US2679988A

US2679988A - Bobbin

Info

Publication number: US2679988A
Application number: US299527A
Authority: US
Inventors: Rodney A Morgan
Original assignee: Spaulding Fibre Co Inc
Current assignee: Spaulding Fibre Co Inc
Priority date: 1952-07-18
Filing date: 1952-07-18
Publication date: 1954-06-01
Anticipated expiration: 1971-06-01

Description

A VFIG 3.

' INVENTOR. @00A/EVA. MORGAN ATTORNEYS' Patented June 1, 1954 BOBBIN Rodney A. Morgan, East Aurora, to Spaulding Fibre Company,

N. Y., assigner Inc., Tonawanda,

Application July 18, 1952, Serial No. 299,527

6 Claims.

This invention relates to bobbins or spools for Winding thread, yarn and like filaments. The invention has particular relationship to bobbins or spools of considerable size wherein the central cylindrical or core portion of the spool and the ends or heads of the bobbin or spool comprise separate individually fabricated parts assembled in a rigid manner to form a unitary bobbin of rigid and durable construction.

Bobbins or spools of the general type here under consideration are widely used in various phases of the textile industries and areV subject to quite severe use so that rigidity and strength and long-wearing life are primary considerations in the design and construction of bobbins or spools of this class. Another important consideration is dimensional accuracy and concentricity of the finished bobbin so that it turns in a free and well-balanced manner when in use. Since these bobbins are used in great number, economy of manufacture consistent with the desired structural properties is an important consideration.

The bobbin of the present invention is novel in design and construction and possesses an unusual combination of properties which are important and desirable in a device of this class. In addition to being of accurate and highly rigid and durable construction, the bobbin ofthe present invention is economical to fabricate and assemble and, in finished form, is smooth and free of irregularities or protuberances. Thus the bobbin of the present invention presents no portions which are apt to snag or catch yarn or other laments wound thereon or used therewith and will not abrade or otherwise harmfully engage or act upon the strands of yarn or other filaments or threads with which the bobbin is used.

A further advantage of the bobbin of the present invention resides in the fact that the qualikties mentioned above, particularly the quality of rigidity and strength, are attained in a bobbinof extremely light Weight. It is well known that the abusive and destructive treatment which bobbins or spools of this class are subjected to in use in textile mills and like industries neces- A sitate extremely rigid and durablebobbin constructions which in the past have usually been attained only by expensive design and manufacturing processes, such expense being an extremely important consideration in view of the great number of bobbins or spools which are employed in many of the textile arts as an everyday necessity.

The bobbin of the present invention comprises an assembly which is brought together in nal form without the necessity for special gaging devices and still produces a resultant bobbin of uniform and maximum mass product accuracy, well within the prescribed tolerances which are conventional in devices of this class.

Other objects and advantages incident to the manufacture and use of the bobbin or spool of the present invention will occur to those skilled in the art from a consideration of the following specication and the accompanying drawing which set forth in detail a single practical embodiment of the principles of the present invention. It will be understood, however, that the form thus set forth is by way of example only and that certain mechanical modifications may be made without departing from the fundamental principles of the present invention and the scope thereof is not to be considered as limited otherwise and as defined in the appended claims.

Fig. 1 is a longitudinal cross-sectional View through one form of the bobbin of the present invention;

Fig. 2 is a detailed perspective view of the central barrel or supporting portion of the bobbin 0f Fig. 1;

Fig. 3 is a fragmentary view of one end of the bobbin of Fig. 1 viewed as in Fig. 1 and showing one of the end plug or bearing members in the process of assembly; and

Fig. 4 is a detailed perspective view of one of the end plug or bearing members.

Like characters of reference denote like parts in the several figures of the drawing and the numeral I0 designates a metallic tubular member which forms the central support for the entire bobbin and is referred to herein as the barrel element. In Fig. 2 barrel element l0 is shown as a straight tubular member in the form in which it is initially assembled with the other components of the bobbin. The manner in which the ends of the barrel element l0 are nally formed during assembly of the device will presently appear.

In the fabrication of the bobbin shown herein by way of example, a phenolic resin impregnated paper material is preferably wound firmly and securely directly upon barrel element Ill, after the barrel element is cut to length and after certain ears described later herein have been formed in the barrel element, and this prelimlnary assembly is then heated to set up the resin. The surface is then ground or otherwise finished to produce a smooth and continuous cylindrical distinguished from prior art devices wherein the phenolic resin member has been separately molded in tubular form.

A pair of disc-like annular end-orhead 4elements I2 and I3 are in the presentfinstance made.;

from thermo-setting resin material and are provided with central apertures which seat. snugly over the ends of barrel element Iii and the head elements I2 and I 3 generally abut the ends-of the phenolic layer I I, there being a thin annular gasket or cushioning member between eachfof the head elements I2 and I3 andthe adjacent end of the phenolic layer .l I. These gaskets or sealing rings are designated III .and l5, respectively, in Figs. 1 and 3.

It will be noted that tha-outer end faces-of head elements I2 and AIi! are provided with annular grooves I5 and I1 as shown in Fig. 1 and, subsequent to assembly of the head members I2 and I3 on the ends of barrel IiLthe outer ends of the barrel are spun or otherwise formed or upset in a partially curledformation as indicated at l and I9 in Fig. 1whereby these end portions of barrel element IB bear firmly against the outer faces of the head elements I2 and I3 with the extreme outer edge portions of barrel element I0 extending into thegrooves I6 and I1 to provide smooth finished end surfaces which are not apt to snag or catch upon threads or other filaments and `which present no sharp edges at any point.

Before the Vphenolic layer I I` is. wound` upon barrel element I0, thelatter is formed'with inwardly struck ears as shown in Fig. 2.; Such ears comprise'a pairof outer circular rowsY of ears, designated and 2| and `a pair of inner circular rows of ears designated 22 and 23,.Y It will be noted that the ears of theouter rows 2Il and 2I are so formed that theirinner free end portions are directed radially inwardly and tof ward the center of the barrelelement I0 where-v as the ears of the inner rows 2.2 and 23 are di-f rected radially inwardly and sothat their free-v end portions face toward the ends of the barrel element Ill.v

The ears 20. through 23 are provided for locat ing and securingend bearing or bushing members in the nature of cylindrical plugsdesignated 28 and 21. Themanner in which the ears 20 through 23 are die-formed in the barrel element I0 insures their accurate and-precise location relative to each other and relative to the barrel element In generally, so that the disposi-V tion of these ears automatically insures accurate location of the end plug or bearing members 26.

and 21 and thus absolutely `assures the maintenance of axial dimensions of the device in aA simple and economical manner and without the necessity for any further gaging, locating, or..

The manner in which the end

plugor bearing members

26 and 21 are assembled is clearly shown in the detailed view, Fig. 3, wherein end plug member 21v is being pushed into` the interior. vof.

1i barrel element I0. The

end plug members

26 and 21 are provided with annular

peripheral grooves

28 and 29, respectively. Referring again to Fig. 3, the plug 21 will cam its way past the ears 2| of the outer row because of the direction in which those ears face but the inner end of plug 21 will abut against the free ends of the ears 23 of the adjacent inner row.- At the same time, the ears of the outer row 2l will snap into groove 29 of plug member 21 and the inner free ends of the ears of row 21 will then abut the inner end or shoulder of annular groove 29 as shown clearly in Fig. 1, the plug or bearing member 21 being thus-secured against axial displacement and..being.insured of accurate axial location relative to the barrel element It) and, by the same token, relative to the entire bobbin assembly: The other end plug or bearing member 26 is assembled in the same manner and the two plug or bearing

members

26 and 21 are provided with suitable `central .boresv or apertures for-iassembly upon supporting spindles` -or .shafts ing conventional manner.

It will be .seen/from the. foregoing thatfthei-a metallic barrel element Iii, inthe presentinfv stance formed of aluminum .,tubing, vcompriseswv the principal structural componentofthefmished bobbin since it vsupports and .provides .a rigid backing for .element II, retainsthe head y elements I2 and It, provides themeans for seat;-

ing, locating yand retaining-fthe plug or bearing;y

member i I.

of the bobbin is controlled by and stems frontv the barrel element IIL The manner in which the bobbin lof the present invention is constructed permits -the plug or:- bearing members to.be located-near the outer ends of the bobbin or. even in a position vwhere they protrudebeyond thebobbin properfif der.

sired, since the plug or bearing members vmaybe inserted after the ends'of thefbar-rel.. element :are

spun over the head elements and :then will notV` interfere with the spinning'tool .or'the-spinning operation, no matter where fthe-plugs arefulti-- mately located..-

Since. .the ears lare formed in. thebarrel :ele-:, ment I0, the phenolic'tubeV .II-fmay-be: applied.:

subsequently and the plugmembers may bein-.c

serted afterall of the-preliminary;fabricating;v

and assembly operationsggfincluding thez'assem blingand securing of the headv elements. Inadei l dition to providing the necessary',bearingsfor` rotatably supportingthe bobbin, the plug lmemV bers internally reinforcenthe aluminum barrel.;A element against-` crushingor; other-1 deformation...

and also preventV `loosening 1or:. runspinningf- 'of the endformations YIll and .i9, since1such loosen-f1. ing.' or unspinn-ing? can .1 normally.- only.y ioccur.' with a reduction in `diameterofthe .end .portions-.i

of lthe barrel element l0. What is claimed; isn.

body member, a circular'. series .of internal-.een- .1 trally facing abut1nents;sformed ina :saidubody:

member adjacent each :endthereof,i;andz;a ciracular seriescof internal outwardly facing .abut-1.A ments formed in. said body; memberainwardlyxofz.:

each of the first two mentioned. seriesof abuter.- ments, an imperforate continuous non-metallic:4 outerv surface layer overlying: nsaid tubular body;

member and terminating short of the opposite,

ends Ithereof y .a pair .l of z head elements providing` 5 radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to llt snugly thereover 1n substantial abutment with the ends of said surface layer element at their inner faces, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formed radially outwardly and thence inwardly toward said grooves to terminate substantially therein, and cylindrical end bearing members each having a central bearing opening and an outer peripheral groove, each end bearing member fitting snugly into an open end of said body member with its inner end against the abutments of the adjacent inner series and with the inner shoulder of its peripheral groove substantially against the abutments of the adjacent first-mentioned circular series.

2. In a bobbin, a metallic cylindrical tubular body member, a circular series of internal centrally facing abutments formed in said body member adjacent each end thereof, and a circular series of internal outwardly facing abutments formed in said body member inwardly of each of the first two mentioned series of abutments, a pair of head elements providing radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to t snugly thereover, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formed radially outwardly and thence inwardly toward said grooves to terminate substantially therein, an imperforate continuous outer surface layer extending about said tubular body member between said head elements, and cylindrical end bearing members each having a central bearing opening and an outer peripheral groove, each end bearing member fitting snugly into an open end of said body member with its inner end against the abutments of the adjacent inner series and with the inner shoulder of its peripheral groove substantially against the abutments of the adjacent first-mentioned circular series.

3. In a bobbin, a metallic cylindrical tubular body member, internal abutments formed in said body member adjacent each end thereof, and other abutments formed in said body member inwardly of said first mentioned abutments, an imperforate continuous non-metallic outer surface layer overlying said tubular body member and terminating short of the opposite ends thereof, a pair of head elements providing radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to llt snugly thereover in substantial abutment with the ends of said surface layer element at their inner faces, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formed radially outwardly and thence inwardly toward said grooves to terminate substantially therein, and cylindrical end bearing members each having a central bearing opening and an outer peripheral groove, each end bearing member fitting snugly into an open end of said body member with its inner end against said other abutments and with the inner shoulder of its peripheral groove substantially 'against the adjacent first-mentioned abutments.

4. In a bobbin, a tubular body member, internal 'centrally facing abutments formed in said body member adjacent each end thereof, internal outwardly facing abutments formed in saidk body member inwardly of each of the nrst mentioned abutments, an imperforate continuous nonmetallic outer surface layer bonded to said tubular body member and terminating short of the opposite ends thereof, a pair of head elements providing radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to fit snugly thereover in substantial abutment with the ends of said surface layer element at their inner faces, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formed radially outwardly and thence inwardly toward said grooves to terminate substantially therein, and cylindrical end bearing members each having a central bearing opening and an outer peripheral groove, each end bearing member fitting snugly into an open end of said body member with its inner end against the adjacent outwardly facing abutments and with the inner shoulder of its peripheral groove substantially against the adjacent inwardly facing abutments.

f5. In a bobbin, a tubular body member, internal centrally facing abutments formed in said body member adjacent each end thereof, internal outwardly facing abutments formed in said body member inwardly of each of the first mentioned abutments, a pair of head elements providing radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to llt snugly thereover, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formed radially outwardly and thence inwardly toward said grooves to terminate substantially therein, an imperforate continuous outer surface layer extending about said tubular body member between` said head elements, and cylindrical end bearing members each having a central bearing opening and an outer peripheral groove, each end bearing member fitting snugly into an open end of said body member with its inner end against the adjacent outwardly facing abutments and with the inner shoulder of its peripheral groove substantially against the adjacent inwardly facing abutments.

6. In a bobbin, .a tubular body member, internal centrally facing abutments formed in said body member adjacent each end thereof, internal outwardly facing abutments formed in said body member inwardly of each of the ilrst mentioned abutments, an imperforate continuous outer surface layer extending about said tubular body member and terminating short of the opposite ends thereof, a pair of head elements providing radially extending annular flanges at the opposite ends of the bobbin, said head elements having central apertures of substantially the diameter of said body member to fit snugly thereover in substantial abutment with the ends of said outer surface layer at their inner faces, annular grooves in the outer faces of said head elements concentric with and adjacent to said central apertures, the ends of said tubular body member being formech radially outwardly and thenceV inwardly toward said grooves toterminate substantially therein, .and cylindricalr end-bearing members each having. a.. central bearing opening and an outer `peripheral groove, each end bearing memhet fitting snugly `intovan vopen end'of said body memberY with its. inner endlfagainst the` adjacent outwardly facing. abutments and with the inner shoulderi of. its.' `peripheral 1 groove substantially against 4'chey adjacent inwardly. facing. abutments.

Name Date Wheeler Aug. 9, 1892 Number Number 10 Number 8 Name 1 Date` Elledge Aug. 22,' 191.1 Glaser Oct. 7 ,1 1913 Howsam Mayl 3,1932 Benson Sept. 10; 1940 Moss Nov. 9; 1948 Powell Novia, 1949 VlOl'tEIC-:N PATENTS Country Date Great Britain ;Dec. 3,v 18.75 Great.: Britain Dec.. .9, 1948'