US2332371A

US2332371A - Continuous winding machine

Info

Publication number: US2332371A
Application number: US456918A
Authority: US
Inventors: Wesley S Corbin; Charles S Hartman
Original assignee: Scott Paper Co
Current assignee: Kimberly Clark Tissue Co
Priority date: 1942-09-01
Filing date: 1942-09-01
Publication date: 1943-10-19
Anticipated expiration: 1960-10-19

Description

Oct. 19, 1943. w. s. coRBlN ET AL CONTINUOUS WINDING MACHINE 5 Sheefs-Sheet l Filed Sept. l

Oct. 19, 1943.

\N. S. CORBIN ET AL CONT INUOUS WINDING MACHINE Filed Sept. l, 1942 5 Sheet'S-Sheet 2 Oct. 19, 1943.-

w. s. coRBlN ET AL.

CONTINUOUS WINDING MACHINE Filed sept. 1, 1942 5 sheets-Sheet 5 GC.- 19, 1943. W. s. CORBIN r-:T AL 2,332,371

CONTINUOUS WINDING MACHINE Filed sept. 1, 1942 5 sheets-sheet 4 Oct. 19, 1943.

y W. s. coRBlN ET Al.

CONTINUOUS WIND ING MACH INE Filed Sept. l, 1942 5 Sheets-Sheet 5 Patented oct. i9,y 1943 `asaaa'zi CONTINUOUS WINDING MACHINE wesley s. Corbin, Ridley Park, and Charles s.

Hartman, Chester, Pa., assignors to Scott Paper Company, Chester, Pa., a. corporation of Pennsylvania Application September 1, 1942, Serial No. 456,918

8 Claims.

This invention relates to machines for converting a continuous web of paper or other sheet material into rolls of commercial size.

More particularly, the invention relates to converting machines of this class which are adapted to operate continuously, said machine providing for transfer of the continuously moving web from each completed roll to a succeeding core or mandrel for initiation thereon of a new Winding operation.

The principal object of this invention is to provide a relatively simple and efficient machine of this characterf Another object of the invention is to provide a simplified and efficient device for transferring the web from the completed roll tothe empty core or mandrel; as previously set forth.

The invention further resides in certain novel and advantageous mechanical and structural features hereinafter described and illustrated in the attached drawings, in which:

Figure 1 is a side elevational view of a machine made in accordance with our invention;

Fig. 2 is a fragmentary front elevational view of the machine;

Fi'g. 3 is a sectional elevational view showing details of the reel which constitutes a part of the transfer mechanism;

Fig. 4 is a diagrammatic sectional View illustrating the mode of operation of the transfer mechanism;

Fig. 5 is a fragmentary sectional elevational view illustrating a phase of the operation of the transfer mechanism;

Figs. 6 and 'l are diagrammatic fragmentary sectional elevational views showing still further phases of the transfer operation, and

Figs. 8 and 9 are detached views in perspec tive illustrating elements of the mechanism shown particularly in Fig. 3.

With reference particularly to Fig. 4 of the drawings, the machine comprises. a reel I which is intermittently rotated, as hereinafter described. This reel has provision for supporting,

detachably, three mandrels 2 in uniformly spaced series around the axis of the reel shaft 3. The mandrels 2 function in the present instance to support

cylindrical core elements

4, 5 and 6 respectively, upon which a paper web l is wound to produce the finished roll product. In. the present instance, the web l, which may be drawn from any suitable source, travels continuously to the reel I, to be wound in successive lengths upon the cores supported on the respective mandrels. In Fig. 4, the core 4 has received its full complement of paper and carries a roll 8 of the required paper content. The paper `web has been separated from this finished roll and is being wound upon the core 5, as illustrated at 9. The core 6 occupies a position at the bottom of the reel in contact with a felt-covered applicator roll II, the under side of this roll being immersed in water I2 in a suitable container I3. Means is provided, as hereinafter described, for rotating the cores during the periods when the web is being wound thereon and While the core is in contact with the moistening roll II. l

In Fig. 4 the reel I is for the moment stationary, and means is provided, as hereinafter described, for temporarily locking the reel in this and the corresponding positions to facilitate re-A moval of the finished roll 8, and the insertion in the reel of the mandrel with a new core for reception of the web in a subsequent Winding operation. After removal of the finished roll and replacement thereof with a new core as described,

the reel is advanced, as hereinafter set forth, in the' direction of the arrow, this movement of the reel eventually bringing the core 6 into contact with the web 1 as the latter passes to the roll 9 still building on the core 5. During this movement of the reel, the web 1 continues to Wind upon the roll 9. As the -core 6 is brought into engagement with the Web, the transfer device, indicated generally by the reference numeral I4, descends upon the web intermediate the roll 9 and the core 6, thereby parting the web and tucking the free end thereof into the nip between the core 6 and a pinch roll I5 which is engaged with the core, as hereinafter described. This tucking ofthe end of the web around the moistened corel 6 initiates a new Winding operation, and thereby starts a new cycle of operations. In the present instance, the web 'I in passing to the reel I is acted upon by one or more cutter blades I6 so as to slit the web into two or more longitudinal sections, the cores upon which the Winding operation takes place being composed of contiguous longitudinal sections for reception respectively of the separate portions of the web.

Referring now to Figs. 1, 2 and 3, it Will be noted that the reel shaft 3 is journaled in a bracket or' brackets I'I extending transversely from the fixed frame I8 of the machine. Secured to one end of the shaft is a ratchet wheel I9 which is operatively engaged by a pawl 2 I on an oscillatory arm 22, this arm being pivotally mounted at 23 upon the bracket I'I. A spring 24 tends to draw the arm 22i away from the ratchet wheel I9, and the arm is advanced toward the wheel by action of a cam 25 which is secured to a cam shaft 26 suitably journaled in the bottom of the frame I8. The cam 25 is engaged by a roller 21 at the lower end of a. rod 28, this rod being slidably supported in

guides

29 and 3| in the frame IB, and the rod carries a boss 32 which is connected through an adjustable link 33 with one end 34 of the arm 22. Vertical reciprocation of the

rod

2,8 results in an oscillation about the pivot 23 of the arm 22 and in intermittent rotation through the pawl 2| and ratchet I9 of the shaft 3. It will be noted by reference to Fig. 1 that the pawl 2| is mounted upon a block 35 slidably held in a guide slot 35 in the arm 22, and a spring 31 is connected to the block 35 and to the arm 22 to retain the block with the pin 2| in the normal operative position with respect to the cam. The arrangement provides for outward movement of the pin in the arm to an extent clearing the teeth of the ratchet I9, which movement is required during the retractive movements of the arm 22.

It will be noted by reference to Fig. 1 that the ratchet wheel I9 is formed in effect with three uniformly spaced teeth whereby each oscillation of the arm 22 will cause the shaft 3 and the reel supported thereon to move through an angle of 120. As previously set forth, means is provided for locking the reel in the several positions to which it is moved by the action of the pawl and ratchet. The locking means consists of a bolt 33 mounted at the outer end of the arm 22 and projecting inwardly as shown in Fig. 2. Slidably supported on the bolt ls a collar 39 which is normally retained in an advanced position bearing against the head of the boltby a spring 4| supported on the bolt. The collar 39 is splined or is otherwise restrained from rotation about and upon the bolt, and has a radially projecting pin 42 which, as the arm 22 'moves to the left in Fig. 1, is adapted to engage an inclined vane 43 secured to a bifurcated tail element 44 on a pin 45, this pin being slidably supported in the bracket I1, as shown in Fig. 3. The outer tapered head end 46 of the pin has a projecting key 41 which fits into a slot 48 in the bracket I1 to thereby prevent the pin from rotating in the latter. A spring 49 on the pin 45 tends to project the latter by reaction with the bracket |1 into a socket 5| in the end surface of the reel and when the pin is thus entered in the socket, the reel is locked in position within its supporting bracket. By action of the pin 42 on the inclined vane 43, the pin 45 is retracted from the socket against the tension of the spring 49, so that the reel is then free to move under the action of the pawl and ratchet device previously described.

The arrangement is such that in the Working stroke of the lever 22, that is to say, when the lever 22 is moving to the left as viewed in Fig. 1, the pin 42 will first act on the element 43 to retract the pin 45, after which the continued movement of the lever 22 will engage the pawl 2| with the ratchet I9 to rotate the reel through an angle of 120, as previously set forth. After the initial movement of the reel, the pin 42 clears the inner end of the element 43 and thereby permits the spring 49 to advance the pin 45. Since this pin is now out of alignment with any of the three uniformly spaced sockets in the end of the reel, the end of the pin comes into engagement with the end surface of the reel itself and is not effective to immobilize the reel until the latter has advanced through an angle of 120, at which point the pin will again be brought into registration with one of the sockets 5| and will enter the latter under the pressure of the spring 49.

It is to be noted that the spring 4| permits a movement ofthe collar 39 on the pin 38 sufficient to permit the pin 42 to clear the outer edge of the inclined member 43, when on the back stroke of the leverv 22 the pin will engage the outer face of the said element. It is to be noted also that the working stroke of the lever 22 is suilcent to move the ratchet I9 through a full angle of and if the throw of the lever 22 is slightly in excess of that required to afford this angular movement of the ratchet, the lost motion between the lever and the ratchet is provided for in the ability of the pawl to move outwardly in the slot 36.

The indexed position of the reel, that is, the position occupied by the reel when it is immobilized by means of the locking means described above, is shown in Fig. 4. In this position, the roll at the upper left-hand corner of the reel is completed. The roll at the upper right-hand corner of the reel is in the process of buildup, and is in engagement with the pinch roll |5; and the core at the lower corner of the reel is in rotative contact with the felt-covered applicator roll While the reel is in this indexed and immobilized position, the completed roll is removed from the reel and is replaced by a bare core for a subsequent winding operation.

The manner in which the mandrels 2 and cores 6 are held in the reel is best illustrated in Figs. 2 and 3. The reel itself comprises the axis shaft 3, to the opposite end of which is secured a spider, 52 and 53 respectively. The spider 52 has three axially extending bosses 54 which are uniformly spaced around the shaft 3, so that each is separated from the other by an angle of 120. Journaled in each of the bosses on anti-friction bearings 55, see Fig. 2, is a spindle 56, and on each spindle is a pulley 51, the said pulleys being aligned'in a plane at right angles to the axis of the shaft 3, as illustrated. The outer end of the spindle 56 is provided with a rectangular socket 58 which receives one correspondingly shaped lextremity 59 of the mandrel 2. The spider 53 comprises three axially extended bosses 6| which are in axial alignment respectively with the bosses 54 of the spider 52. Journaled in each of the bosses 6| upon anti-friction bearings 62 in a sleeve 63, and within this sleeve is slidably supported a spindle 64. The spindle 64 issplined or keyed Y to the sleeve and carries a spring 65 which exerts pressure tending to hold the spindle in an extended position, as shown in Fig. 3. This extended position of the spindle is controlled by a head ange 66 on'the spindle which engages an end of the sleeve 63 to limit the movement of the spindle with respect to the sleeve. The. spindle may be retracted against the pressure of the spring 65, an axial space 61 being provided at the outer end of the boss for that purpose. The inner end of each of the spindles is recessed at 68 for reception of the extremity 69 of the mandrel 2 whereby the mandrel is supported for rotation between the aligned bosses 6| and 54 of the

spiders

53 and 52.

Preferably the mandrel 2 is `of the radially expansible and contractible type, such for example as that disclosed in U. S. application Serial Number 438,044, filed April 7, 1942. The cores 6 are inserted on the mandrel when the latter is in a radially contracted condition, and the mandrel is thereafter expanded so as to bind the mandrel frictionally in the core. It will be noted that the completed roll may manual retraction of the spindles 64 in the bosses 6I.

As previously described, the completed rolls are removed from the reel and a new core inserted while the reel is immobilized in the position shown in Fig. 4. Subsequent to the insertion of the bare core, the reel I is turned in the direction of the arrow, see Fig. 4, to bring the core which has received moisture from the roll I I into position to receive the web 1, and to carry the newly inserted bare core downwardly into engagement with the applicator roll I. It will be noted by reference toFlgs. 1 and 2 that the pulleys 51 on the mandrel spindles 56 are arranged for engagement by a common drive belt 1 I. This belt is supported in part upon a driven pulley 12 journaled on a bracket 13 on the frame I8y and on an'idler pulley 14 at the outer end of one of 'the brackets I1. Between the

pulleys

12 and 14 the belt is engaged by one or more of the pulleys 51 and also by a weighted takeup pulley 15 which is journaled on the end of an arm 16 pivlxotally attached at 11 to the bracket 13. The pulley 12 is driven by a belt 18 which operates on a pulley 19 connected with the pulley 12, as shown in Fig. 2. It will be apparent that as the reel I is rotated, the pulleys 51 of the respective mandrel spindles are brought successively into ,operative engagement with the belt 1 I. The belt is engaged initially by the pulley 51 of that one of the mandrels which is moving from the applicator roll II, so that the moistened and bare core carried by this mandrel is brought up to a rotational speed corresponding to or slightly in excess of the linear speed of the web'1-before the core is brought into engagement with the web. After transfer of the web is made to this core 6, the associated mandrel and pulley 51 are maintained continuously in operative engagement with the drive belt 1| until the winding operation is completed. The winding operation continues during the major part of .the rotational movement 'of the reel I, and until this movement has brought the succeeding bare core into contact with the web and the web has been parted, as hereinafter described. Immediately after the parting of the web, which occurs approximately in the position of the reel shown in Fig. 7, the pulley 51, which is associated with the mandrel holding the completely wound core, passes out of engagement with the drive belt '1 I, as shown in Fig. l, so that be readily removed from the machine.

The web-parting and transfer device consists of a plurality of arms 8| secured to a rock shaft 82 suitably journaled at the upper end of the frame I8. Supported in the outer ends of the arms 8| is a rod 83 which provides a pivotal support for a plurality of depending arms 84, the lower ends of the arms 84 being connected by a cross bar 85, and to this bar is rigidly secured a blade 86, the lower cutting edge 81 of which is serrated, as shown in Fig. 3. The blade 86 has a plurality of slots 88, and at the upper end of each of these slots and at one side of the blade a pair of bosses 89, in each of which pairs is supported a pivot pin 9|. Each of the pins 9| provides a pivotal tucking member 92, which as shown in Fig. 9 comprises a longitudinal blade 93 and an arm 94 more or less of C-shape and having intermediate its support upon the blade for a' the shaft ends'an aperture 95 for reception of the pin 9|. The member 92 is thus supported-in the slot 88 of the blade in a manner such that blade 93 and the upper transverse projecting end 96 of the arm 94 lie at one face of the blade, as shown for example in Fig. 4.

One or more springs 91 arms 8| and 84 tend to draw the latter inwardly to a position wherein lug 98 on the arm-84 engages the end of a set screw 99 on the arm 8|, this engagement limiting the movement of the arm 84 under action of the spring 91 and establishing the normal position of the blade 86'with respect tothe arm 8|. The tucking devices 92 normally assume by gravity the relative position in the blade 86 shown in Fig. 4, but are free to move with respect to the blade, as hereinafter described, in the tucking operation. Similarly the arm 84 may move to the left; as viewed in Fig. 4, about the pivot rod 83 on the outer end of the arms 8|.

The arms 8|, and the transfer device I4 as a whole, are adapted to be held in an elevated position through the medium of a latch or detent |8I at the top of the frame I8 which interlocks with a tooth |82 on a disk |83 secured to the shaft 82. The elevated position determined by the action of thislatching means is illustrated in solid lines in Fig. \l. .The arms 8| are adapted to be elevated to this position through the medium of a rod |84 which is slidably mounted in the frame I8 and which carries at its lower end a roller |85 for engagement with a c am |86 secured to the shaft 26 which also carries the cam 25 previously described. The rod |84 has a lug |81 which is connected to the arms through a link |88, this link being attached at its upper end to an arm |89 extending from the shaft 82. The cam |86 acts to elevate the arms 8| to a position higher than the aforesaid locked position, as indicated in broken lines in Fig. l, but downward movement of the arms after such elevation is limited by the latch I8I, which, as previously described, holds the arms in an elevated position.

The latch |8I is operatively connected with a solenoid III which, when energized, acts to retract the latch to thereby release the disk |83, 82, and the associated parts so as to permit the arms 8| and the parts connected thereto to drop downwardly, this release being timed to take place when the parts are approximately in the position shown in Fig. 6, in which position a bare core has been broughtr into con tact with the web. Downward movement of the arms 8| is aided by a. spring II5, one end of which is secured to the frame and the other end to an arm |I6 on the shaft 82; and the downward movement of the arms 8| is positively lim*- ited by a stop member I I2 on the frame 'i8 which carries a resilient pad I|3 for engagementbythe outer end of an arm I I4 on the shaft 82.

The mode of operation of the web-parting and tucking means is best illustrated in Figs. 4 to 7,

inclusive. The transfer device I4 is released by energization of the solenoid III, as hereinafter described, when it occupies the position approximately asv illustrated in broken lines in Fig. 7, the reel then being approximately in the position shown and the web extending uninterruptedly to the roll 8 also as indicated 'in broken lines. Downward movement.

sharp engagement with the web which is immedie ately parted, the free end of the web then being carried by the continued downward movement secured between the A of the transfer device brings the cutting edge 81 of the blade 86 into of the blade and of the associated tucking devices 92 downwardly and around the empty core 6, which is now in engagement with the web, as illustrated in Fig. 7. The projecting portions 96 of the tucking devices 92 rst engage the upper side of the rotating core, and as a result of this initial engagement, the blades 93 of the tucking devices are brought sharply up underneath the core 6, see Fig. 7, and close into the nip of the core 6 with the pinch roll H5. This carries the free end of the web around the core and upwardly to be caught under the web and in the said nip so as to initiate the new winding operation upon the core.

The pinch roll I is supported on a pair of arms HI secured to a shaft H8 suitably journaled in the frame I8, and theshaft H8 has an arm H9 which is connected to a spring |2| in such manner that the spring exerts a pressure tending to turn the shaft H8 in a counterclockwise direction, as viewed in Fig. 1. Thus the pinch roll I5 is held in pressure engagement with the empty core 6 as the latter is moved into engagement with the web and remains in pressure engagement with the roll during the major portion of the winding operation. In the subsequent movement of the reel, the partially wound roll is withdrawn from the pinch roll I5, as illustrated in Fig. 5, and the roll is then supported in engagement with the web and 'in the position shown in Fig. 5 by means of a stop link |22 associated with the spring I2 I.

After completion of the transfer, the cam |06 progressively elevates the arms 8| of the transfer device, as previously described, until the arms reach their maximum height, this corresponding to the point |23 on the cam |06, as shown in Fig. 2. This extreme position of elevation is shown in Fig. 6, and it will be noted that in this position the lower edge of the blade 86 is sufficiently high to afford clearance for the roll 8 when the reel I is turned as described. The cam |06 supports 'the arm in this extreme position of elevation over a period of time during which the reel is making the major part of one of its cyclic movements and until the roller |05 reaches the point on the cam |06 ,indicated at |24. Continued movement of the cam then permits the transfer dev'ice to move downwardly to a position shown in broken lines in Fig. 7 in which the lower edge of the blade 86 is relatively close to the web then passing to the roll 8, it being noted that in this position the pulley 51 associated with the roll 8 is still in engagement with the belt 'I I. The roller |85 is now at the point |25 of the cam |06, and a as the cam rotates the roller is entirely released to permit the transfer device to drop by gravity aided by the action of the spring H5, with the result described above.

The cam shaft 26 is driven through a reduction gear unit |26 by a belt |2'I which extends to a pulley |28 on a shaft |29. This shaft is suitably connected to a source of power, which source is also connected, by means not shown, with the belt 18. The shaft 26, in addition to the cams 25 and |06, carries a pulley |3| which is connected through a belt |32 and twist pulleys |33 with a pulley |34 on the shaft |35 of the roll I 'f It is apparent that the several operating parts of the machine may be closely synchronized to afford the operative results described above.

We claim:

1. In a machine for converting a continuously travelling web into a plurality of rolls of predetermined web content, a. rotary reel, means for supporting a plurality of winding members rotatably in circumferentially spaced relation on the reel, mechanism for rotating the members to wind the web thereon, means for rotating the reel to advance the members successively into proximity to the path of the web as the latter passes to another of said members, means for parting the web at a point between said members,and tucking means movable into the path of the web and into operative engagement with the said newly\advanced winding member for instituting winding of the web on the latter, said tucking means comprising a pivoted element having one end shaped to partly embrace the said member and constituting the active tucking medium, the other end of said element constituting a pilot lever, and means for advancing said element to bring the lever initially into engagement with the winding member to thereby pilot the other end of the element into tucking engagement with the said member.

2. In a machine for converting a continuously travelling web into a plurality of rolls of predetermined web content, a rotary reel, means for supporting a plurality of winding members rotatably in circumferentially spaced relation on the reel, mechanism for rotating the members to wind the web thereon, means for rotating the reel to advance the members successively into proximity to the path of the web as the latter passes to another of said members, a web-parting blade movable across the path of the web and into proximity to the said newly'advanced member, and means mounted on the blade for tucking the free leading edge of the parted web around the saidV member so as to institute the winding operation on the latter, said tucking means comprising a plurality of individual tucking elements arranged in series longitudinally of the blade and each coactive with a limited longitudinal section of the winding member, and said elemen ts being contiguously arranged so as collectively to embrace substantially the entire length of said member.

3. In a machine for converting a continuously travelling web into a plurality of rolls of predetermined web content, a rotary reel, a plurality of winding members rotatably and detachably supported on the ree] in circumferentially spacedi-,

relation, and means for winding measured lengths of the web successively on said members; said winding means comprising mechanism for intermittently rotating the reel so as to bring the winding members successively into proximity to the path of the web as the latter is winding on the preceding member, and means for transferring the web from the said preceding to the succeeding member,- said transfer means comprising a pinch roll resiliently supported in the path of the last-named member as it `approaches the web and on the opposite side of the latter, whereby the continued rotation of the reel eventually confines the web between the said member and the pinch roll, and means synchronized with the reel movement for parting the web at a point intermediate the said preceding and succeeding members and for tucking the leading free edge thereof between the said succeeding member and the pinch roll.

4. In a machine for converting a continuously travelling web into a plurality of rolls of predetermined web content, a rotary reel, means for supporting a plurality of winding members rotatably in circumferentially spaced relation on the reel, mechanism for rotating the members to wind the web thereon, means for rotating the reel to advance the members successively toward the path of the web as the latter passes to a preceding one of said members, means for clamping the traveling web against the surface of each succeeding member as it moves into an advanced position, and means operative on the web at a point between said succeeding and preceding members for parting the web from the one and for tucking the free leading edge of the web around the other of the members land into the nip of said clamping means so as to institute the winding operation on said member.

lthe path of the web as the latter passes to a preceding one of said members, means for clamping the traveling web against the surface of each succeeding member as it moves into an advanced position,- a blade movable to intersect the path of the web at a point between said succeeding and, preceding members and to part the web from the said preceding member, and means operativelyassociated with the blade and engageable with the freeleading edge of the web for tucking said edge around the succeeding said member and into the nip of said clamping means so as to institute the winding operation on said member.

6. In a machine for converting a continuously traveling ,web into a plurality of rolls of predetermined web content, a rotary reel, means for supporting a plurality of winding members rotatably in circumferentially spaced relation on 'the reel, mechanism for rotating the members to wind the web thereon, means for rotating the reel to advance the members lsuccessively toward the path of the web as the latter passes to a preceding one of said members, means for clamping the traveling web against the surface of each succeeding member as it moves into an advanced position, a web-parting blade movable across the path of the web at a point between said preceding and the succeeding newly advanced members and into proximity `to the latter, and means mounted on the blade for tucking the free leading edge ofthe parted web around the said member and int'othe nip of said` clamping means so as Yto institute the winding operation on said member.

7. In a machine for converting a continuously traveling web into a plurality 0f rolls of predetermined web content, a rotary reel, means for supporting a plurality of winding members rotatably .in circumferentially spaced relation on the reel, mechanism for rotating the members to wind-the web thereon, means for rotating the reel to advance the members successively toward the path of the web as the latter passes to a preceding one of said members, means for clamping the traveling web against the surface of each succeeding member as it moves into an advanced position, means for parting the web at a point between said preceding and the succeeding newly advanced members, and tucking means movable into the path of the web and into operative engagement with the said newly advanced winding member for instituting winding of the web on the latter, said means'including an element for inserting the web into'the nip of saidclamping means.

8. In a machine for converting a continuously traveling web into a plurality of rolls of predetermined Web content, a rotary reel, means Yfor supporting a plurality of winding members rotatably in circumferentially spaced relation on the reel,`mechanism for rotating the members to wind the web thereon, means for rotating the reel to advance the members successively toward the path of the web as the latter passes to a preceding one of vsaid members, means for clamping the traveling web against the surface of each succeeding member as it moves into an advanced position, a web-parting blade movable across the path of the web at a point between the preceding and succeeding newly advanced members and into proximity to the latter, and means mounted on thebiade for tucking the free leading edge of the parted web around the said member and into the nip of said clamping means so as to institute the winding operation on said membersaid 45 tucking means comprising a plurality of individual tucking elements arranged in series longi- CHARLES S. HAR'I'MAN.