US2320591A - Spinning funnel - Google Patents

Description

June l, 1943.

H. D. HALEY SPINNING FUNNEL Filed June 2l, 1941 INVENTOR.

Y Afl/6H D. HAL/ fx B l l ATTORY.

Patented June 1, 1943 SPINNmG FUNN EL Hugh D. Haley, Drexel Hill, Pa., assigno'r to American Viscose Corporation, Wilmington, Del., a corporation of Delaware Application June 21, 1941, Serial No. 399,122

3 Claims.

This invention relates to an improved funnel adapted to be used in artificial silk spinning machines for directing an artificial silk filament into the center of a centrifugal `spinning box where the filament is wound in the form of a cake.

Although funnels of this type have heretofore been made of plastic materials, it is an object of this invention to Provide a novel structure peculiarly adapted for formation of such funnels from plastic materials. It is also an object of the invention to minimize the number of joints in the funnel structure so that less care need be expended upon the funnel to insure that the interior surfaces thereof are free of irregularities uponY which the fllamentary material may be subjected t undue wear or tearing. A further object of the invention is to provide the internal surface 'of the main funnel body with seats at desired intervals upon which may be supported beaded rim,r inserts to prevent the illamentary material from dragging on the side walls of the funnel tube. Further objects ofthe invention will be apparent from the drawing and the description thereof.v

Figure 1 of the drawing illustratesn section one form of the invention. Y

Figure 2 illustrates in section a modification. Figure 3 shows a modified form of tip structure. The embodiment shown in the drawing, referring particularly to Figure 1, comprises a main 4body portion 2 having the bell-shaped funnel mouth 3 integral therewith, and a tip section 4` telescoped at 5 within the lower end of the main body portion so that its internal surface is flush with that of the interior surface of the main body portion where they meet at i. The internal surface ofthemainbodyportlonoftheflmnel comprises several distinct sections 1, l. l, Il and Il separated by small steps or shoulders l2, I3, Il, and Ii, each section being of slightly larger diameterinorderfromthebottomoftheiaibeto the top. These steps or shoulders provide seats for beaded ring inserts I6, l1, Il, and Il which have outside diameters of different sizes increasingfromthelowermostinserttothatumermost inthetube.'1heringlnsertsprwldedwiththe beads2l,2|, 22 andarereodilyinsertedinto their remectivepositions throughthetop of the' -tube may be given a somewhat increased taper from a narrow outside diameter at the bottom to a somewhat greater outside diameter at the top-f so that the average thickness of the tube throughout any given section is substantially equal to the average thickness of the tube in any other section along the length thereof as is shown in Figure 2;

The head portion 3 of the funnel is provided with a shoulder 24 for seating the funnel in the reciprocating apparatus commonly employed in artificial silk spinning machines, The head bushing commonly employed about glass funnels to absorb the shock transmitted by the reciprocating apparatus may be omitted as the neck portion 25 is sufficiently resilient and tough to absorb whatever shock occurs in thefunnel bearing means of the reciprocating apparatus. If desired, the neck portion 25 of the tube just below this shoulder may be provided with a screw thread adapting the funnel to be screwed directly into 'a complementary member of the bearing means supplied in the customary artificial silk spinning machines.

The various parts ofthe funnel are made of acid and alkali resistant materials. If desired, the entire assembly may be made of synthetic resins, such as polyvinyl resins, for example, polyvinyl chloride, polystyrene resins, phenol-formaldehyde resins, phenol-furfural resins, methacrylate resins, synthetic rubbers, or hard rubber itself. Preferably, however, the tip portion l should be made of glass, porcelain, agate, lava or similar material of which it has been customary to make the tips of such funnels heretofore. The inserts may be madeA of synthetic resins or of glass, porcelain, or similar material.

Preferably,I though `not necessarily, the tube funnel in order, the lowermt being inserted first. 'lheseinsertsmybeeenmtedinplaca or eschsectionotthenibemayhaveaslightlytaperinginsidediametersotlnteachrlngjmertts tigiitlyatthel'aottclnotitsrespectivesection.V

Whiletheouixldedmeta'otthemainbodyof the funnel tubeis ihownin'ligure 1 as being substantiallyconstsntthroughoutthelmgthof Figure 3 showsamodliicationinwhichtbe Vvinyl resins andthe polystyrene resins, for example, being sulilciently transparent for the puri poses of this invention. The employment of the synthetic resins has the advantage over glass of reducing breakage and the cutting ofthe spinning 'l happens that a yarn wraps about the funnel tip itself.

with an inwardly extending foot 2l directly into the tip 21.

While there have been described preferred embodiments of the invention, it is not intended to be limited to the detalsof such preferred em bodiments which are merely illustrative, but various modifications may be employed within the Aspirit and scope `of the following claims.

VI claim:

1. A funnel comprising an integral tube having a plurality of sections, each section having a different inside diameter, said diameter being of larger size in each successive section from one end to the other of said tube, and a beaded ring lowermost extremity of the funnel 2 is molded in size in each successive section from one end to the other of said tube, shoulders at the junctions between saidsections, and a beaded ringl in each section seated against a corresponding shoulder, said ring having an outside diameter substantially equal to the inside diameter of its respective section.

3. A funnel comprising an integral tube having a` plurality of sections, each section having a.v

different inside diameter, said diameter increasing in size in each successive section from one end to the other of said tube,l shoulders at the junctions between said sections, a beaded ring in in each section having an outside diameter subeach section seated against a corresponding shoulder, said ring having -anoutside diameter substantially equal to the inside diameter of its, respective section, the average thicknessl of the tube through a' given length of each section being approximately equal to that of the corresponding length of each of said other sections.

HUGH D. HALEY.

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