|Publication number||US2937413 A|
|Publication date||May 24, 1960|
|Filing date||Sep 27, 1956|
|Priority date||Sep 27, 1956|
|Publication number||US 2937413 A, US 2937413A, US-A-2937413, US2937413 A, US2937413A|
|Inventors||Hollingsworth John D|
|Original Assignee||Hollingsworth John D|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (53), Classifications (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
May 24, 1960 J. o. HOLLINGSWORTH 2,937,413
CARDING TOOTH Filed Sept. 27, 1956 2 Sheets-Sheet 1 FIEI. 3
J. D. HOLLINGSWORTH 2,937,413.
CARDING TOOTH May 24, 1960 Filed Sept. 27, 1956 2 Sheets-Sheet 2 FIG. 7. v Fl [5.5.
A? T I lllllllmnumm INVENTOR'. JOHN D. HOLLINGSW ORTH A TTYS- CARDING TOOTH John D. Hollingsworth, P.0. Box 516, Greenville, S.C. Filed Sept. 27, 1956, Ser. No. 612,514
'2 Claims. (Cl. 19-114) This invention relates to teeth used in carding, gametting and similar working of natural and synthetic fibers.
Prior to this invention, such teeth have been made with the front or working edges thereof at various angles to the direction of tooth movement. In some instances, the said front or leading edges lean forwardly or in the direction of tooth movement. In other cases, the tooth edge leans backwardly; and in still other cases, the forward edge of the tooth is normal to the direction of movement. If the angle of lean is too great in the forward direction, there is a tendency for some staples to load on the tooth. If the angle of leaning is too great to the rear, less carding, garnetting, or working of the staple takes place. If the forward edge of the tooth is normal to the direction of tooth movement, too little carding will take place with some staples and with other staples the tooth will tend to load.
I have invented a tooth form which has the combined advantages of a tooth with a forwardly leaning working edge. and one having its leading edge leaning backwards but without the disadvantages of either of these forms of tooth. The tooth is superior functionally also to teeth whereof the leading or working edge is normal to the direction of carding movement. 7
The invention will be more readily understood by reference to the attached drawings wherein:
Fig. l is a side view of a fragment of tooth card wire showing in profile a tooth made in accordance'with the invention;
Fig. 2 is a sectional view on line 2-2, Fig. 1;
Fig. 3 is a fragmentary side view of a tooth card wire showing in profile a tooth constituting another embodiment of the invention;
Fig. 4 is a sectional view on the line 4-4, Fig. 3;
Fig. 5 is a fragmentary side view of a tooth card wire showing in profile a tooth constituting still another embodiment of the invention;
Fig. 6 is a sectional view on the line 6-6, Fig. 5;
Fig. 7 is a side view of a fragment of tooth card wire showing in profile a tooth constituting another embodiment of the invention;
Fig. 8 is a sectional view on the line 8--8, Fig. 7;
Fig. 9 is a side view of a fragment of tooth wire showing in profile a tooth constituting another embodiment of the invention, and
Fig. 10 is a sectional view on the line 10-10, Fig. 9.
With reference to Fig. 1 which shows in side elevation a section of toothed wire of a type used in metallic clothing for cards and the like, the leading edges 1 of the teeth from the base or gullet 2 leans away from the direction of wire movement (indicated by the arrow) at an angle of approximately five degrees. The rearwardly inclined edge section terminates short of the tip 3 of the tooth, the point of termination in the present instance being approximately .005" below the tip. From this point, indicated by the reference numeral 4, the angle of the leading edge of the tooth changes so that the UnitcdStates Pateiitb ce i 7 section of the edge between the points 3 and 4 has a forward inclinationof approximately five degrees with reference to theaforesaid direction of-movement. In this case, therefore, the major portion of the leading or working edge of the tooth from its base comprises an edge section having a negative angle with respect to the direction of movement whereasthe extreme outer endportion of the edge over a length of approximately .005" comprises an end section having a positive angle of approximately five degrees to said direction of movement. The result is a material reductionin tendency for theteeth to load" without material loss of carding capacity.
In respects other than the angular relations of the leading edge, the tooth form may be conventional. By reference to Fig. 2 it will be noted that the base portion 5 of the tooth is relatively thick-transversely-and tapers uniformly toward the blunt tip 3.
The principle of the invention may be embodied in other forms of tooth best adapted to the working of the various textile and other fibers. In the modified tooth of Figs. 3 and 4 for example, the leading edge of the tooth exhibits also a base section 6 of negative angle and an outer terminal section 7 of positive angle. The section 6, extending outwardly from the gullet 8 exhibits an angle, a, of approximately forty-five degrees. This section terminates approximately .046" from the tip 9 of the tooth at a point indicated by the reference numeral 10 and between this point and the tip the forward edge exhibits the positive'angle of approximately forty-five degrees. As shown in Fig. 4 the transverse or sectional form of the tooth is similar to that of the tooth shown in Fig. 1.
It will be apparentthat in this case the wedging action on the fibers of the base section 6 of the working edge of the tooth will be more pronounced and that the tip section 7 of the edge being both longer and describing a greater positive angle will be more positive in their carding action.
In the embodiment of Figures 5 and 6, the forward edge of the tooth exhibits a base section 11 of negative angularity approximately ten degrees and an outer edge section 12 which from the point 13 to the tip 14 exhibits two diiferent positive angles, The angularity immedi ately adjoining the point 13' is approximately ten degrees and this terminates at the midpoint 15 in an edge section of approximately twenty degrees. The two sections are of approximately the same length namely .01". The cross sectional form of the tooth is shown in Fig. 6 and is substantially the same as those of the teeth previously described.
Figures 7 and 8 show a tooth form according to the invention which exhibits the typical leading edge 16 having sections of both negative and positive angularity, said edge being generated by a radius of indicated length drawn in the present instance from a center 17 between the tip 18 of the tooth and the gullet 19. The edge describes a negative angle in its base section which gradually changes along the arc of the curve to a positive angle in the section toward the working tip 18.
In the embodiment of Figures 9 and 10 the leading edge 20 lacks a section having positive angularity. The edge is concave throughout but since the center of curvature 21 lies at the tooth tip level the tip sect-ion of the edge is approximately normal to the direction of tooth movement. In effect, the edge 20 has combined a section of negative angularity and a section of normal angularity.
It will be apparent that a tooth according to the invention can be made to assume a variety of profile configurations and that the invention is not limited to the specific embodiments shown.
I claim: 7
1. Metallic, card clothing comprising a continuous card wire formed into a plurality of substantially rigid teeth separated by gullets, each of said teeth having a leading edge extending from the. adjacent gullet substantially to the tip-of the tooth, one section of said leading edge of each tooth adjacentsaid gullet being rectilinear and having negative angularity and the other section of said leading edge of each tooth adjacent the tip thereof being rectilinear and having positive angularity, said one section of. the leading edge being of substantially greater lengththanthe other section thereof and constituting the major portion of the leading edge of the tooth, and said other section of the leading edge comprisingtthe remaining portion of the length thereof.
2; Metallic cardclothing as claimed in claim 1 where- '4 in the negative and positive angularity of the respective rectilinear sections of the leading edge of each tooth is at least approximately five degrees.
References Cited in the file of this patent UNITED STATES PATENTS 795,946 Thielrnann Aug. 1, 1905 1,811,549 Langer June 23, 1931 FOREIGN PATENTS 2,001 Great Britain of 1870 17,982 Great Britain of 1914 24,245 Great Britain of 1896 499,210 Great Britain Jan. 16, 1939 12,982 Germany Mar. 10, 1881 47,701 Austria May 10, 1911
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US795946 *||Sep 30, 1903||Aug 1, 1905||Ewald Thielmann||Card-clothing for fancy-rollers of carding-machines.|
|US1811549 *||Jun 26, 1930||Jun 23, 1931||Eduard Langer||Rag grinding machine|
|AT47701B *||Title not available|
|*||DE12982C||Title not available|
|GB499210A *||Title not available|
|GB187002001A *||Title not available|
|GB189624245A *||Title not available|
|GB191417982A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3175251 *||Jul 11, 1962||Mar 30, 1965||Whitin Machine Works||Method for making the effective height of the teeth in a card clothing uniform|
|US3387338 *||Jun 3, 1965||Jun 11, 1968||Hiroyuki Kanai||Metallic card clothing|
|US4221022 *||Apr 9, 1979||Sep 9, 1980||Howa Kogyo Kabushiki Kaisha||Apparatus for stripping the carded web from the doffer cylinder of the textile carding machine|
|US4233711 *||Sep 6, 1978||Nov 18, 1980||Hollingsworth John D||Metallic card clothing|
|US4398318 *||Apr 30, 1981||Aug 16, 1983||Ashworth Bros., Inc.||Card clothing for carding machine elements|
|US4625367 *||Oct 10, 1985||Dec 2, 1986||Sole Leris Roger||Rigid clothing for card flats|
|US4646389 *||Jan 22, 1986||Mar 3, 1987||Fritz Stahlecker||Fitting for opening rollers|
|US4651387 *||Apr 2, 1985||Mar 24, 1987||Marcello Giuliani||Carding machine provided with self-cleaning blade or reed elements|
|US4854012 *||Mar 28, 1988||Aug 8, 1989||Graf & Cie Ag||Saw tooth wire of a saw tooth-card clothing for a textile machine producing randomly oriented fibre fleeces|
|US4953264 *||Jun 20, 1988||Sep 4, 1990||John D. Hollingsworth On Wheels, Inc.||Metallic wire used with textile fiber processing elements, in particular, with cleaning rollers|
|US5547709 *||Jul 28, 1994||Aug 20, 1996||Elektroschmelzwerk Kempten Gmbh||Surface treatment of opening rollers for open end spinning|
|US5581848 *||Sep 19, 1995||Dec 10, 1996||Staedtler & Uhl||Saw tooth fittings|
|US5694759 *||Dec 5, 1996||Dec 9, 1997||Waverly Mills, Inc.||Process for producing polyester yarns on an open end spinning machine and yarns thus produced|
|US5699659 *||Mar 8, 1996||Dec 23, 1997||Waverly Mills, Inc.||Process for producing substantially all-polyester yarns from fine denier feed fibers on an open end spinning machine|
|US5755012 *||Mar 3, 1997||May 26, 1998||Hollingsworth; John D.||Metallic clothing for carding segments and flats|
|US5775086 *||Feb 11, 1997||Jul 7, 1998||Fritz Stahlecker||Device for opening fiber material into single fibers|
|US5891523 *||Aug 9, 1993||Apr 6, 1999||Surface Technology, Inc.||Method for manufacturing metallized heat treated precision articles|
|US5898978 *||May 26, 1998||May 4, 1999||John D. Hollingsworth On Wheels, Inc.||Metallic clothing for carding segments and flats|
|US6185789||May 4, 1999||Feb 13, 2001||John D. Hollingsworth On Wheels, Inc.||Metallic clothing for carding elements|
|US6190594||Mar 1, 1999||Feb 20, 2001||3M Innovative Properties Company||Tooling for articles with structured surfaces|
|US6408487 *||Oct 28, 1999||Jun 25, 2002||Commonwealth Scientific And Industrial Research Organisation||Card wire, especially for doffers and workers|
|US6475565||Oct 26, 2000||Nov 5, 2002||Elektroschmelzwerk Kempten Gmbh||Process for producing a clothing wire for open-end spinning|
|US6584651 *||May 1, 2001||Jul 1, 2003||Trutzschler Gmbh Co. Kg||Device for increasing the specific weight of fiber material in a carding machine|
|US6874203 *||Mar 8, 2002||Apr 5, 2005||Trützschler Card Clothing GmbH||Saw-tooth wire for a set of rollers|
|US6902389||May 14, 2003||Jun 7, 2005||3M Innovative Properties Company||Wire wound tooling|
|US6920671 *||Oct 8, 2003||Jul 26, 2005||Graf + Cie Ag||Sawtooth wire|
|US7052639||Apr 8, 2005||May 30, 2006||3M Innovative Properties Company||Wire wound tooling|
|US7313908 *||Nov 10, 2005||Jan 1, 2008||Rieter Ingolstadt Spinnereimaschinenbau Ag||Disintegrator with improved contour|
|US8590110 *||Apr 9, 2012||Nov 26, 2013||Graf + Cie Ag||Saw-tooth clothing for a textile machine|
|US8789244 *||Jul 11, 2011||Jul 29, 2014||Nv Bekaert Sa||Wire profile for card clothing|
|US9145625 *||Sep 7, 2012||Sep 29, 2015||Groz-Beckert Kg||Card wire with improved tooth shape|
|US20030116006 *||Feb 13, 2003||Jun 26, 2003||Graf Ralph A.||Sawtooth wire|
|US20040128800 *||Oct 8, 2003||Jul 8, 2004||Graf Ralph A.||Sawtooth wire|
|US20040154137 *||Mar 8, 2002||Aug 12, 2004||Axel Bauersachs||Saw-tooth wire for a set of rollers|
|US20040229739 *||May 14, 2003||Nov 18, 2004||3M Innovative Properties Company||Wire wound tooling|
|US20050181179 *||Apr 8, 2005||Aug 18, 2005||3M Innovative Properties Company||Wire wound tooling|
|US20060186240 *||Nov 10, 2005||Aug 24, 2006||Rieter Ingolstadt Spinnereimaschinenbau Ag||Disintegrator with improved contour|
|US20060188599 *||Apr 10, 2006||Aug 24, 2006||3M Innovative Properties Company||Wire wound tooling|
|US20120255143 *||Apr 9, 2012||Oct 11, 2012||Graf + Cie Ag||Saw-Tooth Clothing|
|US20130133159 *||Jul 11, 2011||May 30, 2013||Bekaert Carding Solution Nv||Wire profile for card clothing|
|US20140259537 *||Oct 5, 2012||Sep 18, 2014||Nv Bekaert Sa||Metallic card wire|
|US20140338154 *||Sep 7, 2012||Nov 20, 2014||Bekaert Carding Solutions Nv||Card wire with improved tooth shape|
|US20150211153 *||Feb 4, 2013||Jul 30, 2015||Nv Bekaert Sa||Metal fibre web based filter|
|CN103890252A *||Sep 7, 2012||Jun 25, 2014||贝卡尔特公司||Card wire with improved tooth shape|
|DE3439664A1 *||Oct 30, 1984||Apr 30, 1986||Fritz Stahlecker||Opening roller for an opening device of an open-end spinning machine|
|DE3501876A1 *||Jan 22, 1985||Jul 24, 1986||Fritz Stahlecker||Garnitur fuer eine aufloesewalze|
|DE3723872A1 *||Jul 18, 1987||Feb 2, 1989||Hollingsworth Gmbh||Reinigungsgarnitur fuer textilfasern bearbeitende elemente, insbesondere reinigungswalzen|
|DE19951775C1 *||Oct 27, 1999||Jan 11, 2001||Kempten Elektroschmelz Gmbh||Preparing card wire for fitting to opening rollers involves surface treating wire in the form of a coil of diameter similar to roller|
|DE102004054653A1 *||Nov 11, 2004||May 18, 2006||Rieter Ingolstadt Spinnereimaschinenbau Ag||Auflöseeinrichung mit verbesserter Kontur|
|EP0138778A2 *||Oct 5, 1984||Apr 24, 1985||Marcello Giuliani||Carding-rod carding machine, for carding fibers in general, provided with self-cleaning blade or reed elements|
|EP0453436A2 *||Apr 11, 1991||Oct 23, 1991||Hans-Peter Leitinger||Cutting device for a band saw|
|EP1657328A2 *||Nov 4, 2005||May 17, 2006||Rieter Ingolstadt Spinnereimaschinenbau Aktiengesellschaft||Fibre-opening unit having teeth with improved contour|
|WO1989000619A1 *||Jul 13, 1988||Jan 26, 1989||Hollingsworth Gmbh||Fitting for cleaning textile fibre processing elements in particular cleaning rolls|
|International Classification||B23D61/00, D01G15/88, D01G15/00, B23D61/12|
|Cooperative Classification||B23D61/121, D01G15/88|
|European Classification||D01G15/88, B23D61/12B|