US3047250A - Reel construction - Google Patents

Description

July 31, 1962 T. v. SAETHER I REEL CONSTRUCTION 6 Sheets-Sheet 1 Filed June 23, 1961 July 31, 1962 T. v. SAETHER 3,047,250

REEL CONSTRUCTION Filed June 23, 1961 6 Sheets-Sheet 2 I 98 f/nwt'art' WOZQS.

July 31, 1962 T. v. SAETHER REEL. CONSTRUCTION 6 Sheets-Sheet 3 Filed June 23, 1961 July 31, 1962 T. v. SAETHER 3,047,250

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y W M Wafer/7 ys REEL CONSTRUCTION 6 Sheets-Sheet 6 Filed June 23, 1961 f'Zl GI'IZ'OF'J Tore 1/. Seed/ml; 49 MM fitter/249s 3,947,250 Patented July 31, 1962 3,047,250 REEL CONSTRUCTIGN Tore V. Saether, Auburn, ind, assiguor to Van Norman Industries, lino, Garrett, Ind, a corporation of Massachusetts Filed June 23, 1961, Ser. No. 119,088 12 Claims. (Cl. 242-77) This invention relates generally to reels for accommodating elongated material, such as wire, cable, strip material, etc., and more particularly to a take-up reel of the type having a removable flange.

In the past wire and other elongated material has been initially wound and shipped on reels made of wood or metal. Such reels were expensive thus necessitating the return of the empty reels from the wire consumer to the wire manufacturer, and thus the round trip transportation cost for reels, i.e. full of wire to the consumer and empty back to the manufacturer, has added appreciably to the cost of the wire to the consumer. Because of this reel transportation cost, it is now the practice to remove the coil of wire from the reel upon which it is initially wound and to ship the coil, suitably bound, to the consumer who then places the coil upon a suitable pay-off reel for use. In accordance with the present practice, take-up reels have been provided having radial slots formed in their heads or flanges with cooperating axial slots formed in the barrel to permit binding the coil of wire with suitable strapping while the coil is still on the take-up reel. Such reels further have a removable flange which then permits removal of the bound coil of wire from the reel for shipment to the consumer. In such prior take up reel constructions, the removable flange has been secured to the reel by means of a conventional nut which engages suit-able threads, generally on the arbor tube.

in the process of producing an annular coil of wire on a take-up reel, lateral forces are created during the winding operation which are proportional to the tension employed during winding and inversely proportional to the cross-section of the wire, these forces being exerted laterally upon the flanges of the reel. Other variables such as the dilferential in temperature of the wire at the time of winding and at the time of the flange removal will effect the magnitude of these lateral forces. In removing the flange from the reel for removal of the resulting annular package of wire, the nut must be unthreaded from the cooperating threads on the arbor tube. In prior take-up reel constructions known to the present applicant, removal of the nut has frequently been most difficult if not in fact impossible due to the above described lateral forces exerted on the flanges during the winding operation. This difliculty in removing the nut and in turn the removable flange has frequently resulted in excessive downtime and loss of production. It is therefore desirable to provide a take-up reel construction having a removable flange and in which the lateral-forces exerted on the flanges during the winding operation do not hinder the removal of the flange.

It is accordingly an object of my invention to provide an improved reel having a removable flange.

Another object of my invention is to provide animproved take-up reel for elongated material and having a removable flange in which the lateral forces exerted on the flanges during the winding operation do not hinder removal of the removable flange.

A further object of my invention is to provide an improved take-up reel having a removable flange and in which minimum effort is required to remove the flange rev gardless of the lateral thrust exerted thereon by the material on the reel.

Further objects and advantages of my invention will become apparent by reference to the following description and the accompanying drawings, and the features of novelty which characterize my invention will be pointed out with particularity in the claims annexed hereto and forming a part of this specification.

My invention in its broader aspects provides a reel for elongated material having a first annular flange member and an axially extending tubular member coaxial with the first flange member and having one end secured thereto. A second annular flange member is provided axially spaced from the first flange member and coaxial therewith, the second flange member being removably positioned on the tubular member adjacent the other end thereof. An annular locking member is provided threadingly engaging one of the tubular and second members for axial movement with respect thereto, the locking member having an annular tapered surface spaced radially from the tubular member. One of the tubular and second members has an annular groove formed therein, the groove having tapered surfaces defining generally a V. A plurality of locking segments are provided normally positioned between the locking member tapered surface and the second groove and respectively having first surfaces normally seated in the groove and engaging the surfaces thereof. The locking segments respectively have other surfaces normally engaging the locking member tapered surface so that the locking member exerts a force on the segments having an axial component and a radial component thereby normally locking the second flange mem her on the tubular member. The second flange member has a portion exerting an axial force on the segments responsive to the material on the reel exerting lateral force on the flange members, such axial force being in the direction opposite from the axial force component exerted by the locking member. The first surfaces of the locking segments cooperate with the groove surfaces to tend to move the segments radially out of the groove responsive to the force exerted thereon by the second flange member portion, the other surfaces of the segments cooperating with the locking member tapered surface.

to assist removal of the locking member responsive to the radial movement of the locking segments. H In the preferred embodiment of my invention, a reel is provided with a barrel coaxial with the tubular member for winding the material thereon, the barrel being formed of a plurality of arcuate segments. The first and second flange members have annular portions thereon respectively normally supporting the barrel segments in a first radially outer position, and means are provided movably attaching the barrel segments to the tubular member and permitting movement of the barrel segments to a second radially inner position when the second flange member is removed from the tubular member.

In the drawings:

FIG. 1 is a side view partly in section and partly broken away, illustrating a take-up reel in accordance with my invention;

FIG. 2 is an end view, partly in section and partly broken away, further illustrating the reel of my invention; 7

FIG. 3 is a fragmentary cross-sectional view illustrating the locking device for the removable flange of the take-up reel of my invention;

FIG. 4 is a fragmentary cross-sectional view further illustrating the locking device of FIG. 3;

FIG. 5 is an end view showing the locking segments employed in the device shown in FIGS. 3 and 4;

FIG. 6 is a view taken along the line 6-6 bf FIG. 3;

FIG. 7 is a cross-sectional view showing the barrel collapsing arrangement of the improved take-up reel of my invention;

FIG. 8 is a fragmentary view, partly in section and partly broken away, taken generally along the line 88 of FIG. 7 and showing the removable flange secured to the arbor tube and with the barrel segments in their outer position; and

FIG. 9 is a fragmentary cross-sectional view showing the barrel segments of FIGS. 7 and 8 in their collapsed position.

Referring now to FIGS. 1 and 2, there is shown a take-up reel, generally identified at 10, having fixed head or flange 12, a removable head or flange 14 and a barrel 16 upon which a coil of wire 18 is wound between flanges 12 and 14. In order to provide for banding the coil of Wire 18 while it is still on the spool 10 in order to permit its removal therefrom, flanges 12 and 14 are provided with a plurality of radially extending elongated slots 20 and the barrel 16 is provided with a corresponding plurality of axially extending grooves 22 which respectively communicate with the radial slots 20 in the flanges 12 and 14. Thus, when the coil of wire 18 has been wound on the barrel 16, banding straps 24 may be respectively passed through the grooves 22 in barrel 16 under the bottom layer of turns of the coil 18 and then brought upwardly through grooves 22 and across the outer layer of turns of the coil 18 to be suitably connected, as at 26. The removable flange 14 is then removed from barrel 16 as will be hereinafter more fully described, the barrel 16 preferably collapsed, and the thus bound coil of wire 18 removed from the spool 10 for shipment to the consumer.

Referring now to FIGS. 3, 4, and 6, an arbor tube 28 is provided coaxially disposed within the barrel 16 and the removable flange 14 is secured thereto by means of locking assembly 30. Locking assembly 30 includes a housing member 32 having an annular outer surface 34 and an annular flange 36 to which the flange 14 is secured by means of a plurality of suitable threaded fasteners 38.

Housing 32 has an annular recess 40 extending therein from its end 42, recess 40 being defined by outer wall 44 and end wall 46. It will be seen that the recess 40 in the housing 32 surrounds the end 48 of arbor tube 28.

The outer wall 44 of recess 40 is internally threaded, as at 50, and an annular locking member 52 is provided disposed in the recess 40 and having an externally threaded portion 54 threadingly engaging the internal threads 50 of recess 40. Looking member 52 has a plurality of spaced apart openings 56 formed in its end 58 which are adapted to be engaged by a suitable spanning wrench for turning locking member 52 thereby to thread the same axially inwardly or outwardly with respect to end 48 of arbor tube 28, as shown by the arrows 60. Locking member 52 has a locking surface 62 which tapers outwardly from its inner surface 64 toward its end 66, i.e. toward the end wall 46 of recess 40.

The outer peripheral surface 68 of end 48 of arbor tube 28 has an annular groove 70 formed therein defined by tapered surfaces 72 and 74 mutually defining a generally V-shaped configuration, as shown. It will be observed that in the position of the locking assembly shown in FIG. 3, groove 70 is generally in radial alignment with the locking surface 62 of locking member 52.

A plurality of locking segments 76 are provided disposed around end 48 of arbor tube 28 between groove 70 and locking surface 62 of locking member 52. Locking segments 76 respectively have tapered surfaces 78 and 80 which respectively slidingly engage the tapered surfaces 72 and 74 of groove 70 inthe position of the assembly shown in FIG. 3. Locking segments 76 further have tapered outer surafces 82 which respectively slidingly engage the tapered locking surface 62 of locking member 52.

Housing 32 to which flange 14 is secured is slidably assembled on arbor tube 28 and is restrained against rotation with respect thereto by means of a suitable key 4 84. An arcuate groove 86 is formed in the side 88 of each of the locking segments 76, the arcuate grooves 86 forming a continuous annular groove in which a suitable spring 90 is seated, as shown. Spring 96 urges or biases the locking segments 76 radially outwardly.

The threaded portion 54 of locking member 52 is axially shorter'than threaded portion 50 and is spaced from end 58 of locking member 52 by an outer wall 92 which defines an annular space 94 with the internal threads 50 of the housing 32. An annular retainer ring 96 is seated in a suitable annular groove 98 in the end 42 of housing 32 and is secured thereto by a plurality of suitable threaded fasteners 100. Retainer ring 96 extends into the annular space 94 and is adapted to engage the end or shoulder 102 of threaded portion 54 thereby to limit the axial movement of locking member 52 outwardly, i.e. away from the end wall 46. Thus, it will be seen that the locking member 52 cannot be readily removed from the lockingassembly 30 without first removing the retaining ring 96.

Flanges 12 and 14 respectively have annular tapered surfaces 104 and 106 formed on their adjacent sides or faces 108 and 110, surfaces 104 and 106 being respectively coaxial with and radially outward from the arbor tube 28. Barrel 16 is formed of three arcuate segments 112, 114 and 116 (FIG. 7) respectively having their ends tapered to engage the tapered surfaces 164 and 106 of flanges 12 and 14. It will thus be seen by additional reference to FIG. 8 that when the reel is completely assembled, segments 112, 114 and 116 which form barrel 16 are supported by the tapered surfaces 104 and 106 of flanges 12 and 14.

It will be seen that the flange 14 is secured to arbor tube 28 by rotating locking member 52 so as to thread the same inwardly toward the end wall 46 of housing 32, the sliding engagement of the tapered surface 62 of locking member 52 with the tapered outer surfaces 82 of locking segments 76 forcing the segments radially inwardly so that inner tapered surfaces 78 and 88 respectively engage the tapered walls 72 and 74 of the groove 70.

It will now be seen that when the coil of wire 18 is wound on the barrel 16, a lateral force, as shown by the arrow 118 is exerted on the flange 14, this lateral force in turn being transmitted through the housing 32 and the end wall 46 thereof to the faces 88 of the locking segments 76. It will be seen that the force exerted by the tapered locking surface 62 of locking member 52 on the tapered outer surfaces 82 of the locking se ments 76 may be resolved into two components, i.e. an axial component of force in the direction shown by the arrow 120 and a radial component of force as shown by the arrow 122. It will further be seen that the force exerted by the end wall 46 of the sides 88 of the locking segments 76 as a result of the lateral forces 118 exerted by the coil of Wire 18 on the flanges 12 and 14, as shown by the arrow 124, is opposite from the axial component of force 120. It will finally be seen that the provision of the tapered wall 74 of groove 70 resolves the axial force 124 exerted by end wall 46 on faces 88 of locking segments 76 into a radial component as shown by the arrow 126. The angle of the tapered wall 74 of groove 70 is such that the radial component of force 126 acting upon the segments 76 combined with the radially outward force exerted by the spring 90 is sufficiently large to tend to move the segments 76 radially outwardly as the locking member 52 is threaded axially outwardly, i.e. away from end wall 46. In a specific embodiment of my invention, the angle between surfaces 74, and a line perpendicular to the center line of the arbor tube 28 is 25 and the included angle between surfaces 74, 88 and 72, 78 is Inner radius 81 of segments 76 is preferably the same as the radius of the outside diameter of arbor tube 28 in order to prevent scoring of the arbor tube when the segments are released from groove 70.

It will now be seen that the lateral forces 118 exerted on flanges 12 and 14 during the winding of coil 18 on barrel 16 are employed to assist removal of the locking member 52 and in turn removal of the removable flange 14 from the arbor tube 25. The radially outward movement of the locking segments 76 is controlled by the tapered surface 62 of the locking member 52 and continued axially outward threading of the locking member 52 results in outward movement of locking segments 76 away from the arbor tube 28 until they finally completely clear the groove 70, as shown in FIG. 4. When the locking segments 76 have cleared the groove 70, the locking assembly 30 with the flange 14 secured thereto may then be removed completely from the end 48 of the arbor tube 28.

In order to retain the locking segments 76 in the housing 32 when the same is removed from the arbor tube 28, and further to guide their radial movement, a plurality of elongated slots 128 are provided in end wall 46 of housing 32, slots 128 being parallel with the radial movement of the segments '76. Pins 131) respectively extend through the slots 128 and into the sides 88 of the locking segments 76 thereby guiding the radial movement of the segments 76 and retaining the same in recess 40 of housing 32 even though locking member 52 may be completely removed therefrom. When the removable flange 14 is removed from the arbor tube 28, all of the parts which comprise the locking assembly 30 remain attached thereto rather than being separated as in the case of prior consrtuctions and thus subject to being lost or becoming dirty.

Referring now to FIGS. 7, 8 and 9, it will be comprehended that the coil of Wire 18 is tightly wound on the barrel 16 and that its removal therefrom even with the flange 14 removed from the spool, would be difficult unless the barrel were collapsed. Thus, barrel 16 is formed, as previously indicated, of three arcuate segments 112, 114 and 116. Each of the barrel segments 112, 114 and 116 has a pair of elongated supporting members 132 and 134 secured thereto, as by suitable threaded fasteners 136, and extending inwardly therefrom, supporting members 132, 134 being respectively parallel with the arbor tube 28 as best seen in FIG. 7. A pair of guide members 138 and 149 are secured to the arbor tube 28 in spaced apart relationship, as shown. Each of the elongated arbor tube supporting members 132 and 134 has a pair of elongated slots 142 and 144 formed therein, slots 142 and 144 having their bottom ends 146 and 148 respectively adjacent their bottom edges and tapering upwardly toward flange 12. t

The guiding members 138 and 141 respectively have transversely extending guide pins 152' secured thereto, the pins 152 extending through the elongated slots 142 and 144 in the support members 132, 134.

It will be seen that with the arbor tube segments 112, 114, 116 in their outer positions, i.e. with flange 14 assembled on arbor tube 28, the guide pins 152 are respectively at the bottom ends 146 and 148 of the guide slots 142 and 144. Referring now to the FIG. 9, it will be seen that when the flange 14 is removed from the arbor tube 28 and particularly when an eflort is made to remove the coil of wire 18 from the barrel 16, the segments 112, 114 and 116 collapse axially as shown by the arrow 15d and radially inwardly as shown by the arrow 156, this movement being guided by means of the guide pins 152 in the slots 142, 144 until the barrel segments reach their inner positions with the guide pins 152 at the upper-ends of the slots 142, 144.

It will be seen that the fixed flanged 12 is permanently secured to arbor tube 28 by means of suitable threaded fasteners 1S5- engaging annular flange 156 formed on end 158 of the arbor tube 28. In assembling the reel, the flange 12 is preferably horizontally disposed upon a flat surface such as the floor, with the arbor tube 28 and the barrel segments 112, 114 and 116 thus extending vertically upwardly. The weight of the barrel segments will thus cause them to fall downwardly from their collapsed position as shown in FIG. 9, this downward movement being guided by pins 152 in slots 142, 144 of the support members 132, 134 so that the downward movement of the barrel segments is accompanied by a radial outward movement until ends 161 of the barrel segments engage the tapered surface 104 of flange 12, as seen in FIG. 8. Flange 14 is then assembled on the other end of the spool with its tapered surface 166 engaging the other ends 162 of the barrel segment 112, 114, 116. Locking member 52 is then threaded axially inwardly, i.e. toward .end wall 46 of housing 32 thus forcing locking segments 76 radially inwardly into engagement with the groove 70. The assembled spool may then be uprighted and positioned on suitable winding apparatus for winding the wire thereon to form the coil 18.

It will be seen that I have provided an improved takeup reel construction incorporatnig a removable flange and collapsible barrel in which the locking member may ,be turned with a minimum of effort regardless of the amount of thrust exerted on the flange thus to permit ready removal of the removable flange.

While I have illustrated and described a specific embodiment of my invention, further modifications and improvements will occur to those skilled in the art and I desire therefore in the appended claims to cover all modifications which do not depart from the spirit and scope of my invention.

What is claimed is:

1. A reel for elongated material comprising: a first annular flange member; an axially extending tubular member coaxial with said first flange member and having one end secured thereto; a second annular flange member axially spaced from said first flange member and coaxial therewith, said second flange member being removably positioned on said tubular member adjacent the other end thereof; an annular locking member coaxial with said tubular member and threadingly engaging one of said tubular and second members for axial movement with respect thereto, said locking member having an annular tapered surface spaced radially from said tubular member, one of said tubular and second members having an annular groove formed therein, said groove having tapered surfaces defining generally a V; and a plurality of locking segments normally positioned between said locking member tapered surface and said groove and respectively having first surfaces normally seated in said groove and slidingly engaging said sur faces thereof, said locking segments respectively having I other surfaces normally slidingly engaging said locking member tapered surface whereby said locking member exerts a force on said segments having an axial component and a radial component thereby normally locking said second flange member on said tubular member, said second flange member having a portion exerting an axial force on said segments in a direction opposite from said axial force component responsive to said material on said reel exerting lateral force on said second flange member; said first surfaces on said segments cooperating with said groove surfaces to tend to move said segments radially out of said groove responsive to said force exerted thereon by said second flange member portion to permit removal of said locking member and second flange member.

'2. A reel for elongated material comprising: a first annular flange member; an axially extending tubular member coaxial with said first flange member and having one end secured thereto; a second annular flange member axially spaced from said first flange member and coaxial therewith, said second flange member having a portion'with a center opening and with the other end of said tubular member normally extending therethrough whereby said second flange member is remov- 7 ably mounted on said tubular member, said second flange member having an annular recess defined by a wall extending axially therein from its side remote from said first flange member said recess being coaxial with said tubular member; an annular locking member in said recess threadingly engaging said wall for axial movement; said locking member having an annular surface which tapers outwardly toward said second flange portion, said surface being coaxial with and radially spaced from said other end of said tubular member; said other end of said tubular member having an annular groove formed in its outer surface, said groove being formed by two tapered surfaces defining generally a V; and a plurality of locking segments disposed around said other end of said tubular member and normally between said locking member tapered surface and said groove, said segments respectively having inner surfaces normally seated in said groove and slidingly engaging sai dsurfaces thereof, said segments respectively having outer surfaces normally slidingly engaging said locking member surface whereby said locking member exerts force on said segments having an axial component toward said first flange member and a radially inward component thereby normally locking said second flange member on said tubular member; said second flange member portion normally engaging said segments and applying axial force thereon in a direction opposite from said axial force component responsive to said material on said reel exerting lateral force on said second flange member, said inner surface of said segments cooperating with said groove surfaces to tend to move said segments radially outwardly out of said groove responsive to said force exerted thereon by said second flange member portion to permit removal of said locking member and second flange member.

3. The combination of claim 2 further comprising means normally biasing said segments radially outwardly.

4. The combination of claim 2 further comprising means limiting axial movement of said locking member in a direction away from said second flange member portion.

5. The combination of claim 2 further comprising a barrel coaxial with said tubular member and normally extending between said flange members for winding said material thereon.

6. The combination of claim 2 wherein the surface of said groove toward said other end of said tubular member has a greater taper than the other surface of said groove.

7. The combination of claim 2 further comprising a barrel coaxial with said tubular member for winding said material thereon, said barrel being formed of a plurality of arcuate segments, said first and second flange members having annular portions thereon respectively normally supporting said barrel segments in a first radially outer position, and means movably attaching said barrel segments to said tubular member and permitting movement of said barrel segments to a second radially inner position when said second flange member is removed from said tubular member.

8. A take-up reel for elongated material comprising a first annular flange member; an axially extending arbor tube coaxial with said first flange member and having one end secured thereto; a second removable flange member normally axially spaced from said first flange member and coaxial therewith, said removable flange member having an annular coaxial recess extending axially therein from its one side remote from said firs-t flange member, said recess being defined by an outer wall and an annular end wall, said end wall having a center opening with the other end of said arbor tube normally extending therethrough in sliding relationship whereby said removable flange is removably positioned on said arbor tube, said outer wall normally surrounding said other end of said arbor tube and being radially spaced therefrom; an annular locking member in said recess having an inner surface surrounding said other end of said arbor tube and an outer surface threadingly engaging said outer wall for axial movement toward and away from said end wall, said locking member having an annular surface which tapers outwardly from said inner surface toward the end thereof adjacent said end wall, said tapered surface being coaxial with and radially spaced from said arbor tube; said other end of said arbor tube having an annular groove formed in its outer surface normally in radial alignment with said locking member tapered surface, said groove being formed by first and second tapered surfaces defining generally a V, the first tapered surface being adjacent said end wall of said recess and having less slope than said second tapered surface; a plurality of locking segments in said recess disposed around said other end of said arbor tube and normally between said locking member tapered surface and said groove, each of said locking segments having first and second inner tapered surfaces respectively normally slidingly engaging said first and second tapered surfaces of said groove, each of said segments having an outer tapered surface normally slidingly engaging said tapered surface of said locking member whereby said locking member exerts force on said segments having an axial component toward said end wall and a radially inward component thereby normally locking said removable flange member on said arbor tube; a barrel coaxial with said arbor tube and formed of a plurality of arcuate segments, said first and removable flange members respectively having outwardly tapering annular surfaces on their adjacent faces, said last-named tapered surfaces being coaxial with and radially outwardly from said arbor tube, the ends of said barrel segments being outwardly tapered and normally respectively supported on said last-named tapered surfaces on said flange member; said end wall of said recess in said removable flange member normally engaging said locking segments whereby coiling of said material on said barrel between said flange members causes said end wall to apply axial force on said locking segments in the direction opposite from said axial force component exerted by said locking member, said second tapered surfaces of said locking segments and groove cooperating to tend to move said locking segments radially outwardly responsive to said force exerted thereon by said end wall to permit removal of said locking member and removable flange, each of said segments having a groove in a side thereof, said lastnamed grooves defining an annular groove and an annular spring in said grooves normally biasing said locking segments radially outwardly.

9. The combination of claim 8 wherein said locking member has a threaded portion on its outer surface spaced from the other end thereof remote from said end wall and wherein said outer wall of said recess has a threaded portion substantially longer than the threaded portion of said locking member and terminating adjacent said one side of said removable flange member, said outer surface of said locking member intermediate said threaded portion thereof and said other end thereof defining an annular space withsaid threaded portion of said outer wall of said recess, and further comprising an annular ring secured to said removable flange member adjacent said one side thereof and extending into said annular space for engaging said threaded portion of said locking member thereby to limit its axial movement away from said end wall.

10. The combination of claim 8 wherein said removable flange member has a plurality of elongated slots therethrough communicating between its side facing said first flange member and said recess, said slots respectively corresponding to said locking segments and being parallel with said radial movement thereof; and pins respectively secured to said segments and disposed in said slots for guiding said movement of said locking segments and retaining the same in said recess.

11. The combination of claim 2 further comprising a barrel coaxial with said tubular member for winding said material thereon, said barrel being formed of a plurality of arcuate segments having inner and outer surfaces; said first and second flange members respectively having outwardly tapering annular surfaces on their adjacent faces, said last-named tapered surfaces being coaxial with and radially outwardly from said tubular member, the axial ends of said barrel segments being outwardly tapered and normally respectively supported in a first outer position on said last-named tapered surface, at least one elongated supporting member secured to the inner surface of each of said barrel segments and extending inwardly therefrom, each of said supporting members having an elongated slot which is inclined upwardly toward said one flange member, and pins secured to said tubular member and respectively extending into each of said elongated slots, said elongated slots and pins cooperating to retract said barrel segments to second inner positions when said second flange member is removed from said tubular member.

12. The combination of claim 8 wherein said barrel segments have inner surfaces, and further comprising a pair of elongated supporting members respectively having top and bottom sides and secured adjacent their top sides to the inner surface of each said barrel segment and ex I 19 tending inwardly therefrom, a pair of axially spaced apart guide members secured to the outer surface of said arbor of, said elongated slots and pins cooperating to retract said barrel segments to second inner and axially displaced positions when said removable flange mexnber is removed from said arbor tube.

References Cited in the file of this patent UNITED STATES PATENTS Meisel May 3, 1904 Cost Mar. 20, 1906 Williams Apr. 24, 1951 Jones Feb. 14, 1961

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