US1923667A

US1923667A - Twisting device

Info

Publication number: US1923667A
Authority: US
Publication date: 1933-08-22
Anticipated expiration: 1950-08-22

Description

Aug. 22, 1933- G. H. GILLIGAN TWISTING DEVICE Filed Feb. 2, 1933 arzff] Patented Aug. 22, 1933 UNITED STATES PTIEINT OFFICE 10 ClaimsI (Cl. 118-59) My' invention relates to rings and travelers for twisting frames, and more particularly to vertical travelers.

In the twisting operation, the thread occasionally completely escapes from the traveler, and

unless this is discovered and the thread manually replaced, winding upon the spindle necessarily ceases.

The escape of the thread usually occurs when the traveler is at rest upon its ring, or when the spindle is inactive during a continuous traverse movement of the ring rail, a condition prevalent in certain types of silk twisting frames where excessive twist occurs, such as in crepe and like twists.

The escape under these conditions is due to the fact that the yarn passing through the traveler between the delivery rolls and spindle is under high torsion, the twist therein often exceeding 20 ninety turns to the inch and even inducing kinks in the thread. Therefore when lengthwise tension upon the thread is relaxed, as is the case when the traveler is at rest, the thread, by its stored up torsional energy, moves or crawls over downwardly through the space which is present between the outer face of the ring and the horn tip of the common form of traveler.

An object of my invention is to prevent the accidental escape of the thread from the traveler due to the above or other causes.

Other and ancillary objects of the invention will hereinafter appear.

My invention consists, therefore, in the means for producing the results above referred to substantially as hereinafter claimed.

In the accompanying drawing,

Figure 1 is a fragmentary sectional view oi a portion of a common twisting machine in which my invention is incorporated,

Figure 2, a fragmentary transverse section of a ring showing my traveler in running position thereon, and

Figure S, a similar section of the ring showing my traveler in inactive position thereon.

Similar reference characters indicate similar parts throughout the views.

Referring in detail to Figure 1, 4 indicates the delivery rolls of a twisting machine, feeding the yarn 5 through guide 6 to the spool 7 upon the revolving spindle 8. 9 is the traverse rail carrying rail ring 10 of the vertical type supporting a ring traveler 11 also of vertical type. The rail 9 moves up and down to guide the yarn upon the the top of the ring from its original position in. the rear portion of the upper horn, and escapesspool while the traveler is impelled by the yarn in a circular course upon the ring.

The traveler 11 comprises in this instance a shank 12, a foot or lower hornlB, a head or upper horn 14. The traveler is preferably of steel, le() bronze, or ferrous alloys, and may be of Vany preferred cross sectional contour.

The shank has a relatively short portion 16 continuous with the foot 13 inclined upwardly and forwardly and a longer rearwardly and upwardly inclined portion 17, forming with the portion 16 bend 18 near the bottom of the shank engageable with the inner face of the ring and constituting a pivot or fulcrum. The shank portion 1'7 is continuous with the forwardly directed l70 top portion 19 of the head 14 terminating in the downwardly directed tip portion 20 of the latter. The rounded angle formed by the junction of the shank portion 17 andv top portion 19 of the head defines the loop 21 through which the yarn 5 normally passes. The backl of `the tip portion 20, adjacent its free end, is provided with a forwardly and downwardly inclined transversely disposed recess 22 extending the width of the tip.

In running position the traveler is laterally tilted, as evident in Figure l, and orwardlytilted, as shown in Figure 2, wherein its Ytipportion 20 is spaced from the outer face of the ring. In this position the shank portion 16 is upwardly and forwardly inclined. The thread 9 passes as usual through the loop 21 of the traveler.

When, however, the traveler for any reason discontinues its advance, the lengthwise tension of the yarn is relaxed, and the traveler drops. During this drop the traveler tilts rearwardly upon its pivot 18, in the direction of the arrow in Figure 3, and assumes the position shown in said iigure. Namely the top 19 of the traveler head rests upon the top of the ring 10, and the 95 tip portion 20 engages the outer face of the ring at its upper margin, as at 23.

The rearward tilt of the upper portion of the traveler was occasioned by the greater weight of the upper portion of the traveler and by the location of the bend or pivot 18 in the lower portion oi the traveler rather than at or above the center of the shank.

In its inactive position the tip portion 20 of the traveler forms an abutment which impedes11l05 the escape of the yarn when, under the influence of torsional power, it endeavors to force its way over the top of the ring. If, however, the torsion induces the yarn, in its travel along the inner contour of the traveler head, over the ringV :113.

top and between the traveler tip and outer face of the ring, the yarn moves down into the recess 22. I-Iere the yarn remains seated until the traveler resumes its operation, whereupon the yarn assumes its original position released from the slot.

It will be understood that any changes of detail of construction, within the scope of the 1anguage of the claims, is permissible without departing from the spirit of the invention.

I claim:-

1. A traveler for spinning and twisting rings having a lower shank portion and an upwardly and rearwardly inclined upper shank portion, a foot upon the end of the lower shank portion, and a head upon the upper shank portion, said head provided with a transverse recess extending into the head from the inner face thereof.

2. A traveler for spinning and twisting rings, having a lower shank portion and an upwardly and rearwardly inclined upper shank portion, a foot upon the end of the lower shank portion, and a head upon the upper shank portion, said head provided with an inclined transverse recess extending into the head from the inner face thereof.

3. A traveler for spinning and twisting rings having a lower shank portion and an upwardly and rearwardly inclined upper shank portion, a foot upon the end of the lower shank portion, and a head upon the upper shank portion having a tip provided with a transverse recess extending into the tip from the inner face thereof.

4. A traveler for spinning and twisting rings having a lower shank portion and an upwardly and rearwardly inclined upper shank portion, a foot upon the end of the lower shank portion, and a head upon the upper shank portion having a tip provided with an inclined transverse recess extending into the tip from the inner face thereof.

5. A traveler for spinning and twisting rings having a shank, a foot at one end thereof and a head at the other end provided with a transverse recess extending into the head from its inner face reducing the thickness of the head at that point.

6. A traveler for spinning and twisting rings having a shank, a foot at one end thereof` and a head at the other end having a tip provided with a transverse recess extending into the tip from the inner face of the tip reducing the thickness thereof at that point.

'7. A traveler for spinning and twisting rings having a shank, a foot at one end thereof and a head at the other end having a tip provided with an inclined transverse recess extending into the tip from the inner face of the tip reducing the thickness thereof at that point.

8. In combination, a vertical ring having an inner face and an outer face, and a traveler including a shank comprising converging inclinedportions fulcrurned upon the inner face of the ring, a foot upon one of the inclined portions engageable with the ring, and head upon the upper inclined portion engageable with the outer face of the ring, said head provided with a transverse recess extending into the head from the inner face thereof.

9. In combination, a vertical ring having an inner face and an outer face, and a transversely tiltable traveler including an angular shank fulcrurned intermediate its length upon the inner face of the ring, a foot upon the lower end of the shank, and a head upon the upper end of the shank spaced from the outer face of the ring when the'traveler is tilted in one direction, and adapted to abut against said outer face when the traveler is tilted in the opposite direction, said head provided with a transverse recess extending into the head from the inner face thereof.

10. In combination, a vertical ring having anY from the inner face thereof, and a foot upon the lower end of the shank engageable with the ring when the traveler tilts in the other direction.

GEORGE H. GILLIGAN.