US1267099A - Method for winding silk on spools and machine for carrying out this method. - Google Patents

Description

C. MA'ZZUCCHELLI. METHOD FOR WINDING SlLK ON SPOOL'S AND MACHINE FOR CARRYING OUT THIS METHOD. APPLICATION FILED DEC. 5. 1913.

1,267,099. Patented May 21', 1918.

2 SHEETSSHEET 1.

C, NIAZZUCCHELLI.

METHOD FOR WINDING SIIK 0N SPOOLS AND MACHINE FOR CARRYING OUT THIS METHOD.

APPLICATION FILED DEC. 15. 19I3.

Patented May 21, I918.

2 SHEETS-SHEETZ.

i ifneww UNTTED PATENT @FFTQE CELESTINO IVEAZZUCCI-TELLI, F C0310, ITALY.

METHOD FOR WINDING SILK 01\T SPOOIS AND MACHINE FOR. CARRYING OUT THIS METHOD.

Application filed December 15, 1913.

To all whom it may concern Be it known that I, OELESTINO MAZZUC- oHnLLI, a subject of the King of Italy, residing at Como, Via Briantea 1, Italy, have invented new and useful Improvements in Methods for Winding Silk on Spools and Machines for Carrying Out These Methods;

' and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of references marked thereon, which form a part of this specification.

This invention relates to an improved method for winding silk on spools and to amachine for carrying out this method.

In the hitherto known winding machines there are to be found two diiferent methods for rotating the spools. According to one of these methods the spool is fixed upon an iron spindle and it is carried together with this spindle by a bifurcated support. The support, or the spool, is then pressed against a rotatin pulley, so that the spool is rotated by the fraction produced with a uniform pe ripheral velocity, which corresponds to that of the pulley.

According to the second known method the spool is pushed. onto a spindle having at one end a head with a diameter of 13 -12 inches; this head is brought in contact with a small pulley, whose width corresponds to that of'the spindle head. The friction produced causes a rotation of the spindle and therefore also of the spool. According to this method the peripheral velocity of the spool increases gradually with the increasing diameter of said spool, while the silk is wound upon the latter.

, Both these known methods have, however, the following drawbacks: The angular velocity of the reel does notremain absolutely the same. If, for instance, the thread is not loosened in the proper manner from the strand, the spool, or the spindle head slips on the pulley and the reel is brought to a standstill till the increased pull loosens the Specification of Letters Patent.

Patented May 21, 1918.

Serial No. 805,816.

thread, whereupon the reel is again rapidly rotated. Since the reel has, however, a much greater diameter than the spool its gyrating mass imparts to this reel suddenly a greater velocity. During this period the thread is wound on the spool in a slack manner. Hereupon the angular velocity of the reel decreases gradually till it corresponds again to that of the spool. During this period the thread is wound up in a tight manner.

These periods change continually in an irregular manner, so that the thread is wound up sometimes in a slack and sometimes in a tight manner.

According to the method of the present invention the thread leaving the reel is not fed directly to the spool. but passes at first around a large drum, acting as a guide for the thread and serving at the same time for driving the spool. After the thread has been passed once around said thread-guiding drum it is wound in a known manner on the spool; the hereinbefore mentioned drawback being thereby entirely eliminated.

The invention relates further to brakemeans for the reel provided on a machine for carrying out this improved method, to means for carrying the thread once around the drum while this machine is stationary. and to means for stopping the machine as soon as the thread breaks or as soon as a spool is wound up.

A convenient mode of carrying the invention into effect is shown by way of example in the accompanying drawings in which:

Figure 1 shows a front elevation of the winding machine, there being omitted several parts on the left hand side of the machine for the sake of clearness;

Fig. 2 shows a plan sectional view on the line AA of Fig. 1, some further parts being omitted for the sake of clearness;

Fig. 3 shows on an enlarged scale a front elevation of a part of the machine;

Fig. A shows a detail,

Figs. 5 and 6 show in a further detail and Fig. 7 shows-a modification of a detail.

front and plan view In the illustrated machine 1 denotes the reel from which the silk thread 2 is reeled off. The thread drawn off the reel passes then over a thread-guide 3, and if one wishes to clean at the same time the silk, saidlthread I is also passed through a cleaning appliance 1. Hereupon the thread 2 is passed directly onto a large feed drum 5. '6 denotesthe spool, the spindle of which is supported in a bifurcated'lever 7 pivotally connected to a frame part 8. The lower end of this ilever 7 carries a weight which has the tend- .euoy to rotate ,the lever 7 in a counterclockwise direction, tl uspressing thespool 6 agalnst the drum 5, so that snfhcient adhesion is imparted to the thread to remain in contactv with said drum 5. The thread .passes, while an equal tension is exerted upon it once around sa d. drum and it'then crosses the :thread ,reeledofi'the reel 1 .to be fed over a thread guide 9 mounted on ,the small pivotally arranged lever 10 and the :thread guide 111, fixed :to the reciprocating .this drumthe tensionsinthekthread are com- ,pletely equalized.

The thread guides and 9 .are disposed in such a manner that the .threads 'do-not touch one another at the crossing point.

This arrangement permits very thin silk threads to be-reeled off and wound up with lnuch greater velocities than heretofore.

For eachthread guide drum 5,th erevis provideda rope drive 13;transi nitting.thedrive from the Inaindrh'ing shaft l-l to a pulley 5 .mounted on the same shaft as said drum. Adjacent to each -pulley5 there is provided a brake disk 5 The drums 5 arecarried by bifurcated levers 15 pivotally connected atf16. to tl1e=machine frame 17. To these levers 15;are pivotally connected the bell crank levers 1.8, which :effect in their difierent positions a stoppage-or running of the machine. The lower end of; each bell cranklever 18 rests on thetaloutment 19 of the machine frame. If

the :lever 18 {isin the position shown. in Fig. 3 the ropednive 13 is tensioned and the thread guiding drum and driving pulley 5 is rotated.

In order to stop the machine when the thread isbroken orto pass the thread around the pulley 5 the hfitl'ldlGrOf :the locking :lever 18 is moved in the .direction of the arrow B shown in Fig. 3, the lower end of this lever being then lifted. Owing to the action of its own Weight the drum 5 the brake disk 5 is now pressed against thebrake shoe 20 pivotally attached at 37 to the machine frame. This causes a slackening of the rope drive 13 and the drum 5 is therefore brought .to a standstill.

On the supporting lever '7 carrying the spool Gthere is provided a nose 2-1=-( Fig. 3)

and on a bracket-like part of the machine frame 17 is pivotally attached a lever 22. F or the purpose of changing the spool:6 -.or of knottinga broken thread the lever 7 is rotated in the direction of the arrow C shown in Fig. 3 till said,.nose 21engages the catch lever 22-.

' In or e to .put .the thread gi d ng dru .5 again in ,m'otionthe lever 15 is niove d in .the direction of the arrow B shownln ,E g. till the lower endofthelever 18 rests 011113116 abutment 19, tl1e.rope.. drive .13 being then tightenedassoon as the parts areiagain in the position shown i111? Fig. .4 illustrates a. partofthe r m ofthe thread-guiding drum in .its natural size. As shown in this figure there,ispivotallypon- .nectedto .the .innerfrim, 1: arta lever ,or. catch 23 provided witha bolt24 projecting in a hole 25 of saiddrum 5. Tl1e;lever 23 isacted ,upon-by a flat spring 26 normally preventing said bolt 24 from projecting beyondthe circumferenceof the drum .5.

.For the purpose of gu dmg thethread 2 around therdrum .5 attire-beginning of the winding operation and when the machine ;is still stopped, the .lever 23 is pressed .by hand against the action .of the spr ng ;.26 ,toward the rim, so:that.thebolt2eis broughtto proect beyond the circumference 'of. the .dr nn 5. The thread,reelechoffthe reel 1 and-pass ing overthe guide 3 and between the cleaner 4: is wound several times around the-bolt 24.

ward in;th edirection of;the arrow-D shown in Fig. ,3,:soythatiteomes out-.of-engagc- 'ment with the ;nose and ;tl1e;supporting ;lever ,7 carrying the spool 6 s again 7: pressed against the drum 5 inejorder to rotatesaid spoolfi.

I shall now describe the means ,for stopping .the machine .as soon-as the 'thread2 breaks- ,T0 :the shorter l e d. f .th her efore mentioned oscillating lever '10 there 31S attachedaa vertical rod 27 guided-atjts. lower end in. arsupport 2S carried 1by;.the 1nach1ne Illl'fllllfllY. 0n theloWer end of;the-;ro d;27

there is provided a stopor collar 29. To a sleeve like projection provided on the lower end of the lever 18 there is pivotally attached at a short lever 31 resting on an eccentric disk 32. The axis 33 on which are mounted the eccentric disks 32 receive its drive from the main driving shaft 1 1 by means of a rope drive 34:.

As soon as a thread is broken, the thread guide 9, normally held down by the thread tension, is raised by the vertical rod 27 which drops; the collar 29 provided on this rod is therefore lowered and owing to the action of the spring 36 upon said rod it is moved beneath the stop of the support 28. The continually rotating eccentric disk 32 causes a continual up and down movement of the short lever 31. As soon, however, as the rod 27 has been lowered the right hand end of said lever 31 strikes against the lower end of the rod 27, so that said end of the lever is prevented from further moving and the opposite end with its pivot 30 will now be raised. This brings the lower end of the bell crank lever 18 out of engagement with the stopping traverse 19 and the weight of the drum 5 causes the latter to swing in an anticlockwise direction, so that its brake disk 5* is brought in contact with the brake shoe 2O oscillating around the pivot 37. A further rotation of the drum 5 is then prevented.

To the other end of the brake shoe 20 there is connected a vertical rod 38, which is bifurcated at its upper end and reaches normally nearly up to the grooved hub 42 of the reel 1 without, however, touching said hub 12. The axis 39 of the reel 1 (Figs. 5 and 6) is supported at both ends (in the figures there is shown only one end of this axis) by rollers 40 carried by a frame 41. This secures a very easy running of the axis 39 of the reel 1, the resistance produced being very small. When the brake disk 5 provided on the same axis as the drum 5 touches the brake shoe 20, the vertical rod 38 is raised, so that the reel 1 is also raised and prevented from turning owing to brake action exerted by said rod 38 upon the hub 42. Owing to the fact that a brake action is exerted upon the reel 1 as soon as the thread is broken, this broken thread cannot entangle when the reel is further rotated; on the contrary said broken thread can easily be found.

1 shall now further describe how the ma chine is stopped when the spool 6 has been wound up. a. I. when the spool 6 has the desired thickness. As the diameter of the spool 6 increases, the supporting lever 7 is moved in the direction of the arrow C shown in Fig. 3, so that the lower end of this lever is raised. When sulficient thread has been wound upon the spool 6 the lower end of said lever 7 strikes against the pin 13 (Fig.

'3) provided on the lower end of the bell crank lever 18. The latter is therefore brought out of engagement with the abutunderstood that there are provided on eachmachine several groups of such reels and drums, as shown in Fig. 2, actuated from a common driving shaft let but working for the rest independently one from another.

Fig. 7 shows a modification of the means for carrying the thread 2 once around the drum 5 when the machine is stopped. According to this modification the bolt or pin 24 around which the thread has to be wound is acted upon by a flat spring 44 guided by means of pins 4:5 screwed into the rim of the drum 5. If the thread has to be wound around the pin 24 at the beginning of the reeling operation, the spring 4a is pressed against the rim of the drum 5 to be released as soon as said operation is performed.

What I claim is 1. A thread winding machine comprising a thread feeding drum, and a thread holding device on the drum for drawing the thread around the latter at the beginning of the unreeling operation.

2. In a thread winding machine, a feeding drum, a thread holding member thereon comprising a bolt arranged to be projected through the periphery of the drum, and a spring for normally holding the bolt retracted.

3. In a thread winding machine, a feeding drum, a thread holding device comprising a lever pivoted on the inner periphery of the drum, a bolt on the lever adapted to be projected through the periphery and a spring acting on the lever to withdraw said bolt.

4. In a thread winding mechanism the combination with a thread supporting reel, of a thread feed drum around which the thread is once passed, a pivoted lever supporting the drum, means to guide the thread onto and ed of the drum, a drive for said drum drawing the thread from the reel, a winding-on spool arranged to receive the thread from the drum, means to yieldingly hold the spool in contact with the drum to rotate said spool, athread guide reciprocating in a direction parallel to the axes of said drum and guide, and means actuated by said spool holding means to permit the drum to move out of driving contact with said spool when the latter is full.

5. The method of winding silk fiber .-.mm ol-thh patent may be obtain to:

which comprises directing the fiber from the supply reel downward toadriving drum capable of swinging out of operative position and simultaneously bending the fiber toward e vertical, said fiber passing around said drum and crossing the downwardly directed portion, thereafter directing the,

fiber to a spool frictionally driven by the contact of said drum with the fiber wound 10 upon the spool, the fiber being fed to the spool substantially at the nip between the drum andspool.

In testimony that I claim the foregoing as my invention, I have signed my name in Witnesses "HANS IERNY. LYLE RoBB.

he cents each, :addreningthe commissioner pt Patents, Washington, D. G. v

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