Nov. 12, 1946. 2,411,049 |_. J. MADDEN FUNNEL Filed Sept. 17, 1945 Ia.r , ‘rd 4 IN‘VENTOR 41w J ?amamw BY 4 ' x W fi/oéww ' ' ATTORNEY . Patented Nov. 12,1946 ‘ UNITED STATES‘ PATENT OFFICE ' 2,411,049 ' . FUNNEL Leo J. Madden, Whitesboro, N. Y., asslgnor to Skenandoa Rayon Corporation, Utica, N. Y., a ' corporation of Delaware ' Application September 17, 1945, Serial No. 616,933 '7 Claims. 1 My present invention-relates to a funnel for spinning rayon and more particularly to such a funnel construction as may be-of peculiar utility and advantage in the pot spinning process for viscose rayon in which such a funnel is vertically reciprocated by a traverse mechanism and oper ates in conjunction with a spinning pot wherein (01. 57-71;) of the bath, which’have a chemical erosive action upon the glass. , The thread passing through the funnel also has a physical abrading action upon those portions of the funnel with which it comes into contact, par ticularly the tip portion thereof, this being accen tuated when so-called “chalk luster yarn” is be ing made. This yarn is delustered by the ad mixture with the material of which the yarn is the rayon thread is collected as it is formed. It hasbeen customary in the prior art to con struct funnels of this'kind from a single integral 10 made of a quantity of very fine particles of pig body of glass formed to provide certain constrict ment. This pigment, which is usually of an in ed portions at spaced intervals along the stem of organic nature, increases the abrading action of the funnels and a constricted portion at the tip the thread on the funnel and also causes an in or lower end thereof. These glass funnels are creased fraying action on the thread due to pas relatively cheap, but are objectionable from cer 15 sage over a rough surface of the funnel. ' tain points of view. In the ?rst place, being of For all these reasons it has been found‘ that glass, they may be shattered in use and particles ' glass funnels do not stand up in practice except of broken glass get into the spun cake, damaging for a‘ relatively short time in a condition such _a substantial amount of yarn or thread being that they will not in effect injure or sometimes formed. Furthermore, as they are formed as a 20 even cause breakage of the thread or yarn. Fur one-piece body, it is dif?cult to clean the interior thermore, roughnesses in the interior of a funnel thereof thoroughly, which must be .done from may cause substantial difficulty in the “piecing time to time. This condition arises frequently in commercial operation due to the accumulation of up” of the unit. Some‘of these difficulties are caused by the presence of rough portions so slight foreign matter inside the funnel itself, which 25 as to escape observation upon even fairly care matter is reddish in color, so that it is conven ful inspection. Furthermore, as the glass funnels tionally termed a “red deposit.” The exact char now conventionally used 'in the art are all in one acter of this deposit is not known, but it is sus piece, the inside thereof is not readily accessible pected that it is to a substantial part at least for cleaning. Also, any one portion of a one composed of sulfur and certain lead salts which 30 piece glass ’funnel, which may be worn or other are formed by the reaction of some of the chem wise damaged as aforesaid, will require the re icals of the spinning bath upon the lead lining of _ placement of the entire funnel. the container for that bath. However, irrespec It has been proposed, for example, in the pat tive of its exact character or chemical composi ents to Haley Nos. 2,320,598 and 2,320,591, both ticn, it is a source of trouble in commercial op 35 granted June 1, 1943, to form funnels'for this eration and must periodically be cleaned outof same general purpose in various sections or por the funnels being used before this accumulation tions, so that the portions thereof may be re moved and replaced without requiring the dis is permitted to cause actual and substantial dam age to the thread being formed. 'This cleaning carding of the entire device. However, even in operation is of a quite drastic character, and 40 these structures, accessibility to the interior por normally includes both mechanical cleaning and also the treatment of the parts to be cleaned with tions is quite di?icult, and there is an absence of ‘internal streamlining, which is one of the objects ‘ of the present invention. suitable chemical solutions. Furthermore, dur A primary object of the present invention, ing thenormal operation of the device in the “piecing up” or initial starting of the formation 45 therefore, is to provide a funnel of the character of a new cake, it is usual to eifect the passage of described, which is made up of a plurality of parts, so constructed and arranged that they can the thread through the funnel by washing a loose be taken apart, inspected, easily and thoroughly end of the‘thread downwardly by the use of a cleaned, and individually replaced as may be nec small cupful of the spinning bath. Thus the in 50 essary, . terior of the funnel is subjected at this time to A further and more detailed object of‘ the pres the acid of this ‘bath. Furthermore, during the ent invention is to provide a funnel made up of continuous operation of the unit with which the parts,.which are individually of erosion and wear funnel is being operated, the thread carries along resistant materials including particularly an with it some of the acid and/or other chemicals 65 outer-tube forming the stem portion of the funnel 2,411,049 - 3% which is made up of a plurality of portions mat ing longitudinally so that when these portions are disassembled, the several parts may-be easily ac cessible for thorough inspection, cleaning, re placement, or repair. . ' a ‘ ing of the portions 2 and 3, ‘or may be cut therein . ' in any suitable manner. In the form shown in Fig. 1, for example, it is contemplatedthat the inserts B will be secured in the associated recesses 5 preferably by means of a suitable cement, al though this is not always necessary, and in some instances may be wholly omitted if desired. If A further object of the present invention is to provide a funnel construction as above generally ‘set forth, wherein there is provided a tip insert of material resistant to both the chemical erosive ' such cement is used, the amount thereof should to the physical abrasion incident to such use; and bly of the parts, the cement will not be squeezed‘ into the space intended to be free within the v‘be less than that required to cover‘ the outside action to which it may be subjected in use and 10 surfaces of the inserts 6, so that‘upon the assem - wherein provision is made for holding this tip in; sert rigidly and non-rotatably in the lower end portion of the funnel. funnel, and through which the thread passes. ' In Fig. 4 there is shown a modi?ed form of this - , Other and more detailed objects of the present 15 construction, wherein there is provided a relative thin layer 8 of material, preferably of ‘a resilient invention will become apparent from the follow character such as rubber, around the inserts 6, ing specification and appended‘ claims, when separating them from the bottoms of the recesses taken in connection with the accompanying 5 and insuring the holding of the inserts 6 rigidly drawing, inv which: but resiliently in a desired position within the Figure 1 is a view in longitudinal central sec 20 tion showing a funnel constructed in accordance , portions ‘2 and 3. 1 Associated with the upper end of the funnel of Fig. 1 is a substantially conical mouthpiece gen Figs. 2’ and 3 are views in transverse section of erally indicated at 9, and ‘having a depending the embodiment of the invention shown‘in Fig. 1 ~sleeve H) for containing and holding together the 25 respectively on the lines 2-—2 and 3-3 thereof; upper ends of the portions 2 and 3. If desired, a ' Fig. 4 is a fragmentary view similar to a por small amount of ‘cement may be applied onto the tion of Fig. 1, showing a modi?ed form of means outside of the upper portions 2 and 3 to'be re for positively holding one of. the inserts in its ceived within the sleeve ill. The mouthpiece 9 desired position; Fig. 5 is a fragmentary view similarto the lower 30 further has a‘ portion H adjacent to the lower end of the conical portion- thereof and de?ning with the present invention; end portion of'Fig. 1 showing a modi?ed con struction ; i and the minimum diameter opening at H as substan 1 tially the same diameter as the inside diameter of the tubular member ‘I. In the form shown, Fig. 6 is a view similar to Fig.5 showing a further modi?cation. ' Turning now to the accompanying drawing, 35 this portion ll also serves as the upper end of ' the recess 5 for receiving the uppermost of the inserts 6 and extends over the upper ends of the members 2 and 3. The mouthpiece 8 may be of provided a funnel having an outer tubular mem any suitable material, such as that of which the ber generally indicated at i. This member com members 2 and 3 are constructed as aforesaid. 40 prises a plurality, in this case two, portions 2 and At the lower end of the funnel there is posi L7 mating longtiudinally on a central longitudinal tioned atip insert H, which has an external ?ange piane as indicated by‘ the division line or plane ii. M at its upper end adapted to be received in a The ‘portions 2 and 3 of the member 8 may be suitable annular groove, shaped to correspond formed independently as by molding, or may be formed by cutting a tube of suitable material . 'with the shape of the ?ange M and to bind upon this ?ange to hold the tip insert i3 rigidly in along the linear plane A. These portions are the lower end of the portions 2 and 3. In order preferably formed of some suitable acid-resistant to prevent relative rotation between the tip insert material such as a laminated phenolic resinous and the funnel, it is preferred that the flange M body. " be non-circular in horizontal contour. This may 50 There are formed in the portions 2 and 3 suit be effected in any desired manner, for; example, able, similarly disposed, semi-annular recesses 5, as by forming this ?ange with a lug l5 thereon which, when the portions 2 and 3 are in their ' as shown best in Fig. 3, which is received in a assembledrelation, as shown in Fig. 1, join to complementarily shaped indentation extending form annular recesses. Positioned by and within and particularly Figs. 1 to 3 thereof showing one embodiment of the present invention, there is ’ these recesses are a plurality of thread-guiding inserts 6, which may be of any desired suitable It has been found that the require ments for these inserts are that they should be of a material which may be formed or polished to a, hard, smooth, thread-contacting surface, and that the shape of this surface should be in ternally completely convex considered from the point of view of the center line of the funnel, that is as seen in a vertical central section such as that of'Fig. 1, wherein the surfaces in ques tion are shown at 1. Any desired number of such inserts may be employed, ‘three being shown a material. in Fig. 1. from the recess receiving the ?ange It. ‘ For holding the parts in assembled relation in conjunction with the sleeve In, there is provided adjacent to the lower endof the funnel a collar IE, which may surround the lower end of the por tions 2 and 3 and be suitably secured thereto as by some suitable cement. The material of the inserts 6 and I3 is prefer ably hard and abrasion-resistant as aforesaid, and also resistant to the chemical erosive action of the acid to which it is almost constantly sub jected in use and to the chemical solutions to Furthermore, the con?guration or con formation of the inserts and the shape and depth which it may be subjected for purposes of clean ing. While the present invention is not limited specifically as to the character of this material, of the recesses 5 are such that when the parts it has been found that lava is a suitable material are in assembled relation, there will be substan tially no grooves, slots or recesses left open for the accumulation of foreign matter, so that‘ the funnel as a whole may be internally streamlined. The recesses 5 may be formed during the form 75 Referring now to Fig. 5, there is shown a modi ?cation of the construction of the lower end por tion of the embodiment of Fig. 1, wherein instead of the collar I6 surrounding a uniform outside di for making these parts. _ 2,411,049 . 5 6 . ameter portion of the tubular member I,‘ the lower end of this member is undercut to receive a col lar H, which has the same. outside diameter as the outside diameter-of the tubular member I, so that when the parts are assembled, there will be i no non-uniformity in the outside contour of the tubular member I substantially throughout its length, or at least throughout that portion there ‘ - having ‘a plurality, of similarly disposed annular‘ ‘ recesses, a plurality of thread-guiding inserts po sitioned in and spaced by said recesses in the as sembled relation of the parts, a substantially coni cal mouthpiece having a depending sleeve for containing and holding together the upper ends _ of said portions, a tip insert having an external ?ange, an annular recess adjacent to the lower ‘ends of said portions for receiving said external pot (not shown) with which the funnel is asso ?ange to hold said tip insert rigidly in a predetere ciated in use. Suchv a construction has several 10 mined‘ position at the lower end of said funnel, practical advantages as will be obvious to those and means for holding the lower ends of said por skilled in the art. The collar I‘! may be similarly tions and all said inserts in assembled relation. cemented or otherwise secured to the lower end _2. A funnel for spinning rayon in accordance portion of the tubular member I" as above stated 15 with claim 1, wherein said external ?ange of said for the collar 16. . tip insert'and the recess in the lower end of said of which is normally introduced into the spinning Referring now to Fig. 6, there is shown at I8 a somewhat di?‘erent form of tip insert, generally‘ portions for receiving saidw?ange are both com plementarily shaped and non-circular in horizon equivalent in function to that of the tip insert tal cross-section, so that said‘ tip insert is non i3 previously described. In this case the outer 20 rotatably and rigidly secured in the lower end of ?ange, generally indicated at H, is formed in an said funnel in the assembled position of the parts. outwardly directed wedge shape as by the pro 3. A funnel for spinning rayon in accordance vision of suitable frusto-conical portions meeting with claim 1, comprising in addition, a layer of at their bases. The groove within which this resilient material in said ?rst named recessesbee ?ange is received is complementary in shape to 25 tween said portions and said inserts for rigidly this ?ange 19. Thus, if there is a slight relief and resiliently positioning said inserts in such re between the meeting surfaces of the members 2 cesses in the assembled position of the parts. and 3 at the plane 4, the gripping action of these 4; ‘A funnel for spinning rayon in accordance two portions upon their assembly will tend to ac with claim 1, comprising in addition, an amount commodate slight changes in the outside diameter 30 of cementitious material only partially covering of the ?ange ill or the depth of the associated ' the outer surface of each of said inserts and in groove as by wear or slight irregularities of manu terposed between such inserts and said portions facture or otherwise, so' that the tip insert it will for holding said inserts rigidly in the recesses of always be rigidly held in its desired position at ' said portions in the assembled position of the . the lower end of the funnel. parts. The rigid and non-rotatable character of the means for holding the tip insert in the lower end ' 5. A funnel for spinning rayon in accordance with claim 1, wherein said external ?ange of said tip insert is formed of two substantially frusto conical portions meeting at their bases, and wear out the supporting tube portions 2 and 3 40 wherein the recess adjacent to the lower end of very quickly. ' said portions for receiving said ?ange is corre It has been found that a. funne1 constructed in spondingly shaped, the parts being so constructed accordance with the present invention is remark— and arranged that upon the clamping together of ably free from various of the diiliculties incident said portions adjacent to their lower ends, the tip to the use of prior art constructions, in that the 45 insert will be rigidly and non-rotatably secured in parts are rigidly held in position as aforesaid, yet its predetermined position in respect to said fun the funnel as a whole maybe disassembled for the nel and slight variations in the diameter of said adequate and thorough cleaning of all the parts ?ange portion and its associated recess will be thereof in any suitable and/or conventional man compensated by the shape thereof. ner. Furthermore, if some one part becomes 6. A funnel for spinning rayon, comprising an i of the funnel are of substantial importance, as it ' has been found that a loosely held tip insert will slightly worn, it may be resurfaced or repolished; or if that wear is too great, it may be: replaced without at the same time replacing the entire device. By reason of the fact that the inserts 6 are'all interchangeable, but one type of replace ’ment inserts need be kept on hand for this pur pose. Due to the streamlined interior contour of the funnel, it'has been found possible to “piece up" the unit with facility in starting the operation outer tubular member formed of a pair of similar portions mating longitudinally, each of said por tions having a plurality of similarly disposed semi annular recesses, a plurality of interchangeable thread-guiding inserts positioned in and spaced by said recesses in the assembled position oi‘ the parts, a substantially conical mouthpiece having a depending sleeve for containing and holding to gether the upper ends of said portions and having for the making of a new cake of yarn or thread. 60 its lower inner end of an internal diameter sub- ‘ In general, the apparatus speci?cally described ac complishes all the objects hereinabove stated and others which are not given in detail. While there is shown and described but one principal embodiment of the invention and but a few“ variants thereof, it is contemplated that these or further changes may be made by those skilled in the art without departing from the spirit of this invention as set forth in the ap pended claims, which are to be construed validly as broadly as the state of the prior art permits, What is claimed is: , - 1. A funnel for spinning rayon, comprising an outer tubular member formed of at least two por stantially equal to the inside'diameter of said tu-v bular member, a tip insert having an external ?ange adjacent to its upper end, an annular recess adjacent to the lower ends of said portions for re ceiving said external ?ange to hold said tip insert rigidly in a predetermined position at the lower _ end of said funnel, and. a cylindrical sleeve for surrounding the lower ends of said portions for cooperating with said depending sleeve to hold all the parts in assembled relation. 7. A funnel for spinning rayon, comprising an outer tubular member formed of two similar por tions mating longitudinally, each-of said portions having a, plurality of similarly disposed semi-an tions mating longitudinally, each of said portions 75 nular recesses, a plurality of interchangeable 2,411,049 thread-guiding inserts positioned in and spaced by said recesses in the assembled position of the parts, a substantially conical mouthpiece having. 2. depending sleeve for containing and holding to gether the upper ends of said portions and hav and non-rotatably in a predetermined position at the lower end of said funnel, all said inserts and all said recesses for receiving them being of such size and so constructed and arranged that said funnel, upon the assembly of the parts thereof, is internally streamlined, an amount of cement only ing an opening at the lower‘end of the conical por partially covering the external surface of each of ‘ tion thereof, the inside diameter of which is sub said inserts applied thereto to secure the parts in stantially equal to the inside diameter of said tu~ rigid assembled relation, ‘and an annular, sub bular member when the portions thereof are as sembled together, a tip insert having a non-cir 10 stantially cylindrical collar member associated with the lower ends of said portions and cooperat cular external ?ange, an annular recess shaped complementarily to said flange adjacent to the lower ends of said portions for receiving said ex ternal ‘?ange so as to hold said tip insert rigidly ing with said depending sleeve in holding said por tions and said inserts in assembled relation. . ' LEO J. MADDEN.