US2231122A - Cone holder - Google Patents

Description

Feb. 11, 1941. J. c. HOUCK 2,231,122

coma HOLDER Filed March 2, 1938 Patented Feb. 11, 1941 X UNITED STATES PATENT OFFICE CONE HOLDER Wickham Application March 2, 1938, Serial No. 193,596

8 Claims.

This invention relates to the art of packaging yarn and thread, particularly silk thread, by winding the same on cores commonly known as cones or cops. As known to those skilled in the art, the practice is to form the filamentary material into thread by suitable machinery and then to wind the formed thread into a package upon a central core or cop commonly; formed of some light material such as pressed paper or the like. The cones upon which the thread is to be wound are mounted on driven spindles which are rotated at the appropriate speed to effect the proper winding of the thread thereonto.

In such winding operation it is highly important to insure against relative slipping between the cone and the spindle upon which it is mounted. If the cone slips on the spindle the winding will suffer in consequence due to the resulting irregularity, and the finished package suffers in consequence due to the defects.

The diverse types of spindles employed in the art on the various types of machines necessitated the adoption of difierent expedients for securing the necessary binding engagement between the spindle and the core member or cone upon which the thread is wound. Adapters have been employed, of various forms, and the generally accepted manner of mounting contemplates a frictional engagement between the base portion of the cone and its mounting element which is in turn positioned upon the spindle. This frictional engagement is effected by forcing the cone down onto its mounting element and as cones are used over and over again they become structurally weakened by the repeated forcing action as they are mounted on their holders. In time the cone becomes unserviceable due to structural defects resulting and to an enlargement of the material at the base of the cone which precludes the possibility of the requisite frictional grip on its holders. Such cones must, of course, be discarded and their loss is an economic factor that is of material proportion.

An object of the present invention is to provide an improved holder for cones, cops, and like core members, provided with means operable automatically to insure a positive binding driving engagement between the cone and its holder.

Another object is to provide a cone holder hav- 0 ing a self-contained automatic cone engaging adapted for mounting on a driving spindle and provided with means operable through centrifugal force into positive holding engagement with a cone or similar core member as the spindle is rotated, and which automatically disengages the cones when the rotation of the spindle is stopped.

While the disclosure of this application constitutes an illustrative embodiment in which the invention is reduced to practice, it is to be understood that the structural details of the invention may be varied as desired within limits not inconsistent with the scope of the invention as claimed.

In the accompanying drawing:

Figure 1 is an elevation of a portion of a silk thread forming winding machine and illustrating the service mounting of my improved cone holder with respect to a spindle and cone.

Figure 2 is a top plan view of the holder.

Figure 3 is a bottom plan view thereof.

Figure 4 is substantially a side elevation of the holder sectioned on the line 4-4 of Figure 2.

Figure 5 is a perspective View of one of the centrifugal clutch dogs employed.

Figure 6 is a perspective view of a modified form of centrifugal clutch dog.

In the illustrated embodiment the holder comprises a body 6 of suitable material, preferably a casting of light weight metal alloy, formed as a truncated cone having an annular foot flange 1 at its base. The conical taper of the holder corresponds to the conventional conical taper of the usual cop or cone core 8 which is employed to hold the thread being wound. The holder is so dimensioned that when a thread holding cone is slipped down over its top the base of the cone seats upon the foot flange I with the inner face of the cone in slight frictional binding engagement with the exterior face of the holder, this engagement being sufiicient to efiect rotation of the cone with the holder in the initial stage of the winding operation.

The holder 6 is provided from top to bottom with an axial bore 9 adapted to take over the blade Illa of a spindle so that in service the foot 4 per face l2 of the holder is flat and somewhat countersunk, as seen in Figure 4, to provide a seat for a purpose to be described. The holder is further provided with an axial recess in its bottom portion and to such degree that the substantially flat bottom face I3 of the holder occupies a plane parallel .to the plane of the top face l2 and appreciably above the plane of the foot flange 1.

The holder is further provided from top to bottom with a plurality of axially extended radial slots l4 which open to the outer face of the holder and which extend radially inward into the material of the holder body between certain of the borings II. The slots M are arranged preferably at equidistantly spaced points in a circumferential series and the radial depth of each slot is such that it extends appreciably into the body of the holder. As seen best in Figure 4, the inner wall l5 of each slot is parallel to the axis of the holder.

Seated on the flat top face l2 of the holder just beneath its upper edge is a split ring l6 which bears against the circumferential inner wall of the holder at this point and which extends across the upper end of each of the slots M, the ring thus providing at each slot a pintle upon which is pivotally suspended a dog I l of the form 'best shown in Figure 5.

Each dog 1-"! corresponds in length to the length of its housing slot, and the thickness of the "dog is less than the width of its slot so that a slight clearance is provided which permits the dog to swing freely in its slot for limited radial oscillation from its point of pivotal connection with the pintle ring l6.

Each dog I! is of L-shaped form, with its short leg 18 being provided with an aperture l9 which receives the pintle ring l6 therethrough at a point sufficiently radially inward of the outer face of the holder to permit free pivotal suspension of the dog within its housing slot. Outward radial movement of the respective dogs I! is limited by the foot flange I which spans the lower ends of the slots M. Each dog I! is provided on its outer edge with a pointed tooth 2| having an inclined riser portion 22 tapered at an angle somewhat approximating the angle of taper'of the holder. The tooth 2| projects laterally from the outeredge of the dog and radially -of the holder.

As shown best in Figure 4, it will be seen that in each .of the slots M the dog H hangs normally in a position of rest in which the tooth 2| is housed entirely within the slot and inwardly of the circumferential surface of the holder face.

This is due to the fact that as the inner wall !5 -"of each slot parallels the axis of the holder, the necessary clearance is provided to accommodate full housing of each dog [1 within its slot 14 in its normal positionof rest.

In service the holder 6 is engaged with a driving fit or connection over the blade Illa of a spindle Hl, lEla with its foot flange 7 seated on the top of the spindle whorl ID as seen in Figure 1. A core member, such as a tapered cop :8 or the like is then slipped down over the holder into a position wherein the base of the cop seats on the foot flange 1. As previously stated, the light frictional engagement between the cop and holder 6 is sufiicient to insure rotation of the cop 8 during the initial drive of the spindle in, ma.

With respect to the apparatus shown in Figure -1 it is sufficient to state that, except as concerns the holder and cone, the details form no part of the present invention. The apparatus illustrated forms a part of a well-known type of doubler twister thread winding machine embodying the vertically traversing ring rail 23. The single spinning ring 24 is shown as specially mounted on a threaded rod 26 in accordance with the invention fully described and claimed in my pending application Serial No. 104,724 filed October '8, 1936, now Patent No. 2,188,242. As will be understood, the whorl sleeve IU of the spindle is driven by suitable belt means, not shown.

In operation, as the rotative speed of the spindle and consequently the holder 6 increases, the action of centrifugal force will cause the clutch dogs I! to swing radially outward from their sockets so that the tooth 2| of each dog forcibly bites into or engages the usually roughened and relatively soft material of the inner face of the cop or cone 8, securely anchoring the cone against any possibility of slipping on the holder 6 and insuring a positive driving connection. With this-arrangement of holder it is possible to wind cones down to within one quarter inch of their bottom.

Figure 4 illustrates by dotted lines the projected position of one of the clutch dogs ll. If

for any reason any of the dogs should 'not be fully retracted when the holded is at rest, when a cone is applied over the holder its bottom edge will ride upon the inclined riser portion 22 of a projecting tooth and force the same radially inwardly to be housed within its slot, so that no obstruction will be presented to complete mounting of the cone on :the holder. It will be evident that when rotation of the spindle is stopped, the clutch dogs i] will release themselves by the action of gravity, swinging back into their housing slots into position as shown in full lines in Figure 4.

The modified form of clutch dog Ha shown in Figure 6 has the parts 2! a, 22a corresponding to parts 21, 22 of the dog 57 of Figure 5. However, dog Ha instead of having a hole receiving ring I6, has its rearwardly curved upper end Mia provided with a diagonal slot [9a whereby such dog can be readily hooked onto ring 16 without necessitating removal of the latter. When the member 6 is at rest dog Ha will hang in the full line position of dog I? of Figure 4; and when member 6 is rotated it will swing out to a position corresponding to the dotted line position of dog I! in Figure 4.

I claim: I

1. A cone mount for thread winding apparatus, comprising a truncated conical holder and adapted for driving engagement with a spindle, a cone engageable detent pivotally mounted in said holder for movement by centrifugal force, and stop means defining the extent of permissible movement of said detent in a cone engagement direction.

2. A cone mount for thread winding apparatus, comprising a truncated conical holder adapted for driving engagement with a spindle, an external annular foot flange on the holder providing a cone base seat, said holder having a circumferentially arranged series of parallel peripheral slots extending in the direction of the length thereof from the top to bottom and opening to the exterior of the holder, a pintle ring seated on the top face of the holder and overlying the upper end of each slot, a cone engaging detent pivotally suspended from said ring in each slot and biased toa position housed entirely within the slot, and said flange spanning across said slots adjacent the lower ends thereof to limit projection of the detents from their respective housing slots under influence of centrifugal force.

3. A cone mount for thread winding apparatus, comprising a truncated conical holder adapted for driving engagement with a spindle, an external annular foot flange on the bottom of said holder providing a cone base seat, the body of said holder being recessed inwardly behind said foot flange, said holder having a lineally extending peripheral slot opening to its exterior and extending from top to bottom inwardly of said foot flange, a cone engaging detent pivoted in said holder to swing radially outward through the slot under centrifugal force, and said foot flange providing a stop to limit the outward movement of said detent.

4. A cone mount or the like for thread winding apparatus, comprising a truncated conical holder adapted for driving engagement with a spindle and insertible in the base of a cone, said holder having a slot in its Wall opening inwardly from its outer surface, a cone-engageable detent, means pivotally mounting the detent in said holder slot in a manner to fully house said detent therein when the spindle is at rest, the depth of said slot being at least equal to the depth of said detent, and said detent being adapted to swing radially from said slot to operative position when the spindle and holder are rotated.

5. A cone mount or the like for thread winding apparatus, comprising a holder adapted for driving engagement with a spindle, a flange on said holder providing a cone base seat, said holder having a peripheral slot substantially parallel with the holder axis, said slot extending below said flange and spanned by the latter, a cone-engageable detent normally housed entirely within the slot and pivotally suspended from the upper end of the holder to move radially outwardly of the holder under the influence of centrifugal force, and said detent extending below the plane of the upper surface of said flange whereby the latter acts as a stop to limit outward movement of said detent.

6. A cone mount for thread winding apparatus, comprising a holder adapted for driving engagement with a spindle, an annular flange on said holder providing a cone base seat, said holder having a peripheral slot substantially parallel with the holder axis, said slot having its lower end spanned by said flange, a dog normally housed entirely within said holder slot and pivoted therein to project through said slot under centrifugal force, and a toothed portion on the outer edge of said dog for engaging the cone.

7. A cone mount for thread winding apparatus, comprising a, cone holder adapted for driving engagement with a spindle, said holder providing a cone-supporting means and having a surface recess in its upper end, said holder having a lineal peripheral slot therein, detent supporting means secured in said upper surface recess of said holder and extending across the upper end of the slot, and a cone-engageable \detent pivotally suspended from said detent supporting means to swing vertically in said slot for movement radially of the holder.

8. A cone mount for thread winding apparatus, comprising a holder having a conesupporting formation adapted for driving engagement with a spindle, a marginal flange extension at the upper end of said holder, said holder having a lineal peripheral slot extending from top to bottom and opening to its exterior, the inner wall of said slot being parallel to the holder axis, a cone engageable detent normally housed entirely within said slot, and a split ring on the top of said holder pivotally suspending said detent within said slot to swing under the influence of centrifugal force, said split ring being held in place by said flange extension,

JOHN C. HOUCK.

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