US3035398A - Flier construction - Google Patents

Description

May 22, 1962 R. HARGREAVES ETAL 3,

FLIER CONSTRUCTION Filed Aug. 7. 1959 2 Sheets-Sheet 1 ll l ' INVENTORS ROBERT HARGREAVES HAROLD M. MILLER ATTORNEY May 22, 1962 R. HARGREAVES ETAL 3, 35,

FLIER CONSTRUCTION Filed Aug. 7. 1959 2 Sheets-Sheet 2 I g q- INVENTORS ROBERT HARGREAVES HAROLD M. MILLER ATTORNEY 3,035,393 FLIER CON TRUCTION Robert Hargreaves, Whitinsville, and Harold M. Mlller,

Northbridge, Mass, assignors to Whitin Machine Works, Whitinsville, Mass, a corporation of Massachusetts Filed Aug. 7, 1959, Ser. No. 832,239 10 Claims. (Cl. 57-62) This invention relates to improvements in the flier construction used in a machine of the up-twister type. In this respect, attention is directed to Schlums Patent No. 2,843,998 showing a typical up-twister construction.

When yarns which consists of certain long staples of synthetic fibers are twisted in the machine described in the above-identified patent, it is found that the ends of these fibers are thrown outwardly from the package or spool supply by centrifugal force and the loose fiber ends become twisted with the yarn itself, causing the yarn to break. These yarn breakages occur more often due to the loose fiber ends when two or more yarns or strands in the supply package are twisted together to form a plied yarn.

It is the general object of the present invention to obviate this difliculty by providing a construction in the novel flier wherein the twist is prevented from reaching backwardly into that portion of the yarn which is adjacent the supply package and by preventing the twist in this portion of the yarn, the loose ends do not become twisted into the yarn and therefore these loose ends cannot cause the yarn to break.

Another object of the invention resides in the provision of new and improved twister flier wires or flier legs formed with loops or eyes arranged in a new and improved manner for carrying out the purposes above described.

Other objects of the invention reside in the provision of an anti-friction mounting for the flier for the reduction of undue tension on the yarn being twisted; the provision of a new and improved flier controlling the zone or area in which the yarn is twisted to maintain a more uniform twist; the provision of a novel flier construction enabling worn or damaged wires or legs to be quickly removed and replaced and to replace one type of flier wire or leg with another type when the direction of twist is to be changed; and the provision of a self-centering yiel-dable driving connection between the flier mounting and the spindle which is easily detached.

The invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly set forth in the appended claims.

Reference is to be had to the accompanying drawings, in which FIG. 1 is a view in elevation illustrating the invention applied to an up-twister machine, parts being in section;

FIG. 2 is a plan view on an enlarged scale illustrating the improved flier;

FIG. 3 is -a view in elevation, looking in the direction of arrow 3 in FIG. 2, parts being in section to illustrate the construction;

FIG. 4 is a view on a still further enlarged scale and is a section on line 4-4 of FIG. 3; and

FIG. 5 is a view similar to FIG. 4 but showing a modification thereof.

Referring now to FIG. 1, the disclosed embodiment of the invention comprises the up-twister machine which includes a frame of generally conventional construction and having a rail 12 on which is mounted a plurality of spindles l4 rotated by belts to from a power source not shown. Frame 10 also supports a rail 18 on which a plurality of brackets 20 may be mounted. These brackets 20 provide spaced bearings for a continuously rotated shaft 22. Secured to shaft 22 and between each pair of atent brackets 20 is a winding drum 24, and take-up spools 26 rest upon the drums 24 and are rotated thereby. These take-up spools have end gudgeons 28 which are slidable in guide grooves 30 in the brackets 20.

The brackets 20 slidably support a transverse bar 32 by means of extensions 34, and secured to this bar 32 there is a guide 36. Bar 32 may be reciprocated by any conventional mechanism in timed relation to the speed of the winding drums as is well known in the art, and the usual balloon-restricting cylinder indicated at 38 may be utilized in the usual manner and may be mounted upon a bracket 40 in turn mounted on rail 18. The description as so far recited is of usual or conventional type in an uptwister and may include the usual yarn guide 42 swingably mounted on the bracket 40 by means of the mounting 44 on pivot 46.

The upper end of the spindle 14 is provided with a reduced tip indicated by the reference character 48, see FIG. 3. The new and improved flier construction is provided with a sleeve-like hub 50 having a central cylindrical hollow portion and an enlarged opening at 52 for a purpose to be described. This hub 50 receives a generally cylindrical bushing 54 which is conveniently made of nylon or the like and is provided with a top end flange or collar 56 held in position against the bottom 58 of the enlargement 52 by means of a snap-ring 60. The bushing may be made elastic by slitting it lengthwise as shown at 62.

Surrounding the bushing 54 and located in appropriate internal annular recesses in the hub 50, there are provided a set of O-rings 64. The hub '50 is provided with an enlarged base 66 and when the flier is assembled on the tip of the spindle, this base rests directly on the top of the spool which is indicated at 68. The O- ings keep the bushing and hub tight on the spindle tip and due to the relative elastic mounting of the bushing, the flier can be easily and quickly removed bodily from the spindle when an empty spool has to be changed to a fresh supply. The flier of course is as easily returned to the spindle with the base of the hub always positioned flatly against the top of the spool.

The base 66 of the hub provides a support for the inner race 70 of a ball-bearing for the flier arms to be described, and this inner race is held in position by a snapring 72 as clearly shown in FIG. 3.

There are provided a pair of clamping plates or members which are arranged in superposed condition and these plates are similar in size and shape and are indicated as at '74 and 76, 74 being the upper plate and 76 the lower plate. These plates may be of any shape desired but are preferably elongated as is shown in FIG. 2 and centrally thereof are provided with annular offset portions indicated respectively at '78 and 36 for the purpose of holding the outer race 82 of the ball-bearing in position, and in turn being supported and held in position thereby. Bolts 84- with appropriate nuts or similar fastenings pass through appropriate apertures provided in the clamping plates 74- and 76 and these bolts pass through eyes 86 formed on the inner ends of the flier wires or arms respectively indicated at 88 and 9t These bolts, together with the clamping plates, hold the flier wires or legs in the correct position, and it will be seen that these bolts secure the clamping plates to the outer bearing race 82 and clamp the flier wires or legs between the clamping plates 74 and 76. At the same time, they also maintain the flier wires or legs in a definite re lationship with respect to the supply spool 68 by reason of the positioning thereof with relation to the hub and the base of the hub at 66.

Each flier wire or leg is formed at its outer portion with a depending arm 92 upon which is formed a guiding eye or pigtail 94. Also, each flier wire or arm 88 or 90 is provided with an upper oflset wire 'as at 96, the

same having an eye or pigtail 98. These flier wires or arms being alike, the guide-eye 98 is reversed diametrically as shown in FIG. 2, but of course extends to the same side of the respective flier in the direction of rotation thereof.

Referring now to FIG. 1, the yarn Y extends from the package P and passing upwardly extends outwardly through the guide-eye 94. Thence it passes over and against the outer portion of the leg 88 or 90, then passing inwardly through the guide-eye 98. See also FIGS. 2 and 3 which illustrate that there is a drag or snubbing effect of the yarn on the flier wire or leg between the two eyes 94 and 98. This snubbing effect prevents the twisting action from extending rearwardly back into the yarn between the eye 94 and package P. In other words, the twist formed in the zone between eye 98 and the take-up spool 26 is blocked from reaching back into the ballooning zone in the member 38 and this greatly reduces yarn breakages due to the fiber ends as above explained. It also provides that a very uniform twist is maintained in the processed yarn because the zone of twisting is well controlled.

The direction of rotation of the supply package P determines the direction in which twist is inserted in the processed yarn. When the package is rotated clockwise, the yarn has 2 twist, and when rotated anti-clockwise, the yarn has 8 twist. Therefore two types of flier wires are required, one type for S twist and the other type for Z twist. FIGS. 1 to 4 show the flier wires or legs for Z twist and FIG. 5 shows the flier construction which is used for S twist. The only difference between the two types is that the eye 98 is at one side of the flier wire or leg, while the corresponding eye 100 in FIG. 5 is at the opposite side thereof. Changing from one type of flier leg to the other is quickly and conveniently accomplished as explained above.

With the above description taken in conjunction with the drawings, it is believed that it will be seen that all the objects of the invention have been carried out, and particularly that the zone in which the yarn is twisted is controlled in such a way as to maintain a uniform twist while at the same time preventing breakage. Furthermore, the parts are easily and quickly removed and replaced and there is provided a yieldable elastic driving connection between the flier mounting and the spindle in which the flier mounting is easily removed and replaced. At the same time, the construction is such as to provide for accurately positioning the various parts of the device and particularly they maintain the flier wires or legs in a definite relationship with respect to the supply spool.

Having thus described our invention and the advantages thereof, we do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what we claim is:

l. The combination in a twisting machine including a driven spindle supporting and rotating a yarn package and including means withdrawing the yarn upwardly from said yarn package, of a flier comprising a leg associated with said spindle and located between the yarn package and the yarn withdrawing means, said leg extending generally outwardly from the spindle and terminating in a position spaced from said spindle, guide-eyes mounted on the leg adjacent the terminal portion of the latter, said leg extending down, forming a shoulder, said guide-eyes and shoulder providing means snubbing the yarn and preventing the twisting action of the machine from extending back into the yarn between the guide-eyes and the yarn package, one guide eye being located below the leg and shoulder and the other guide-eye being located on and in offset relation to the leg, generally above the shoulder.

2. The twisting machine of claim 1 including means mounting the leg on the spindle and means for detachably clamping the leg in a predetermined relationship with respect to the mounting means.

3. A twister machine including a driven spindle for supporting and rotating a yarn package and having means to withdraw yarn from said yarn package, in combination with a flier construction comprising a central hub, said hub being removably mounted on the spindle and including a portion thereof adapted to abut and be positioned by the end of the yarn package on the spindle, means for mounting generally radially extending flier legs on said hub, yarn guiding and snubbing means at the outer ends of said flier legs, said flier leg mounting means comprising a bearing on the hub, a pair of plates holding the legs therebetween at diametrically opposite points relative to the hub, and means clamping the plates on portions of the legs.

4. A twister machine including a driven spindle for supporting and rotating a yarn package and having means to withdraw yarn from said yarn package, in combination with a flier construction comprising a central hub, said hub being removably mounted on the spindle and including a portion thereof adapted to abut and be positioned by the end of the yarn package on the spindle, means for mounting generally radially extending flier legs on said hub, yarn guiding and snubbing means at the outer ends of said flier legs, said flier leg mounting means comprising a bearing on the hub, a pair of plates holding the legs therebetween at diametrically opposite points relative to the hub, and means clamping the plates on portions of the legs, said yarn-guiding and snubbing means extending outwardly beyond the yarn pack-age and guiding yarn therefrom to the said yarn withdrawing means.

5. A twisting machine comprising a spindle to mount a supply spool thereon, in combination with a twister flier, said flier comprising a hub detachably mounted on said spindle, flier legs extending generally radially outwardly from the hub, and means detachably connecting the legs to the hub, said means comprising a pair of clamping plates detachably mounted relative to the hub, a bearing interposed between the hub and the plates so that the plates are relatively rotatable with respect to the hub, said means including a fastener for the plates, the legs being included between the plates.

6. The machine of claim 5 wherein the bearing includes an inner and an outer race, the inner race being located on the hub and the plates being removably mounted on the outer race.

7. The machine of claim 5 wherein the bearing includes an inner and an outer race, the inner race being located on the hub and the plates being removably mounted on the outer race, said fastener securing the plates to the outer race.

8. A twisting machine comprising a spindle to mount a supply spool thereon, in combination with a twister flier, said flier comprising a hub detachably mounted on said spindle, a removable bushing in the hub, means to secure the bushing to the hub, and means causing the bushing to yieldably grip the spindle, flier legs extending generally radially outwardly from the hub, and means detachably connecting the legs to the hub, a bearing on the hub, said last-named means comprising a pair of plates mounted on the bearing and supported thereby, said plates clamping the legs therebetween.

9. A twisting machine comprising a spindle to mount a supply spool thereon, in combination with a twister flier, said flier comprising a hub detachably mounted on said spindle, a removable bushion in the hub, means to secure the bushing to the hub, and means causing the bushing to yieldably grip the spindle, flier legs extending generally radially outwardly from the hub, and means detachably connecting the legs to the hub, a bearing on the hub, said last-named means comprising a pair of plates mounted on the bearing and supported thereby, and clamping means to cause the plates to clamp the legs and also to secure the plates to the bearing.

10. The combination in a twisting machine including a driven spindle supporting and rotating a yarn package and including means withdrawing the yarn upwardly from said yarn package, of a flier comprising a leg associated with said spindle and located between the yarn package and the yarn Withdrawing means, said leg extending generally outwardly from the spindle and terminating in a position spaced firom said spindle, guide-eyes mounted on the leg adjacent the terminal portion of the latter, said guide-eyes providing means snubbing the yarn and preventing the twisting action of the machine from extending back into the yarn between the guide-eyes and the yarn package, one guide-eye being located below the leg and the other guide-eye being located on and in offset relation to the leg, the leg extending downwardly at its end and forming an additional yarn snubbing means with the eyes, the offset eye being located inwardly from the end of the leg, the eye below the leg being located substantially at the end of the leg on the downwardly extending part thereof.

References Cited in the file of this patent UNITED STATES PATENTS 1,547,813 Herr et a1. July 28, 1925 Walker Mar. 30, Babcock et a1. Jan. 3, Munson Dec. 25, Follmer Mar. 19, Castelli July 23, McDermott Jan. 22, Schlums July 22, Burnell Apr. 25,

FOREIGN PATENTS France Nov. 26, Great Britain Jan. 27, Great Britain Dec. 21, Great Britain Apr. 3,

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