USRE23402E - Ring and traveler for twister - Google Patents

Description

Aug. 28, 1951 J. R. MULHOLLAND RING AND TRAVELER FOR TWISTER FRAMES Original Filed June 27. 1947 llllll INVENTOR- Jams R. Mulho llarwl BY WY-Zz? ATTORNEY UNITED STATES "PATENT OFFICE RING AND TRAVELER FOR TWISTER FRAMES James R. Mulholland, University Heights, Ohio Original No. 2,448,150, dated August 31, 1948, Se-

rial No. 757,418, June 27, 1947. Application for reissue'August 27, 1949, Serial No. 112,661

10 Claims. (Cl. 57-119) Matter enclosed in heavy brackets 1 appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue l 2 This invention relates to rings and travelers for top and bottom edges I5 and i6 and upon the twister frames, and has for its object to increase interior face thereof there is provided a circumthe production of such frames by reducing the ferential channel I! [that occupies] shown as breakage of the cord being twisted and enabling occupying the major portion of the width of the increase in traveler life. 5 interior face of the ring. The channel II has Twister frames have heretofore been provided sides I8, which as shown in Fig. 3 are undercut with hardened steel rings upon which travelers at a slight angle. The channel ll receives an of spring bronze are slidably mounted. Frequent annular insert I9 in the form of a transversely breakage of the cord being twisted is caused by split ring composed of a resilient bearing metal the abrasive action of worn travelers on the cords 10 such as a nickel Copper y. in Which t c el and by the dislodgment of worn travelers from content exceeds that of copper, or a spring bronze the ring. such as Phosphor bronze. The hardness of the my copending application, Serial No. I bearing ring is preferably about 165 to 185 Brinell. 686,563,1iled July 26, 1946, now abandoned, Ihave The annular insert I9 is formed from a strip of disclosed a ring and traveler inwhich the traveler sheet metal of a width to fit tig y Within the is formed of steel and runs upon a ring that'is channel I1 and the body II, and of a length provided with a bearing metal liner.] f corresponding to the circumference of the chan- The present invention is an improvement upon f 1 161. I the invention disclosed in [the aforesaid] jny' f -q'l henflat band forming the annulus I! is rolled prior application [in which] S. N. 686,563, now. 9 to a iameter slightly greater than that of the abandoned, but the steel traveler hereof bears ch nnel in which the ring is to be mounted, and upon an insert formed of a bearing metal that is the ring is pressed into the channel under P rigidly mounted in the interior face of a steel sure su'flicient to cause the edges of the strip to rin conform to the undercut sides III of the channel. with the b e a d th objects in ie th 5 The annular insert l9 has bias cut ends which invention may be said to comprise the ring and b t when he r s P ac in the channel l1 traveler and the bearing-metal-lined steel ring o that the insert l9 provides a continuous cy adapted for use with a steel travel as illustrated drical ar g surface. The thickness of the inin the accompanying drawings, hereinafter de- Sert I9 is preferably Slightly greater t a the scribed and particularly set forth in the append- 3 depth of the channel l'l so that the internal face ed clairns together with such variations and 0f the insert after it iS mounted in the channel modifications thereof as will be apparent to one is of a diameter slightly less than that of the skilled in the art to which the invention pertains. internal face f e y ll of e ring- Reference should be had to the accompanying A traveler 2| of hardened steel is mounted upon drawings forming a part of this specification, in the ring H and is provided with a wide cord which: receiving hook or curvature 22 at its upper end Figure 1 i a, fpp plan ie showing a ring which extends over the top edge I5 of the ring embodying the invention; II, and with a hook or curvature 23 at its lower Fig. 2 is a. transverse section taken on the line end which extends over the lower edge (6 of the indi ated t 2 2 in Fi 1 a d showing th ring. The traveler 2| has an intermediate beartraveler; ing portion or shank 24 that bears against the Fig. 3 is a fragmentary view showing a radial interior face of the insert 19 during operation of section through one side of the ring, the section the twister frame. during i h the traveler corresponding to that shown in Fig. 2 but on a Slides around the r larger ale; and The hardness of the spring metal bearing in- Fig. 4 is a perspective View of the bearing ring. sert is considerably less than the hardness of the Referring to the accompanying drawings, the steel body ll of h g, and the hardness of traveler ring ll of the present invention is a the steel traveler 2| is preferably slightly less hardened steel ring provided with a cylindrical than the hardnessof the steel body II and conexternal portion l2 and a short peripheral flange siderably greater than the hardness of the bear- I3 above the cylindrical portion 12. The cylining insert [9.

drical external portion I! of the ring it fits By reason of the tight fit of the insert IS in the within a circular opening in a twister rail I4 channel H, the insert is rigidly held against axial with the flange l3 bearing against the top surand circumferential movements during operation.

face of the rail. The steel ring it has rounded In various stages of twisting operations it is ste l traveler working on an all steel r ng at the critical speeds produces high frequency vibrations in both the'ring and traveler sufficient to open the traveler spasmodically and permit it to leave the ring. Regardless of what may cause the phenomenon the same does not occur in the use of a ring made according to the disclosure of this application. A tentative explanation is that the soft bearing metal of the ring in intimate contact with the steel as hereinbefore described damps such high frequency vibrations or in some such manner prevents occurrence of the phenomenon described above. I have further found that when the thickness of the soft bearing metal liner is considerably less than indicated by the drawing hereof the steeltravelers become detached from the r m! as pp ns in the case of an all steel traveler on an all steelring.

A hardened steel traveler has the advantage that it will operate for a long period of time before there is appreciable wear on the surface engaged by the cord which slides through the traveler during the operation of the machine. Because of its greater wear resistance the breakage of the cord due to the abrasive action of the traveler is much less frequent. Also the wear on the travelers due to frictional engagement with the ring is much less and the steel travelers have a much longer life.

It is to be understood that variations and modiflcations of the specific devices herein shown and described for purposes of illustration, may be made without departing from the spirit of the invention.

What I claim is:

l. A ring and traveler for twister frames comprising a hardened steel ring provided with rounded top and bottom edges and a continuous circumferential channel in its interior face, an annular insert formed of a resilient bearing metal softer than the steel of said ring and fitting in said channel, said insert having an internal substantially cylindrical surface and a steel traveler having end portions hooked over the top and bottom edges of said ring and an intermediate portion that slidably engages the cylindricalv internal face of said bearing metal insert.

2. A ring and traveler for twister frames comprising a hardened steel ring provided with rounded top and bottom edges and a continuous circumferential channel in its interior face, an annular insert formed of a resilient bearing metal softer than the steel of said ring and fitting in said channel, said insert having a radial thickness slightly greater than the radial depth of said channel and a substantially cylindrical internal bearing surface of a slightly less diameter than the interior face of said ring, and a steel traveler having end portions hooked over the top and bot- 6 4 having an internal substantially cylindrical surface of a diameter slightly less than that of the interior face of said ring, and a steel traveler of less hardness than said ring and greater hai'dness than said insert and having end portions that are hooked over the top and bottom edges of said ring and an intermediate portion that bears against the internal surface of said insert.

4. A traveler ring for twister frames comprising a hardened steel body having rounded top and bottom edges and a continuous circumferential channel in its interior face that occupies the major portion of the width of said interior face, and an insert in the form of a spring bronze bearlng ring fitting in said channel and having a substantially cylindrical interior face of slightly less diameter than the interior face of said body.

5. A traveler ring for twister frames comprising a hardened steel body having rounded top and bottom edges and a continuous circumferential channel in its interior face, said channel occupying the major portion of the axial width of said interior face and having the sides thereof undercut at 'a slight angle, and an insert in the form of a transversely split ring of spring bronze that fits closely in said channel, said bearing ring having abutting bias cut ends and a substantially cylindrical interior face of a diameter slightly less than that of the inner face of said body.

6. A ring of the class described adapted for use on a twister frame with a steel traveler, having upper and lower curvatures and connecting shank, said ring having a main body of hardened steel formed with rounded, smooth top-defining and bottom-defining surfaces over which the curvatures of the traveler respectively extend loosely to hold the traveler on the ring for free movement around it, said steel ring having its interior-defining face indented between the limits of the rounded surface portions, and a bearing metal annulus softer than the steel snugly occupying the indentation of the steel ring and with an inner. smooth surface portion so positioned as to slidably engage the shank portion of the traveler.

7. A ring and traveler for twister frames, the ring comprising a steel body having top-defining and bottom-defining rounded hard, wear resisting surface porti ns and an intermediate interiorly exposed relatively soft, smooth inlaid bearing material surface portion, the traveler being a single piece of steel having upper and lower curvature portions of suitable form to loosely secure the traveler against detachment from said top and bottom ring portions and a shank portion connecting the curvature porti ns and p0- sitioned to slidably engage the inlaid bearing material of the ring as the traveler moves around the ring during a twisting operation, all surface portions of the traveler being somewhat softer than those of the rounded ring surface portions engaged thereby and materially harder than said irzllaid bearing-material surface portion of the r g.

8. A textile twister ring for use with a steel traveler having upper and lower curvatures and a connecting shank, said-ring comprising an annular steel body having rounded upper and lower smooth, hardened rim portions for loose embracement by the curvatures of the traveler and an intermediate inner surface portion for contact with the traveler shank, said inner surface portion comprising a complete annulus of bearing material of substantial thickness and materially softer than the ring-contacting portions of the body and intimately embraced by said body 5 on the outer face and at least one edge of the annulus for location thereof axially of the ring permanently in p sition parallel to the rim portions of the ring.

9. A textile twister ring for use with a steel traveler having upper and lower curvatures and a connecting shank. said ring comprising hardened annular steel rim portions arranged for loose embracement by the curvatures of the traveler and intermediate inner surface portion for contact with the traveler shank. of bearing material substantially softer than the rim portions.

10. A ring and traveler for twister frames, the ring having top defining and bottom defining rounded annular steel hardened portions and an intermediate interiorly exposed bearing material surface portion substantially softer than said steel porti ns, the traveler being an elongated piece of steel having upper and lower curvature portions of suitable form loosely to embrace said top and bottom defining portions and secure the traveler against deviation therefrom and the shank of the traveler being inwardly extended to engage the bearing material surface, the portions of the traveler which engage the steep portions of the ring being somewhat softer than said steel portions and the p01'ti0n of the traveler which contacts the bearing material being substantially bearing material.

harder than such JAMES R. MIR-HOLLAND.

REFERENCES CITED The following references are of record in the file of this patent or the original patent:

UNITED STATES PATENTS Number Name 7 Date 2,194,930 Feen Mar. 26, 1940 FOREIGN PATENTS Number f Country Date I 3,51% Great Britain of 1901 422,093 Germany Mar. 30, 1926 115,910

Switzerland Ju1y16, 1926

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