US2320590A - Funnel - Google Patents

Description

'June 1, 1943. H. D. HALEYv FUNNEL Filed 'June 21. 1941 INVENTOR.

HUGH D. HALEX BY i ATTO EY.

Patented June 1,1943

Hugh D. Haley, Drexel Hill, Pa., assignor to' American Viscose Corporation, Wilmington,

Del., a corporation of Delaware A Application June 21, 1941, Serial No. 399,121

, 9 Claims.

This invention relates to an improved funnel adapted to be used in articial silk spinning machines forl directing an artincial silk filament into the center of a. centrifugal spinning box in which the filament is wound in the form of a cake.

Itis an object of the invention to provide a funnel structurehaving a plurality of replaceable and interchangeable sections. It is a further object of the invention to so construct' and ar range the sections and the joints of the funnel that the filament guided through the funnel cannot possibly come into contact with the joints or any irregularity in the surfaces at the joints. It is a further object of the invention to provide -a funnel structure which is adapted to be easily molded from synthetic resins by a simple type of injection or` compression molding procedure.`

Further objects of the invention will appear hereinafter.

In the drawing illustrative of the invention,

Figure l is an elevation in cross-section of theA funnel, and

- Figure 2 shows a modification thereof.

Figure 3 shows a modified form of tip structure. In Figure 1 of the drawing, a funnel made up of a head section2, a tip section I, and four substantially identical intermediate vsections 4, I, i

and 1 is shown. Each section, except the tip 3 and the head `il, is provided with a cylindrical sleeve 8 extending from its lower end and a cylindrical sleeve S'lextending from itsupper end, the cylindricalsleeves at the opposite ends of 'each lsection being of such size andv shape that that at the lower end of the section is complementary to and will nt over that of the upper end of another section to be connected therebeneath. The head section is provided with a similar cylindrical sleeve It extending from its lower end while the tip sectionV is provided with a similar cylindrical sleeve Ii extending from its upper end. Each section except the tip section is provided with an internal annular `bead I2 formed integrally with the section wall at the lower end of the section. By so constructing and arranging the annular bead, which is adapted -to prevent the filament from striking and dragging along the internal surface of the funnel, all of the breaks made in the interior surface of the funnel by the joints Il between the sections are placed Y in proximity to the annular beads so that it is impossible for any nlament passing through the funnel to ever be drawn across these -below the shoulder.

and complete absence of irregularities of the surfaces exist at the several joints between the interchangeable sections. While vthe lower surface of each of the annular beads is shown as a iiat l plane lying perpendicular to the axis cf the funnel, it may be rounded on and polished at its -inner periphery, if desired.

The head section 2 of the funnel may be provided, as is customary, with the bell-shaped mouth serving as the entrance for the illament. It may also be provided with a shoulder IIl and, if desired, with a thread at the neck portion I5 'Ihe thread, of course,is provided to facilitate the mounting of the funnel within the customary traverse mechanism employed in artificial silk spinning machinesI which reciprocates the funnel up and down to provide for the properwinding -of the iilament within the cake in the spinning box. However, the thread may be replaced by a smooth surface adapted to be supported directly in the reciproeating apparatus with or without the customary lead bushing used heretofore. The resiliency of the resin body of the funnel is such as to absorb the shocks transmitted by the reciprocating mechanism adequately without the lead bushing. The tip of the funnel is-provided with a central opening Il.y I The joints may be made by means of a cement, or they may be made by forcing together the comp'lementary cylindrical sleeves which have bee designed to tit tightly.

be made The various sections of the funnel may of any desirable hard and relatively rigid material which is resistant to acidsfalkalis and other chemical solvents that may be present in the filaments. While glass may be employed, it is preferable to employ plastic materials.-such as synthetic joints. 1n this fashion, it is unnecessary to take special precautions to see that perfect alignment resins such as polyvinyl resins, for example polyvinyl chloride, polystyrene, phenolformaldehyde resins, phenol furfural resins, methacrylate polymers, synthetic rubbers or hard rubber itself.' While the tip mayalsc be made of the same material as the other sections of .the funnel, it is pref-- etably made of porcelain, glass, agate, lava or of other hard, inert materials customarily emplo'yed in such funnels heretofore. 1

The structure shown and described above is particularly adapted to be manufactured by a simple injection or compression molding procedure from the synthetic resins, particularly polyvinyl chloride, polystyrene,v and related resins. To facilitate the separation of the moldedl sections from the forms or dies, they are preferably made with a slight taper which results in the slight oiset H shown in Figure 1.v This may be rounded on as in Figure 1 or it may be trimmed down sufciently to make the outside surface appear to be in alignment as is shown in Figure 2 at I8. Since the head section 2 isdistinct and is not replaceable by any of the other sections, the cylindrical sleeve I extending at the lower portion may be made thicker than the corresponding sleeves of the other sections and no ofiset occurs at the outside of this joint. Consequently. the neck portion i5 is considerably stronger. This provides additional strength at the portion of the funnel tube, namely where it is borne in ,the reciprocating mechanism, where there is the greatest tendency of the tubeto break.

therewith, the bead on one of said sections being immediately above and projecting substantially directly inwardly from the inside joint between said section and the next adjoining section whereby said bead prevents contacting of the joint by the lamentary material.

5. A funnel for guiding lamentary material comprising a head section, a tip, and a plurality Figure 2 illustrates on somewhat larger scale Y than in Figure 1 a modiicatoin in which the upper cylindrical sleeve I8 surrounds the complementary lower cylindrical sleeve 2l of the section thereabove.

Figure 3 shows a modification in which the lowermost section 2l (corresponding 'to section 1 of Figure l) is molded with an inwardly extending annular foot 22 directly in the tip 23.

While certain advantages of the funnel structure have already been stated, the funnel structure of this invention has the additional advantages of reduced breakage a-nd cutting of spinning boxes as compared .with glass and ease and economy of repair by replacement of broken sections.

While there is shown and described a preferred embodiment of the invention, it is not intended that it be limited to all of the speciiic details hereinabove described, but modications nl ay be made herein withinI the scope of the appended claims.

I claim:

1. As an article of manufacture, a hollow tub adapted for guiding a iilamentar'y material having a body portion and complementary coupling portions integral therewith extending from opposite ends of the body portion, the interior of one of said coupling portions and that of the body portion forming a continuous inner wall. the ends of which are adapted to form inside joints with the complementary coupling' portions of other such tubes, and said tube having an annular bead integrally formed therein projecting substantially directly inwardly from one end of said inner wall whereby said bead prevents contacting o! the 'adjacent joint by the fllalnentary material.

2. A funnel for guiding illamentary material comprisingia plurality of adjoining hollow sections having an annular internal bead, the bead of one of said sections projecting substantially directly inwardly from the inside joint between said section and the next adjoining section whereby said bead prevents contacting of the joint by the filamentary material.

3. A funnel for guiding iilamentary material comprising a plurality of adjoining hollow sections having an annular i-nternal bead integral -therewith, the bead of one of said sections projecting substantially directly inwardly from the inside joint between said section and the next adjoining section whereby said bead prevents contacting of the joint by the illamentary material.

4. A funnely for guiding iilamentary material Icomprising a plurality of adjoining hollow secof hollow intermediate sections, an annular bead in saidl head section and in each of a plurality of said intermediate sections, said beads extending inwardly from the lowermost portion of the interior of each of said last-mentioned sections and being arranged to project substantially directly inwardly from the inside joint between its sections and the adjoining section therebeneath whereby said bead prevents contacting of the joint by the illamentary material.

6. A funnel for guiding filamentary material comprising a head section, a, tip, and a plurality of adjoining hollow intermediate sections, an annular bead i'n said head section and each of a plurality of said intermediate sections, each of said plurality of intermediate sectionsbeing identical and having complementary coupling portions extending from opposite ends thereof, said beads extending inwardly from the lowermost portion of the interior of each of said sections and being arranged to project substantially directly inwardly from the inside joint between its section and the adjoining section therebeneath whereby said bead prevents contacting of the joint by the lamentary material.

7. A funnel for guidingilamentary material comprising a head'section, a tip, and a. plurality of adjoining hollow intermediate sections, an annular bead insaid head section and in each loi a plurality of said intermediate sections, each of said plurality of intermediate sections being identical and having complementary coupling portions extending from opposite ends thereof, said beads extending inwardly from the lowermost portion of the interior of each of said sections and being arranged t0 project substantially directly inwardly from the inside joint between its section and the adjoining section therebeneath whereby said bead preventscontacting, of the joint by the filamentary material, said head section being provided with a neck portion of substantially greater strength than that of said intermediate sections by virtue of greater wall thickness.

8. A funnel for guiding iilamentary material comprising a plurality of adjoining hollow sections having an annular internal bead, the bead of one of said sections projecting substantially directly inwardly from the inside joint between said section a-nd the next joining section, and a tip section having an annular internal bead projecting substantially directly inwardly from the inside joint between said tip section and the next adjoining section whereby said bead prevents contacting `of the joint by the lamentary material.

9. As an article of manufacture, a funnel comprising a generally tubular body portion 'having an inwardly extendingportion adjacent one end thereof, said inwardly extending portion being molded directly to conform to a corresponding recess in the outer surface of a hard annular tip section to thereby hold said tip section in place within the inwardly extending portion onv the end of said tubular portion.

HUGH D. HALEY,

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