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Publication numberUS2937413 A
Publication typeGrant
Publication dateMay 24, 1960
Filing dateSep 27, 1956
Priority dateSep 27, 1956
Publication numberUS 2937413 A, US 2937413A, US-A-2937413, US2937413 A, US2937413A
InventorsHollingsworth John D
Original AssigneeHollingsworth John D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Carding tooth
US 2937413 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

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

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US795946 *Sep 30, 1903Aug 1, 1905Ewald ThielmannCard-clothing for fancy-rollers of carding-machines.
US1811549 *Jun 26, 1930Jun 23, 1931Eduard LangerRag 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
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3175251 *Jul 11, 1962Mar 30, 1965Whitin Machine WorksMethod for making the effective height of the teeth in a card clothing uniform
US3387338 *Jun 3, 1965Jun 11, 1968Hiroyuki KanaiMetallic card clothing
US4221022 *Apr 9, 1979Sep 9, 1980Howa Kogyo Kabushiki KaishaApparatus for stripping the carded web from the doffer cylinder of the textile carding machine
US4233711 *Sep 6, 1978Nov 18, 1980Hollingsworth John DMetallic card clothing
US4398318 *Apr 30, 1981Aug 16, 1983Ashworth Bros., Inc.Card clothing for carding machine elements
US4625367 *Oct 10, 1985Dec 2, 1986Sole Leris RogerRigid clothing for card flats
US4646389 *Jan 22, 1986Mar 3, 1987Fritz StahleckerFitting for opening rollers
US4651387 *Apr 2, 1985Mar 24, 1987Marcello GiulianiCarding machine provided with self-cleaning blade or reed elements
US4854012 *Mar 28, 1988Aug 8, 1989Graf & Cie AgSaw tooth wire of a saw tooth-card clothing for a textile machine producing randomly oriented fibre fleeces
US4953264 *Jun 20, 1988Sep 4, 1990John D. Hollingsworth On Wheels, Inc.Metallic wire used with textile fiber processing elements, in particular, with cleaning rollers
US5547709 *Jul 28, 1994Aug 20, 1996Elektroschmelzwerk Kempten GmbhSurface treatment of opening rollers for open end spinning
US5581848 *Sep 19, 1995Dec 10, 1996Staedtler & UhlSaw tooth fittings
US5694759 *Dec 5, 1996Dec 9, 1997Waverly Mills, Inc.Process for producing polyester yarns on an open end spinning machine and yarns thus produced
US5699659 *Mar 8, 1996Dec 23, 1997Waverly Mills, Inc.Process for producing substantially all-polyester yarns from fine denier feed fibers on an open end spinning machine
US5755012 *Mar 3, 1997May 26, 1998Hollingsworth; John D.Metallic clothing for carding segments and flats
US5775086 *Feb 11, 1997Jul 7, 1998Fritz StahleckerDevice for opening fiber material into single fibers
US5891523 *Aug 9, 1993Apr 6, 1999Surface Technology, Inc.Method for manufacturing metallized heat treated precision articles
US5898978 *May 26, 1998May 4, 1999John D. Hollingsworth On Wheels, Inc.Metallic clothing for carding segments and flats
US6185789May 4, 1999Feb 13, 2001John D. Hollingsworth On Wheels, Inc.Metallic clothing for carding elements
US6190594Mar 1, 1999Feb 20, 20013M Innovative Properties CompanyTooling for articles with structured surfaces
US6408487 *Oct 28, 1999Jun 25, 2002Commonwealth Scientific And Industrial Research OrganisationCard wire, especially for doffers and workers
US6475565Oct 26, 2000Nov 5, 2002Elektroschmelzwerk Kempten GmbhProcess for producing a clothing wire for open-end spinning
US6584651 *May 1, 2001Jul 1, 2003Trutzschler Gmbh Co. KgDevice for increasing the specific weight of fiber material in a carding machine
US6874203 *Mar 8, 2002Apr 5, 2005Trützschler Card Clothing GmbHSaw-tooth wire for a set of rollers
US6902389May 14, 2003Jun 7, 20053M Innovative Properties CompanyWire wound tooling
US6920671 *Oct 8, 2003Jul 26, 2005Graf + Cie AgSawtooth wire
US7052639Apr 8, 2005May 30, 20063M Innovative Properties CompanyWire wound tooling
US7313908 *Nov 10, 2005Jan 1, 2008Rieter Ingolstadt Spinnereimaschinenbau AgDisintegrator with improved contour
US8590110 *Apr 9, 2012Nov 26, 2013Graf + Cie AgSaw-tooth clothing for a textile machine
US8789244 *Jul 11, 2011Jul 29, 2014Nv Bekaert SaWire profile for card clothing
US20120255143 *Apr 9, 2012Oct 11, 2012Graf + Cie AgSaw-Tooth Clothing
US20130133159 *Jul 11, 2011May 30, 2013Bekaert Carding Solution NvWire profile for card clothing
US20140338154 *Sep 7, 2012Nov 20, 2014Bekaert Carding Solutions NvCard wire with improved tooth shape
DE3439664A1 *Oct 30, 1984Apr 30, 1986Fritz StahleckerOpening roller for an opening device of an open-end spinning machine
DE3501876A1 *Jan 22, 1985Jul 24, 1986Fritz StahleckerGarnitur fuer eine aufloesewalze
DE3723872A1 *Jul 18, 1987Feb 2, 1989Hollingsworth GmbhReinigungsgarnitur fuer textilfasern bearbeitende elemente, insbesondere reinigungswalzen
DE19951775C1 *Oct 27, 1999Jan 11, 2001Kempten Elektroschmelz GmbhPreparing 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, 2004May 18, 2006Rieter Ingolstadt Spinnereimaschinenbau AgAuflöseeinrichung mit verbesserter Kontur
EP0138778A2 *Oct 5, 1984Apr 24, 1985Marcello GiulianiCarding-rod carding machine, for carding fibers in general, provided with self-cleaning blade or reed elements
EP0453436A2 *Apr 11, 1991Oct 23, 1991Hans-Peter LeitingerCutting device for a band saw
EP1657328A2 *Nov 4, 2005May 17, 2006Rieter Ingolstadt Spinnereimaschinenbau AktiengesellschaftFibre-opening unit having teeth with improved contour
WO1989000619A1 *Jul 13, 1988Jan 26, 1989Hollingsworth GmbhFitting for cleaning textile fibre processing elements in particular cleaning rolls
Classifications
U.S. Classification19/114
International ClassificationB23D61/00, D01G15/88, D01G15/00, B23D61/12
Cooperative ClassificationB23D61/121, D01G15/88
European ClassificationD01G15/88, B23D61/12B