US2819580A - Method and apparatus for changing bobbins - Google Patents

Description

Jan. 14, 1958 R. H. TEUPEL METHOD AND APPARATUS FOR CHANGING BOBBINS 2 Sheets-Sheet 1 Filed Feb. 4, 1955 Jan. 14, 1958 R. H. TEUPEL 2,819,580

METHOD AND APPARATUS FOR CHANGING BOBBINS Filed Feb. 4, 1955 2 Sheets-Sheet 2 FIG 5 United States Patent METHOD AND APPARATUS FOR CHANGING BOBBINS Rudolf H. Teupel, Bremen, Germany, assignor to Spmnbau G. m. b. H., Bremen-Farge, Germany Application February 4, 1955, Serial No. 486,169 Claims priority, application Germany February 8, 1954 24 Claims. (Cl. 57-52) The present invention relates to textile machines and, more particularly, to a method of and device for changing bobbins on fiyer frames and spinning machines, especially fiyer spinning machines for hard fibers such as best, hemp, flax, jute, and the like.

Spinning machines which are employed primarily for spinning coarse yarn and with which the spinning period from cop change to cop change is relatively short, are, in order to cut down the standstill time inherent to the cop change, provided with a second bobbin rail by means of which it is possible to dofi the full bobbins of a bobbin rail and to exchange said full bobbins for empty bobbins, while the bobbins of the second bobbin rail are being spun upon.

With the known spinning machines, the exchange of the bobbin rails is effected manually by means of hand wheels which operation requires not only considerable force on the part of the spinning operators but also requires their careful attention in addition to causing a considerable loss in time.

It is, therefore, an object of the present invention to provide a method of and device for changing bobbins which will pvercome the above mentioned drawbacks.

It is another object of this invention to provide textile machines of the above mentioned type with a bobbin change arrangement which will reduce the time heretofore required for changing bobbins.

It is still another object of this invention to provide textile machines of the above mentioned type with a bobbin change arrangement which will effect a bobbin change automatically after the bobbins are filled with the desired cops.

These and other objects and advantages of the invention will appearrnore clearly from the following specification in connection with the accompanying drawings in which:

Fig. 1 is a diagrammatic representation of a bobbin change arrangement according to the invention applied to a fiyer spinning machine with helical gear transmission for the flyers and for lifting and lowering the bobbin rail carriers, Fig. 1 representing a front view of a part of a fiyer spinning machine equipped with the arrangement according to the invention.

Fig. 2 is a side view of the bobbin rail change arrangement, one bobbin rail being shown in spinning position and another being shown in reserve position.

Fig. 3 illustrates a phase of the bobbin rail change operation, the bobbin rail carrier occupying its lowest position.

Fig. 4 illustrates the position of the bobbin rail carrier during the commencement of a new cop.

Fig. 5 is a diagrammatic illustration of the bobbin change arrangement during the movement of the bobbin rail into reserve position.

General arrangement formation of the cops on the bobbins.

bobbin change is automatically effected in conformity with the upward and downward movement of the bobbin rail carrier. Advantageously this is effected in such a manner that after the bobbins are filled, the spinning members are switched off whereas the drive for the up ward and downward movenzent of the bobbin rail carrier continues preferably with increased speed up to the completed bobbin rail change and subsequently is switched off.

One embodiment of the invention is characterized by bobbin rail carriers which cooperate with dofiing rails or slides. The arrangement is such that after the bobbins have been filled, the downward movement of the bobbin rail carrier, in other words the downward stroke of the bobbin rail carrier is. extended by making the normally effective abutments for the downward stroke of the bobbin rail carrier ineffective so that the bobbin. rails mounted on the bobbin rail carrier and carrying full bobbins can be deposited on dofling rails where they are exchanged for empty bobbins mounted on reserve bobbin rails which are likewise arranged on the doifing rails. This exchange and the moving of the empty bobbins into operative position is preferably effected by means of a rocker, swing lever or the like adapted to be actuated by the bobbin rail carrier.

Structural arrangement Referring now to the drawings in detail, which by way of example show a bobbin change arrangement according to the invention in connection with a jute fiyer spinning machine, the drive of the flyers as well as the up and downward movement of the bobbin rail carrier is effected through helical gears. Of course, the bobbin rail arrangement according to the invention may also be employed on a spinning machine or fly frame in which the flyers are driven through the intervention of belts and/ or the up and downward movement of the bobbin rail carriers is effected through the intervention of chains, shafts, lever systems or the like. The arrangement according to the invention may also be employed where the winding of the yarn or roving or sliver is effected by another spinning element than fiyers as for instance by a hell or the like.

In the machine shown in Fig. 1, the main motor 1 drives the shaft 3 through the intervention of a centrifugal clutch 2. This shaft 3 has mounted thereon a shiftable clutch 6 by means of which are driven the shaft 3 and further the fiyer drive shaft 10, the flyers 9 and the drafting frame, for the sake of clarity only the delivery rollers 11 and the feeding rollers 12 of the drafting frame being shown. Interposed between the shaft 3' and the shaft 10 in a manner known per se are a speed change gear transmission 8, a reversing change gear transmission 8 and a draft wheel change transmission 8". From the feeding roller 12 or the transmission 8 therefor, the drive is further conveyed to the reversing gear transmission 17 through the intervention of the lifter change gear transmission 8", the shafts 13 and 13, which are interconnected through a free wheel drive or a clutch 14, as well as through the intervention of the vertical shafts 15 and 16. The gear'transmission 17 controls the lifting and lowering movement of the bobbin rail. The bevel gear 18 of the reversing gear transmission 17 is fixedly connected to the hollow shaft 16 which latter is carried along or driven by the shaft 15 and is connected thereto in such a manner that while it is being rotated by the shaft 15 it is adapted in a telescopic manner to slide in axial direction on shaft 15 during the up and downward movement of the bobbin rail.

An adjustable abutment 20 limits the upward stroke of the bobbin rail, whereas an adjustable abutment 21 limits the normal downward stroke of the bobbin rail during the When the gear & 1 8158.0

3 box 17' hits the abutments'ZU, 21, respectively, the bevel gear 19 or the bevel gear 19 is brought-into engagement with the intermediate bevel gear 18 whereby the bobbin rail lifter shaft 19 is rotated in one or the other direction to thereby bring about a lifting or lowering respectively of the bobbin rail carrier 25.

'VVhen the bobbins 27 are sufliciently filled with yarn, with the heretofore knownspinning machines having two bobbin rails, the motor is switched off, and the filled bobbins are exchanged for empty bobbins by hand in a rather cumbersome manner. In contrast thereto with the bobbin change arrangement according to the invention, the lever 23 is either manually or automatically, for instance through the intervention of a timer or a sensing device forthe'bobbin diameter, or the like, tilted in the direction of the arrows a, a so that the flyers 9 and the drafting frame 11., 12 are stopped and the drive for the lifting and lowering movement only is continued.

With the embodiment shown in the drawing, the ,main motor 1 will then ,drive the reversing gear transmission 17 through the intervention of the shaft 3, the clutch members 6 and 6", the gears 4, f and the shafts 13, .14 and 15. The gears 4 and 5 are so dimensioned that at a constant speed of the motor, the transmission ratio between shaft 3 and shaft ,13 is preferably two to ten times greater than the transmissionratio during the spinning operation. As a result thereof also the lifter shaft 19" rotates at a higher speed so that the time for the bobbin rail change will be considerably reduced. A free wheel clutch 14 arranged between the shafts 13 and 13' will maintain the gear train ending'w'ith the shaft 13 in switched off position.

The main motor 1 may also be designed as pole-changeable motor which simultaneously with the "tilting of the lever 23 is switched to a higher speed for speeding up the lifting and lowering movement of the bobbin rail carrier.

According to anotherembodiment of the invention,'the main motor 1 may together with the tilting movement of the lever 23 be switched off while simultaneously an auxiliary motor 45 shown in Fig. 1 by dash lines is switched on and through the intervention of .gears 46 and 47 drives the shaft 13. Also in this instance the transmission ratio of the gears is so selected that the shaft 13 will rotate "at a speed higher than its speed during the spinning operation. When employing an auxiliary motor 45, the clutch 6, the cone brake '7' and the gears 4 and 5-would be superfluous.

The disconnecting shifting operation of the shifting lever 23 will with the spinning machine shown in the drawing and comprising the main motor 1 and clutch 6, bring about the following results:

When the lever 23 is tilted in the direction of the arrows at, a (Fig. 1) after the bobbins 'havebeen filled, the clutch member 6 rotating together with the shaft 3 but slidable thereon is disconnected from the clutch member 6 and is connected with the clutch member 6". As a result thereof, the clutch member 6" will together with the gear 4 connected thereto rotate with the same speed as shaft 3. Simultaneously with the clutch member 6, also the cone brake member 7 slidable on .shaft 3 but rotatably connected thereto is moved in the direction of the arrow a so as to be -,p1tcssed against the -stationary member 7', thereby braking the shaftfi' in order to prevent the flyers 9and the rollers -11, .12 of the drafting frame from continuing running :for some time by inertia.

Simultaneously with the disconnection of the clutch 6, the abutment v21 is moved out of its normal position by means of the lever 23 so that the gear abox 17 during the downward movement thereof can rpass Eby said abutment .21, and the reversing of the difter gear transmission 18, 19, 19 will be effected only when the gear box 17 hits the abutment 22 insteadofiliitting lthe abutment 21 during the normal spinning operation.

During the downward movement of the bobbin rail up to the abutment'22belowthe abutrnent"21,thebobbin rail 26 (Fig. 2) which carries full bobbins 27 is deposited or doifed upon the sliding rail 28 in front of the reserve rail 26' carrying empty bobbins 27. When the bobbin rail carrier moves further downwardly, it engages the pivot 29 of the arm 29 of the rocker 30' tiltable about the shaft 30 and presses said pivot 29 downwardly. Simultaneously therewith, :the :other pivot 31 carried by the arm 31 of the rocker 30' engages and .moves the empty bobbin rail 26 and thus the full bobbin .rail 26 toward the front (toward the left with regard to the drawings) and does this tosnch anextentithat the reserve rail 26' will finally be vertically below the flyers} This end position is clearly shown in Fig. 3. At this instant, the bobbin rail carrier 12.5 and thus .also the reversing transmission 17 have reached their lowest position at which the gear box 17' engages the abutment 22 and now in .a manner .known per .se reverses the transmission 17 so that the bobbin rail .carrier .25 moves again upwardly between the sliding rails 28. During thenpward movement of the :rail carrier 25, the rocker 30 is .by means of a spring 32 again returned to its original position.

The reversing gear transmission 17 and the bobbin rail carrier 25 move upwardly to such an extent that the electric switch button 24 is pressed and consequently the main motor 1 .or, when employing an auxiliary motor 45, .the auxiliary motor is stopped. The switch button24 is soarranged that it canbecome effective'only after 'the transmission 17 and thus the'bobbin rail carrier '25 have been returned to a point adjacent to and below the abutment 21, in other words only after the bobbin rails 26 have been exchanged for the bobbin rails 26.

In this position, the thread 33 runs from the fiyer 9 to the full bobbin 27 moved into their doffing position and has still no connection with the empty bobbins '27 (Fig. 3) which have been moved from their reserve position into spinning position. In order to establish this connection, the drive motor 1 is switched on fora short time so that the threads 33 coming from the flyers '9 will loop around the empty bobbins27 (Fig. 4). This short switching on may be effected manually by pulling back the lever 23, or it may be effected automatically by the switch 24 in such a manner that the ,actuation of the switch 24 does not switch ofi the motor 1 or .the motor 45 but first tilts the lever 23 in a direction opposite to the arrow a whereby the clutch member 6 is connected with the clutch member 6 and only thereafter, in other words with a delayed action, the main motor 1 or auxiliary motor-45 is switched off.

The thread 33 which runs from the empty bobbin .27 to thefull bobbin '27 is then in a manner known per se severed by a knife, whereupon .the spinning machine can be switched on for the spinning operation proper.

During the spinning operation proper, the full bobbins 27 (Figs. 3 .and 4') arranged at the front (with regard to the drawings on the .left side) are exchanged for empty bobbins (Fig. 5 As soon as .this exchange has been completed, the empty bobbin rail 26 is moved on the sliding rails .28 toward the back of the machine into 'ireserve position (Figs. 2 and 5). According to the invention this movement is again effected in response to the movement of the bobbin rail carrier .25 or the lifting means.

The lever '34 which in its normal or resting position engages the fixed abutment 35 has fixedly connected thereto a control roller36. The circumference of said roller .36 is engaged .by .a chain .or .a belt v3/7 which is connected to .-a roll .38 preferably .mounted on the .main frame wall of the machine. The roll 38 has connected thereto a lever 39. An adjustable abutment screw determines the starting position of the lever 39 and prevents Said :lever 39 from dropping :due zto its town .weight ordue tothetension of the chain '37.

As soon as the full bobbins 27 have been replacedby empty bobbins 27 (Fig. an arm 41 pivotally con-.

nected to the gear box 17' is til ted from the position shown by dash lines into the position shown in full lines so as to abut the setting screw 42. In this position, when the gear box 17' or the bobbin rail carrier 25 moves upwardly, the arm 41 will engage the lever 39 and tilt the same from the position shown in full lines in Fig. 5 to the position shown in dash lines. As a result thereof, the roller 38 is rotated and the chain 37 is moved in the direction of the arrow 17 so that the lever 34 is tilted in the direction of the arrow 0. When being so tilted, the lever 34 by means of its pivot or stud 34 presses the bobbin rail 26 located adjacent thereto and provided with newly creeled empty bobbins 27' toward the rear (with regard to the drawings toward the right side) of the machine into the position indicated in dash lines in Fig. 5. As soon as the gear box 17' moves downwardly, the spring 43 returns the lever 34 and simultaneously therewith the roller or pulley 38 and lever 39 into their starting position. During the downward movement of the gear transmission 17, the arm 41 is by means of the abutment 44 lifted into the position shown in dash lines in Fig. 5 and is arrested in this position. Thus, during the next upward movement of the gear transmissin 17, the arm 41 will pass by the lever 39 without engaging the same.

By adjusting the setting screw 42, the starting position of the arm 41 and thus the stroke of the lever 34 can be precisely adjusted.

It is, of course, understood that the present invention is, by no means, limited to the particular construction shown in the drawings but also comprises any modifications within the scope of the appended claims. Thus, for instance, it is possible to release the shifting operations for the bobbin rail change not by means of the control transmission or gear box 17' generally called the lifting means, but also by a pin, cam or the like which at an appropriate position will be lifted or lowered.

What I claim is:

1. A method of changing a bobbin rail on fly frames and spinning machines, in which the bobbin rail carrying the bobbins is reciprocated in a vertical direction for forming the cops, which includes the steps of: lowering the bobbin rail with the full bobbins to be exchanged for empty bobbins below the normally lowest point of the bobbin rail during the cop forming operation and at a. speed increased over the normal reciprocating speed of said bobbin rail, at the end of said downward movement of said bobbin rail at the increased speed below said normally lowest point replacing the bobbin rail with the full bobbins by another bobbin rail with empty bobbins and moving said last mentioned bobbin rail into the place formerly occupied by said replaced bobbin rail, lifting said other bobbin rail with the empty bobbins to a level within the normal reciprocating range of the bobbin rail with the bobbins to be filled with cops, and starting reciprocation of said other bobbin rail with the empty bobbins within said normal reciprocating range at normal speed.

2. In combination in a textile machine having a bobbin rail carrier arranged exchangeably to receive and support a bobbin rail, means operatively connected with said bobbin rail carrier for selectively moving a bobbin rail supported thereby upwardly and downwardly for forming cops on the bobbins of said bobbin rail, means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said downward movement limiting means being adapted to be made inefiective to allow further downward movement of said bobbin rail carrier below its normally lowest point during the cop forming operation,

a receiving rail arranged below said normally lowest point and arranged to receive and hold in reserve a bobbin rail with emptybobbins, and means operable automatically in response to the downward movement of said bobbin rail carrier below said normally lowest point during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier upon said receiving rail and subsequently loading said bobbin rail carrier with a bobbin rail with empty bobbins received and supported by said receiving rail.

3. In a textile machine having a bobbin rail carrier movable upwardly and downwardly for forming cops, said bobbin rail carrier being arranged exchangeably to receive and support a bobbin rail, the combination of: spinning means for feeding threads to bobbins on a bobbin rail on said bobbin rail carrier, driving means arranged for selective driving connection with said bobbin rail carrier and also with said spinning means, means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said downward movement limiting means being adapted to be made ineffective to allow further downward movement of said bobbin rail carrier below the normally lowest point thereof during the cop forming operation, a receiving rail arranged below said normally lowest point and arranged to receive and hold in reserve a bobbin rail with empty bobbins, means operable in response to the downward movement of said bobbin rail below said lowermost point during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier upon said receiving rail, means operable by said bobbin rail carrier following said unloading of said last mentioned bobbin rail for moving a bobbin rail on said receiving rail into alignment with said spinning means while moving said unloaded rail out of alignment with said spinning means, and means responsive to the downward movement of said bobbin rail carrier below said normally lowermost point during the normal cop forming operation for automatically interrupting driving connection between said spinning means and said driving means and increasing the speed of the downward movement of said bobbin rail carrier.

4. In combination in a textile machine having a bobbin rail carrier arranged exchangeably to receive and support a bobbin rail, said bobbin rail carrier being movable upwardly and downwardly for forming cops on bobbins of a bobbin rail carried by said bobbin rail carrier, first abutment means arranged to limit the downward movement of said bobbin rail carrier during the forming of cops on said bobbins, said first abutment means being movable selectively out of the path of said bobbin rail carrier to allow the same to move downwardly beyond the normal limit of the downward stroke of said bobbin rail carrier, second abutment means arranged to limit the. downward stroke of said bobbin rail carrier after having passed by said first abutment means, loading rail means arranged at a level lower than the lowermost point of said bobbin rail carrier during the normal cop forming operation for receiving a full bobbin rail from said bobbin rail carrier in response to said carrier moving below said loading rail means, said loading rail means also being arranged additionally to receive and support a bobbin rail with empty bobbins, and means operable by said railcarrier to cause a bobbin rail with empty bobbins to displace the full bobbin rail on said loading rail means and taking up its original place thereon.

5. In a textile machine having a bobbin rail carrier arranged exchangeably to receive and support a bobbin rail and also having winding means for winding fiber material on empty bobbins of a bobbin rail on said bobbin rail carrier, the combination of: means operatively connected with said bobbin rail carrier for selectively mov mg the same upwardly and downwardly for forming cops on the bobbins of said bobbinrail, limit switch means arranged respectively .to limit the upward and downward I mal cop :forming reciprocating movement :of said lbobbin rail carrier, said :downward rmovement ilimit 'switch means being adapted to :be made ineffective :to :allow further downward movement of said bobbin rail carrier belowra level lower than ithe lowermost pointof said tbobbin rail carrier during the normal cop forming operatiou, loading rail means arranged below said lowermost :point :and adapted to store a bobbin rail With empty i-bobbins and to.receive a rail with full bobbins-inrespnsetoithemovementtof said :carrier below said rloading rail means, and lever means operable automatically :by said carrier in response to a downward movement of said bobbin rail below said loading rail imeans formovingthe bobbin rail with full bobbins received :by said loading rail means out of alignment with said winding means while said empty bobbins move ,into alignment with said winding means.

'6. An arrangementaccording to claim 59in whichsaid loading rail means:are-.provided with passage means to allow portions of said :bobbin rail carrier to pass therethrough fordofling the bobbin rail carried by said-bobbin railcarrier upon=said1loading rail means.

7. -In a textile machine having a bo'bbin rail carrier arranged exchangeably to receive and support -a bobbin rail and comprising spinning means including winding means for-windingfiberrmaterial npon bobbins of a bobbin rail'carried by said bobbin rail carrier, the'combination of: driving means, first power conveying means arranged selectively drivingly toeonnect or disconnect said'driving means with or from said spinning and winding means, second power conveying means arrangedselectively drivingly to vconnectsaid driving means'with said bobbin rail carrier for selectively moving the latter upwardly and downwardly for forming cops on the bobbins of said bobbin rail, stroke limiting vmeans arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normalcop'forming reciprocating movement .of said bobbin rail carrier, said downwardmovement stroke limiting means 'be'ingadapted to be made ineifective .toallow further downward movement of said bobbin rail carrier below its lowest'point during thenormal cop forming-operation, control means operable to make said downward :movementstroke limiting means ineffective, means operatively connected with said control means and arranged automatically in response'to 111B making of saidsecond stroke limiting'means ineffective by said control means to interruptthe driving connection betweentsaid driving means and said spinning means including said winding means, loading rail-means arranged below said lowest point and adapted to receive and store-a rail with .empty bobbins and'toreceive and with full bobbins .in response to the downward 'movement-of said bobbin rail carrier below said loading rail means, and ,lever means operable to move saidrailwith full bobbins out ;of alignment with said winding means and to move arail with empty bobbins on said loading rail means intoalignment with said windingmeans.

8. In combination in a :textile machine having a bobbin rail carrier arranged exchangeably to receive and support a :bobbin .rail and winding means for Winding fiber material on emptyEbobbins-of a bobbin rail on said bobbin IaiLcarrier, the combination of: means-operatively connected with said bobb'in rail carrier for selectively moving the same upwardly and-downwardly for forming cops on the-bobbins of said bobbin rail, 'means arranged respectively to =lim'it the upward and downward movement of said "bobbin :rail carrier for defining the normal 'cop forming reciprocating movement of said bobbin rail carrier, said :downward movement limiting 'means being adapted to be :made tineifective to'allow further downward movement qof said bobbin rail carrier below 'a level lower than :the lowermostpoint :of said bobbin ra'il carrier 'during the-normal cop :formingr'operation, do'fiing ra'il means arranged-at a.=leve'l:lower than the lowermost point of the bobbin [rail carrier during the cop forming operation and mounted :in the path of :the bobbin ,rail carried by said bobbin rail 1 carrier :for receiving said last mentioned -bobbin rail :in response :to the movement :of :said :carrier'below said-\dofling :rail means, said dofiing ra'il means also being :arranged -'to receive and store a Ibobbin rail with empty bobbins, and means associated with said dofiing :rail means zandoperable to slide along said doffing rail means fonmoving a'sbobbin'rail'filled with copsand received by said dofiing rail means out of the path of said carrier whilermoving arail with emptybobbinsinto the path-of said carrier, said means also :being operable to move a further rail with empty bobbins received by said-dotting rail rmeanszinto .the place originally occupied by said :first mentioned mil .with empty :bobbins onsaid dofling rail means.

9. An arrangementraccording toclaim'8, .in which the dofiing railrmeanshave oppositely inclined surfacesralong which said sliding :rneans tare slidable.

;10. .-In a textile machine having-a bobbin rail carrier arranged .eXchangeably to receive and support :a bobbin rail, and Winding means for winding fiber material on empty bobbins of 1a bobbinrail on saidbobbin rail carrier, the combination of: litter means operatively connected with said wbobbin rail carrier for selectively moving the same upwardly and downwardly for 'forming cops on the bobbins of'saidbobbin rail, means arranged respectively tolirnitlthe upwardandvdownward movementofsaid bobbin rail carrier for defining the normal LCDP forming reciprocating :movement of said bobbin rail carrier, said downwardmovement limitingmeans :being adapted to be madeiineffective to allowfurther downward .movement of said bobbin rail carrier-belowalevel lower than the'lowermost pointtof said bobbin rail carrier during the normal cop storming operatiomdofling rail means arranged at a level :lower than the lowermost point of the bobbin trail carrier during the cop forming operation :and mounted in the path of the bobbin rail carried bysaid bobbin'rail carrier for receiving said bobbin rail inresponse to said carrier :moving below said doffing rail rneans, loading and-unloading-means operable to slidealong said dofiing rail means in opposite direction for moving ,a bobbin .rail filled with cops and received by said -dofiing rail means out-of .the path of said bobbin railcarrier and placing a bobbin rail ,with empty bobbins into :the path of said bobbin rail carrier to be picked up by the latter during its subsequent .upward stroke and,-control means operatively connected to said lifter means and said loading :and unloadingmeans for controlling said loading and unloading means in response to a predetermined movement o'fsaid lifter means.

11. In .a textile machine having a bobbin rail carrier arranged to receive and support a bobbin rail and comprising spinning means including winding means for winding fiber material upon bobbins of a bobbin rail carried by said bobbin .rail carrier, the combination of: driving means, first power conveying means arranged selectively dr'ivingly to connector disconnect said driving means with or from said spinning and winding means, second power conveying means arranged selectively drivingly to connect said driving means with said bobbin rail carrier ,for selectively moving the lattertupwardlyanddownward'lyfor formingcops .on the bobbins of said bobbin rail, clutch means interposed between said driving means and said spinning means andbetweentsaid driving means and said second power conveying means,.said clutch means being operable 'to interrupt driving connection between said driving means and said spinning means while maintaining driving connection between said driving means and said second power conveying means, stroke limiting means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining thenormal cop'forming reciprocating movement of said bobbin rail carrier, said downward movement stroke limiting means being adapted to be made inefiective to allow further downward movement of said bobbin rail carrier below its lowest point during the normal cop forming operation, control means operable to make said downward movement stroke limiting means inefiective, means operatively connected with said control means and arranged automatically in response to the making of said second stroke limiting means ineifective by said control means to interrupt the driving connection between said driving means and said spinning means including said winding means, and means operable in response to the downward movement of said bobbin rail carrier below the point which is the lowermost point during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier and subsequently loading said bobbin rail carrier with a bobbin rail with empty bobbins.

12. An arrangement according to claim 11, in which said clutch means includes a clutch member drivingly connected with said spinning means and also includes braking means arranged for selectively braking said clutch a member.

13. In a textile machine having a bobbin rail carrier arranged to receive and support a bobbin rail and comprising spinning means including winding means for winding fiber material upon bobbins of a bobbin rail carried by said bobbin rail carrier, the combination of: driving means, first power conveying means arranged selectivel y drivingly to connect or disconnect said driving means with or from said spinning and winding means, second power conveying means arranged selectively drivingly to connect said driving means with said bobbin rail carrier for selectively moving the latter upwardly and downwardly for forming cops on the bobbins of said bobbin rail, clutch means interposed between said driving means and said spinning means and between said driving means and said second power conveying means, said clutch means being operable to interrupt driving connection between said driving means and said spinning means while maintaining driving connection between said driving means and said second power conveying means, said clutch means including a clutch member drivingly connected with said spinning means, breaking means arranged for selectively braking said clutch member, stroke limiting means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said downward movement stroke limiting means being adapted to be made ineffective to allow further downward movement of said bobbin rail carrier below its lowest point during the normal cop forming operation, lever means operable to make said downward stroke limiting means ineflective and to bring about actuation of said clutch means and said braking means, and means operable in response to the downward movement of said bobbin rail carrier below the point which is the lowermost point during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier and subsequently loading said bobbin rail carrier with a bobbin rail with empty bobbins.

14. In a textile machine having a bobbin rail carrier arranged to receive and support a bobbin rail and comprising spinning means including winding means for winding fiber material upon bobbins of a bobbin rail carried by said bobbin rail carrier, the combination of: driving means, first power conveying means arranged selectively drivingly to connect or disconnect said driving means with or from said spinning and winding means, second power conveying means arranged selectively drivingly to connect said driving means with said bobbin rail carrier for selectively moving the latter upwardly and downwardly for forming cops on the bobbins of said bobbin rail, stroke limiting means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said, downward movement stroke limiting means being adapted to be made inefiective to allow further downward movement of said bobbin rail carrier below its lowest point during the normal cop forming operation, lever means operable to make said downward movement stroke limiting means ineffective, control means operatively connected with said lever means and arranged automatically to cause said lever means to make said downward stroke limiting means ineffective when the bobbins of said bobbin rail have been provided with fiber material to a desired extent, and means operable in response to the downward movement of said bobbin rail carrier below the point which is the lowermost point during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier and subsequently loading said bobbin rail carrier with a bobbin rail with empty bobbins.

15. In a textile machine having a bobbin rail carrier arranged to receive and support a bobbin rail, and winding means for winding fiber material on empty bobbins of a bobbin rail on said bobbin rail carrier, the combination of: lifter means operatively connected with said bobbin rail carrier for selectively moving the same upwardly and downwardly for forming cops on the bobbins of said bobbin rail, a first motor drivingly connected with said lifter means and said winding means for driving the same, means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said downward movement limiting means being adapted to be made ineifective to allow further downward movement of said bobbin rail carrier below a level lower than the lowermost point of said bobbin rail carrier during the normal cop forming operation, a second motor arranged selectively to be drivingly connected with said lifter means only, control means operable to make said downward movement limiting means inefiective while bringing about interruption of the driving connection between said first motor and said lifter means and winding means while substantially simultaneously bringing about driving connection between said second motor and said lifter means, doffing rail means arranged at a level lower than the lowermost point of the bobbin rail carrier during the cop forming operation and mounted in the path of the bobbin rail carried by said bobbin rail carrier, loading and unloading means operable to slide along said doffing rail means in opposite direction for removing a bobbin rail filled with cops from said bobbin rail carrier and placing a bobbin rail with empty bobbins upon said bobbin rail carrier, and control means operatively connected to said lifter means and said loading and unloading means for controlling said loading and unloading means in response to a predetermined movement of said lifter means.

16. In a textile machine having a bobbin rail carrier arranged exchangeably to receive and support a bobbin rail, and winding means for winding fiber material on empty bobbins of a bobbin rail on said bobbin rail carrier, the combination of: lifter means operatively connected with said bobbin rail carrier for selectively moving the same upwardly and downwardly for forming cops on the bobbins of said bobbin rail, driving means, a first gear train arranged for drivingly connecting said driving means with said lifter means and said winding means for actuating said lifter means at a predetermined speed, a second gear train by-passing said first gear train and arranged for selectively effecting driving connection between said driving means and said lifter means, said second gear train including a transmission arranged to effect a step-up in the speed of said lifter means when the latter is driven through said second gear train, means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail ca-rrier, said downward movement limiting means being adapted to be made inelfective to allow further downward movement of said bobbin rail carrier below a level lower than the lowermost point of said bobbin rail carrier during the normal cop forming operation, dofiing rail means arranged below said lowermost point in the :path .of said rail .carrier forreceiving a rail with full bobbins .carried by said carrier in response to the movement of the latter below said dotting rail means, and .means responsiveto said downward movementlimib ing means being made inelfective to stop said first gear train and establishing operation of said second gear train for speeding up the lifter meanspreparatory'tounloading the bobbin rail .on said bobbin :rail carrier from the latter onto said .dofiing :rail means.

17. In a textile machine having a bobbin rail carrier arranged to receive and support a :bobbin rail, and winding means for winding fiber material on empty bobbins of a bobbin .raiLon said bobbin rail carrier, the combination of: lifter-meansoperatively connected with saidbobbin rail carrier for selectively moving-the same upwardly and downwardly for .forming copson-the bobbins of said bobbin rail, .a.polefchangeablemotor, gear train means including clutchmeans arranged for effecting driving connection between said motor and said winding means as well as said lifter means, means arranged respectively to limit the upward and downward movement of-said bobbin rail carrier for defining-the normal cop-formingreciprocating movement of said-bobbinrail carrier, control means operatively connected with said upward and downward limiting means for said bobbin railcarrier and operable to make said downward movement tlimiting means ineffective thereby allowing downward movement of said bobbin rail carrier below the level of the lowest point of the normal cop forming operation, and means responsive to the operation of said control means for actuating said clutch means to interrupt driving connection between said motor and said winding means-while bringing about a .shiftover of said motor to cause the latter to drive said lifter means at an increased speed.

18. In a textile machine having a bobbin rail carrier arranged to receive andsupport a bobbin rail and comprising spinningmeansincluding winding means for winding fiber material upon bobbins of a bobbin rail carried by said bobbin rail carrier, the combination of: driving means, first'power-conveying means arranged selectively drivingly'to connect or disconnect said driving means with or from said spinning and winding means, lifter means operable to effect lifting-and lowering of said bobbin rail carrier for forming cops on the bobbins of said bobbin rail, second power conveying means arranged for effecting driving connection of said spinning and winding means with said lifter means for actuating the latter, free wheel clutch means interposed in said second power conveying means between said lifter means and said spinning and winding means, third power conveying means arranged between said free wheel clutch means and said lifter means and arranged for driving connection \with said driving means, saidfree wheel. clutch means being designed to prevent driving connection from said third power conveying means to said spinning and winding means in response to the establishment of driving connection between said driving means and said third power .conveying means, stroke limiting means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of. .said bobbin rail carrier, .said downward movement stroke limiting means being adapted to be made ineffective to allow further downward movement of said bobbin rail carrier below its lowest point during the normal cop forming operation, and means operable to make said downward movement stroke limiting means ineffective while substantially simultaneously making=said third poWer'conveyi-n'g means effective.

'19. In combination'in a-textile machine'having a bobbin rail carrier arranged exchangeably to receive and support a bobbin rail: lifter means operatively connected to "said bobbin rail carrier for selectively moving said bobbin-rail upwardly and downwardly for forming cops on "the bobbins of said bobbin rail, motor means arranged for'driving connection with said lifter means for actuating the same, means arranged respectively .to limit the upward and downward movement of said bobbin'rail carrierfor defining the normal cop forming reciprocatingmovement of said bobbin rail carrier, said downward movement limiting means being adapted to be made ineffectiveto allow further downward movement of said bobbin rail carrier below its lowest point during the cop forming operation, means operable in response 'to the downward movement of said bobbin rail-carrier below the level of the lowermost point of travel of said bobbin rail carrier during said cop forming operation for automatically unloading a bobbin rail filled with cops from said bobbin rail carrier and subsequently loading said bobbin :Iia'il carrier with a bobbin-railwith empty'bobbins, and switch means responsive to a predetermined stroke of the 'upward movement of said bobbin rail 'carrier subsequent to the reloading of the latter to cause said rnotor means to stop to thereby stop said machine.

20. An arrangement according to claim 19, which includes means operatively connecting said loading "and unloading means with said switch means and operable in response to the actuation of said switch means during the upward movement of said bobbin rail carrier directly subsequent to the unloading and loading of said bobbin rail carrier to bring about return of said bobbin rail loading and unloading means to their starting position.

21. In a textile machine having a bobbin rail carrier arranged to receive and support a bobbin ra'il, the combination of: lifter means arranged for driving connection with said bobbin rail carrier and operable alternately :to lift andlower said bobbin rail carrier forforming cops on bobbins of said bobbin rail, stroke limiting means arranged respectively to limit the upward and downward movement of said bobbin rail carrier for defining the normal cop forming reciprocating movement of said bobbin rail carrier, said downward stroke limiting means being adapted to be made ineffective to allow further downward movement of said -bobbin rail carrier below the level of its lowermost point during the normal -co ,p forming operation, dofling rail means arranged at a'ilevel lower than the lowermost point of the "bobbin rail carrier during the cop forming operation and mounted in the path of the bobbin rail carried by said bobbin rafiL arr'ier, loading and unloading means operable to slide along said dofiing rail means in opposite direction for removing a bobbin rail filled with cops from said bobbin rail carrier into an unloading position and placing a bobbin rail with empty bobbins from a reserve position upon .said bobbin rail carrier, lever means adapted selectively to be moved into or out of the path of said lifter means, feeding means associated with said dofling rail means and operable to feed an empty bobbin rail from said unloading position to said reserve position, and connecting means driviug'ly connecting said lever means with said feeding means'to actuate the latter in response to the actuation of said lever means by said lifter means during the upward move ment of the latter directly following a bobbin change,

22. An arrangement according to claim 21, in which said lever means includes a tiltable lever pivotally connected to said lifter means and shiftable selectively into an effective position for bringing about movement of said feeding means and from said effective position into an ineffective position, and adjustable abutment means for varying the effective position of said tiltable lever.to thereby vary the stroke of said feeding means.

23. An arrangement according to claim '22 which. ineludes means operable to move said tiltable lever into ineffective position in response to a predetermined .downward movement of said lifter means.

24. An arrangement according to claim 21, which includes spring means for reutrning said feeding means to its starting position following a feeding stroke.

References Cited in the file of this patent UNITED STATES PATENTS Prince-Smith et a1. June 23, 1925

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