US2206591A - Twister traveler - Google Patents

Description

July 2, 1940. P. c. WENTWORTH 2,206,591

. '1 ISTER TRAVELER I Filed Aug. 19. 1939 l atented July 2, i940 PATENT OFFICE TWIS'EJER TRAVELER I Philip C. Wentworth, Providence, R. I.

Application August 19, 1939, Serial N0. 291,070

6 Claims.

This invention relates to twister travelers.

In recent years, the introduction of the automatically lubricated twister ring has made higher spindle speeds possible, and there has also been an increasing use of such fibres as rayon, celanese, silk, worsted, wool and mohair, and miretures thereof.

The twisting of these newer yarns at the increased spindle speeds now prevailing imposes new responsibilities on the traveler which it is not capable of meeting as now designed.

In order to adapt the traveler to meet these new responsibilities, and especially in order to overcome the tendency of the traveler to become unthreaded when the twister frame is doffed, which tendency is particularlywnoticeable when the old style traveler is run with the newer yarns at the increased spindle speeds, I have redesigned the traveler.

In general, my new traveler design is a combination of the conventional regular circle spin ning traveler as to its bow and inturned horns and of the conventional twister traveler as to its back and foot.

The resultant traveler is one of new design and effect in that (1) the generally circular bow and inturned horns constituting the head of my traveler effectively retain the yarn at all the variant angles at which the traveler may run on the ring; (2) the curved bow also greatly reduces chafing of the yarn because theyarn has a wider latitude of movement; and (3) the outer horn of the bow terminates substantially in the vertical plane of the outer face of the traveler foot and when the traveler is running is normally spaced slightly away from the adjacent face of the'twister ringso that when the twister frame is doifed, the yarn drops down on the horn of the traveler and is prevented from unthreading.

Referring to the accompanying drawing wherein I have illustrated my new design of twister traveler,

Fig. l is a fragmentary perspective of a conventional twister rail and ring (in section) showing my new traveler in running position thereon.

Fig. 2 shows the position of the traveler in reference to the ring when the bobbin is .doffed.

Fig. 3 is a view similar to Fig. 1 but showing a modified form of twister ring.

Fig. 4 is a view similar to Fig. 2 of the ring and traveler shown in Fig. 3.

Fig. 5 is a diagrammatic study of the traveler indicating by the broken line A-A that the inner surface of the outer horn and the outer face of the traveler foot are disposed in substantially the same vertical plane.

6 is a diagram showing a conventional twister traveler (in full lines) superposed upon a conventional regular circle spinning trav- '5 eler (in dotted lines) to visualize the genesis of my new traveler, and

Fig. '7 is an edge View showing a slightly modified form of my new traveler.

In Figs. 1 to 4, inclusive, the ring rail is indi- 0 cated at It. In Figs. 1 and 2, a twister ring ll of conventional form is shown. In Figs. 3 and 4,

a modified form of twister ring i2 is shown, such ring differing from the ring of Figs. 1 and 2 only in that the upper portion thereof is flattened as 15 at it and provided with oppositely rounded inner and outer edges is and l 5 respectively.

My new traveler, indicated generally at T, consists of a head it, foot H, and back l8 connecting the head and foot.

As diagrammatically illustrated in Fig. 6, my traveler is a combination of the conventional twister traveler T and the conventional regular circle spinning traveler S, its back and foot being substantially those of the conventional twist- 25 er traveler and its head being substantially that of the conventional spinning traveler.

In such combination, the inner horn IQ of the conventional regular circle spinning traveler becomes the point of juncture of the head and back 30 of my new traveler, the outer horn 20 thereof becomes the outer flange or horn of my new traveler, and the connecting bow 2! thereof becomes the head proper of my new traveler.

In Figs. 1 and 3, which show my new traveler 35 in running position on the ring, the generally circular bow H, in combination with the outer flange or horn 20 effectively retains the yarn Y at all the variant angles which the traveler may assume when running on the ring as well as min- 40 irnizing chafing of the yarn.

When the twister frame is doiled, the yarn Y drops down on the horn 2|] of the traveler (see Figs. 2, 4, and 5) and is prevented from unthreading.

By reference to Fig. 5 it will be noted that the 45 inner surface of the horn 20 and the outer face of the traveler foot ll are disposed in substantially the same vertical plane (see broken line A-A) 50 In the modification of Fig. '7, the outer horn 20' is turned substantially horizontally inwardly towards the outer face of the ring instead of curving downwardly and inwardly theretowards, as in Figs. 1 to 5.

In both forms, the outer horn an or 20' furnishes with the adjacent portion of the bow 2i and the adjacent face of the ring a pocket 22 within which the yarn is retained against unthreading when the bobbin is doiied and the yarn drops (see Figs. 2, l, and 5).

What I therefore claim and desire to secure 7 by Letters Patent is:

1. A twister traveler for use on a vertical ring, consisting of a member having a head, a foot, and a back connecting said head and foot, said head comprising inner and outer bent portions adapted to be disposed on either side of the ring and an intermediate connecting portion adapted to overlie the upper edge of the ring, said outer portion extending downwardly and then inwardly at an angle with said downwardly extending portion not exceeding 90 to form a yarn-catching and supporting horn or shelf which when the traveler is in normal running position on the ring is spaced slightly away from the outer surface of the upper edge of the ring but temporarily contacts the ring when the traveler drops in doffing to thereby define with said downwardly and inwardly extending portion and with the adjacent surface of the ring a pocket within which the yarn is positively retained against unthreadmg.

2. The traveler of claim 1, the inwardly extending portion of said horn or shelf being disposed at an angle of approximately 90 with said downwardly extending portion.

3. The traveler of claim '1, the intermediate connecting portion of the traveler head being substantially semi-circular.

4. The traveler of claim 1,the inner and outer portions of the traveler head being substantially oppositely curved.

5. The traveler of claim 1, the inner surface of said horn and the outer surface of said'foot being disposed in substantially the sameyertical plane.

6. The traveler of claim 1, the ring having oppositely curved inner and outer flanges, and the inner and outer portions of the traveler head being curved to substantially correspond tothe curvature of said ring flanges.

PHILIP C. WENTWORTH.

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