Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2173789 A
Publication typeGrant
Publication dateSep 19, 1939
Filing dateDec 1, 1936
Priority dateDec 5, 1935
Publication numberUS 2173789 A, US 2173789A, US-A-2173789, US2173789 A, US2173789A
InventorsNikles Paul, Wiskemann Franz
Original AssigneeNikles Paul, Wiskemann Franz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of producing stapled fibers
US 2173789 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 19, 1939.

' P. NIKLES El AL IETHOD OF PRODUCING STAPLED FIBERS Filed Dec. 1, 1936 Patented Sept. 19, 1939 UNITED sTATEs PATENT f OFFICE METHOD OF PRODUCING STAPLED' FIBERS Paul Nikles, Collombey, and

Franz Wiskemann,

Zurich, Switzerland Application December 1, 1936, Serial In Switzerland December 5, 1935 2 Claims. (01. 19-1) It is known, to heap artificial silk at the spinning machine into Bundles and to pass on the fibers in the form of strands, the fully treated.

strand being cut into pieces either before or after the drying. The stapled fibers resulting from this method are too stiff and straight, so thatartificially curlingthe fibers obtained is necessary in every case.

The object of the present invention is to provide a method and apparatus by means of which the severing of the fibrous strands arriving from of any desired lengths ing the product obtained. v

The method according to the present invention provides for directing one or more fluid jets onto the fibrous strand prior to the latter contacting with a cutting appliance, in such a way, that the fibrous strand is imparted a turning effeet by means of which the individual fibers are twisted in the manner of a rope as tightly as permissible.

Experience has shown that a fiber bunch of this kind can be cut more neatly and quickly.

The fluid jet for carrying out the method consists, preferably, of spinning bath solution as such but, if desired, plain water may also be used for this purpose.

It is essential that the amount of twist imparted to the fiber bunch can be controlled at will by varying the direction and volume of the fiuid jet.

A further feature of the novel method consists in setting up a certain amount of internal tension in the individual fibers prior to severing the same by action of the turning efiect provided. Experience has proven that artificial fibers which prior to being out were imparted a certain internal tension by action of this efiect curl up much more readily and adequately during the after-treatment process. Practical tests in this respect have further shown that this desired effect obtains only where there is possibility of regulating the turning movement of the fiber bunch to some extent prior to cutting the same,-

" ple only, in which Still another feature of the novel method consists in the fact that the fibrou strand to be separated is so guided by The fibrous strand is intended to be acted upon by the cutting blade in a relative position thereto in evading the blade.

a further. possible mode of carrying out the methodaccording to the so varied that either the fluid jet for imparting to the fibers the required twist acts at the same time to guide the fiber bunch onto the cutting, appliance, or that two separate fluid jets are provided. In the latter parts to the fibers the twisting movement, while the second jet acts to direct the fibrous strand towards the cutting appliance. Alternatively, the method according to the invention may consist in that by increasing or decreasing the efiiciency of the fluid jet the feed motion of the fibrous strand relative to the cutting appliance is maintained and regulated respectively, so that shorter or longer lengths of staple are obtained.

In other words the fiber bunch to be out can thus be conducted towards the cutting appliance at a regular feed rate and in stiff condition withoutthe necessity of employing a special mechanical contrivance for this purpose. Y

If for carrying out the method spinning bath liquid is used as operating fluid, all the artificial fibers then come into very close contact with the coagulating bath once more prior to the cutting-which fact may be of advantage in various respects.

In the accompanying drawing two forms of treating devices for carrying out the method according to the invention together with modifications of details are shown by way' of exam- Fig. l shows an elevation partly in section of a first form of the treating device;

event one of the jets im- Fig. 2 shows a side elevation of Fig. 1;

Fig. 3 shows a horizontal section through the fluid admission chamber of Fig. 1;

Fig. 4 shows an elevation partly in section of a second form of the treating device;

Fig. 5 is a view of a modified cutting applianc and Fig. 6 is a view similar to Fig. 5 of a further modification of the cutting appliance.

The fibrous material C to be cut in appropriate lengths arrives inthe'form of a band from a 'sizing device A to pass about a guide roller B into the feed funnel of a treating apparatus D. In the fluid admission chamber F surrounding the inner end of the feed funnel and connecting laterally with a fluid supply conduit E, the fibrous material emanating from the feed funnel is imparted a required twisting effect by the stream or jet of operating fluid passing through the chamber F in the direction of the arrows shown in Figs. 1 and 3. The distance between the guide roller B and the outer end of the feed funnel of the treating apparatus Dis regulable by means not shown and is so chosen that a predetermined amount of twist is imparted to the strand of fibers treated by means of the method according to the invention under the circumstances prevailing in every practical case.

Incidental to the fibrous material leaving the treating apparatus at the exit it moves past rotatable cutters H which cut the material in timed relation with its feed movement in the required length of fiber.

In Fig. 2 it is evident that. the twisting operation applied to the fibrous material is eifective rearwardly beyond the feed funnel of the treating apparatus, as indicated by tapering the band of material C between the guide roller B and the feed funnel.

Fig. 4 shows a second form of treating apparatus which operates on the same general principle as the preceding one except that an additional fluid jet is applied which is supplied by a conduit I connecting with the casing of the apparatus transversely and merging gradually with the direction of passage of the material through the treating device. In this way is obtained that the strand of fibers is led through the exit nozzleof the treating device either in eccentric or concentric relation thereto for passing it on to the cutting appliance in stiff condi- In the Figs. 5 and 6 two difierent modifications of. the cutting appliance are shown.

What we claim is:

1. A method of producing stapled fibers, comprising feeding .a strand of spun artificial filaments to be cut in appropriate lengths-of staple fiber, directing two fluid jets onto said moving strand, one of said jets being directed rotationally thereby imparting a turning efiect to said strand, controlling said turning effect for twisting the individual filaments of said strand in the manner of a twisted rope as tightly as permissible, and cutting the twisted rope into appropriate lengths of staple fiber in timed relation with its feed movement while guided by said jets, said second jet longitudinally surrounding said twisted portion of the rope to steady said portion While being cut.

2. A method ofproducing stapled fibers, comprising directing two fluid jets onto a moving strand of spun filaments to be cut in appropriate lengths of staple fiber, one of said jets being rotationally directed to impart a turning effect on said strand, controlling said turning effect for twisting the individual filaments of said strand in the manner of a twisted rope as tightly as permissible, cutting said twisted rope in timed relation with its movement while said second jet is directed longitudinally. of the rope and surrounds the twisted portion of the rope for steadying said portion during the cutting.

PAUL NIKLES. FRANZ WISKEMANN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2418125 *Aug 13, 1941Apr 1, 1947American Viscose CorpMethod and apparatus for producing crimped staple fibers
US2437264 *Sep 18, 1944Mar 9, 1948Fred W ManningMagazine spinning gun for the production of filaments and fabrics
US2446097 *May 24, 1944Jul 27, 1948American Viscose CorpCutting apparatus
US2515299 *Oct 19, 1948Jul 18, 1950Us Rubber CoApparatus for imparting false twist to strands
US2541181 *Dec 5, 1945Feb 13, 1951American Viscose CorpStaple fiber
US2621391 *Oct 20, 1949Dec 16, 1952Du PontYarn feeding and tensioning device and process
US2694448 *Sep 17, 1952Nov 16, 1954Celanese CorpTextile apparatus
US2753000 *Dec 23, 1952Jul 3, 1956Maurer Sa Ing AApparatus for cutting filaments and the like
US2763323 *Dec 20, 1951Sep 18, 1956Lingen KarlheinzApparatus for cutting a thread end from a spool
US2768688 *Aug 26, 1953Oct 30, 1956Turner Machine Co IncApparatus for cutting a roving of fibrous material
US2783609 *Dec 14, 1951Mar 5, 1957Du PontBulky continuous filament yarn
US2853847 *May 8, 1957Sep 30, 1958KeelerMethod of and apparatus for intertwining fibers to form roving or yarn
US2860373 *Jul 29, 1952Nov 18, 1958Du PontFilament guide
US2880457 *May 12, 1955Apr 7, 1959Schuller WernerApparatus for drawing fine threads of fibers of glass or the like
US2919970 *May 9, 1955Jan 5, 1960Owens Corning Fiberglass CorpMethod for attenuating and treating glass fibers
US2944381 *May 27, 1955Jul 12, 1960Lawrence M KeelerApparatus for use in assembling and intertwining discrete fibers
US2974554 *Jan 3, 1955Mar 14, 1961Bayer AgMethod of and apparatus for cutting staple lengths of cables of artificial threads
US2982000 *Jul 19, 1956May 2, 1961Du PontApparatus for bulking yarn
US3002880 *Nov 12, 1958Oct 3, 1961American Enka CorpManufacture of paper
US3009309 *Jul 16, 1956Nov 21, 1961Du PontFluid jet twist crimping process
US3144187 *Mar 1, 1962Aug 11, 1964American Cyanamid CoThread conveyor
US3150552 *Feb 8, 1962Sep 29, 1964American Enka CorpApparatus for producing staple fibers
US3173683 *Sep 27, 1962Mar 16, 1965Headley Townsend BackhouseSheet feeding machines
US3279164 *May 4, 1959Oct 18, 1966Du PontFluid jet process for twisting yarn
US3488674 *May 23, 1968Jan 6, 1970Gen Res IncApparatus for operating on a normally limp surface,particularly on the edge of an envelope
US3951321 *Sep 25, 1974Apr 20, 1976Zellweger, Ltd.Method of, apparatus for, transporting yarns through measuring units
US4104765 *May 31, 1977Aug 8, 1978Leigh Textile CompanyCutting hard fibrous material
US5226336 *Oct 17, 1991Jul 13, 1993American Cyanamid CompanyApparatus for manufacturing a surgical suture
US5450777 *Dec 3, 1991Sep 19, 1995Nordson CorporationMethod and apparatus for processing chopped fibers from continuous tows
US5726422 *May 10, 1996Mar 10, 1998Ethicon, Inc.Apparatus with moving clamp for making surgical sutures, and method for using same
US5792181 *May 10, 1996Aug 11, 1998Ethicon, Inc.Surgical suture having a thermally formed tip, and apparatus and method for making same
US5813303 *May 10, 1996Sep 29, 1998Ethicon, Inc.Apparatus for cutting a surgical suture at two locations
US5855156 *May 10, 1996Jan 5, 1999Ethicon, Inc.Apparatus for cutting a surgical suture tip
US5891166 *Oct 30, 1996Apr 6, 1999Ethicon, Inc.Surgical suture having an ultrasonically formed tip, and apparatus and method for making same
US5975876 *May 10, 1996Nov 2, 1999Ethicon, Inc.Combined apparatus for heating and cutting a surgical suture tip
US6001121 *Apr 14, 1998Dec 14, 1999Ethicon, Inc.Surgical suture having a thermally formed tip, and apparatus and method for making same
US6032844 *Jul 31, 1997Mar 7, 2000E. I. Du Pont De Nemours And CompanyAir jet piddling
US6035751 *Apr 28, 1998Mar 14, 2000Ethicon, Inc.Method for cutting a surgical suture at two locations
US6035916 *Mar 26, 1999Mar 14, 2000Ethicon, Inc.Surgical suture having an ultrasonically formed tip, and apparatus method for making same
US6126676 *May 4, 1999Oct 3, 2000Ethicon, Inc.Surgical tipping apparatus
US6131785 *Aug 27, 1998Oct 17, 2000E. I. Du Pont De Nemours And CompanyAir jet piddling
US6306157May 30, 2000Oct 23, 2001Ethicon, Inc.Surgical tipping apparatus
US6619834 *Jan 29, 2001Sep 16, 2003Krauss-Maffei Kunststofftechnik GmbhDevice for producing a mixture from chemically reactive plastic components and permeated with reinforcement fibers
US6730111Aug 14, 2001May 4, 2004Semyon ShchervinskySurgical tipping apparatus
US7578221 *Jun 3, 2003Aug 25, 2009John G. S. BillingsleyMethod and apparatus for adjustable cutting of a filamentary material
EP2351880A2Apr 2, 2007Aug 3, 2011Schmidt & Heinzmann GmbH & Co. KGConverter
WO2008025382A1 *Apr 2, 2007Mar 6, 2008Schmidt & Heinzmann Gmbh & CoRotating-nozzle converter
Classifications
U.S. Classification19/.46, 19/.56, 226/7, 83/22, 57/2, 83/913, 83/402, 28/252, 226/97.4, 242/157.00R
International ClassificationD01G1/04
Cooperative ClassificationY10S83/913, D01G1/04
European ClassificationD01G1/04