US2434964A - Yarn-transfer mechanism - Google Patents

Description

Jan. 27, 1948. M. J. RARICK YARN-TRANSFER MECHANISM Filed July 26, 1946 '6 Sheets-Sheet l INVENTOR.

' Ban ATTORNEY Jan. 27, 1948. J cK 2,434,964

YARN TRANSFER MECHAN 1 SM Filed July 25, 1946 5 Sheets-Sheet z g uvmvron ORGAN 41 RAR/cK ,ATZ' ORMEY.

ha. 2?, 194%., M. J. RARICK YAHN- TRANS FER MECHANI SM Filed July 26, 1946 6 Sheets-Sheet 3 IN V EN TOR.

'MORGANURAR/CA BY %./%zw

ATTORNEX Jan. 27, 19458. M, RA ICK 2,434,964

YARN- TRANSFER MECHANI SM Filed Jul y 26, 1946 e Sheets-Sheet 4 100 30 106 INVENTOR. 102' 3 MO/PG/WL/ RA/Q/cK v Afro/MEX Jan. 27, 1948.

M. J. 'RARICK I YARN-TRANSFER MECHANISM Filed July 26, 1945 6 Sheets-Sheet 5 Mmizwez sck ATTORNEX atented Jan. 27, 1948 -UNiTED STATES PATENT OFFICE YARN-TRANSFER MECHANISM Morgan 1. Rarlck, Buflalo, N. Y., assignor to E. I. du Pont de Nemours & Company, Wilmington, Del, a corporation of Delaware Application July 26, 1946, Serial No. 686,395 Y Claims. (01. 28-715) 1 This invention relates to a new and improved apparatus for transferring yarn from an element where the yarn is at a positive te'nsionlevel to an element where the yarn assumes a subneously transferring a plurality of -yams and which permits the removal of the wrapping of one or more yarnswithout interrupting the continuity of the operation.

Other and additional objects .will become apparent hereinafter.

The objects of the invention are accomplished, in general, by rotatably mounting a plurality of small individual fluted rolls on the periphery of a large rotatable wheel in such a manner that some of thefluted rolls are positively driven and some are stationary. The driving mechanism for the small fluted rolls is so constructed that the top rolls are positively driven while the bottom rolls are stationary. The driven fluted rolls include those which receive the plurality of yarns in the form of a warp sheet and advance them through the mechanism to the fluted roll from which the yarns are discharged. The fluted roll from which the yarns aredischarged is also driven and the point of discharge of the yarns is that at which a line tangent thereto is perpendicular to the floor so that the yarns upthe , 2 a rupted. While in the stationary position, the

- wrap is removed from the roll on which it de- Figure 2;

on discharge will descend in a vertical path to e the collection device.

Normally, during the transfer of the yarns by the fluted rolls above described, the rotatable wheel is stationary. When, however, a wrap develops on one of the rotating small fluted rolls,-

the wheel is rotated to a position wherein the roll on which the wrap has developed is stationary. The rotation of the wheel also advances one-or more of the fluted rolls which were previously in the inoperative stationary position into operative (rotating) position. During the removal of the roll on which the wrap developed from operative to inoperative position, the continuity of the veloped also without interrupting the continuity of the operation of the mechanism with respect to the other yarns.

Means cooperating with each of the fluted rolls are provided towarn the operator when a wrap has developed. In one form, such means comprise electrodes positioned in close, but spaced, proximity to the periphery of each fluted roll. Upon the development of a wrap, the electrodes actuate an electronic relay which, in turn, operates a, visible or audible signal to warn the operator. Alternatively, the electronic relay can be attached to-a motor starter, whereby upon development of a wrap the wheel will be automatically rotated to move the roll having the wrap from operative to inoperative position.

The details of the invention will be more clearly apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a diagrammatic elevation showing the yam-transfer mechanism in position to receive the yarns under a positive tension from processing rolls and deliver said yarns onto a yarn-collecting device where the yarns assume substantially zero tension;

Figure 2 i a side view, partly in section, oi the transfer mechanism;

Figure 3 is a section taken on the line 3-3 of Figure 4 is a section taken on the line 44 of Figure 2;

Figure 5 is an end view, partly broken away I and looking to the right in Figure 2; I

t Figure 6 is a section of the end bearing and seal of the fluted roll;

Figure 7 is a cross-section of the electrode bearing and also shows a portion of an electrode v in section;

Figure 8 is a vertical section of one form of Figure 10; Figure 12 is a side elevation of still another form of fluted roll;

Figure 13 is a section taken on the line I 3-43 of Figure l2; w

Figure 14 is a wiring diagram of a circuit in cluding a visible or audible signal to warn the operator of the development of a wrap; and

Figure 15 is a wiring diagram of a modified construction.

Referring now to the drawings, wherein like reference numerals designate like parts, and particularly to Figure 1, the reference numeral I designates a plurality of wet rayon yarns arranged in spaced parallel relationship to form a warp sheet being drawn from a series of stretching rolls, on which each yarn has been subjected to high tension, by positively driven rolls I0, I6 and I8. The warp sheet I0 is delivwheel which is rotatably mounted and will be one of'which is shown, and conveys the yarns for further processing, such as washing and purification. In the form shown, the surface of the belt 22 which receives the yarn is horizontal and parallel to the floor. The speed of travel of the belt 22 is such that no tension will be imposed on the freely-falling yarns. Consequently, each of the yarns collected on the belt 22 assumes a substantially zero tension level.

'The yarn-transfer mechanism comprises a plurality of small fluted roll 39 arranged in a squirrel cage assembly. All of the fluted rolls 30 are of identical construction and each roll 30 is secured to its respective shaft 32. The shafts 32 are mounted identically in the mechanism, and hence the mounting of one shaft 32 will be described in detail.

The rear end of shaft 32 is rotatably mounted in a rear bearing, generally designated by the reference numeral 34 and carried on a rear bearin support 36 which, in turn, is secured on a hub 38. The front end of each shaft 32 is rotatably mounted in an individual front bearing, generally designated by the reference numeral '40. Each of the front bearings 40 is carried in a separate section 02, which is secured adjacent the bottom thereof to a central flange 04.

As shown in Figures 3 and 5, each section 42 is in the form of a trapezoid, and thesections 42 are arranged so that the side edges of ad- Jacent sections are in abutting relationship with the smaller bases disposed on the central flange 04. A gusset 46 is positioned over each of the joints formed by the abutting edges of adjacent sections 42, and, by means of bolts 58, join the adjacent sections 42 together.

The central flange M is secured to the hub 38 which extends transversely of the mechanism. At the rear end (see Figure 2), thehub is secured to a shaft 50, which is operatively connected to means whereby it is driven in a manner hereinafter more fully explained. The shaft 50 is rotatably mounted in a bearing 54 carried by a bearing support 56 appropriately mounted in the machine.

The hub 38 at the front end of the mechanism is secured to a shaft 60, which is 'rotatably mounted in a bearing 62' carried on a channel iron frame 64. The front end of the device is protected by a guard plate 5|. It is to be noted that the upper half of the guard plate Si is removably bolted to the channel 64. When removed from position, any of the rolls 30 exposed thereby can be removed as a unit as will hereafter be more fully explained.

The hub 38, together with the rear bearing supports 38 and the central flang 44 to which rotated when rotary movement is imparted to the shaft 50. Upon rotation of the wheel, the

fluted rolls 30 which are mounted in the pcriphery of the wheel will be revolved and thus advanced to different positions along the periphery.

Each of the shafts 32 ofeach-of the rolls 30 is provided at the rear end thereof with an individual sheave I0. A belt I2, driven as here-', after explained, passes over onlycertain of the sheaves T0 to impart rotary motion thereto. Rotation of such sheaves will be transmitted to the respective shafts 32 on which they are mounted and the rotation of such shafts will be imparted to the respective rolls 30 carried thereon. The sheaves over which the belt [2 does not pass remain stationary, and hence the rolls on the shafts 32 which carry such rolls also remain stationary. 1

In the form shown (see Figure 4) eight fluted rolls 30 are mounted in the periphery of the-wheel and the belt 12 is so positioned that it will rotate five of the rolls while three of the rolls are stationary. As shown in Figure 4, the rolls which are rotated are in substantially the upper half of the wheel.

The belt I2 is driven by a sheave 76 secured on a shaft I8 continuously driven by any suitable means (not shown). Means are also provided to take up any slack in the belt 12. In the form shown, thi is secured by a belt-tightening roll 82 continuously engaging the inner surface of the belt 72. The roll 82 is rotatably mounted on a stud 04 carried at one end of a link 86 of a bell-crank lever. The bell-crank lever is provided with a boss 88 through which the shaft I8 extends and on which the bell-crank lever is pivotally disposed. The other arm 90 of the bellcrank lever is secured at the end thereof, as at 92, to one end of a spring 94. The other end of the spring 94 is secured to a fixed support 95 carried on an I-beam 96 appropriately positioned in the machine. As is apparent, the length of the link 86 determines to a certain extent, the number of sheave which will cooperate with the belt drive l2.

It will be apparent that, due to'the tension of the spring 94, the roll 82 will be continuously urged against the belt I2 and serve as a belt tightener.

The fluted roll drive mechanism is enclosed in a housing 96'. The inner end of the housing is provided with an annular hannel 91 into which the rear bearing support 36 extends. The channel 91 receives the liquid which may pass from the yarn. A drain 98 permits removal of such liquid from the channel. The housing is also provided with a drain 99.

The rear and front bearings 34 and 40 are subthreaded portion I06 of the shaft 32. The nut I04 is seated on a washer I08 and is locked in position by means of a star lock III). A key slot II2 alsoaids in securing the nut I04 and the washer I88 in position. The rotatable member I82 is provided with an annular groove formed between flanges II4 and Ill and into which a flange I I8 of the non-rotatable member I I8 of the seal extends. The non-rotatable member H8 is provided with an annular groove formed by the flange H8 and a flange III, and the flange II5 of the rotatable member I82 extends therein. The non-rotatable member H8 is carried by the section 42. The bearing is of the ball-bearing self-aligning type and is generally designated by the reference numeral I22. The bearing housing I24, the se ment 42 and the non-rotatable member II8 of the seal are secured together by screws I28. A grease cup I25 permits greasing of the bearing. A retaining ring I88 is secured to the shaft by means of the set screw I82-and aids in maintaining the bearing in position. A guard I34 is secured to the bearing housing I24 by means of a set screw I38.

In the preferred form, compressed air is utilized for scavenging the bearing and seal of moisture-filled air which might cause corrosion. In the form shown, this is obtained by continuously feeding compressed air (supplied in any convenient manner at the operator's end of the apparatus) to a drilled passage I21 in the shaft 32. The passage I21 communicates through a passage I28 to the passage I28 whichis connected to an outlet pipe I3I.

The construction of the bearing and seal just described is that at the front of the machine. The hearing at the rear of the machine is identical in construction, except that it is secured to the bearing support 38 instead of the sections 42.

From the foregoing description, it is apparent When a wrap develops on a roll, it will quickly become of a size so that it will contact the electrodes, causing a short circuit whereby thebrush I42 will be grounded and the electronic relay I5I actuated to close the circuit withthe signal I52, and the operator will be warned of the presence of a wrap of yarn on the roll periphery. When such a condition exists, the wheel is revolved, without any interruption of any of the other parts,

about the shaft 58 until the roll which contains the wrap is moved to a position along the periphery of the wheel where it is stationary and notperiphery of the wheel where it is stationary and that upon removal of the upper section of the j guard plate 5| at the front end of the machine and removal of the bolts securing the appropriate section 42 to adjacent sections and on the central flange 44, a roll can be removed from the machine by sliding endwise after being released from the rear bearing. Thus, any roll can be advanced to a position along the upper half of the periphery of the wheel and be removed for any desired purpose and subsequently returned to position for future advance into operation.

The apparatus is provided with means which will warn the operator when a wrap has developed on one of the rolls 38. In the form shown (see 7 Figure 4) a collector ring I48 is mounted on the surface of each of the rolls 88. Each electrode I48 is grounded to the frame, and each electrode I58 is connected, as by a pigtail, to the collector ring As shown in the wiring diagram (Figure 14), the circuit includes a well-knownelectronic relay I5I and a signal I52 of either the visible type, such as a lamp. or audible type, such as a bell. The electronic relay I5I has a terminal I53connected to the brush I42 and will-function to close the switch I54 of the circuit, including the signal I52, whenever the terminal I53 is connected to ground. j

where the wrap is removed and simultaneously advance a number of rolls intorotating position to correspond with the number of rolls removed to stationary position. The automatic rotation of the wheel can be in addition to warning the operator of the development of a wrap.

Referring now to Figure 15, the reference numeral I 55 designates four segments of a rotating commutator rigidly secured to the drive end of the shaft 58 which is returned to ground through grounded electrodes I48. Five stationary wired brushes I58 connected in parallel cooperate with the commutator segments I55, and each of the electrodes I58 is connected progressively to a, commutator bar I55. A bus bar I5! is connected tothe terminal I53 of an electronic relay I5IA. A bus bar I5'IA connecting three of the wired brushes I58 leads to electronic relay I5I. Upon the formation of a wrap, the electronic relay I5 IA will be actuated to close the switch I54 of the circuit, which includes a motor starter whereby the motor which is operatively connected to the shaft 58 will drive said shaft. Upon advancement of any segment I beyond contact with the wired brushes I56 associated with bus bar I51,

the circuit to the electronic relay I5IA will be opened and rotation of shaft 58 will cease while the circuit to the electronic relay I5I is closed, actuating the warning device. By proper positioning of the wired brushes I56, a roll 38 can be made to rotate out of operating position into a stationary position. This results because the commutator, being attached rigidly to the shaft 58, is in approximately the same angular position as 1 that of the wrapping roll and will move with this roll to a positionselected out of operating position.

The electrodes I48 and I58 are mounted at a fixed spaced distance relative to the periphery of the respective roll with which they cooperate and in a manner which will permit the electrodes to be pushed away from the roll, and, after the force pushing the electrodes has been released, the electrodes will return to their original position.

Thus, when a wrap develops on a roll, it will rapidly increase in diameter and engage the electrodes which will be pushed in a direction away from the roll. Upon removal of the wrap as herein described, the electrodes will be restored to their original position. I

Each of the electrodes I48 and I58 is of identical construction and extends over the entire width ofthe roll. As shown in Figure'l, each electrode is provided with an arm at each end thereof which carries a boss I60 through which a shaft I62 extends. A taper pin I63 passing throughaligned holes in the boss I60 and the shaft I62 secures the shaft in the respective boss.

The shafts I62 which carry the electrodes I56 are formed of a suitable non-conductive material. The shafts I 62 which carry the grounded electrodes I48 can be formed of any appropriate material, either conductive or non-conductive. As shown in Figure 7, a pigtail I65, connected at one end thereof to the electrode, is connected at the other end thereof either to the ground or to the.

collector ring, depending on which pair of electrodes are mounted on the respective shaft I62.

One end of each individual shaft I62 (see Figure '7) is rotatably mounted in a long sleeve I64 appropriately mounted in the apparatus. short bushing I10, formed of, for example, a phenol formaldehydecondensation product with a fibrous binder, is positioned intermediate the sleeve I64 and adjacent the end of the shaft I62. The end of the shaft I62 isprovided with a chisel point depression in which a chisel point I80 is normally seated. The chisel point is formed at the bottom of a cup I84 which is slidably positioned in the sleeve I64. A key I88 between the cup I84 and the sleeve I64 prevents backlash. A spring I90 is positioned in the cup and is maintained therein by a flanged cap I94, threadedly secured in the interior of the sleeve I64.

From the foregoing description of the electrode bearing, it is manifest that, when an electrode'is moved by any force whatsoever away from the roll, the shaft I62 will be rotated. Upon rotation of the shaft I62, the chisel point I80 will ride to the left in Figure 7, compressing the spring I90. Upon release of the force moving the electrode, the chisel point I80 will ride to the right in Figure '7, thus rotating the shaft to its original position. I

The electrode can be positioned to any fixed distance relative to the periphery of the roll by rotation of the shaft I62 to the position, required. Thereafter, the chisel point I80 is positioned in the depression and secured therein under the spring tension.

Even though the electrode shaft I62 is noml- Preferably, means are also provided to scavenge the electrode shaft bearing of moisture-filled air which might cause corrosion. In the form shown, this is obtained by continuously feeding compressed air, supplied in any convenient manner, at the operators end of the apparatus through a drilled passage 20I extending in the shaft. The drilled passage communicates through a port 202 with a passage 263 which, in turn; is connected to an outlet pipe 204.

The electrode bearing at the opposite end of the shaft is substantially identical with that hereinbefore described except that the spring and.

chisel point construction are omitted. 7

As previously mentioned, each shaft I62 carries a pair of electrodes I48 or a pair of electrodes I50.

In the construction shown in Figure 3, both of the 8 electrodes carried by a single electrode shaft I62 do not cooperate with one roll, but the electrodes on one shaft cooperate with adjacent rolls.

The rolls are constructed from materials which are resistant to the treating solutions to which the yarn was subjected prior to transfer. In the case of viscose yarns, the elements of the roll should be constructed of a material which is resistant to water, dilute acids, complex inorganic sulfur oompoun$, and mineral salt solutions.

Examples of such construction materials are hard rubber, stainless steel, plastics. glass, porcelain, enameled steel; rubber covered steel. etc.

Several illustrative embodiments of rolls which can be used are shown in Figures 8 to 13 inclusive. Referring now to Figure 8, the roll therein shown comprises a tubular steel body member 250 which is secured at each end thereof, as by welding, to end pieces 252. Each end piece is provided with a central hub 254. in which a shaft (not shown) is mounted. The roll is secured to the shaft in any appropriate manner, as by a set screw passing through the holes 256 in the hubs 254. The tubular member 250 is formed with spaced rounded upward projections 258 which extend across the entire Width of the roll. A rubber covering 260 extends over the entire peripheral wall of the tubular member 250 and forms a fluted roll in which the yarn-contacting surface is rubber.

Figure 10 discloses a fluted roll 270.

Figure 12 discloses a roll 200 in which the periphery of the roll is provided with a plurality of spaced grooves 282. The top corners of the grooves are rounded and in each of the grooves a glass rod 284 is positioned. The glass rods are secured in place by bands 286.

In operation, a plurality of wet viscose rayon yarns, in the form of a warp sheet I0, are withdrawn by the rolls I4, I6 and I8 and are fed so that the yarns will be delivered to a roll 30 adjacent the top of the transfer apparatus. While the yarn is being delivered thereto, the wheel is stationary, i. e. not being revolved by shaft 50. However, due to the belt drive, five of the rolls 30 in the upper half of the wheel are being rotated about their shafts 32 while the three rolls in the lower half of the wheel are stationary. The rotation of the roll on which the yarn is received advances it to the rotating roll infront thereof.

The advancing of the yarn from one roll 30 to the next roll 30 is continued until it has been advanced .to a roll 30 which has a point on the periphery thereof from which a tangent is perpendicular to the floor. When the yarn reaches this point, the roll discharges the yarn and it descends in a vertical path to the collection device. The yarn is discharged at a discharge point by reason of the flute being rapidly withdrawn from the yarn and the force of gravity on the free-falling yarn.

During the above operation, the bottom three rolls remain stationary. When a wrap develops on one of the rotating rolls 30 which advances the yarn .through the apparatus, it will rapidly build up and engage the electrodes, which will in turn actuate the electronic relay and indicate that a wrap has developed. At this time, the shaft 50 is rotated at a relatively low rate of speed, such as, for example, 4 R. P. M.

Rotation of the shaft 50, as mentioned, will revolve the wheel and it will be stopped when the roll on which the wrap developed is advanced to a position along the periphery of the wheel where it is not driven. by the belt drive and is stationary.

the rotation of the'wheel about the shaft 50, the

transfer of the yarn. was not interrupted- As soon as one roll 30 was removed out of cooper-.

ative relationship with the belt 12, another roll was advanced into position where .it was driven by the belt drive so that, at all times in the construction shown, five rolls were being continuously rotated about their respective axes to ad vance the yarn through the apparatus to the discharge point.

The source of power for driving the shaft (not shown) can be a gear-reducer motor combination which is switched on and off to produce the de sired part of a revolution of the unit. Any clutch or other momentary engaging device coupled to a constantly rotating shaft of the correct speed can also be used. A magnetic brake for quickly stopping can be used so long as there is insufiicient friction in the unit to bring it .to rest when the power is disconnected.

The individual fluted rolls 30 can be operated to rovide a surface velocity of 1,000" to 20,000" or higher per minute.

For 1100-denier yarn, the yarn tension at the input may vary up to a high value of 50I rams. The oncoming tension level depends on the difference in speed between the yarn and the trans fer rolls. Thoughslippage is not critical, best results are obtained when there is from 2% to 5% slippage between the rolls and the yarn.

In the construction shown, wherein the assembiy contains eight rolls, five of which are driven, the yarn should enter the unit so that it will contact at least four of the rotating rolls from the point of entrance to the point of discharge.

With yarn of 1100-denier, the free-fall distance from the discharge point of the yarn to the collecting receiver must be at least 27", although it is desirable that this free-fall distance be at v least 40".

The invention is particularly suitable with the transfer of yarns of a. denier above 500, such as 1100, 2200, etc. However, the invention can be employed to transfer yarns of deniers less than 500, such as 250, 150, etc. In general, the lower the denier, the greater the free-fall distance. Thus, with yarns below 500 denier, the free-fall distance must be greater than 40", The precise free-fall distance for any particular denier can be obtained by xperiment.

The moisture content of the yarn is not critical. However, for best results the yarn should be soft and pliable, such as is the condition when viscose yarn is wet with 200% to 600% of water.

The invention is particularly suitable With-V15? cose rayon tire cord yarn but can be used, in general, for the transfer of yarn from a positive tension level to a collection device at substantially zero tension level or for the transfer of yarn for any purpose whatsoever.

Though in the embodiment described the squirrel cage assembly consists of eight rolls, the invention is not restricted to such number of rolls.

Transfer mechanisms wherein the squirrel cage assembly contains six rolls 'can be employed. When the apparatus contains six rolls, the four rolls in the upper part of the wheel will be driven and the yarn should be fed therein so that it will be conveyed by at least three of the four driven rolls to the point of discharge.

In place of fluted rolls, mechanisms, including transfer belts and chains of the type disclosed in the co-pending application of Edward S. Balthrop, Jr., Serial No, 677,890, filed June 19,

- as set forth in the appended claims.

I claim: 1. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therebeneath, a rotatable wheel having a plurality of yarn-supporting means 'rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yam-supporting means including those which receive and advance the yarns to discharge position on one of said yarn supporting means while the remaining yarnsupporting means are stationary, and means to rotate said wheel to dispose a yarn-supporting means into stationary position and simultaneously advance a previously stationary yarn-supporting means into position where it is rotated. 2. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therebeneath, a rotatable wheel having a plurality of yarn-supporting means rotatabiy mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supporting means including those which receive and advance the yarns to discharge position on one of said yarnsupporting means while the remaining yarn-supporting means are stationary, means cooperating with each of said yarn-supporting means to indicate when a wrap of yarn develops on the respective rotating yarn-supporting means, and means to rotate said wheel to dispose the yarnsupporting means on which the wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means intorotating position to correspond with the number of yam-supporting means removed to stationary position.

3.'In an apparatus for simultaneously transferring a plurality .of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therebeneath, a-rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a, predetermined number of said yarn-supporting means including'those which receive and advance the yarns to discharge position'on one of said yarnsupporting means while the remaining yarn-supporting means are stationary, means'to rotate said wheel to position the yarn-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means into rotating positi-on to correspond with the number of yarn-supporting means removed to stationary position,

and means actuating the means to rotate said plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supportin means including those which receive and advance the yarn to discharge position on one of said yarnsupporting means while theremaining yarn-supportin means are stationary, means to rotate said wheel to dispose a yarn-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means into rotating position to correspond with the number of yarnsupporting means removed to stationary position, a pair of electrodes cooperating with each of said yarn-supporting means and adapted to be engaged by the yarn of a wrap which develops on the respective yarn-supporting means, and means electrically connected to said electrodes to actuate a warning signal when the yarn on any yarn-supporting means engages said electrodes.

5. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supporting means including those which receive and advance the yarn to discharge position on one of said yarnsupporting means while the remaining yarnsupporting means are stationary, means to rotate said wheel to dispose a yarn-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yam-supporting means into rotating position to correspond with the number of yarnsupporting means removed to stationary position, a, pair of electrodes cooperating with each of said yarn-supporting means and adapted to be engaged by the yarn of a wrap which develops on -the respective yarn-supporting means, and means electrically connected to said electrodes to actuate the means to rotate said wheel when the yarn on any yarn-supporting means engages said electrodes.

6. In an apparatus for simultaneously transferring a, plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supporting means including those which receive and advance the yarn to discharge position on one of said yamsupporting means while the remaining yarn-supporting means are stationary, means to rotate said wheel to dispose a yam-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yarnesupporting means into rotating position to correspond with the number of yamsupporting means removed to stationary position, a pair of electrodes cooperating with each of said yarn-supporting means and adapted to be engaged by the yarn of a wrap which develops on the respective yarn-supporting means, and means electrically connected to said electrodes to actuate a warning signal and the means to rotate said wheelwhen the yarn on any yarn-supporting meansv engages said electrodes.

7. In an apparatus for simultaneously transferring a pluralitybf yarns arranged in a warp i2 sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supporting means including those which receive and advance the yarn to discharge position on one of said yarnsupporting means while the remaining yarnsupporting means are stationary, means to rotate said wheel to dispose a yarn-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means into rotating position to correspond with the number of yarn-supporting means removed to stationary position, a pair of electrodes'cooperating with each of said yarn-supporting means and adapted to be engaged by the yarn of a wrap which develops on the respective yarn-supporting means, each pair of electrodes being mounted on a shaft, means cooperating with said shaft to permit it to be rotated in a direction so that said electrodes when engaged by a wrap will be moved awayfrom said yarn-supporting means and re-' stored to original position upon removal of said wrap, and means electrically connected to said electrodes to actuate a warning signal when the yarn on any yarn-supporting means engages said electrodes.

8. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yarn-supporting means including those which receive and advance the yarn to discharge position on one of said yarn-supporting means while the remaining yarn-supporting means are stationary, means to rotate said wheel to dispose a yarn-supporting means on which a wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means into rotating position to correspond with the number of yarn-supporting means removed to stationary position, a, pair of electrodes cooperating with each of said yarnsupporting means and adapted to be engaged by the yarn of a wrap which develops on the respective yarn-supporting means, each pair of electrodes being mounted on a shaft, means cooperating with said shaft to permit it to be rotated in a, direction so that said electrodes when engaged by a wrap will be moved away from said yarnsupporting means and restoredto original position upon removal of said wrap, and means electrically connected to said electrodes to actuate the means to rotate said wheel when the yarn on any yam-supporting means engages said electrodes.

9. In an apparatus for simultaneously transferring a. plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of yarn-supporting means rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said yam-supporting means 13 which a wrap develops into position where it is stationary and simultaneously advance a number of yarn-supporting means into rotating position to correspond with the number of yarn-sup orting means removed to stationary position,- a pair of electrodes cooperating with each of said yarnsupporting means and adapted to be engaged by the yarn of a wrap which develops on the respective yarn-supporting means, each pair of electrodes being mounted on a shaft, means cooperating with said shaft to permit it to be rotated in a direction so that said electrodes when engaged by a wrap will be moved away from said yarnsupporting means and restored to original position upon removal of said wrap, and means electrically connected to said electrodes to actuate'a warning signal and the means to rotate said wheel when the yarn on any yarn-supporting means engages said electrodes.

10. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of fluted rolls rotatably mounted in spaced relationship on the periphery thereof,

, means to continuously rotate a predetermined number of said fluted rolls including those which receive and advance the yarn to discharge position on one of said fluted rolls while the remaining fluted rolls are stationary, means to rotate said wheel to dispose a fluted roll on which a wrap develops into position where it is stationary and simultaneously advance a number of fluted rolls into rotating position to correspond with the number of fluted rolls removed to stationary position, a pair of electrodes cooperating with each of i said fluted rolls and adapted to be engaged by the yarn of a wrap which develops on the respective fluted roll, and means electrically connected to said electrodes to actuate a warning signal when the yarn on any fluted roll engages said electrodes.

11. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of fluted rolls rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said fluted rolls including those which receive and advance the yarn to discharge position on one of said fluted rolls while the remaining fluted rolls are stationary, means to rotate said wheel to dispose a-fluted roll on which a wrap develops into position where it is stationary and simultaneously advance a numberof fluted rolls into rotating position to correspond with the number of fluted rolls removed to stationary position, a pair of electrodes cooperating with each of said fluted rolls and adapted to be engaged by the yarn of a wrap which develops on the respective fluted roll, and means electrically connected to said electrodes to actuate the means to rotate said wheel when the yarn on any fluted roll engages said electrodes.

- 12. In an apparatus for simultaneously trans-- ferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of fluted rolls 'rotatably mounted in ing fluted, rolls ar stationary, means to rotate said wheel to dispose a fluted roll on which a wrap develops into position where it is stationwith the number of fluted rolls removed to stationary position, a pair of electrodes cooperating with each of said fluted rolls and adapted to be engaged by the yarn of a wrap which develops on the respective fluted roll, and means electrically connected to said electrodes to actuate a warning signal and the means to rotate said wheel when the yarn on any fluted roll engages said.

electrodes.

13. In an apparatus for simultaneously trans-- ferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced distance therefrom, a rotatable wheel having a plurality of fluted rolls rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said fluted rolls including those which receive and advance the yarn to discharge position on one of said fluted rolls while the remaining fluted rolls are stationary, means to rotate said wheel to dispose a fluted roll on which a wrap develops into position where it is stationary and simultaneously advance a number of fluted rolls into rotating position to correspond 1 with the number of fluted rolls removed to stationary position, a pair of electrodes cooperating with each of said fluted rolls and adapted to be engaged by the yarn of a wrap which develops on the respective fluted roll, each pair of electrodes being mounted on a shaft, meanscooperating with said shaft to permit it to be rotated in a direction so that said electrodes when engaged by a wrap will be moved away from said fluted rolls and restored to original position upon removal of said wrap, and means electrically connected to said electrodes to actuate a warning signal when the yarn on any fluted roll engages said electrodes.

14. In an apparatus for simultaneously transferring a plurality of yarns arranged in a warp sheet to a collection device positioned at a spaced I tion on one of said fluted rolls while the remaining fluted rolls are stationary, means to rotate.

said wheel to dispose a fluted roll on which a wrap develops into position where it is stationary and simultaneously advance a number of fluted rolls into rotating. position to correspond with the number of fluted rolls removed to stationary position, a, pair of electrodes cooperate ing with each of said fluted rolls and adapted to be engaged by the yarn of a wrap which develops on the respective fluted roll, each pair of electrodes being mountedon a shaft, means cooperating with said shaft to permit it to be rotated in a direction so that said electrodes when engaged by a wrap will be moved away from said fluted rolls and restored to original position upon removal of said wrap, and means electrically plurality of fluted rolls rotatably mounted in spaced relationship on the periphery thereof, means to continuously rotate a predetermined number of said fluted rolls including those which receive and advance th yarn to discharge position on one of said fluted rolls while the remaining fluted rolls are stationary, means to rotate said wheel to dispose a fluted roll on which a wrap develops into position where it is stationl6 tated in a direction so that said electrodes when engaged by a wrap will be moved away from said fluted rolls and restored to original position upon removal of said wrap, and means electrically con- & nected to said electrodes to actuate a warnin signal and the means to rotate said wheel when the yarn on any fluted roll engages said electrodes.

MORGAN J. RARICK.

REFERENCES omen The following references are of record file oi this patent;

UNITED STATES PATENTS in the Number Name Date 1,857,161 Alden Mar. 1, 1932 2,317,747 Ewing Apr. 27, 1943

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