US1776263A - Winding machine - Google Patents

Description

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1; ATI'ORNEY5 Sept. 23, 1930. N. MARCALUS WINDING MACHINE Filed Dec. 27, 1924 Sept. 23, 1930. N. MARCALUS WIND ING MACHINE Filed Dec. 2'7, 1924 13 Sheets-Sheet 3 m N E V I A; ATTORNEYS Sepi. 23, 1930. N. MARCALUS WINDING- MACHINE Filed Dec. 27, 1924 13 Sheets-Sheet 4 INVENTOR WM 1W WM,MQ1 MZ 1; ATTORNEYS p 3,- 1930. N. MARCALUS 1,

WINDING MACHINE Filed Dec. 27, 1924 1S Sheets-Sheet 5 OLMEETOR A; ATTORNEYS Sept. .23 1930.

N. MARCALUS WINDING MACHINE Filed Dec. 27. 1924. 13 Sheets-Sheet 6 OWJZZWM A; ATTORNEYS swam, 193, N. AAAAAA Us Www I K. v INVENTOR Sept. 23, 1930,

N. MARCVZALUS' WINDING MACHINE Filed Dec. 27,1924 1s Sheets-Sheet. 8

P 23, 1930- N. MARCALUS 1,776,263

' WINDING MACHINE 13 Sheets-Sheet 9 Filed Dec. 27, 1924 Sept. 23:, 1930.

N. MARCALUS 1,776,263 WINDING MACHINE Filed Dec. 27, 1924 13 Sheets-Sheet 0 Q fi y II I I \n Q s I w I Q I I A z\ L LJ [L I I \N v i l k W I 0 1 I g t N N I 'Q gm QT E g 1 A ATTORNEYS WINDING MACHINE Filed Dec. 27, 1924 l3 Sheets-Sheet 11 1&4 ATTORNEYS Sept.23, 1930. N. MARCALUS WINDING MACHINE Filed Dec. 27, 1924 13 Sheets-Sheet 12 A; ATTORNEYS F ham,

S p 1930. N. MARCALUS 1,776,263

WINDING MACHINE Filed Dec. 2'7, 1924 15 Sheets-Sheet l3 F/ELU 0FMOTOR OwAZLNRSENTOR B WW2 AATroRNEYs Patented Sept- 23, 1930 i UNITED STATES, PATENT omce NICHOLAS MARCALUS, OI PLAINIIELD, NEW JERSEY, ABSIGNOB TOA'UTOHATIO P APEB MACHINERY 00., IN 0., OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY wnmnie mionmn Application filed December 27, 1e24,. Serial Io. 758,848.

This invention relates to web-winding machines.

- In my copending application Serial No. 624,357 (now Patent No. 1,628,322) I have 5 disclosed a machine in which sheet material is unwound from a parent roll, slit into strips of thedesired width, wound upon tubes or cores fed to the machine, cut to the desired length, wrapped, glued and discharged; all of these operations taking place automatically and continuing as long as any material remains upon the parent roll, and wrappers and cores are forthcoming. In order to perform these operations, the machine is provided with three sets of rollers which are automatically rotated in predetermined sequential combinations. One set, the winding and wrapping rollers hold and rotate the core and wind the material about it, slitting the material into sheets of appropriate widths at the same time, A second set, the feeding rollers, feed the material to the core from the to perforate it at intervals. When the'de sired length of material has been wound about the core, the feeding rollers stop while the winding rollers continue to rotate. ThlS tears the materials along a perforation and winding rollers continue to rotate long enough to tighten the wra per about the roll and insure the adhesion o the glue. There upon the winding rollers separateto discharge the wound, wrapped and S111. rolls, and a new core is fed into place. These operations are then repeated. In order that this sequence of operations may be carried out automatically the machine is provided with means for directing properly timed air jets against the oncoming end' of web to guide it about the core at the 1n1t1at1on of each'winding action. These three sets of rollers, the feeding, winding and wrapper feed, are operated-in their sequential relaincrease it to maximum winding parent roll and cooperate with a perforator h from high speed, the parent tions by means of-three-gear trains each controlling the rotation of a given set of rollers. These gear trains are thrown into and out of connection with a constant source of power in properly timed relation by means of a constantly rotating cam drum. This drum is also designed to control the core feed, the roll discharge mechanism, the perforator and the air 'ets'. It is roiadly the object of the present invention to make further improvements in automatic web-windingmach1nery and in. par- :ticular to modify and improve certain features of the machine descrlbed above.

vmass, the inertia of which must be overcome bythe pull exerted through the web itself. If an attempt is made to speed up the winding action too quickly the strain imposed upon the web is severe and will result either in its distortion or fracture. This inertia of the parent roll also makes it advantageous to decrease the winding speed gradually at the termination of the winding action, for if the winding mechanism is stopped suddenly roll, tending to continued rotation due'to its will tend to form a loop or slackness in the web which will result in imposing. a sudden strain upon it when the winding is resumed. In accordance .Iwith the present invention I effect this automatic acceleration and deceleration by means of a commutator, operated by the machine, which coo erate's with a lurality of contacts ta ped rom a series 0 resistances in series with the shunt field of the driving motor to throw these resistances progressively in and out at the initiation and termination respectively of the winding 8.0- 7 tion.

own momentum,

place .during the cycle of operations. In .accordance with the present invention, the

feeding roller gear train is thrown into and out of operative engagement with a constant- 1y rotating driving shaft by means of a sliding clutch, and in order that the engagement and disengagement of this clutch shall be made at exactly the right times I provide means operated by the cam drum'for delivering to it sharp hammer blows, properly timed and directed, when the feed rollers are to bestarted or stopped. In order to insure instantaneous stoppage of the feeding rollers when the clutch is disengaged I also provide a brake which is applied as the clutch is moved into disengaging position.

Another of the improvements of this invention is the provision of additional means for overcomin the inertia of the parent roll at the termination of each winding operation, and insuring an instantaneous stopage of both parent roll and web when the ceding rollers stop. The additional means which I employ are (1) a brake automatically applied at the end of each winding operation and released when the feed is resumed, (2) a continuously acting tensioning device automatically decreasing the drag on the web as the size of the parent roll decreases and with it its mass and momentum,'and (3) takeup means. I

I have also made other improvements in various details of construction and operation of winding machines not specifically discussed above, but which will be brought out in the description of the preferred embodiment of the invention illustrated in the accompanying drawings. In these drawings,

Figure 1 is an end view partly in section of a machine constructed in accordance with the present invention showing in general the relation between the main parent roll, the

wrapper rolls, the core feed hopper and the various feeding, winding and wrapper feeding rolls;

Figure 2 is a detail of part of the accelerating and decelerating mechanism showing the rotary contact plate, the contact buttons and the resistance box;

Figure 3 is a side elevation of the machine with part of the gear housing broken away;

Figure 4 is a plan View of the machine showing the staggered position of the wrapper rolls;

Figure 5 is a detail lan view of'the glueap lying roller and g ue troughs;

igure 6 is a transverse section through the machine showing, somewhat diagrammatically, the relation among the parent rolls, the core feed and the various rollers;

Figure 7 is a transverse section through the gear housing taken along line 7-7 of Fig. 12 showing the relations of the various gear trains,

Figure 8 is a detail of the controlling cam drum showing the various control levers upon which it operates, the frame being omitted for the sake of clearness;

Figure 9 is a transverse section through the feeding, winding and wrapper feed rolls showing their relation at the termination of a winding action'and at the initiation of the wrapping;

Figure 10 is a viewsimilar to Figure 9 showing the relation of the rollers just after a new core has been fed to the winding rollers;

Figure 11 is a transverse section through a wound slit and wrapped roll as it is discharged from the machine ready for manual separation into its units, and showing the over-lapping wrappers;

Fi ure 11 is a view similar to Fi ure 11 showing a roll of lesser diameter an wider individual wrappers;

Figure 12 is a horizontal section taken along line 1212 of Figure 1 showing the gear trains and showing in particular the core centering mechanism;

Figure 13 is a detail showing the cam actuated mechanism which controls the core centering members;

Figure 14 is a horizontal section through the main gear housing showing the feed roller clutch control mechanism;

Fi ure 15 is a detail showing the cam control or this cam operating mechanism;

Figure 16 is a vertical section taken along line 1616 of Figure 12 showing the relation between the various gear trains and in particular the feeding roller clutch, the

loo

wrapper roller clutch and in particular, the

wrapper roller clutch release;

Figure 17 is a detailed section taken along line 1717 of Figure 16 and illustrating the wrapper feed roller clutch;

Figure 18 is adetailed section taken along line 18-18 of Figure 16, likewise illustrating the construction of the wrapper feeding roller clutch;

Figure 19 is a vertical longitudinal section through the front of the main gear housing and illustrating in particular the perforating knife clutch and its control mechanism;

Figure 20' is a detail of the perforating knife clutch viewed in the reverse from Figure 19 and illustrating the clutch in disenga ing position;

igure 21 is a sectional detail showing the wound;

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means for arresting the rotation of the cam drum to permit rolls of various sizes to be Figure 22 is a section taken along line 2222 of Figure 21 and illustrating the gears which control the length of the wound roll; Figure 23 is a wiring diagram of the re-- sistancesin series with the shunt field of the driving motor and illustratin the manner in which this resistance is varie to accelerate and decelerate the driving speed; and I Figure 24 is a detailed side view of the controlling cam drum.

In describing the construction and opera- -tion of the'machine illustrated in these raw ings, I shall first describe briefly the general functions of the various feeding, wmding, wrapping, cutting and discharge elements without specific reference to their operating mechanism, and then describe the operating mechanism generall After this, I shall take up in detail t e various mechanisms which control the operation of the various parts, explaining first, their individual construction and operation and then making clear the manner in which they all cooperate to produce the ultimate product, i. e. a wound, wrapped and gluedroll, of unit length.

General functions, Figs.- 6', .9, 10, 11, and 11 terial which is to be unwound and wound again about cores into a series of smaller rolls, is mounted at the side of the machine and is indicated by reference numeral 1. The wrappers for the wound rolls are supplied from a series of staggered wrapper parent rolls 2 mounted upon the top of the.

machine. The cores 3 about which the web is rewound, are mounted within a core hopper 4 and fed thence into winding position' There are three main sets of rollers, the feeding! rollers 5, 6 and 7, the winding rollers, 8, 9 and 10, and the wrapper feeding and gluing rollers 11, 12, 13 and 14, all of which ex tend the entire Width of the machine and are positively driven. The winding rollers, which are continuously rotated, receive a blank core, wind the web about it, and then after the wound roll has been severed from the web, wind a wrapper about the wound roll and discharge it from the machine. The feeding rollers feed the web from the parent roll to the winding rollers, slit-it longitudinally and cooperate with other means to pen forate ittransversely. These rollers operate only during the winding action and are stationary during wrapping. The wrapper rollers feed the wrappers to the wound roll held between the winding rollers, apply glue to them and cooperate with means for severing them transversely into appropriate len hs. These rollers are stationary for the ma 0r part of the operation and rotate only during the wrapper feed. I shall nowdescribe these three sets of rollers and their as sociated parts starting with the feeding rollers.

feed, slit and perforate the web. The

feedin roller 7 is provided with spaced annular s 'tting knives 15'which cooperate with similarly spaced annular grooves 16 in the face of the feeding roller 6 to slit the web as it is fed between them into strips the width of which is equal to the length of the unit rolls. Mounted above the is a shaft 17 to which is aflixed a perforating knife 18. This shaft 17 and the knife 18 are designed to make a single revolution-when the desired length of web has been wound,

cooperating with a longitudinal slot 19 in the face of the roller 6 to perforate the web transversely. In order to insure positive contact between the feeding rollers, rollers 5 and 7 are mountedin sliding journals 20 and 21 which are urged toward the roller 6 by means of compression springs 22 and 23 respectively.

The function of the winding rollers is to hold the roll being wound, wind it, wra it and discharge it from the'machine. Of tlfese three winding rollers, 8 and 10 are fixed; roller 9, however, is mounted upon a frame 25 for swinging movement about stub shafts 26 so that as the diameter of the wound roll The parent roll containing the web of maincreases, room is automatically made for it between the roller 9 and the stationary rollfeeding roller 6 ers 8 and 10. Springs 27 secured to handle I extensions 28 on the frame 25 constantly urge the roller 9 upward toward the rollers 8 and 10, thus tending to wind' a tight r0ll..

When a roll has been wound and wrapped, the roller 9 is swung downward and the wrapped roll permitted to fall out of the machine by gravity. v

Before leaving the winding rollers, I shall describe the air jet pipes which direct the advancing end of the web about the core at the initiation of the winding action and which, cooperate with the winding rollers. There are two sets of such air pipes, 29 and 30, both of which receive their air from a duct 31, the pipes 29 directly, and the pipes '30 indirectly through a flexlble pipe 32 and a secondary duct 33. The pipes 30 are situated between the rollers 8 and 9 and direct the web between the core and the roller 9, while the pipes 29 situated beyond the roller 9 cause the web to follow the core back under roller 10. Pipes'30 are provided with extensions 35 which lie within annular grooves 36 in the face of roller 8 and act as guides in directing the oncoming web between the; core and the roller 8 and toward the roller 9. It will be observed that the discharge orifices of the pipes 30 are closely adjacent the core at the initiation of the winding action.

This makes the action very effective, but

would alsointerfere with the winding operation, were they not withdrawn. In order to with the frame 25 and thus it follows that as the roller 9 is swung downwardly by the increasing diameter of the roll, t e pipes 30 and their extensions 35 are likewise swung downwardly and eventually assume aposition as indicated in Figure 9.

The function of the wrapper feeding rollers is to feed the wrapper to the wound roll,

apply glue to it and sever it transversely into units of the proper length. The gluing is performed by means of the roller 14 which is provided at suitable intervals with sections 40 of reduced diameters (in this connection see also Figure 5), each of which car ries an eccentric 41. These eccentrics are machined so that for about one-third of their circumference they are of the same diameter as the roller 14 and have faces which lie in the same c lindrical surface, all as clearly shown in. igure 6. The eccentric portions 41 are mounted to dip into individual glue troughs 42. Thus, as the roller 14 rotates, it applies a series of spaced stripes of glue upon the wrapper, the length of each stripe being equal to the length of that portion of the eccentric 41 which contacts with the wrapper.

A shaft 44 carrying a knife 45, is mounted adjacent the roller 12 and is adapted to cooperate with a slot 46 in the roller 12 to sever the wrap er web so that a predetermined length 0t wrapper is employed for each wrapping operation. The rollers 13 and 14 are mounted within sliding spring-pressed journals 47 and 48 res ectively.

In order to guide the wrapper from. the wrapper feeding rolls through the winding rolls, I provide a series of guides 49 and 50.

The lower end of guide 49 is provided with.

an up-turned portion 51 which assists in directing the oncoming main web between the winding roller 8 and the core, and the lower end of guide 50 is provided with an extension 52 which serves to guide the main web between the roller 10 and the core. The roller 10 is provided with a series of suitably spaced annular grooves 11 which receive the guides 50 and their extensions 52.

I shall now describe the manner in which the cores are fed to the machine, scored, fed to the winding rollers and centered. The cores are fed from the lower end of the hopper 4 by an intermittently rotated star wheel 54 and onto two positively driven sup-porting rollers 55 and 56, of which the latter is mounted upon an arm 57 for swinging movement about a shaft 58. A lowerextension of the arm 57 is provided with a spring 53 which always urges the roller 56 upwardly and toward the roller 55 and the scoring knives to be described. Immediately above the two rollers 55 and 56 is a positively driven shaft 59 carr ing a number of suitably spaced sawtoothe scoring knives 60, spaced apart a distance equal to the length of the finished unit rolls, which distance is, of course, the same as that between the web slitting knives 15 on the roller 7 Furthermore, the corresponding knives in the series 15 and 60 are in the same plane. The function of the knives 60 v is to score without severing so that the cores proceed as one piece and not as a series of units. When the scoring is complete, the roller 56 is swung downward and the core dropped over a series of guides 61' to a second intermittently rotated star wheel 62, and thence fed to the winding rollers. In order to insure a proper alignment of the cores during winding and to prevent any weaving back and forth of the cores or telescoping of the web the ends of the cores are held between centering plugs 64 on the ends of arms 65 loosely pivoted about shaft 66.

By reference to Figure 4, it will be seen that the parent wrapper rolls are in staggered relation and the individual wrapper webs, as they pass between the wrapper feeding rolls, overlap each other. These overlaps come at the junctions of adjacent roll units so that the completed roll, before being divided into units, appears as illustrated in section in Figures 11 and 11.

I shall now briefly review the entire sequence of operations described above. Fig ure 10 represents the relative positions of the various rolls just after a wound and wrapped roll has been discharged, and a new core fed into winding position with the swinging roller 9 returning to winding position. The forward end of the main web is shown overlying roller 8 and guide 35. In Figure 6 the swinging roller 9 is shownreturned to winding position and everything in readiness for winding. The winding rollers are in constant rotation. At this point, the feeding rollers are started and air ejected from the air pipes 29 and 30. The web is thus unwound from the parent roll, fed to the core and guided around it. After the first revolution, the forward end of the web is tucked under, the air jets shut off, and the feedingandwinding continned. This goes on until the roll hasassumed the desired size. When this point is reached, the shaft 17 and its perforating knife 18 are givena single rotation, perfothe wrapper by means of knives 45.

between the tail end of the web and the roll, thus pinching it in place and making unnecessary the use of glue at this point to insure that the wrapper follows the roll. The gluestripes are applied to the wrapper by means of theroller 39 and cause the rear end of the wra per to adhere to the roll, meanwhile, sha t 44 has been rotated, thereby severli pig e wrapper feeding rolls are then stopped and the winding rolls continue long enough to tighten the wrapper about the wound roll; the roller'9 is thereupon swung downward and the wound wrapped and glued roll discharged from .the machine. These long rolls are then broken into units along the scored lines on the cores which also correspond with the slits made by the knives 15. Each in dividual unit is thus provided with a wrapper which extends beyond its ends on amount depending upon the width of the wrappers and the extent of overlap. These exten ing I portions can then be turned in and secured by means of a glued disc or otherwise General operating mechanism, Figs 7 8, 1Q,-

18 and Z9 I shall now describe generally, the various gear trains and other mechanism which actuate thefeeding, winding and wrapper feed ing rollers and their associated elements, and the core feed and scoring elements. These various rollers and their associated parts are supported by and iournaled within twoend frames 80 and 81, the frame 80 comprising a housing for the "major part of the operat ing mechanism. Power is supplied by a driving motor 70 provided with a pinion 82 on its shaft which meshes with a gear 83 keyed to a shaft 84 which constitutes the main drive shaft for the machine. Keyed to thisshaft 8% is a bevel pinion 85 which meshes with a simig-lar bevel pinion 86 heyed to a shaft 87 of a wworm 88. This worm 88 engages a worm wheel 89 on a cam drum 9(l'mounted upon a shaft 91. This cam druin isconstantly rotated throughout the entire cycle or operations (except for a period when it is arrested to permit the roll to he wound to the desired size, as will be explained later) and controls. all of the sequential operations or the various parts of the machine, as will be explained more fully when the operation of these parts isdescribed in detail.

The winding rollers are continuously rotated through a pinion 92 keyed to the drive shaft 84 and meshing with. pinions 93 and 94 on the shafts of winding rollers 8 and 10,

respectively. Pinion 93 meshes with a gear 95 journaled on the outer end of one of the stub shafts 26, and this gear meshes in turn" with a roller 9. w p

The feeding rollers are driven throu h a pinion 97 loosely mounted on driving s aft" means of a one tooth w pinion 96 on the shaft of winding 84 but-which can be made to rotate therewith shaft or and integral with the through a pinion 10d keyed to the driving inion 92. 1

This pinion 10d meshes with a pinion in.

tegral with a sleevelOB loosely mounted in turn upon a sleeve 107 which is keyed to a shaft 108 an extension of the shaft of the wra per feeding roller ii? The sleeve 10? is ma e to rotate with the sleeve 106 when necessary by means of a rocking clutch 109 con trolled hy the cam drum. Kc ed to this sleeve 107 is a inion 110 which mesh M8 on t e shaft of the gluing wrapper roller it and with a pinion ill. on the shaft of? wrapper feeding roller 12 which pinion mes es in turn a pinion HQ on the shaft of wrapper feeg roller 13.. Fixed to and coaxial with the pinion ill. is a mutilated pinion 113 of a Geneva movement, oi which the other pinion lid is keyed to the shaft A of the wrapper severing knife 45.

. Meshing with the ar 99 is a gear 115 bearing a 1 to 1 ratio therewith and heyed ripen a stub shaft ild coaxial with the shaft of the web perforating lrniiie i8. This gear 115 rotates with the gear 99 which drives the feeding rollers and; during the major part of the feeding operation, is unconnected with the shaft 17 carg the web per-forest ing 'lmife 18. At the proper time, however the shaft 1? and. its hire are thrown into operative engagement with the gear lit lay n clutch li'i', the operation of which is controlled hy the ca drum.

The core scoring hives and the rollers which hold the core during scoring so tated during the rotafion of the wrep mr roll ers through a pinion 3129 which meshes with pinion 112 and also meshes directly with pinions 121 and. 122 on the shaft 59 oft the scoring knives and the shaft oi the roller 5% respectively. Pinion 122 meshes with gear 123 loosely canted on shaft 58, and this gear in turn meshes with pinion 12s on the theft:

ofroller 56.. The two star wheels which iced the cores names core hopper first to the scor ing rollers d thence to the. rollers are rotated step by step hy means or a, chain 125 actuated by a pin on 126' which in turn is moved by a pin 12? on the cam die The downward swingin movement of the frame 25 carryingthe win 'ng roller 9 which results in the discharge of the wound'and' wrapped rolls is efie cted by an arm 128 carryes with a pinion roe lid

lid

ing a roller 119, acted on by a cam 129. As the roller 9 swings outwardly, either under the pressure of the increasing roll or through the action of swing arm 128, the pinion 96 continues to mesh with and be driven .by gear 95. Keyed to the shaft 58 to which the arms 57 are also keyed, is a lever 235 provided at its end with a roller 236 designed to cooperate with a cam 237 on the cam drum to 10 swing the roller 236 outward and permit the scored roll to fall upon the star wheels 62. As inthe case of the swing roller 9 of the windin set, this swinging movement of roller 56 does not interfere with its positive 5 drive, the pinion 124 always meshing with .gear 123.

I shall now describe in detail the several mechanisms which control and modify the operations described above, with particular go reference to the cam drum.

Speed control accelerating and decelerat dag), Figures LI, 2, 3 and 23 3c 2, 3 and 23 I have illustrated means whereby this well-known property of shunt-wound motors can be utilized. automatically to accelerate and decelerate the winding speed of this machine at the initiation and termmation respectively of the windin action.

In Figure 23 I have il ustrated a series of resistances 71 in series with the shunt field of the motor. These resistances are provided with taps which terminate in contacts A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R and S. A contact c linder 72 is mount: ed upon the shaft 91 of t e cam drum. This contact cylinder has on its face a metallic tra ezoidal commutator segment 74 curved to t the face of the cylinder. A manually operable swinging contact arm 7 5 is mounted a jacent the contacts K-R and designed to make contact with any one of them, and a similar contact arm 76 is similarly mounted adjacent contacts AB. In the positionsshown in Figure 23 the shunt field current of the motor passes through contact S, commutator segment 74, contact E, arm 76 and contact A. Thus, in this: position, all of the resistances 71 are cut out, the shunt field current is at a maximum, and the motor is rotating at minimum speed. If .now the cylinder 72 is rotated the contact E will be t e first to leave the segment 74, and thus the current will be forced to pass through contact F and through the resistance F-'A, thus increasing the speed of the motor. Upon further rotation of the cylinder, the contact F leaves the segment 74 and the current passes through contact G and resistance illustrated, the current passes through resistances RN through the arm 75 and through resistances J A. This condition remains unchanged until, upon continued rotation of the cylinder the other edge of the segment 74 is brought into contact withthe contacts 1 JE successively, andthe resistances are thrown out in the reverse order. Thus, by means of the arrangement shown in Figure 23 the speed ofthe motor is brought from a minimum to a maximum and is maintained at that maximum for the'major part of the rotation of the drum and then gradually reduced to the minimum again.

The absolute maxima and minima can be manually controlled by means of the arms 75 and 76 respectively. Thus, if the arm 75 is swung to the left, more'and more resistance is included in series with the shunt field during the major part of the winding operation and theactual operating speed of the motor is increased. When the arm 75 contacts with K the operating speed is at a maximum; when it contacts with B it is at a minimum. In a similar manner the arm 76 controls the minimum speeds. When in contact with A, as shown, the starting speed is at a minimum because all of the resistances are thrown out. As'the arm 76 is swung to the right, more and more resistance is included at the initiation of the winding and the initial speed is therefore higher.

Feeding roller control, Figures 8, I4, 15, 16' and 24 As explained before, the feeding rollers pinion 97 and loosely mounted on the drive shaft 84. The inner end of the clutch sleeve 98 is provided with a single clutch tooth 131 designed to engage a similar clutch tooth 132 on the outer face of pinion 104. As

pinion 104 is keyed to the drive shaft 84 4 and is in constant rotation, it is only necessary to slide the clutch sleeve 98 to the right, engaging the teeth 131 and 132, to impart the rotation of the drive shaft to the sleeve 98 and thence to the sleeve 130, the pinion 97 and the meshing train of the feeding roller gears. It is important, however, that the engagement and disengagement of this clutch take place very quickly so that the perforation across the web shall always stop at exactly the same position just beyond the rollers 7 and 8, and so that the web shall always feeding rollersare stationary. Cam 148 is disengaged, v

150 which encircles a brake drum 151 ke ed start to wind in timed relation 'ets. J I shall now describe the mechanism which effects this instantaneous engagement and disengagement. A trunnion 133 straddles the clutch sleeve 98 and is pivoted on the end of a lever 134 free to rotate about a stud 135. Inte ral with this lever and extending bet? the other side of the stud are two arms 136 each of which carries near its extremity a horizontal inwardly projecting screw 137. Also loosely mounted upon the stud 135, but below the lever 134 is a second lever 138 terminating in a boss 139 through which extends a pin 140 carrying upper and lower horizontal rollers 141 and 142 respectively. This lever also carries a centrally disposed lug 144 extending upward between the adjacent ends of the two screws 137. Mounted in the frame of the machine ad'acent the roller 141 is a plunger 145 provi ed with a V-shaped end constantly urged into contact with the roller 141 by virtue of a spring 146. That zone of the cam drum which rotates immediately below the stud 135 and its associated levers carries two cams 147 and'148. each having oppositely disposed angular faces designed to contact in succession with the roller 142. In the position shown in Figures 14. and 15, the clutch sleeve 98 is shown in disengaged position so that the with the air approaching the roller 142. When it contacts with this roller it will slowly force the lever 138 to the right (viewing Figure 14 with the sheet vertical), the roller 141 forcing the plunger 145 back against the pressure of spring 146. The moment the roller 141 passes the center of plunger 145, it is driven suddenly to the right through the action of the compressed spring, and the lug 144 strikes theright-hand screw 137 a sharp hammer blow which results in a quick movement of the clutch lever 98 into engaging position, and the feeding action starts. When cam 147 comes around again the roller 142 and lever 138 are moved to the left in a similar manner, and the clutch disengaged with the same quick movement which engaged it.

' In order to insure instantaneous stoppage of the feeding rollers when the clutch 98 is fhave provided a brake band to the shaft of the feeding roller 6. no end of this brake band is bolted to the frame of the machine at 152 and the other is secured at 153 to a brake lever 154 pivoted about a stud 155. The innerend of this brake lever is provided with a roller 156 which is constantly urged toward the brake drum by means of a spring 157secured to the outer end. For the greater part of the rotation of the cam drum theroller 156 is in a relatively elevated position so that the brake 150 exerts no pressure upon the brake drum."

Web perforating control, Figures 8, 19, 20

and 24 eration t e erforatingknife 18 remains stationary'. W en the desired length of web has been wound upon the core, it becomes necessary to erforate the webin order that, when the fee ing rollers are stopped, a continued rotation of the winding rollers will sever the web alon a straight and predetermined line. The per orating knife. is thrown in at this point and allowed to make a single revolution and then stopped. It is important that when this hapgens the knife cooperates exactly with the ongitudinal slot 19in the feeding roller'6, for even slight deviations, if cumulative, would break the knife. I shall now describe in detail means for effecting this single and accurately timed revolution of the knife 18.

As described earlier in the specification,

L'. Durin the major part of the feeding opthe shaft 17 of the perforating knife is driven,

coil spring 163 interposed between the clutch sleeve and the frame of the machine constantly urges the sleeve toward the gear 115 and into engaging position. This movement, however, is normally prevented by means of a roller 164 upon a lever 165 which fits within a groove 166 in the sleeve. This groove 166 is provided with an off-set portion 167 slightly deeper at its terminus than the rest of the groove, but having a sloping bottom which rises to meet the bottom of the groove 166 as most clearly shown in Figure 8. The roller 164 normally lies within the end of this ofi-set portion 167 and is held there by means of a spring 168 attached to the upper end of lever 165. This lever 165 is pivotally mounted upon a shaft 169 and held there against axial movement so that the,

roller 164 always remains in the same ver-

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