US2575446A

US2575446A - Ring top bucket

Info

Publication number: US2575446A
Application number: US156908A
Authority: US
Inventors: Richard J Gollong
Original assignee: American Viscose Corp
Current assignee: Akzo Nobel UK PLC
Priority date: 1950-04-19
Filing date: 1950-04-19
Publication date: 1951-11-20
Anticipated expiration: 1968-11-20

Description

R. J. GOLLONG RING TOP BUCKET Nov. 20, 1951 2 SHEETSSHEET 1 Filed April 19, 1950 INVEN TOR. RICHARD J GOLL 0N6 Nov. 20, 1951 R. J. GOLLONG 2,575,446

RING TOP BUCKET Filed April 19, 1950 2 SHEETS-SHEET 2 L ,72. 44 III I? as 7 79 77 V! nullllllll @111!!! JNVENTOR. RICHARD J. GOLLONG A T TORNE Y.

Patented Nov. 20, 1951 UNITED STATES PATENT OFFlCE 2,575,446 1mm TOP BUCKET Richard J. Gollong, Wilmington, Del., assignor to American Viscose Corporation, Wilmington, Del., a corporation of Delaware Application April 19, 1950, Serial No. 156,908

19 Claims. (CI. 57-78) rough treatment to which the buckets are subjected while being handled during repeated doifing operations. Picks are often employed to loosen the lock ring which holds the cover in place. When the cakes stick to the walls of the bucket, the bucket may be dropped or bumped on a hard surface to loosen the cake if it does not readily separate from the bucket when held in an inverted position. Although buckets are often removed from service because of severe accidental damage such as from mutilation of the interior surface by a broken stem of a funnel guide, the buckets are most commonly rejected as the result of the deterioration of the rim section.

Some of the buckets in conventional use comprise a principal material selected on account of its high strength rather that its corrosionresistance, such as aluminum or other metals, and a corrosion-resistant coating in adhesive relationship with the principal material. When fragments of the coating are removed, such as during the forcible removal of a cake from a bucket, the basic structural material of the bucket is exposed to corrosive materials. The rims of the buckets are frequently damaged while practicing still another common expedient of spinning machine operation, that of braking a bucket to a complete stop by the manual application of a piece of canvas or other material to the bucket rim; in most cases, driving the spindle which supports and rotates the bucket by frictional engagement of the spindie within the bore of the hub continues unabated.

Consequently, the service periods of the majority of the buckets that are scrapped are terminated because of damage or deterioration to the bucket along its rim section while the remainder or body section of the buckets are undamaged and capable of much longer service.

It is an object of the present invention to provide buckets comprising a body section and a replaceable rim section. Another object is to provide a bucket having a body section which may be rendered corrosion-resistant by a coating, and a rim section that is fabricated from a material which does not require a coating so that it may withstand severe abrasion or other severe treatment when, for example, the bucket is stopped from rotating by friction means applied to the rim thereof. It is still another object to make available for use in bucket construction, many high strength materials which are not considered acceptable because of their lack of corrosion-resistance. It is also an object to provide a spinning bucket which may be used for unusually long service periods and then reconditioned inexpensively. Other objects, features and advantages will be apparent from the following description of the invention and the drawing relating thereto in which Fig. 1 is an elevation view of a bucket constructed according to the invention, with a portion broken away to better illustrate its composite construction;

Fig. 2 is a fragmentary section view of the body portion of Fig. 1 and a ring used when applying a coating material to the body portion;

Fig. 3- is a fragmentary section of a completely assembled bucket having a rim section, and a body section such as shown in Fig. 1;

Fig. 4 is a fragmentary section of a bucket hav ing modified rim and body sections;

Fig. 5 is a fragmentary section illustrating a modified bucket having separable body and rim sections; 7

Fig 6 is a fragmentary section of another bucket having modified body and rim sections illustrating still another method of securing the sections; and

Fig. 7 is a fragmentary section of a bucket comprising prefabricated rim and body sections and a cover suitable for shaping yarn packages having rounded edges at both ends.

According to the present invention, a spinning bucket is constructed in at least two portions comprising a body portion and a replaceable rim portion of corrosion-resistant material, with the portions having connecting means and abutting complementary surfaces adapted to provide support and coaxial alignment of the rim section on the body section.

Fig. 1 illustrates a bucket according to the invention comprising a body section 4 and a removable rim section 5 fabricated from a corrosio'n-resistant material such as a laminated product of fabric and/ or urea-formaldehyde resin. The body section is provided with a groove I having a cylindrical surface 8 which engages a cylindrical surface 9 of the rim 5 with sufficient tightness to require substantial manually applied pres- The rim 5 iscontoured to engage the top surfaces of the flanges H and I2 of the body section 4 which form the groove 1. The rim and the body section are bonded together or adhesively joined at M and I5 by a thermoplastic or thermosetting coating (6 applied to the body section and/or rim section before connecting them.

The material which forms the coating I6 may be of any suitable thermoplastic or thermosetting material which forms a strong bond with the surface of the uncoated body sect on 4. In order to apply some coating materials, it may be necessary to first apply a priming coat of different composition to the uncoated body section in order to obtain the desired adhesion of the coating material. For example, aluminum buckets are effectively coated with dispersions or solutions containing such resinous materials as polyvinylchloride, polyvinylidene chloride, polyethylene, polymers of tetrafluoroethylene and trifluorochloroethylene, alkyd resins, silicone resins, latices of synthetic rubbers such as polychlorobutadiene and copolymers and butadiene and acrylonitrile, and final or intermediate condensation products of urea-formaldehyde, phenol-formaldehyde, and melamine-formaldehyde. Coatings of these materials may be dried and the coated bucket subjected to a heat treatment to bring the resinous material constituting the dried coating to a plastic and adhesive state to transform the coatings into a tough film to obtain adhesive attachment of the rim section to the body section. The heat treatment may be necessary to ellect a chemical change in the resinous material such as vulcanization when using a rubber-like material, or further condensation such as when'using intermediate condensation products of phenolformaldehyde. Various plasticizers pigments, and coloring material may be added to the dispersions or the solutions to obtain the physical, surface, or visual characteristics desired in the coating.

Since it is intended that the rim section 5 shall be readily replaced when damaged or worn, the coating material need not be applied to the surfaces of the groove 1. To prevent the coating material from entering the groove, an annular ring such as the ring 20 shown in Fig. 2 may be inserted into the groove while applying the coating material to the body section 4. Sharp edges or corners are avoided in the construction of the body section 4 so that a coating of uniform thickness may be applied to the surfaces thereof. For example, the surfaces of the flanges H and I2 are rounded to avoid edges over which the coating would not form to an adequate thickness. Thin places in the coating which might wear through and expose the basic construction material of the body section to corrosive materials are thereby avoided. When the material for forming the coating is in the form of a liquid, it is preferably applied by spraying the body section while rotating it. A coating may be applied by this method with great uniformity and accuracy with respect to a predetermined thickness. Dipping may be used as an alternate procedure.

Fig. 3, a fragmentary section view. illustrates a fully assembled bucket wherein a bucket lid 22 is shown in its normal operating position in which the annular seating surface 25 thereof rests on the flange-l2. The lid is held in place by a flexible lock-ring 23 which expands into a groove 24 of the rim section 5. A plurality of holes 26 extend radially from the ring groove 24 through which liquid carried into the bucket by the yarn may escape from around the seating surfaces for the cover 22. It is important that substantial thickness of the coating be obtained along the seat- 1 ing surface of the flange I2 for the lid because it is along this portion of the body section that the coating is most likely to be punctured or abraded. The corners of flange l2 are therefore rounded and the flanges are of suflicient width to provide ample seating surface for the cover 22.

To remove the rim section 5 from the body section 4, the bucket is allowed to stand for a period in a bath of stripping solution comprising a swelling agent or solvent for the coating l6. Thereafter, the rim section may be easily separated from the body section and the coating may then be stripped from the body section to prepare it for the application of another coating and for receiving a replacement rim section.

Coatings of the type employed in the practice of this invention are applied preferably in thicknesses of at least several thousandths of an inch in order to obtain adequate protection of the body section from abrasion, and to provide sufficient material to efficiently bond the rim and body sections together. The coating is preferably applied to the uncoated body section without the usual polished finish given to aluminum buckets. The bucket made of aluminum is in suitable condition to receive a coating after the ordinary machining or grinding operation required to shape the body section to desired dimensions or when cast to sufficient dimensional accuracy. The cost of the coating is partly or entirely offset by eliminating the polishing operation usually required to properly finish the surface of the buckets.

For added protection of the body portion of a bucket from abrasion such as developed by frictionally decelerating the bucket from operating speed to a complete stop, a replaceable rim is provided such as shown in Fig. 4 which has a peripheral surface 30 of greater diameter than the peripheral surface 3i of the body section 33. This arrangement provides a circumferentially over-hanging area 34 of the rim section which tends to prevent the material which is used to brake the bucket from coming into contact with the surface 33 of the body section.

Such protection of the bucket surface from abrasion is particularly desirable when the body section is fabricated from a material which is not corrosion-resistant but is coated with a relatively thin layer of corrosion-resistant substance. The rim section illustrated by Fig. 4 may be joined by a material used for coating the body section such as used for joining the body and rim section of the bucket illustrated in Fig.

' 1. The outer flange 36 is preferably higher than the inner flange 31 to obtain a rim structure which resists the excessive strain produced by the high centrifugal forces which develop at rotational operating speeds within the region where the rim flange 39 joins the main portion of the rim section 30. A plurality of radially extending pasageways such as the bore M in communication with a groove 42 is provided at circumferentially-spaced intervals throughout the section the outer area of the bucket that is likely to be damaged during dofilng operations. The rim 46 is secured to the body section by a plurality of screws 50 uniformly spaced along the rim of the bucket. The rim section 46 may be adhesively joined to the body section along matching surfaces in addition to or in the absence of other methods of connection such as that provided by the screw-typefasteners 50. A plurality of slots which extend upwardly from the lid seating surface 52 intersect a ring groove 54 and extend upward therefrom to the upper edge of the rim section 46 to permit the escape of liquid from the vicinity of the seating surface of the bucket cover (not shown).

Fig. 6 illustrates another bucket comprising a rim section and body section combination wherein the rim section 60 is secured to a body section 62 by a plurality of pins 64 which extend into cooperating apertures of the rim section and body section. The pins 64 are preferably uniformly spaced along a circle accurately centered with respect to the axis of the rim section and the body section so that standard rim sections may be constructed which are interchangeable and readily replaceable with a body section. If desired, the portions of the pins 64 extending into the body section may be threaded and anchored permanently in threaded relationship within the upper portion of the body section,

and the rim section provided with holes of a diameter such that it must be pressed into engagement with the body section to form the assembled bucket. A plurality of drain slots such as the slot 66 and similar to the slots 5| of Fig. 5 extend upwardly from a cover seating surface 61 at spaced points along the inner periphery of the rim section 60 to provide escape channels for liquid from the vicinity of the end portion of a yarn cake formed within the bucket.

Fig. 7 illustrates in fragmentary section an assembled bucket comprising a rim section 10, a body section II, a cover 12, and a lock ring 13. The body section comprises a material such as aluminum which is preferably protected by a coating 15. The coating, as in the embodiment described with respect to Fig. 1, is preferably a thermosensitive material having adhesive properties such that it may be used to secure the rim section to the body section. Prior to assembling the sections, the surfaces of the body section at 11 and 1B are coated with the protective material. The vertical surface 19 of the bucket is left uncoated. Adhesion of the two sections to the coating which covers the surfaces 11 and 19 may be obtained by use of a coating material and a heat treatment such as described with respect to the bucket of Fig. 1.

The rim section [0 differs from those of the other previous embodiments shown and described with respect to the seating surface for the cover of the bucket. The inwardly extending flange 80 of the rim section has an inner peripheral surface 82 which is contiguous with the inner cake-shaping surface of the body section. A shoulder formed between the surface 82 and a cylindrical surface 84 having a greater diameter than surface 82 provides a seating surface 85 for the lid 12. The undersurface of the cover 12 is dished out to produce a generally flat-end surface and a rounded edge on the cake, and to form a flange 81 of the cover which is coextensive with the inner surface 82 of the rim section. The flange 81 may be of suflicient width to overlap the adhesive joint between the body section and the rim section at 89. The contour of the lower cake forming surface of the cover is such as to form a cake of similar contour at both ends. For example, the curvature of the surface of thelid at 9| is similar to that of the bucket at 92.

A bucket constructed according to the present invention permits utilization of any high strength material for bucket fabrication regardless of the corrosive properties of the material. Such utilization is achieved by coating the base material used in forming the bucket with a coating material having high corrosion resistance and then by providing a protecting rim of non-corrosive material upon which may be expended therough treatment which accompanies the removing of packages of yarn from buckets in mass manufacturing operations. Moreover, such a rim permits an operator to manually decelerate a bucket from full spinning speed ;to a stop by frictional resistance applied to the rim without damaging the coating of the body section even though the spindle shaft for driving the bucket continues to be driven.

In installations of spinning equipment, it is desirable that the rims of the buckets be provided with holes or grooves through which liquid carried into the bucket may escape from the interior region of the bucket adjacent the seating surfaces for the cover thereof. The surfaces within these escape passageways are among the first of a bucket to be affected by corrosion. In a bucket constructed according to the present invention. such ducts extend through the replaceable rim as hereinbefore shown and described. If the rim becomes dangerously corroded, a new rim is applied to the old body section of the bucket. Thus the more costly portion of the bucket is salvaged for further service.

While preferred embodiments of the invention have been shown and described, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as'defined in the appended claims.

I claim:

1. A spinning bucket comprising a body section 5 having an axis of rotation, a separable rim section having a peripheral surface of greater radius than the exterior surface of the body section. and means for securing the sections together.

2. A spinning bucket comprising a body section of non-corrosion-resistant material and having an axis of rotation, a coating of corrosion-resistant material for the body section, a rim section of corrosion-resistant material, andmeans for securing the sections together.

3. A spinning bucket comprising a body section having an axis of rotation, a separable rim section having a flange which overlaps the exterior surface of the body section, and means for securing the sections together.

4. A spinning bucket comprising a body section having an axis of rotation, a cover, a separable rim section having an inner peripheral surface for positioning the cover laterally with respect to the axis, and means for securing the sections together.

5. A spinning bucket comprising a body section having an axis of rotation, a cover, a separable rim section having inner peripheral surfaces for positioning and centering the cover in a plane normal to the axis, and means for securing the sections to ether.

6. A spinning bucket comprising a body section having an axis of rotation, a cover, a separable the open end of the bucket, and means for securing the sections together.

'7. A spinning bucket comprising a body section having an annular seating surface and a centering surface, a coating of heat-sensitive material for the seating surface in adhesive relationship therewith, and a rim section supported on the body section in coaxial relationship therewith in engagement with the centering surface, said rim section having a mating surface for the seating surface in adhesive relationship with the coating thereof.

8. A spinning bucket of composite construction comprising a body section having an annular seating surface and a centering surface, a coating of corrosion-resistant heat-sensitive material in adhesive relationship with the exterior and interior surfaces of the body section including the seating surface, and a rim section supported on the body section in coaxial relationship therewith in engagement with the centering surface, said rim section having a mating surface for the seating surface in adhesive relationship with the coating thereof.

9. A spinning bucket of composite construction comprising a body section having at least one circular axially-extending flange, the top of said flange defining a seating surface and the side of r the flange defining a circular centering surface.

a coating of corrosion-resistant heat-sensitive material in adhesive relationship with the exterior and interior surfaces of the body section including the seating surface, and a rim section supported on the body section in coaxial relationship therewith, said rim section having a mating surface for the centering surface in engagement therewith and having a mating surface for the seating surface in adhesive relationship with the coating thereof.

10. A spinning bucket as defined in claim 2 wherein the flange has rounded edges.

11. A spinning bucket of composite construction comprising a body section having two concentric flanges which deflne a groove therebetween and seating surfaces along the tops of the flanges, one of said flanges having a side surface defining a centering surface, a coating of heat-sensitive corrosion-resistant material in adhesive relationship with the exterior and interior surfaces of the body section including the seating surface, and a rim section supported on the body section in coaxial relationship therewith in engagement with the centering surface, said rim section having a mating surface for the seating surface in adhesive relationship with the coating thereof.

12. A spinning bucket as defined in claim 4 wherein the flanges have rounded edges.

13. A spinning bucket of composite construction comprising a body section having a circular axially extending flange which defines a seating surface along the top of said flange and a centering surface along the side of the flange, a cover for the bucket, a coating of corrosion-resistant heat-sensitive material in adhesive relationship with the interior and exterior surfaces of the body section includin the seating surface, and a rim section supported on the body section in coaxial relationship therewith, said rim section having a mating surface for the centering surface in engagement therewith and having an annular radially-extendingsurface for engaging an outer annular portion of the seating surface, said cover having an annular marginal radially-extending surface for engaging the inner annular portion of the seating surface.

14, A spinnin bucket of composite construction comprising a body section having an annular seating surface and a centering surface, a coating of corrosion-resistant heat-sensitive material in adhesive relationship with the interior and exterior surfaces of the body section including the seating surface and excluding the centering surface, and a rim section supported on the body section in coaxial relationship therewith, said rim section having a mating surface in engagement with the centering surface and having a mating surface for the seating surface in adhes'ive relationship with the coating thereof.

15. A spinning bucket of composite construction comprising a body section having a pair of concentric axially-extending flanges, the tops of said flanges defining a seating surface and the side of one of the flanges defining a circular centering surface, a cover for the bucket, a lock ring for securing the cover to the bucket, a coating of corrosion-resistant heat-sensitive material in adhesive relationship with the exterior and interior surfaces of the body section including the seating surface by excluding the centering surface, a rim section supported on the body section in coaxial relationship therewith having a mating surface for the centering surface in engagement therewith and having a mating surface for the seating surface of the outer flange in adhesive relationship with the coating thereof and having an annular surface in adhesive relationship with the coating on an outer annular portion of the seating surface of the inner flange, said cover having an outer .annular marginal surface in non-adhesive relationship with the coating of the inner portion of the seating surface of the inner flange, said rim section being grooved along its inner surface immediately above the cover to receive the lock-ring.

16. A spinning bucket comprising a body section having an axis of rotation, a cover, and a rim section having an inner peripheral surface for positioning the cover laterally with respect to the axis, said rim section having a peripheral axially-extending surface of greater diameter than the peripheral surface of the body section adjacent the rim section for forming the rim section portion which overhangs the body section, and means for securing the sections together.

17. A spinning bucket comprising a body section having an axis of rotation, a cover, and a rim section having an inner peripheral surface for positioning the cover laterally with respect to the axis, said rim section having. an outer axially-extending flange which overlaps a minor portion of the outer surface of the body section, and means for securing the sections together.

18. A spinning bucket comprising a body section having an axis of rotation, a cover, and a separable rim section having an inner peripheral surface for positioning the cover laterally with respect to the axis, said sections having substantially complementary surfaces which extend entirely through the wall of the bucket in a radial direction and are axially spaced from the edge of the rim section which defines the open end of the bucket, said rim section having an outer axially-extending flange which overlaps a minor portion of the outer surface of the body section, and means for securing the sections together.

19. A spinning bucket comprising a body section having an axis of rotation, a cover, and a rim section having an inner peripheral surface for engaging a peripheral surface of the cover and positioning the cover laterally with respect to the axis, said sections having engaged mating surfaces of revolutions which extend entirely through the wall of the bucket and are spaced 10 No references cited.