US1903588A - Regulator for winding on installations - Google Patents

Description

April 11, 1933.

J. DETHIER REGULATOR FOR WINDING ON INSTALLATIONS Filed July 8, 1930 2 Sheets-Sheet l INVEN R JosfiPH DETH/ER ATTORNEY April 11, 1933. J. DETHIER REGULATOR FOR WINDING ON INSTALLATIONS 2 Sheets-Sheet 2 Filed July 8, 1930 INVENTDR JosEPw BETH/5R ATTORNEY Patented Apr. 11, 1933 UNITED STATES: PATENT oFFicnQi aosnrn nn'rnrnn, or BRUSSELS, BELGIUM 4 REGULATOR son. WINDING on INSTALLATIONS I Application filed July 8, 1930, Serial No. 466,570, and i France my i0, 1929. j

' a regulator tor A self-acting mule comprises fixed parts such as the headstock and the creel tor carryot roving, and a movable part such as the'carriage for supporting a row ot spindles inclined to the vertical and towardsthe creel, and travelling to and tro,

trom the creel to the front ot the headstock (run-outot carriage) and backto the creel (run-in of carriage) The spindles are rotated by the tin roller.

On the carriage and in proximity to the spindles are also mounted members called the winding taller and the on shatts parallel to row ot spindles and and counter taller shatts.

the

counter taller, keyed direction of the called winding taller The roving comingtrom each spool passes between teed' rollers mounted on a fixed part rigid with the creel and is then secured to the lower part of the spindle and wound tor a few turns as latter.

taras the point of the When the carriage runs out, the teed rollers turn and deliver the slivers to the corresponding spindles which turn rapidly.

however, the spindles are inclined to the vertical, the slivers cannot wind on become twisted and they are time drawn out in view ot the jump over and at the same them but tact that the speed ot delivery of the said rollers is lower than of the carriage. tront ot the headstock and the speed of outward 'run The carriage reaches the stops. Backingoit is then eitected; that is, the spindles turn in the opposite direction in the few turns which have orderto unwind previously been wound on them; but in order to prevent these threads from kinking or torming snarls, the supplementary length comingrtrom the unwound part is taken up between the winding taller and the counter fallen in the tollow ing manner; during the run-out ot the car.-

riage, taller the winding, taller and the counter have no actionv on the yarn and are arranged so that the winding taller ishaboye the yarn proceeding from the feed rollers; to

the spindles andthe conntertallerisjhelow" the said yarn. When ba'cking ofii, the wind ing taller descends and the counter taller rises, and consequently they tension the threads. When the backing-oft is terminated, the'counter taller is tree and its position is determined by the tension in the threads withwhich 'it comes into contact.

The winding-on then takes place; The carriage runs in and the spindles are driven by the tin roller in the direction of rotation they tollowed during the outward run ot the carriage and they wind on themselves the-threads guided by the winding taller and the counter taller. w

The length of thread comprised between the winding taller andthe' countertaller during winding-on is called the reserve. Al most at the end of the winding-on, the winding taller and the counter taller return to their inoperative position corresponding to the outward run otthe carriage, and the reserve which is lett to itselt winds on the spindle from the point at which the last turn is'wound as taras the point of the spindle. Thisreserve diminishes as the cop is formed, since the tree length ot the spindle dimin- 5 ishes more and more. While becoming less, however, this reserve must remain normal at all stages 'otthe, formation of the cop; that is, tor a given-layer 0t yarnto'be wound on the spindle, the reserve mustneitherinthrough which the tin roller is driven. 1 -l As thecop increases in size,.the diameter increases, and thus, tor one and thesame length or delivery to be wound on, the, spin.- dles must make tewer' revolutions andyt-he nut must consequently rise on theqquadrant arm. But it the nut rises by too largfej'an amount,.the number of turns of the spindle; decreases-,and as the length of deliverytobe wound on is constant, the reserve increases,v 10o thus producing snarls in the threads; if the nut rises by too small an amount under the above conditions, the reserve decreases and the threads brea The object of the invention is thus to provide a regulator, the object of which is to make the reserve maintain its normal value for each delivery, and for this purpose the said regulator makes the above-mentioned nut descend when the reserve increases above the normal value and makes it rise when the reserve falls beyond the said value.

However, as stated above, after backingofl", the counter faller is free and its position is determined solely by the tension of the threads. Consequently the, counter faller trolled.

which, when the reserve increases or decreases, varies the position of the quadrant screw, must have its action on this screw con- For this purpose, according to the invention, a systemof cams is keyed on the shaft of the winding faller. The first cam controls the action of the counter faller on the screw when the latter must rise, and the second cam controls the action of the counter faller on. the screw when the latter must descend.

- The accompanying drawings illustrate, by way of example, and in a non-limiting manner, one form of construction of the invention.

Figure 1. is a view of the mule fitted with the regulator according to the invention.

Figure 2 is an enlarged'view of the regulator according to'the invention.

' The self-acting mule shown in Fig. 1 comprises fixed parts such as headstock 15a, 15b,

' a creel (not shown) which'carries the spools of roving, and a movable part, the carriage 10, supporting a row of spindles such'as 2 inclined to the vertical and towards the back of the headstock 15a, and traversed by means of wheels, alternatively from the back of the headstock 15a to the front 156 (run-out of carriage) and from the front 15?) to the back of the headstock 15a (run-in of carriage).

In proximity to the above-mentioned row of spindles and carried by the carriage is situated amember 5 called the winding faller and a'member 7 called the counter faller which are keyed, respectively, on the winding faller shaft 5a and the counter faller shaft 70, the function of which will be'described hereinafter.

The roving coming from each spool mounted onthe creel passes between the feeding and drawing rollers 2a and from there is attached to the lower part of its spindle and Wound for some turns as far as the point of the latter. V

When the carriage 10 runs out, the feeding and drawing rollers turn'and deliver the rov ingsto their corresponding spindles 2 which,

turn rapidly, being driven by a tin roller 4e back of the carried by the carriage 10 and driving the spindles by means of a cord 4d passing over a whorl 4c keyed on each spindle. However, on account of the fact that the spindles are inclined to the Vertical, the yarns jump over the point of the spindles and, consequently, each time they, jump they receive a twist. The carriage continues to move away from the back of the headstock 15a, and as the feeding and drawing rollers 2a have a speed of delivery which is less than the speed of run-out of the carriage, the rovings' are drawn and at the same time twisted and become yarn. V The carriage 10 reaches the front of the headstock 15b and stops. Backing-off then takes place, that is, the spindles 2 makea few revolutions in the opposite direction to the previous one in order to unwind the few turns of yarn previously wound on the spindles, and in order to prevent these threads from slackening and forming snarls, the length unwound is taken up between the winding faller 5 and the counter faller 7 in the following manner: During the run-out of the carriage, the winding faller and the counter faller occupy the position shown in Fig. 1, that is, they have no action onthe thread proceeding from the feedrollers 2a to the spindles, because the winding faller is above the threads and the counter faller is below them; When backing-off takes place, the winding faller descends and the counter faller risesand, consequently, they take up the length of backed-0E yarnand tension the threads. T I 7 When the backing-off is completed, the counter faller takes up a position determined solely by its contact with the threads which it tensions by means of a counterweight (not shown). I,

The threads are then wound on the spindles. The carriage 10 runs in towards the back of the headstock 15a, the spindles are driven by the tin roller in the direction of rotation which they had during the run-out of the carriage, and the threads are wound on them guided by the Winding faller and the counter faller.

During the Winding-on, the spindles are driven bythetin' roller which is operated in the followingmanner: A quadrant 16d provided with an arm 16 is mounted on the front of the headstock 15b and is pivoted on the latter at 166. This? arm is traversed by a screw 12a along which moves a nut 120 connected by a chain 16g to the drum 4g upon which it is wound. 5 This drum. is rigid with a pinion 4h meshing with a pinion 4f keyed upon the tin roller 46. During the winding-on, the carriage 1O approaches the 16d swings towards the back of the headstock 15a under a control (not shown).

As a result of the twoabove-mentioned headstock lfiaand the quadrant I movements, the chain 16g unwinds from the barrel lg and produces the rotation of the tin roller and, consequently, of the spindles. Itwill be understoodthat the number of turns of the spindles during winding-on is a function of the length of chain unwound from the barrel and that this depends upon the position of the nut 120 on the screw 126;. Moreover, as the cop is formed on the spindle its diameter increases, and as the length to be wound on is constant, the spindles must make. less turns, so that the nut must rise little by little on the screw 120;.

The length of yarn comprised between the winding faller and the counter faller during winding-on is called the reserve which, at the end of the winding-on operation, must wind on the spindle from the last turn wound on the latter as far as the point of the spindle. This reserve must decrease as the cop is formed since the length of free spindle decreases. But this reserve must, for each amount to be wound on, have a normal value, that is, a clearly determined value; in other words, it must not be too great, because the yarn wound on would be come too loose and would form snarls, or too short because the yarn to be wound would break. This result isobtained by correcting the accidental variations in reserve by means of a regulator which makes the nut 12& rise on the screw 12a if the reserve is too small and makes the nut descend if the reserve is too great.

These variations in reserve produce variations'in position of the counter faller, but as hereinbefore stated, the counter faller is perfectly free after the backing-off operation. Now the reserve diminishes as the formation of the cop progresses; consequently, the counter faller which, when the reserve increases or decreases, varies the position ofthe quadrant screw must have its action on this screw controlled. For this purpose a system of cams 5m, 5n-5m is keyed on the shaft 5a of the winding faller; the cam 5m will make the quadrant nut rise when necessary and the cam 5n5m will make it descend when necessary.

A roller "('15 bears against the cam 5m. This roller is mounted on a lever 7p pivoted at 0 on an arm ('1' supported on the shaft 7a on the counter faller 7. The left end. of the lever 7 p isconnected to a rod 7 f connected by the lever 7 g, pivoted at 77s, to the brake band 7 h which surrounds a pulley 7m carried by the carriage-10.. The cam 5m comprises a profile portion 5m of constant radius and a portion 5p, pivoted at 0, of increasing radius in acounter-clockwise direction. r

The cam 51:. supportedon theshaftfia of the faller' 5 includes a portion a,.-b..ofits profile which increases in height from a to 'b; r

and a portion b -c which decreases from 6 to 0. The point a ofithis cam corresponds to the lowest position of the faller during the unwinding of the first spindle; the point 5 corresponds to the highest position of the faller during the unwinding of the last draw orstretch; the points betweena and b correspond to the different successive positions of the faller 5 during the formation of the. cop. Finally, the point 0 corresponds tothe invariable upper position of rest of the faller 5 during the running-out of the carriage. Against this cam 5n bears. a roller 74; carried by a cam 57% pivoted at 0 on. a member 8o freely mounted on the shaft 5a and emhracing the shaft of the counter-faller 7 withits notch 8w 2). The cam 5m has a profile portion hf of constant radius and. a-

portion f.g of decreasing radius from f to 9. Against the cam 5m bears a roller 7a mounted at one end of a lever 7 q pivoted at 0 on an arm 78 mounted on the shaft 7a of the counter faller 7 The left end of this lever is connected to a rod 8 connected'by the'lever 8g, pivoted at 81a, to the brake band 8h which surrounds a pulley 8m carried by the" carriage 10. V l v Further, the strands Qa'and 9b of an endless chain pass over the pulleys 7 m and 8m; this chain extends on the one hand over a loose pulley 9d on the back of the headstock 15a and also over a pulley 16m loose upon the shaft 16% but adapted to be made rigid with a pulley 90 by a well-known dog clutch placed under the control of a lever 11b, connected to a lever 11 upon which are arranged the stops 11a and 110. i V

At the lower part of the carriage 10 are also keyed stops and 10d; the stop 10d canpivot about 0 to the left from its position of rest but cannot swing to the right on ac count of the presence of the stop '13, keyed to the carriage. This pulley 90, by means of a chain 16;), controls the rotation of the screw 12a by means of bevel pinions. Moreover, the strand 9a of the chain carries. a stop 9 and the strand 9?), a stop 9h, these stops being situated one vertically below the other when the reserve is normal.

Let us now assume that the cop. is con1- menced and that the carriage runs out. The brakes mounted on the latter are open and. consequently, the pulleys 7 m and 8m run over the strands of the endless chain without driving them. The carriage reaches the front of the headstock; backing-off takes place, and the winding faller and counter faller come into contact with. the threads. In view of the fact that the first layer of yarn' is about to be wound on, the winding faller has descended to its lowest position.

After the backing-off, winding-on takes plaoe;the counter faller slightly risesin a counter-clockwise direction to come into. con:-

"tact with thethreads, and the arm; 71' also;

vrise of the rod 7 f.

The counter faller 7 guided by the thread continues to rise and this results in a new descent of the rod 7 f. Then the faller 5 slowly rises to re-wind the ascending roving of thread on the spindle. The faller 5 presents to the roller 7 t a smaller and smaller radius; the roller rises and causes the rod 7 f to descend. The up-and-down movements of the rod 7/ finally result in a slight descent of the rod 7 7 which permits the corresponding brake band to be inoperative on the pulley 7 m. V

As for the rod 8; and its brake, the, counter faller 7 slightly rises in the counter-clockwise direction as before, and this results in a slight descent of. the rod 8f. The faller 5 descends rapidly as in the preceding case and the cam 5m presents to the roller 7 0 a smaller and ascending'roving of thread.

smaller radius; then in its turn the cam 5m presents to the roller 7% an equally smaller and smaller radius. This results in a descent of the left end of the lever 7 g and a descent of the rod 8 The counter falter 7 guidedby the threads continues to risein a counter-clockwise direction and this results in a new descent of the rod 8;. Then the faller 5 rises to re-Wind the The roller 71) is in contact with a larger and larger radius of the cam 5%, which leads the roller 7% into contact with a greater and greater radius of the cam 572%. This results in a descent of the roller 7a and a rise of the left end of the lever 79 and a rise of the rod 87. These up-and-down movements of the rod 87 result in a descent of the rod 87, which descent is insufiicient to operate thebrake band'8h on the pulley 8m. If at this stage in the formation of the cop, the reserve has the value it should have, then during the run-in of the carriage, the winding faller and the counter faller gradually return to their original position and the brakes will not have acted. 1

Suppose that there is a diminution in length of the reserve 'at' this stage of the formation of the cop, that is, during the formation of the core or base of the cop. As already explained, the rises of the counter faller 7 produce a slight descent of the rod 7 f, and the descent and the rise of the taller 5 result, respectively, in a rise and descent of the rod 7f. But since there is a diminution of the reserve, the counter faller 7 again descends in a clockwise direction, and its descent results in a rise of the left end of the lever 7 p and a rise of the rod 7;. The rod 7f is then submitted to a slight descent'and a great rise, in consequence of which it acts on its brake band to stop the rotation of the pulley 7m, thus locking against rotation the pulley 7%, whereby therstrand 9a of the endless chain is driven towards the back of the headstock by the carriage, this drive continuing .as long as the reduction in reserve persists. v

The following takes place in the same conditions of diminution of reserve for the rod 8f and its corresponding brake band: as already explained, the rises of the counter faller 7 produce a descent of the rod 8f. The rise and the descent of the taller 5 effect in this rod 8/ movements in the opposite direction, the amplitudes of which neutralize each other. Finally, the rod 8; is lowered. I Since the reserve is reduced, the counter faller 7 again descends in a clockwise direction, which corresponds to the rise of the rod 8f. That is, the rod 8f is submitted to a rise and to a fall, the amplitudes of which neutralize each other or nearly so, and the corresponding brake is rendered. inoperative on direction corresponding to an upward movement of the nut 120. V

In this manner the number of turns of the spindles decreases during the following windmg-on operation andthe reserve returns to the value it must have at this stage in the formation of the cop. When the carriage returns, the stop 10d urges the stop 110 towards the back of the headstock so that 90 and 16% are declutched.

Suppose'there is an increase 'inlvalue of the reserve during the formation of the body of the cop. Since there-Winding is efiected in proportion as the faller '5 descends less and less low, the cams 5m and 5% will effect revolutions of smaller and smaller angular amplitude.- It is evident that only the portion 5on will be in contact with the roller 7%.

The normal rises of the counter faller 7 produce slight .desfcents of the rod 7f. Then when the faller 5 descends, as one'drawsor' 5m will he in contact with the roller 7 t.

of constant radius of the cam Gonsequently, the descent and the rise of the taller 5 leave the position ot the roller 7t unchanged. Since there is an increase in reserve, the counter taller 7 abnormally rises in a counter-clockwise direction, which accelerates the descent ot-the rod 7 f andrenders its corresponding brake inoperative on the pulley 7m. V

The ascents ot the counter taller 7 produce a descent ot'the rod 8f, andas the roller 7% is in contact with the profile f'-/t, its pcsition will remain invariable. When the increase in reserve is effected, the counter taller 7 will rise abnormally and increase the descent of the rod 8;, while the brake 8h prevents rotation ot the pulley 8m.

Further, when dealing with very fine counts, the stop 110 is brought nearer to the the portion 5m stop 11a in order to reduce "the action of the V cams on the quadrant screw; the contrary is efl'ected in the case ot coarsecounts.

I claim:

1. In a self-acting mule composed of a carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads may be wound, means tor producing by the displacement of the carriage the rotation ot the spindles when the said carriage is displaced in the direction of the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted-on a fixed part of the mule, ascrew moving along an arm of said sectorand acting, during its displacement on the means for rotating the spindles, to vary the speed of the latter, means for registering the variations of the length of reserve, a clutch device acting between the means for registering the variations on the length of reserve and the screw ot the sector,

and means tor determining the comm'encement of the action of the said clutch device in order to realize a partial transformation of the registered displacements in'accordance with the fineness ot the thread.

2. In a self-acting mule composed of a carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads maybe wound, means for producing by the displacement of the carriage the rotation of the spindles when the said carriage is displaced in the direction of the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a fixed part of the mule, a screw moving along an arm of said sector and acting, during its displacement on'the 511183118 for rotating the spindles, to vary the speed of the means for registering the variations a clutch device acttor registering the latter, of thelength of reserve, ing between the means variations of the length of reserve and the run relative to a fixed part of themule, spin dles mounted on the carriage and on which threads may be wound,'means for producing by the displacement of the carriage the rotation of the spindles When the said carriageis. displaced in the direction ot the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a I fixed part otthe mule, a screw moving along an arm of said sector and acting, during its displacement on the means for rotating the spindles, to vary: the speed of the'latter, two

pulleys mounted on fixed parts .ot the mule,

an endless chain each runot which is supported by one of the said pulleys, means for displacing each belt in accordance with the displacement of the carriage, and means for connecting one of the two said pulleys tothe screw ot the. sector in order to change the rotation of the said pulley into displacement otthe said screw. 7

4. In a self-acting mule composed ota carriage havingan outward run and an inward run relative to a fixedpart ot the mule, spindles mounted on the carriage and on Which threads may bewound, means tor producing by the displacement of the carriage the rotation of the spindles when the said carriage is-displaced in the direction ot the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the. threads during the said inward run, a sector pivoted on-a fixed part of the mule, a screw moving along an arm of said sector and acting, during its displacement on the means tor rotating the spindles, to vary the speed of the latter, two pulleys loosely mounted on fixed parts of the mule, an endless chain each run otwhich is run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads maybe wound, means torproducing by the displacement of the carriage the rotation of the spindles when the said carriage is displaced in the direction of the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a fixed part of the mule, a screw moving along an arm of sa1d sector and actlng, during its displacement on the means for rotating the spindles, to vary the speed of the latter, two

pulleys loosely mounted on fixed parts of the -mule, an endless chain each run of which is supported by one of the said pulleys, the pulleys being put in rotation by each of the said belts, a lever connected at one ot its ends to a brake acting on one of the pulleys, the

other end of the lever being displaced in accordance with the variations of reserve in a determmed direction, means for rendering the displacements ot the said lever proportional to-the position of the counter taller, and

means tor rendering. these displacements subordinate to the position of the taller in order to produce a progressive decrease of the re serve during the formation of the bobbin,

6. In a selt-acting mule composed of a carriage having an outward run and aninward run relative to a'fixed part of the mule, spindles mounted on the carriage and on 'which threads may be wound, means tor producing by the displacement of the carriage the rotation of the spindles when the said carriage is displaced in the direction ot the inward run, a taller for guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on afixed part ot the mule, a screw moving each of the said belts, a lever connected at one of its ends to a brake acting on one of the pulleys, the other end of the lever being displaced in accordance with the variations of reserve 111 a determined direction, an arm integral with the axis of the counter taller and connected with the said lever, and means for rendering these displacements subordinate to the position of the taller in order to produce a progressive decrease of the reserve during the formation of the bobbin.

7 In a selt acting mule composed of a: carriage having an outward run and an inward run relative to a fixed part of the mule,'spindles mounted on the carriage and on which threads maybe wound, means for producing by the displacement of the carriage the rotationot the spindles when the said carriage during the said inward run, a sector pivoted on a fixed part of the mule, a screw mevingalongan arm of saidrsector and acting, during its displacement on the means for rotating the spindles, .to vary the speed of the latter, two pulleys loosely mounted on fixed parts ot the mule, an endless chain each run of which is supported by one of the said pulleys, the pulleys being put inrotation by each of the said belts, means tor brakingthe rotation of one or the other of these pulleys I in function of the variation ot'the length ot reserve, means for changing the registered variations into displacements ot-the screw ot the sector, and twodistmct connections between the taller and the counter taller acting during'variations ot the length of reserve respectively .on ea'ch of said pulleys.

- 8. In a self-acting mulecomposed ot a carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads may be wound, means for producing by the displacement of the carriage the rotation of the spindles when the said carriage is displaced in the direction of the inward run, a taller for guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted parts of the mule, an endless chain each run of which is supported by one ot the said pulleys, the pulleys being put in rotation by each of the said belts, means for braking the rotation of one or the other of these pulleys in function of the variation of the length of J reserve, a system of cams belonging to each of the saidconnections and displaced in tunetion ot'the variations of the taller and the counter taller, a pivoting lever around an arm fixed to the counter taller and leaning at one of its ends on the said system of cams and in connection at'the'other end with the means for registering the variations of length of reserve, and means tor changing the registered variations into screw ot the sector. 7

9. In a selt-acting mule composed ot a carriage having an outward run and an inward run relative to a fixed threads may be wound, means tor producing by'thedisplacement ot the carriage the rotation otthe spindleswhen the said carriage is displaced in thedirection ot the inward run, a taller tor guiding the th'reads on to on a fixed part of the mule, a screw moving 111/ displacements of the 1i part of the mule, spin- :dles mounted on the carriage and on which the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a fixed part ot the mule, a screw moving along an arm of said sector and acting, during its displacement on the means tor rotating the spindles, to vary the speed of the latter, two pulleys loosely mounted on fixed parts of the mule, an endless chain each run of which is supported by one of the said pulleys, the pulleys being put in rotation by each of the said belts, means tor braking the rotation of one or the other ot these pulleys in function ot the variation of the length ot reserve, a system of cams belonging to each of the said connections and displaced in function ot the variations of the taller and the counter taller, a pivoting lever around an arm fixed to the counter taller and leaning at one ot its ends on the said system'ot cams and in connection at the other end with the means for registering the variations of length of reserve, means for changing the registered variations into displacements ot the screw ot the sector, and means tor rendering the system ot cams adjustable;

10. In a selt-acting mule composed ot carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads may be wound, means for producing by the displacement ot the carriage the rotation ot the spindles when the said carriage is displaced in the direction'ot the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a'fixed part ot the mule, a screw moving along an arm of said sector and acting, during its displacement on the means for rotating the spindles, to vary the speed of the latter, two pulleysloosely mounted on fixed parts of the mule, an endlesschain each run ot which is supported by one of the said pulleys, the pulleys being put in rotation by each ot the said belts, means for braking the rotation 0t one or the other of these pulleys in function ot the variation of the length 0t reserve, means tor changing the registered variations into displacements of the screw ot the sector, a connection adapted to correct the decreases ot the length of reserve and acting in two stages, one variable stage corresponding to the formation of the lower conical part of the bobbin, and the other stage corresponding to the formation of the cylindrical part of the bobbin, and means for realizing this variable action.

11. In a self-acting mule composed ot a carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads may be wound, means tor producing by the displacement of the car-' riage the rotation of the spindles when the said carriage is displaced inthe direction of the inward run, a taller tor guiding the threads on to the spindles during the inward run, a counter taller tending to tension the threads during the said inward run, a sector pivoted on a fixed part of the mule, a screw moving along an arm ot said sector and acting during its displacement on the means-tor rotating the spindles, to vary the speed of he latter, two pulleys loosely mounted on fixed parts ot the mule, an'endless chain each run of which is supported by one of the said pulleys, the pulleys being put in rotationby each of the said belts, means tor braking the rotation of one or the other of these pulleys in tunction ot the variation of the length of reserve, means tor changing the registered variations into displacements of the screw ot the sector, a connection adapted to correct the decreases ot the length 0t reserve and acting in two stages, one variable stage corresponding to the tormation otthe lower conical part ot the bobbin, and the other stage corresponding to the formation of the cylindrical part ot thebobbin, and a cam comprising two parts of ditferentprofiles, one of I these profiles being variable tor the formation ot the conical part and theother profile being constant tor the formation ot the cylindrical part. a

12. In a selt-acting mule composed ot a carriage having an outward run and an inward run relative to a fixed part of the mule,

spindles mounted on the carriage and on which threads may be wound, means tor pro ducing by the displacement of the carriage the rotation of the spindles when the said carriage is displacedlin the direction'ot the inward run, a taller tor guiding the threads on to the spindles during the inward run, a

counter taller'tending to tension the threads I during the said inwardrun, a sector pivoted on a fixed part of the mule, a screw moving along an arm ot said sector and acting, during its displacement on the means for rotating the spindles, to vary the speed of the latter, two pulleys loosely mounted on fixed parts ot the mule, an endless chain each run of which is supported by one of leys, the pulleys being put in rotation byeach ot the said belts, means tor braking the rotation 0t one or the other of these pulleys in function of the variation of the length of re serve, a connection adapted to correct the increases ot reserve and acting in two stages, onestage during which the means tor registering the variations 0t thelength 0t reserve is inoperative, the said stage corresponding to the displacement ot the taller in the inthe said pulcarriage is displaced in the direction of the inward run, a faller for guiding the threads on to the spindles during the inward run, a counter faller tending to tension the threads during the said inward run, a sector pivoted v on a fixed part of the mule, a screw moving I the displacement along an arm of said sector and acting, during its displacement on the means for rotating therspindles, to vary the speed of the latter, two pulleys loosely mounted on fixed parts of the mule, an-endless chain each run of which is supported by-one of the said pulleys, the pulleys being put in rotation by each of the said belts, means for braking the rotation of one or the other of these pulleys in function of the variation of the length of reserve, a cam integral with the axis of the faller andhaving two eccentricities of inverse direction, one eccentricity act: ing during the displa'cement of the faller in the interval between its upper invariable position of rest and its upper position of work, the other eccentricity acting during of the faller corresponding to the formation of the bobbin, and means for changing the registered variations into displacements of the screw of the sector.

14:. In a self-acting mule composed of a carriage having an outward run and an inward run relative to a fixed part of the mule, spindles mounted on the carriage and on which threads may be wound, means for producing by the displacement of the carriage the rotation of the spindles when the said carriage is displaced in the direction of the inward run, a faller for guiding'the threads on to the spindles during the inward run, a

counter faller tending to tension the threads during the said inward run, a sector pivoted on a fixed part ofthe mule, a screw moving along an arm of said sector and acting, during its displacement on the means for rotating the spindles, to vary the speed of the latter, two pulleys loosely mounted on fixed parts of the mule, an endless chain each run of which is supported by one of the said pulleys, the pulleys being put in rotation by each of the said belts, means for braking the rotation of one or the other of these pulleys in function of the variation of the length of I reserve, means for changing the registered variations into displacements of the screw of the sector, two distinct cams, one of which is fixed on the axis of the faller, the other pivoting around a fixed point and leaning on the first cam, and a roller in relation with one of the extremities of a lever connected with a brake acting on one of the pulleys and leaning againstthe second cam.

15. In a self-acting mule composed of a vcarriage having an outward run and an inmoving along an arm of said sector and act-' ing, during its displacement on the means for rotating the spindles, tovary thespeed of the latter,two pulleys loosely mounted on fixed parts of the mule, an endless chain each run of which is supported by one of the said pulleys, the pulleys being put in rotation by each of the said belts, means for braking the rotation of one or the other of these pulleys in function of the variation of the length of reserve, means for changingthe registered variations into dlsplacements of the screw of the sector, two d stinct cams, one of whlch is fixed on the axis'of the taller, the other pivoting around a fixed point and leaning on the first cam, a roller in relation with one of the extremities of a lever connected with a brake acting on one of the pulleys and leaning, on the second cam, and a member in which is freely engaged the axis of the faller and which surrounds the-axis of the counter faller in order to prevent the swin ing of the said member, this said member bearing the said fixed point.

In testimony whereof I have alfixed my signature.

JOSEPH DETHIER.

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