Oct. 3, 1967 RoczKsTRoM LOW WEB-TENSION WEB-WINDNG MACHINE 4 Sheets-Sheet l1 l Filed ot. s, 1964 Oct. 3, 1967 RocKsTRoM 3,345,009
LOW WEB-TENSION WEB-WINDING MACHINE y v4 Sheets-Sheet 2 Filed Oct. 8, 1964 4 INVENTOR:
Oct. 3,l 1967 L.. ROCKSTROM LOW WEB-TENSION WEB-WINDING MACHINE 4 Sheets-Sheet 5 Filed oct. a, 1964 INVNTOR;
4 Sheets-Sheet 4 Filed Oct. 8, 1964 INVENTOR:
United States Patent O York Filed Oct. 8, 1964, Ser. No. 402,452 4 Claims. (Cl. 242-56) ABSTRACT F THE BISCLGSURE The incorporation into a turret type of web-winding machine having rst driving means applied to the axisof a winding core to turn the latter for winding a running web thereon, of second driving means in the form of a driving roller arranged to frictionally engage the surface of the web on said core to supplement the rst driving means, an antislip roller yieldably in engagement with the web on the driving roller, and a pair of controllably pivotal arms carrying, toward their ends, a web dellecting roller for deflecting a running web to cause the web substantially to encircle said core, and a knife controllably movably carried by said pair and adjacent to the ends thereof, with its cutting edge directed generally toward the direction of running movement of the web at a portion of the latter between said core and deflecting roller and, also, toward a web-receiving nip between said driving roller and said core.
This invention relates to machines for winding continuous web material into a so-called rewind roll.
In such machines, the rewind roll commonly is turned by driving means effective at its axis. Tension is generally maintained in the web, being drawn to the rewind roll, by braking means applied to a payout roll or to web emanating from a web-processing machine from which the web is passed to the rewind roll.
Under the just-mentioned arrangement, and in the absence of this invention, the web tension usually maintained between the rewind roll and its source of supply is high enough or great enough substantially to exclude air between plies of the web being wound upon the rewind roll and to yield a firm and otherwise generally acceptable, completely wound roll.
Such high tension strains the web and, in relatively thin, fragile materials, often strains the web beyond its breaking point, making it necessary temporarily to stop the winding operation and rethread the web through its course to the rewind roll. To avoid this diiculty, the practice may be comprised in the sense that the tension maintained may be eased; but such compromise may produce a rewound roll which is not entirely satisfactory.
The mentioned difiiculty has hitherto been substantially remedied in winding machines other than those of the turret type of the general character disclosed herein but, prior to this invention, it has not been remedied in turret type winding machines.
An important object of this invention is the provision of a turret type web-winding machine which operates at a relatively low web tension to provide a satisfactory wound roll.
Another important object is the provision of a turret type web-winding machine which may operate at relatively low tension and still substantially exclude air from plies on the rewind roll.
Another important object is the provision of a turret type winding machine which is capable of winding thin or fragile web material into a satisfactory rewind roll without undue strain upon the web.
Another important object is the provision of a turret type winding machine wherein the rewind roll is driven 3,345,69 Patented Oct. 3, 1967 at its axis but also has supplemental driving means effective at the surface of the rewind roll to control the application of the web to said roll to substantially exclude air from the latter and otherwise improve it.
Another important object is the provision of a turret type winding machine wherein such supplemental driving means are adapted for use with means for substituting a new rewind core for a web-filled rewind roll without material interruption of winding of the web.
The foregoing and other more or less apparent objects are derived from the present invention of which a preferred embodiment is illustrated in the accompanying drawings without, however, limiting the invention to that particular embodiment.
In the drawings:
FIGURE l is a vertical sectional view of a machine according to a preferred embodiment of this invention substantially on the line 1-1 of FIG. 4, but showing, also, a web-filled rewind roll and a new rewind core upon which winding of web material is about to be started.
FIG. 2 is a sectional view substantially similar to FIG. 1 but showing the condition of the machine after considerable accumulation of web upon the new rewind core.
FIG. 3 is an elevational view of a side of the machine as viewed in the direction of the arrow 3 at the top of FIG. 4.
FIG. 4 is a top plan view of the machine, omitting web material and some parts of the machine in order to supplement the other figures in showing the arrangement of important operating parts and the means for actuating the latter parts.
The illustrated machine is one in which provision is made for rapid substitution or changeover of a new rewind core for a completely wound rewind roll; this substitution being so rapid that the changeover may be effected with little or no slowdown of web travel to the winding machine from a web-processing or payout machine.
The machine comprises a stand or frame 10 having somewhat similar, opposed, spaced, rigidly interconnected, upright side members 12 and 14 between and in which are suitably borne the opposite ends of a turret shaft 16; a shaft 18, carrying pivotal supporting arms 20 of a web-severing assembly 22; a shaft 24, carrying pivotal supporting arms 26 of a web pulling or driving assembly 28; and an idler roller 30; the latter and said shafts being horizontal and being borne in parallelism in the frame 143 as may best be understood from FIG. 4.
The shaft 16, rotatably mounted in suitable bearings 31 carried upon the frame members 12 and 14, carries a turret 32 comprising aligned, opposed side-arms 34, 36 the centers of which are rigidly interconnected by a tube 38 through which the shaft 16 extends and to which said shaft is suitably keyed to constrain the side-arms 34, 36 to turn therewith.
Each of the side-arms 34 and 36 has oppositely offset lugs 40 serving as bearings for freely rotatable idler rollers 42 which extend between the arms 34 and 36 in parallelism to each other and to the turret shaft 16.
At opposite ends of the turrets arm 36 are suitably borne similar, rotatable chucks 44, 45 (FIG. 4), held against axial movement and having, at their inner ends, similar integral noses 46, shaped to tightly receive separately thereon the corresponding open ends of tubular cores 48a and/or 4S!) upon which web material is wound to form rewind or rewound rolls 49 of web material; only one such core being shown in FIG. 4. At their outer ends the chucks 44 and 45 have sprockets 50, 51, fixed thereon for driving of the cores in a winding operation as hereinafter described. The cores are identified herein as 48a prior to being lled with web material and as 4817 when winding of web material thereon has been completed.
At opposite ends of the turrets arm 34 are suitably borne rotatable chucks 52, somewhat similar to chucks 44, 4S, having integral noses 54 shaped to tightly receive thereon the opposite open ends of the tubular cores 48a and/ or 48h. The chucks 52 are free to turn with the cores which they engage but, unlike chucks 44, 45, they are axially slidable in their bearings between two positions indicated in broken lines in FIG. 4 to permit mounting of a new core 48a between the arms 34 and 36 and removal of a rewound roll 49 therefrom. The chucks 52 have hand grips 56 at their outer ends to facilitate manual, axial sliding thereof between engaged and disengaged positions relatively to related cores. Suitable means (not shown) are provided for securely holding the chucks 52 in their said engaged positions to hold the related core in place in the machine during a winding operation.
During substitution of a new core for a web-filled core in operation of the machine, the shaft 16 and the turret 32 fixed thereto are controllably given half turns about said shafts axis by a suitable, fixedly mounted motor 58, through reduction gears in a gear box 60, a pinion 62, and a large gear 64 suitably keyed to one end of the shaft 16. The turret 32 is intermittently turned counterclockwisely, as viewed in FIGS. 1 and 2, by this gear means, to carry a new core 48a from a service position SP, where the new core has been mounted in place of a previously removed fully wound roll, to a winding position WP.
Separate but substantially similar chain drives are provided to rotate the chucks 44 and 45 to turn the cores 48a to wind web material thereon. For example, the chain drive to chuck 44 (FIG. 4) which is in driving relation to a core 48a, comprises, as best understood from FIG. l, a sprocket 66 fixed upon the drive shaft of a fixedly mounted motor 68 in driving relation to an endless chain 70 which runs about a larger of two, coaxial sprocket wheels 72, 74 which are carried upon a shaft 76 suitably borne rotatably in side member 14 of the machine. The two wheels 72, 74 are suitably constrained to turn together as, for example, by being integral with each other or by both being both keyed upon the shaft 76.
A second endless chain, 78, is operative about the sprocket wheel 74, to be driven by the latter, and about a first wheel 80 of a pair of sprocket wheels 80 and 82 (FIG. 4) which are rigidly interconnected and mounted on and to turn independently of the turrets shaft 16. A third endless chain, 84, runs about the sprocket wheel 82 and a sprocket wheel 50 keyed to chuck 44 to drive the latter and, hence, a core 48a supported by said chuck. The web-winding action accomplished by the described driving of a core 48a for winding web material thereon is sometimes referred to herein as torque winding.
The foregoing description of chain drive means for rotating chuck 44, is applicable, also, to the similar means for driving chuck 45; components of the latter driving means which correspond to those of the previously detailed chain drive means being identified in the drawing by corresponding reference characters which differ only in the addition thereto of the suffix b.
A suitable mounting of sprocket wheels 80, 80h, 82, and 82b is illustrated in FIG. 4. The wheels 80h and 82b are rigidly interconnected by a sleeve 86b which is rotatably borne directly upon the shaft 16 and extends coaxially within the wheels 80 and 82; and the two latter wheels are rigidly interconnected by a sleeve 86 which extends over and about the sleeve 86h and is rotatably borne upon the latter.
The web-severing assembly 22 may best be understood from FIG. l, with some reference to FIG. 4. It comprises the pair of rigid, transversely aligned cuttercarrying arms 20, both keyed to the shaft 18 toward opposite ends thereof, within the frame 10. Disposed horizontally and in parallelism with each other between the arms 20 are a web-defiecting roller 88 and an electrostatic crossbar 90. The roller 88 is borne at its ends in the two arms 20 for free rotation, and the electrostatic bar is rigidly fixed at its opposite ends to said arms; these members 88 and 90 being disposed approximately as shown in FIG. 1, in relation to the arms 20. The bar 90 may be electrostatically charged by suitable charge generating means (not shown), at the start of winding of electrostatically responsive web material, as hereinafter explained.
A pair of substantially similar cutter-actuating arms 92 are separately pivoted at points 93 to the free ends of the arms 20 and extend adjacent to the inner faces of the latter arms. The arms 92 are rigidly interconnected by a crossbar 94 carrying a preferably serrated knife 96 extending along the latter crossbars inner edge. A fluidpressure cylinder 98 and a piston rod 99 of said cylinder are pivotally linked between a bracket 100, fixed upon one of the arms 20, and the otherwise free end of one of the arms 92. The cylinder 98 and its said rod serve to swing the two latter arms and the knife 96 to sever a running web as hereinafter explained. Such a cylinder 98 may be employed on each of arms 20, as shown in FIG. 4, if desired.
A fluid-pressure cylinder 102, pivoted to a bracket 104 secured to the stand 10 at or near the bottom of the latter is arranged with its piston rod 106 pivotally linked to one of the arms 20 to actuate the latter arms as hereinafter described.
In addition to torque winding by driving of a core 48a as described, this invention contemplates the use of supplemental driving means for imparting an additional winding action. This additional winding action, hereinafter sometimes referred to as surface winding, is accomplished by the use of a driven web-applying roller 108 which, as it draws web material from a related web supply or processing source, is sometimes referred to herein as a pull roller.
The web pulling or driving assembly 28 comprises the pull roller 108 which is as long as any core 48a (or equivalent series of smaller coaxial cores) which may be used in the machine. The roller 108 is borne for rotation, in parallelism with a core 48a at Winding position WP, by a shaft 109 to which said roller is keyed. The shaft 109 is borne in the corresponding ends of the pair of arms 26, the opposite ends of which are keyed to shaft 24 toward opposite ends thereof. Also keyed to the shaft 24, at one end thereof, is an actuating arm 110 to the otherwise free end of which are pivotally connected a piston rod 112 and a related Huid-pressure cylinder 114, the latter of which is pivotally mounted on a bracket 116 suitably fixed to the frame of the machine.
The pull roller 108 is driven by any suitable means such as gears or endless chains, the latter form of driving means being illustrated. As best seen in FIG. 3, an endless chain 118 is driven by a power take-off pinion 120 of a precisely controllable motor 122 and drives a sprocket 124 keyed to a shaft 126 suitably borne in the machines frame. Also keyed to the shaft 126 is another sprocket 128 which drives another endless chain 130. The latter runs about one sprocket wheel 132a (FIG. 4), to turn the latter wheel and another sprocket wheel 132b; these two wheels being coaxial and rigidly integral or otherwise keyed together to constrain them to turn together as a dual sprocket 132. The dual sprocket 132 is borne on shaft 24 for free rotation relatively thereto. 134 which drives another sprocket 136. The latter sprocket is keyed to shaft 109 to drive the latter and the pull roller 108. Pressure of the pull roller 108 against a core 48a and web being wound thereon at winding position WP is controlled by control of fluid pressure in cylinder 114 and the speed of rotation of roller 108 is controlled by control of the operation of the Imotor 122.
A pair of arms 138 are intermediately keyed to opposite ends of a cross shaft 140 which is pivotaly supported in lugs 142 at the ends of the arms 26. An antislip roller 143 is borne for free rotation in corresponding ends of the arms 138. A fluid-pressure cylinder 144 and its related piston rod 146 are pivotally linked between a lug 148 formed at an intermediate part of one of the arms 26 and an adjacent end of one of the arms 138 to actuate both of the latter arms in unison while holding the roller 143 in parallelism with pull roller 108. In operation, the roller 143 exerts, on web material passing between it and roller 108, a pressure -controllable by control of the fluid pressure in cylinder 144. The cooperation of rollers 143 and 108 serves to prevent slippage of web material on the latter roller as it applies web material to a core 48a and the roller 108 contributes to driving of said core during a winding operation. Optionally, a crosswisely extending web-backing bar'150 (FIG. l) may be employed to cooperate with knife 96 in cutting the web material at the time of a winding shift from a filled rewind roll to a new core 48a at winding position WP. The bar 150 is preferably rigidly fixed at its op- Y posite ends-to lugs 152 integral with the arms 26 at the latters corresponding ends.
An understan-ding of the operation of the presently disclosed machine may best be gained by tirst referring to FIG. 2 wherein a filled rewind roll 49 is at service position SP in readiness for removal from the machine by any suitable means (no-t shown) and an only partly filled core 48a is having web material W wound thereon. The web W, passing from supply `or processing apparatus (not shown) in the direction of an arrow applied thereto passes under idler roller 30, thence over pull roller 108 and partly around the latter and between the roller 108 and the core 48a and onto the latter. Meanwhile, the arms and all the apparatus carried thereon are in lowered position as shown.
During such Winding, the core 48a and web accumulating thereon are rotated, in the direction of the arcuate arrow shown thereon, partly by torque applied to the cores axis by motor 68 through endless chains 70, 78 and 84, working on their several described related sprockets, and partly by the pull roller 108 which is pressing against the core 48a and web thereon and is being driven, in the direction of the arcuate arrow shown thereon, by the motor 122 through endless chains 118, 130, and 134, working on their several described related sprockets.
The speed at which the related supply or processing apparatus feeds the web W to the winding machine is a function of that apparatus. That speed, ordinarily, would be relatively constant or in any event not likely to vary to any great extent; hence, the winding speed of the illustrated machine must be conformed to the speed of supply of web thereto. Thus, the angular or rotational speed of the core 48a is greatest at the beginning of the winding of web thereon and must decrease as web accumulates thereon to a greater roll diameter. For that reason, the driving effect derived from the motor 68 is automatically slowed by motor control means (not shown) throughout a winding operation to maintain a balance between the speed of supply of web to the winding machine and the speed with which the web is taken up on the core 48a.
It will be realized that, during a winding operation, the speed of rotation of the pull roller 108 need vary, if at all, -only to the extent of and in coordination with variations in the speed at which the web W passes to the winding machine. To maintain such speed coordination, controls (not shown) having a iine range of adjustment are provided for motor 122 so that very close regulation is 'obtainable as to the feed of web from pull roller 108 to the core 48a. If the speed -of the feeding of web to the winding machine varies, the speed of rotation of the roller 108 may be correspondingly varied automatically by known control means (not shown) for controlling motor 122 to maintain a substantially constant web tension condition between the windinU machine and apparatus supplying the web thereto.
. In prior winding machines the tension of web passing thereto had to be quite substantial to exclude air from between plies of web in the rewind roll for the latter to possess acceptable firmness. Such substantial tension was great enough in some instances and with some web materials to cause excessive straining of the web, causing eX- aggre-gation of some web defects and, on some occasions, breaking of the web.
According to this invention, however, the need for such substantial Iweb tension is avoided and the web being directed toward the pull roller 108 is normally at very slight slack. The present invention, despite such slight tension or slackness, operates, through the pull roller 10S and/or the antislip roller 143` to exclude air from between web Ibeing applied to core 48a and the immediately underlying ply of web on said core.
The contribution of roller 143 to such exclusion of air arises from the fact that said roller is held firmly against the pull roller 108 by the Huid pressure in cylinder 144 and has the effect of pressing or ironing the web upon the roller 108 as it reaches the latter. The pressure in said cylinder is maintained at a value suiiicient to .achieve the mentioned ironing effect as well as to prevent slippage of web relatively to roller 108 as `already mentioned.
Having in mind that, as already mentioned, the pull roller 108 is continuously urged Kagainst the core 48a, and web accumulating thereon, by the fluid pressure maintained in the cylinder 114, it will be understood that the roller 108, with the web pressed tightly thereupon by the roller 143, presses the web evenly and forcibly against web already wound on the core 48a, thereby preventing ingress of air between plies of web as the latter is wound upon the core. The pull roller 108 thus inhibits such ingress of air irrespective of whether the rotation of the core is slightly speeded to make the resulting rewind roll 49 harder or is slightly slowed to provide a softer rewind rloll.
As the winding of web on core 48a at winding position WP approaches or reaches completion, suitable controls (not shown) of mot-or 58 are operated to cause said motor to give turret 32 a one-half turn counterclockwisely, as viewed in FIGS. l and 2, to bring the just-filled core as a rewound roll 49 to service position SP and to bring a new core 48a to winding position WP.
During such movement of a new core to winding position WP, the pull roller 108, gradually moved upwardly by the accumulation of web on the just fully rewound roll 49, is held in its upward position clear of the arcu-ate path of movement of the new core 48a until the latter arrives at winding position. To that end, the Huid supply to pressure cylinder 114 is suitably controlled, first to hold the arms 26 up .and then to lower said arms and roller 108 to bring the latter into and hold it in pressing engagement with web then running between it and the new core 48a.
Before and during the described rotation of the turret 32, the arms 20 and the entire web-severing assembly 22 carried thereby, are in their lowered positions shown in FIG. 2, in noninterfering relation to the filled rewind roll moving `arcuately from winding position WP to service position SP. After the iilled rewind roll moves past and clear lof the path of upward movement of the arms 20 and the severing assembly 22, and approaches service position SP, uid pressure, by suitable controls (not shown) is charged into cylinder 102 to swing said arms and severing assembly upward to its severing position shown in FIG. l. This operation of said cylinder, arms and assembly is so timed that the new core 48a is .at or closed to winding position WP before the rising arms and assembly pass upwardly, without interference with the new core, to their uppermost positions shown in FIG. l within and into the arcuate line of movement of the new core to winding position.
The described upward movement of the web-severing assembly 22 causes the Web-deflecting idler roller 88 to engage the underside of web then running from the underside of the new core 48a thence underneath and in engagement with the then lowermost one of the two idler rollers 42 and to the substantially filled rewind roll 49 which is still being rotated by its related chain and driving motor assembly.
The raising of the web-severing assembly to its uppermost position, as shown in FIG. 1, causes dellecting roller S8 to deflect the web upwardly to its course of linear movement shown in said ligure. In that course of movement a portion of the web, running ,from the core 48a to r-oller 88 is directly opposite and adjacent to the cutting edge of knife 96.
Immediately upon completion of the upward movement of the cutting assembly to its FIG. 1 position, the fluid supply to cylinder 98 is so controlled as to cause the arms 92 to pivot leftwardly, as viewed in FIG. 1, thus causing the knife 96 to sever the running web. In doing so, the knife moves -leftwardly, thereby exerting a guiding action upon the leading end of the severed web to tuck said leading end between the new core 48a and web then passing from roller 108 to said core, as the start of winding of web on the new core.
After arrival of the rewound roll 49 at service position SP and severence of the running web therefrom and before a succeeding similar turning of the turret, motor (68 or 68b) driving that rewound roll is stopped, the rewound roll is removed, by ,any suitable means, from the turret, and a new core 48a is substituted therefor.
If the web being wound is of such character as to aocept an electrostatic charge, the means provided for establishing such a charge in the crossbar 90 are momentarily operated immediately before the described web-cutting operation. That electrostatic charge, being accepted by the leading end of the web, operates as a web-tucking means, causing the web to cling to the new core to start the new winding operation. If necessary, the material of the core may include suitable material to facilitate this clinging action. Other tuck-assisting means such as, for example, a suitably directed air blast (not shown) may alternatively be employed if desired.
After the described severance of the web and the cornmencement of winding of web on the new core 48a at winding position WP, the pressure cylinder 98 is operated to swing arms 92 to retract the knife 96 and pressure cylinder 102 is operated to lower the arms 20, and the apparatus carried thereby, to their lowermost position shown in FIG. 2. This leaves the machine operating to wind the web on the new core 48a and in condition to again function as already described upon completion of the new winding operation; and the filled rewind roll 49 is in position for removal from the machine whereafter a new core is inserted in place of the removed rewind roll.
It has been indicated that control means (not shown) may be employed to cause the winding means and the roll-changing means to operate substantially as described. The mentioned control means per se do not constitute this invention and may be various kinds and may operate in various ways.
For example, starting of motor 58 to turn the turret 32 may be caused by manual operation of a starting switch controlling said motor, or a starting switch for that motor may be operated automatically upon the accumulation of a predetermined quantity of web being wound upon a core 48a. A futher control alternative may be provided by omitting the motor 122 and having the pull roller 108 driven by the machine supplying web material to the winding machine or by the web-supplying machines driving means. The starting of motors 68, 68h may be automatically controlled by starting switches operated by turning of the turret in bringing a new core 48a to winding position WP; and stopping of the latter motors may be automatically controlled by switches operated by movement of arms 92 as the latter actuate the knife 96 to cut the web. The electrostatic crossbar 90 may be connected electrically to a suitable generator, transformer or equivalent means with suitable controls, responsive to arrival of the arms 20 at their uppermost positions, for energizing said crossbar.
It should also be noted that the control of fluid operating the fluid-pressure cylinders 98, 102, and 114 may be effected through valves which operate in 'response to movements of various parts of the machine to cause the described sequence of operation. The value of the pressure in cylinders 114 and 144 may be so regulated during a winding operation as to yield the desired forcefulness of engagement of pull roller 108 with web on the core 48a and of roller 143 with web passing between the latter and pull roller 108.
As automatic electrical and Huid pressure control means have reached a high stage of development, it will be understood that manual and/ or automatic control means other than those already mentioned may likewise be employed to cause operation of this invention either partial- -ly or fully automatically in an operational sequence as hereinbefore described.
It should also be understood that the inventive combination disclosed herein may be practiced in various other ways without, however, departing from the invention as set forth in the following claims.
1. In a turret type of web-winding machine having plural pairs of angularly movable core-carrying arms with means, toward their ends, for carrying rotatable cores upon which web is to be wound at a winding station, and axial driving means coacting directly with said cores for turning the latter `to wind a running web thereon; the improvement comprising a controllably driven, web-applying, pull roller, located between a related web supply and a new core located at said winding station, and yieldably in rictional driving engagement with said web on a new core to turn the latter to impart surface winding thereto supplemental to the driving effect of said axial driving means, a freely rotatable antislip roller, iyeldably in engagement with a web portion on said pull roller at a circumferential point on the latter substantially removed from the point of driving engagement of the pull roller with the web on said core, and a web dellecting and cutting assembly comprising a pair of controllably-pivotal, assembly-carrying arms, pivotally supported outside of the circular path of .movement of cores carried by the core-carrying arms and adapted to swing their free ends within said path, and a web-deflecting roller and a knife carried between said assembly-carrying arms toward the free ends thereof; the web-deflecting roller being positioned to engage web running between a new core at said winding station and a roll of web on a core at another station of the machine upon inward pivoting of said assembly carrying arms, and to deliect the thus engaged web whereby, in cooperation with said pull roller, to cause the web to extend about a predominant circumferential portion of the new core, the web-dellecting roller, in its innermost position, being parallel to and spaced from web material on the new core and on the pull roller and in close opposition to a web-receiving nip between said new core and pull roller, and said knife being controllably movably carried between said assembly carrying arms with the knifes cutting edge directed generally in the direction of running .movement of a portion of web running from the new core toward the web-deflecting roller and being directed also toward said nip, whereby cutting movement of said knife toward said nip serves both to cut the web at said web portion and to tuck a leading end thereof into said nip.
2. The improvement of claim 1 further including a pair of pivotal, drive-transmission arms between the free ends of which said pull roller is carried, and a web backing bar fixedly extending between the latter arms in parallelism with said pull roller, which bar, when the deflecting roller is in its innermost position, extends between said nip and said portion of web running from the new core toward the deecting roller, in position to back up the said otherwise nonbacked said web portion whereby to cooperate with the knife in cutting of the web.
3. In a turret type of web-winding machine having plural pairs of angularly movable core-carrying arms with means, toward their ends, for carrying rotatable cores upon which web is t-o be wound at a Winding station, and axial driving means coacting directly with said cores for turning the latter to wind a running web thereon; the irnprovernent comprising a controllably driven driving roller, yieldably in frictional driving engagement with a web on a new core at said winding station to turn the new core to impart surface winding thereto supplemental to the driving effect of said axial driving means, and a web deecting and cutting assembly comprising a pair of controllably pivotal, assembly carrying arms, pivotally supported outside of the circular path of movement of cores carried by the core-carrying arms and adapted to swing their free ends within said path, and a web-deflecting roller and a knife carried fbetween said assembly carrying arms toward the free ends thereof; the web-deecting roller being positioned to enga-ge web running between a new core at said winding station and a roll of web on a core at another station of the machine upon inward pivoting of said assembly carrying arms, and to deect the thus engaged web to cause the latter to extend about a predominant circumferential portion of the new core, the webdeilecting roller, in its innermost position, being parallel to and spaced from web material on the new core and on the driving roller and in close opposition to a web-receiving nip between said new core and driving roller, and said knife being controllably movably carried between said assembly carrying arms with the knifes cutting edge directed generally in the direction of running movement of web running from the new core toward the web-deflecting roller and being directed also toward said nip, whereby cutting movement of said knife toward said nip serves both to cut the web and to tuck a leading end thereof into said nip; the improvement further including a pair of pivotal, drive-transmission arms between the free ends of which said driving roller is carried, a pair of antislip roller carrying arms pivotally attached to the drive-transmission arms, an antislip roller carried between said antislip roller carrying arms toward the free ends thereof, and controllable biasing means yieldably urging said lantislip roller against web on said driving roller to oppose slipping of web running between the two latter rollers.
4. In a turret type of web-winding machine having plural pairs of angularly movable core-carrying arms with means, toward their ends, for carrying rotatable cores upon which web is to be Wound at a winding station, and axial driving means coacting directly with said cores for turning the latter to wind a running web thereon; the improvement comprising a controllably driven, webapplying, pull roller, located `between a related web supply and a new core located at said winding station, and yieldably in frictional driving engagement with a web on said new core to turn the latter to impart surface winding thereto supplemental to the driving effect of said axial driving means, a freely rotatable antislip roller, yieldably in engagement with a web portion on said pull roller at a circumferential point on the latter substantially removed from the point of driving engagement of the pull roller with the web on said core, and web cutting means, pivotally movable into a position adjacent to said new core, for severing web running from said winding station to a roll of web on a core at another station of the machine.
References Cited UNITED STATES PATENTS 2,256,082 9/ 1941 Feurt 242-56 2,586,832 2/ 1952 Kohler 242-56 2,787,427 4/ 1957 Marczincsin 242-56 2,955,773 10/1960 Burke 242-56.1 2,984,427 5/ 1961 Rockstrom 242-65 3,086,726 4/ 1963 Aaron 242-65 3,162,393 12/ 1964 De Gelleke 242-56 X 3,198,453 8/ 1965 Aaron 242-65 FRANK I. COHEN, Primary Examiner. G. F. MAUTZ, Assistant Examiner.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,345,009 October 3, 1967 Leonard Rockstrom It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 4, line 64, after "thereto." insert The wheel 13Zb drives still another endless chain Column 8, line 35, strike out "said web on a new core" and insert instead t a web on said new c :ore same Column 8, line 38, for
iyeldably" read yleldably Signed and sealed this 15th day of October 1968.
EDWARD J. BRENNER Edward M. Fletcher, Jr.
Commissioner of Patents Attesting Officer