US3352096A - Linear contact horizontal spinning ring - Google Patents

Description

Nov. 14, 1967 R N 3,352,096

LINEAR CONTACT HORIZONTAL. SPINNING RING Filed Nov. 22, 1966 Yarn '-B, Q I 34 A, 40 A 28 32 44 0 FIG. 2

INVENTOR.

PETER F. GRISHIN United States Patent C) 3,352,096 LINEAR CONTACT HORIZONTAL SPINNING RING Peter F. Grishin, Sanford, N.C., assignor to Roberts Company, Sanford, N.C., a corporation of North Carolina Filed Nov. 22, 1966, Ser. No. 596,187 10 Claims. (Cl. 57-119) ABSTRACT OF THE DISCLOSURE This invention relates to horizontal rings as are used in spinning textile fibers into yarn and represents an improvement over my earlier issued patents, Nos. 2,857,732, 2,889,679 and 3,011,301. In the use of such rings, the strand of textile fibers is presented to the bobbin through a wire link or traveler which is loosely mounted on the top flange of a spinning ring. The traveler is rapidly rotated about the ring at high speed, and the resulting yarn strand formed by the individual strands of fibers is wound on a spool or bobbin mounted on a spindle. The present invention relates particularly to linearly contacting horizontal ring and travelers cooperating during the spinning operation to reduce excessive heating, the ring and traveler being contiguous along a portion of the inside ring Ill'Il.

Background, summary and objects of the invention A number of existing flanged ring and traveler combinations is designed on curved lines, and because the radius of traveler, at the point of contact, is larger than that of the corresponding radius curvature of the ring, contact between the two is experienced at a single point if the traveler used is of circular cross-section. Thus, the pressure of the traveler against the ring per square unit of contact area becomes excessive, leads to serious traveler burn and thus prevents running higher speeds in spinning.

Another embodiment of traveler and ring construction encompasses a flat traveler of substantially rectangular cross-section which has .line contact with the ring, i.e., the points of contact form a line extending transversely across the traveler rather than the single point contact experienced when using a traveler of circular cross-section as described above.

In recent practice both the spindle speed and the outside diameter of full bobbins have been substantially increased, and the rate of traveler speed relative to the ring has been correspondingly increased. Therefore, more rapid traveler wear and increased traveler breakage have resulted. When traveler and ring surfaces engage each other with substantially point or line contact at higher relative speeds, the pressure of the traveler against this small contact point or line becomes excessive and oftentimes intolerable. The friction between the traveler and the ring flange at this contact location develops intense heat which isdlstributed to both sides of the traveler about the contact surface.

The present invention avoids this deficiency by permitting the top ring flange and traveler to cooperate in such a way that the contact surface between the ring and a traveler of, for example, circular cross-section is extended from a single point to an infinite number of points by imparting to both the ring and traveler a substantially straight line design at the area of contact. Thus in this straight line concept, the surface contact between ring-and traveler is increased by one dimension, i.e., with the flat traveler which normally has a straight line contact with the ring, an area and not just a straight line contact surface is established, while with a circular crosssection traveler which normally has a single point of contact with the ring, a line and not just a single point contact surface is established.

ice

With the foregoing in mind, it is, therefore, a general object of this invention to provide a particularly shaped bearing surface along the traveler-engaging flange of a horizontal spinning ring which will coact with the associated surface of a traveler to present a substantially greater traveler-flange contact surface with corresponding reduction in unit pressure and traveler heating.

To the attainment of this object, a relatively large bearing surface is provided on the inner surface of a ring flange, and this surface substantially conforms to the shape of the associated traveler surface to provide a maximum contact surface for heat dissipation and pressure distribution. This surface is more strictly confined within limitations than heretofore experienced in ring and traveler assemblies because of the particular design configuration of the traveler and traveler-engaging ring inner surface, the area location heretofore being rather loosely defined due to variations in yarn pull and other factors. Increased yarn clearance in the traveler may also be provided by beveling the upper inner portion of the travelerengaging inner surface of the ring.

It is an additional object of this invention to provide a substantially trapezoidally and/or otherwise irregularly shaped traveler constructed from a circular or flat solid wire segment having a parted portion for receiving the flange of a spinning ring therein and having a design conforming to the traveler-engaging inner surface of a ring flange resulting in a substantially greater traveler surface contact with the corresponding reduction in pressure and traveler heating.

With the foregoing objects and others which will appear in the following full description in mind, the invention consists in the combinations and arrangement of parts and details of construction which will now first be fully described in connection with the accompanying drawings, wherein like characters of reference designate corresponding parts throughout the several views, and then more particularly pointed out in the appended claims.

Figure description FIG. 1 is a sectional side elevational view of the spinning ring mounted in a holder which is secured in the upper face of a ring rail illustrating the positioning of a spindle mounted bobbin with a strand of yarn directed to the bobbin through the traveler.

FIG. 2 is a theoretical design of a ring-traveler combination particularly adapted to disclose the basic operating principles of the present invention.

FIG. 3 is an enlarged cross-sectional view of a preferred design of a ring-traveler combination showing the upper flange of an improved spinning ring together with an associated substantially trapezoid-ally shaped traveler mounted for slidable rotation around the ring flange.

Referring now to FIG. 1, a spinning ring generally designated 10 is mounted in a holder 12 which in turn is secured within the upper face 14 of a ring rail 16. A bobbin 18 is mounted on a spindle 20, and a strand of yarn 22 is directed to the bobbin through a traveler generally designated 24. This particular arrangement of components and parts is conventional, and the present invention relates particularly to the novel and substantially trapezoidally shaped traveler 24- and associated ring flange 26 about which the traveler rotates.

Detailed description The theoretical design drawing of FIG. 2 best illustrates the basic and novel features of the present invention including particularly the longitudinal line or area of surface contact AB between ring and traveler depending on the cross-sectional configuration of the traveler generally designated 28. The interior wall 30 of the ring generally designated 32 cooperates with the associated traveler 28 along a straight vertical portion 34 corresponding to and contiguous with wall 30 of ring 32. The shape of the top 36 of flange 38 is not critical and could be flat as represented by line CB or curved as shown in broken line COB. Another variation will be illustrated in the preferred embodiment of the present invention concept.

A lower inwardly extending portion 42 of traveler 28 need only make contact at point A for successful operation, though it is entirely possible that as the traveler 28 til-ts during rotation about ring 32, lower portion 42 along its inner edge represented by line DA could have line or area surface contact with the corresponding underneath portion represented by line EA of flange 38.

The inner flange surface 30 also represented by the line AB may contain one or more slots (shown in a broken line and designated 40), the purpose of which is to provide the traveler with a greater opportunity to be cooled by an air stream opposing its movement as it rotates about the flange 38. Thus when a slotted indentation is used, the line or area surface contact between the ring flange 38 and traveler 28 would be defined along line BB and AA The produced dual lines or areas of surface contact would be more desirable than having a single point or line of contact as is the case in conventionally available rings.

In practical modifications likely to be made in the theoretical illustration set forth in FIG. 2, it is obvious that the bottom portions 44 and 46 of flange 38 may also be made by slanted straight lines and these lines may be situated at different levels with respect to each other, such a modification encompassed in the primary embodiment to be described subsequently.

Although the cross-section of flange 38 at inner surface 30 along line AB is substantially a straight line in the theoretical and preferred configuration, it may be preformed also as a large concave or convex curved radius to cooperate with a matching curved portion of the traveler. Additionally, the straight line AB may also be slanted down inwardly or outwardly according to convenience and need for particular spinning conditions.

The sharp corners at points A and B may be cut off and replaced by slanted straight lines, or curves of any reasonable radii. In the latter case, however, care should be taken in retaining between points A and B a sufficient straight line section to diminish heat and pressure at high efliciency, and it is suggested that at least one-third of line AB be left when the corners are cut on circular lines. The upper corner designated B may be cut on a concave curve to give more freedom for yarn during a heavy traveler tilt.

As a preferred or suggested embodiment, FIG. 3 encompasses a number of the possible variations from theoretical FIG. 2 which have been previously discussed. For example, the outer part 48 of the flange 50 presents a substantially semi-circular contour of radius r which is common in such spinning rings, however, the inner traveler engaging surface 52 of the flange 50 is of special design and formation, for this inner surface includes a substantially straight inner or inside rim edge 54 and a substantially straight lower edge 56, these two edges intersecting and forming an angle of approximately 105 degrees (see FIG. 3). The ridge created by the intersection of inner and lower edges 54 and 56 is then slightly beveled thus creating a small radial cross-section of radius r to facilitate a beveled edge line or area surfuace contact with the contour 58 of an associated traveler 60. Thus the overall effect of the intersection of the inner or inside rim edge 54 and the lower portion 56 of the travelerengaging inner surface 52 is to create a substantially angular cross-sectional design or contour to facilitate substantial line or area surface contact between the travelerengaging surface 52 and the bend 58 of an associated traveler 60.

The upper inner portion 62 of flange 50 has a beveled contour of relatively small radius r and this radius may desirably be about one-half the length of the radius r previously discussed. Note that the radius r governs the beveled circular edge created at the intersection of inside rim edge 54 of traveler-engaging inner surface 52 with the inwardly beveled portion 64 of the top surface generally designated 66 of flange 50.

The upper or top surface 66 of flange 50 is peaked or roof-shaped to form a ridge 68 of approximately 150' created by the intersection of an outwardly beveled portion 70 with inwardly beveled portion 64. Ridge 68 lies within the plane of a normal vertical web 72 to impart structural strength to the flange 59 in the portion coincident with the web and also to prevent the traveler from excessive tilting during movement which would otherwise trap the yarn against the ring top.

The traveler 60 is preferably constructed of a unitary section of solid circular or flat wire or stock metal particularly shaped to resemble a trapezoid or other irregular figure having an upper edge 74 which is substantially parallel with lower edge 76 having an access opening 78 therein and two non-parallel sides 80 and 82. The ring flange-engaging portion 83 of the traveler is particularly designed to accommodate even the traveler-engaging inner edge or surface 52 of flange 50 during high speed rotation of the traveler about that flange and is in substantial line or area surface contact with the coacting faces 54 and 56 of inner surface 52 for a relatively .long distance, so that the unit pressure of the traveler against the ring flange is greatly reduced, even with the use of relatively heavy yarn. The increased line or area surface contact also permits much more rapid heat transfer from the traveler to the ring flange, and accordingly, the overheating and burning of the travelers is substantially reduced, with corresponding saving in lost time for replacement, as well as a savings in traveler expense.

The provision of substantial yarn clearance at the upper inner portion 62 of ring flange 50 prevents crowding and pinching of the yarn at that locus and effects a major reduction in yarn breakage.

Thus there has been described a novel and efficient ring flange having a traveler bearing surface which will present a relatively large traveler surface contact line or area and which will also provide increased clearance space for large counts of yarn. There has also been described a theoretical and preferred embodiment of a cooperating associated traveler of a unique configuration that will efliciently engage the flange inner surface and rotate on the flange about the ring with greater efliciency than heretofore known.

Obviously, many modifications and variations may be made in the construction and arrangements of the travelerengaging inner surface, the beveled portions of the top surface and the associated traveler as Well as other phases of the present inventive concept in light of the above teachings without departing from the real spirit and purpose of this invention. Such modifications of parts and alternatives as well as the use of mechanical equivalents to those herein illustrated and described are reasonably included and contemplated.

I claim:

1. A horizontal spinning ring comprising: a vertical web with a top flange inwardly and outwardly overhanging said web, the inner overhanging portion of said flange having a traveler-engaging inner surface including a substantially rectilinear inside rim edge, said edge conforming to the shape of an associated rectilinearly contiguous traveler moving about said flange.

2. A spinning ring according to claim 1, said travelerengaging inner surface also including a substantially rectilinear lower edge intersecting said side rim edge which conforms to the shape of the associated rectilinearly contiguous traveler moving about said flange.

3. A spinning ring according to claim I, said inner surface having at least one slotted portion therein adapted to cool the contact surface of the associated traveler by permitting air circulation through said portion as the traveler moves about said flange.

4. A spinning ring according to claim 1, said top flange having an upper inner portion adjacent said inside rim edge which is inwardly and downwardly tapered to provide substantial traveler clearance space.

5. A spinning ring according to claim 2, said inside rim and lower edges intersecting at an angle of approximately 105 degrees and said edges being beveled at their intersection to facilitate rectilinear contact thereat with the associated traveler.

6. A spinning ring as claimed in claim 1, said top flange having a top surface comprising a substantially straight inwardly beveled portion and an outwardly beveled portion, said beveled portions intersecting and forming a ridge for said flange top surface.

7. A spinning ring as claimed in claim 5, said top flange having an upper inner portion which is inwardly and downwardly tapered to provide substantial traveler clearance space and having a top surface comprising a substantially straight inwardly beveled portion and an outwardly beveled portion, said beveled portions intersecting and forming a ridge of approximately 150 degrees for said flange top surface, said ridge lying within the plane of said vertical web to impart structural strength to said top flange in the portion thereof lying coincident with said web.

8. A spinning ring as claimed in claim 3, said travelerengaging inner surface also including a substantially rectilinear lower edge which conforms to the shape of the associated rectilinearly contiguous traveler, said top flange having an upper inner portion which is inwardly and downwardly tapered to provide substantial traveler clearance space, said inside rim and lower edges intersecting at an angle of approximately 105 degrees and said edges being beveled at their intersection to facilitate rectilinear contact thereat with the associated traveler, said top flange having a top surface comprising a substantially straight inwardly beveled portion and an outwardly beveled portion, said beveled portions intersecting and forming a ridge for said flange top surface, said ridge lying within the plane of said vertical web to impart structural strength to said top flange in the portion thereof lying coincident with said web.

9. A traveler adapted to cooperate with a spinning ring comprising: an upper edge and a lower edge substantially parallel thereto, said lower edge having an access opening therein to receive a ring top flange when the traveler is positioned on the ring; a first side connecting said upper and lower edges; and a second ring-engaging side joining said upper and lower edges, said second side shaped to engage rectilinearly the ring flange inner surface when the traveler is urged thereagainst by centrifugal force While rotating about the ring.

10. A traveler as claimed in claim 9, said first and second sides being non-parallel, and said edges and sides formed from a unitary section of material and particularly shaped to resemble a trapezoid.

References Cited UNITED STATES PATENTS 2,413,930 1/1947 Smith 57119 3,011,301 12/1961 Grishin et a1. 571 19 3,084,501 4/1963 Kluttz 57-119 FOREIGN PATENTS 1,277,918 10/1961 France.

FRANK J. COHEN, Primary Examiner.

35 W. H. SCHROEDER, Assistant Examiner.

Claims (1)

1. A HORIZONTAL SPINNING RING COMPRISING: A VERTICAL WEB WITH A TOP FLANGE INWARDLY AND OUTWARDLY OVEHANGING SAID WEB, THE INNER OVERHANGING PORTION OF SAID FLANGE HAVING A TRAVELER-ENGAING INNER SURFACE INCLUDING A SUBSTANTIALLY RECTILINEAR INSIDE RIM EDGE, SAID EDGE CONFORM-

Images