber preparation |