US2141315A - Unwinder and winder mechanism for paper machinery - Google Patents

Description

Dec. 27, 193s.

`c. PQPUTNAM 2,141,315 A uNwINnER AND wINbEn MECHANISM FOR PAPER MACHINERY l FiledrSept. 27, 1934 9 Sheets-Sheet 1 Dec. 27, 1938. c P. PUTNAM g 2,141,315

I UNWNDER AND WINDER MECHANISM'FOR PAPER-MACHINERY l Filed sep'.` 27,1934 9 sheets-sheep 2 Dec .`27, 1938.A c. P. PUTNAM UNWND'ER- AND WINDER MECHANISM FR PAPER MACHINERY Filed Sept. 27, 1954 9` Sheets-Sheet 3 muuuuum- Dec. 27, 1938. l c. P. PUTNAM UNWIINDER AND W'INDER MECHANISM'FOR PAPER MACHINERY' Filed sept. 27, 1934 9 SheetsSheet 4 m Ly Dec. 27, 193sf l C. P. PUTNAM' UNWINDER AND wINDER4 MEcHANIsM FOR PAPER MACHINERY Filed sept. 27, 1934 9 sheets-sheet 5* Hm `NN www ww N P31. NNN .m3 .Y r www EN C, .3v w N mow/ eww gw .www mh @N .qw uw EN N R 3N mw IHHHHHUHH Dec. 27, 1938. .2,141,315

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' UNwINbEn AND wINDER MECHANI'SM Foa PAPER MACHINERY Filed Sept. 27, 1934 I 'sa` sheets-sheds -Patented Dec. 27,y 1938 UNWINDER'AND WINDER. MECHANISM FR PAPER MACHINERY Charles P. Putnam, Lockhaven, Pa., assignor to Beloit Iron Works, Beloit, Wis., a corporation of Wisconsin Application September 27, 1934, Serial No. 745,659

37 Claims.

This invention relates to unwlnding and winding mechanism, and has special reference to such mechanismdesigned particularly for use with paper machinery, though not` necessarily limited exclusively to such application.

In the operation of paper working machinery of the character used for making, treating, or finishing paper in which a continuous sheet o! paper must be rolled up as it comes from the machine or unrolled as it is fed to the machine, it has been customary to employ winding or unwinding mechanism, as the case may be, located adjacent the machine, the sheet being unsup- Among the more important objects of the in# l vention are the following:

(1) To eliminate the long draws to and from the paper working machinery, and to eliminate the breaks in the sheet resulting from such draws.

(2) To eliminate the dance rolls, spreaders, and similar devices for keeping the sheet taut and free from wrinklesin the draws and other associated mechanism.

(3) To increase the speed of operation of the paper` working machinery by increasing the rate at whichthe sheet may be fed to and removed from the machine.

(4) To provide better control over the hardness of the roll and the winding of the sheet.

' (5) To increase the ease of charging and discharging the rolls of paper.

(6) To eliminate the difficulty in synchronizing the speed of the Winder or unwinder with the speed ofthe paper working machine with which the Winder is used.

("1) To provide' a more compact machine occupying 'a minimum amount of oor space.

I have aimed to provide unwinding and winding means for supercalenders arranged to materially increase the operating speed oi the machine.

Another object of the-invention is to provide winding mechanism operated directly against the rolls of the machine with which they are employed', whereby the sheetv is supported against the surface oi .a roll at all times. thereby entirely eliminating the conventional draw and the objectionable features vassociated therewith.

A further object' of the inventionthe provision of winding mechanism wherein the roll of paper is driven directly by contact against the roll of the machine with which it isemployed.

I have also aimed to provide mechanism of the class described having improved means to regu Alate the pressure between the rolls during the handling of a roll of paper.

Another object of the invention is the provision of a supercalender having winding means operating in surface contactwith a calender roll at the oigoing end of the machine, and means for supporting a roll oi' paper at the opposite end of the machine in such proximity'to the adjacent roll as to eliminate or substantially eliminate the draw in the sheet.

Other objects and advantages will be apparent from the following description and the accompanying drawings, in which- I Figure 1 is a side view of a supercalender embodying my invention;

Fig. 2 is a face view of a Winder embodying my invention showing the lower end of a supercalender stack in section;

Fig. 3 is a section on the linel 3 3 of Fig. 2;

Fig. 4 is a section on the line l-l of Fig. 2;

Fig. 5 is a section similar to Fig. 4 showing the parts in a moved position;

` Fig. 6 is a side View of my unwind mechanism as applied to a supercalender showing a full roll of paper in the operative position; ,m

Fig. 7 is a view'similar to Fig. 6 showing the position of the parts when the roll of paper is completely unwound;

Fig. 8 is a view similar to Fig. 6 showing the roll supporting mechanism in a moved position in which the roll core is discharged;

Fig. 9 is a fragmentary view showing the roll carrying arms in the charging position;

Fig. 10 is a section on the line lli-I0 of Fig. 9;

Fig. 11 is a. section on the line Ii-II of Figure 1;

Fig. 12 is aback view oi one roll supportingl arm and the roll brake mechanism attached thereto, the brake and brake drum being shown in section;

Fig. 13 is a view similar to Fig. A12 showing the roll. supporting arm in the open position prein section,

the unwind mech- Fig.l 17 is a section through the means for.

longitudinally adjusting the roll carriers of the Winding mechanism;

Fig. 18 is an end view of the Winder mechanism showing pneumatic means for controlling the pressure between the rolls;

Fig. 19 is a diagrammatic view of the unwinding mechanism showing pneumatic means for controlling the pressure between the rolls and for controlling the brake action, and

Fig. -20 is an enlarged section showing clutch means for driving the air valves.

I have herein shown and described the invention as employed with a supercalender, in which it possibly nds its most important use, though it will be understood that such showing is by way of illustration and not limitation, and the invention contemplates use with a wide variety of paper working and similar machines. The super-calender herein shown is of the type having vertical frame members I5 and I6 and horizontal frame members I1 and I8. The calender has a lower roll I9 carried on the frame member I1, a plurality of intermediate rolls 2| carried on the frame members I5 lby means of arms 22 and an upper roll 23 carried on the frame members I5 by means of an arm 24. Vertical adjustment of the arms 24 is accomplished through screws 25 which also serve to adjust the position of pressure applying arms 26 positioned at oppositel ends of the rolls. Screws 21 pivotally carried on the frame members I8 are driven by means of a motor 28 and act against the arms 26 to drive the same downward against the pressure of springs 29 which bear against brackets 3| on the forward ends of the arms 24 to apply resilient pressure to the calender rolls. It is believed that the foregoing description of the supercalender will be sufficient for an understanding of the present invention, the supercalender per se forming no part of this invention.

Attention is first directed to the Winder portion of the device which is similar in many respects to the unwind portion and is the simpler of the two constructions. The winder contemplates broadly winding up the sheet of paper on a roll core directly as it comes from the lower calender roll, the roll of paper being wound having direct surface contact with the calender roll and being driven thereby. The structure contemplates means for rotatably supporting the roll of paper in this position and for subsequently moving the roll into a discharge position, together with means for discharging the roll from the winder in the discharge position. The mechanism also includes meansA for controlling the Y, pressure of the roll of paper against the calenderfroll so as to regulate the tightness with whichY the sheet is rolled, or, in other words,l the hardness of the roll of paper.

As will be seen from Fig'. 2,'a shaft designated generally by the numeral 33 extends transversely across the calender parallel to the lower roll I9 thereof, and has a central rectangular portion 34 and cylindrical portions 35 and 36 at its ends.

The cylindrical portion 35 is rotatably carried in an upwardly extending bracket 31 supported on a base 38 attached to one of the frame members I1, the bracket being held on the base by means of angle members 39 and 4I which form ways in which the bracket may swivel slightly relative to' block 38. The bracket also receives a pin 40 which extends upward from the frame member I1, through the base and into 4the bracket, the pin serving to position the bracket and permitting a certain amount of angular movement of the bracket inthe ways during lateral adjustment of the shaft, as will presently be described. The cylindrical portion 36 is carried in a bearing 42 attached to a base 43 by means of angle members 44 and 45 which form ways for the adjustment of the bearing laterally so as to adjust the alignment of the shaft 33 relative to the calender roll. Adjustment is accomplished by means of a screw 46 abutting at its ends against abutments 41 and 48, and having threaded engagement with the bearing 42 and carrying a nut 49 or other means for turning the screw. Positioned on the rectangular portion 34 of the shaft are sleeves 5I and 52 slidably receivedl on the shaft and carrying upwardly extending arms 53 and 54. On the outer end of the arms 53 and 54 are bearings 55 and 5,6, carrying stub shafts 51 and 58 for reception in the ends of a Winder core 59. Pins 60 on the shafts are received in slots 68a of the core to establish driving connection therebetween. Bands 60h of rubber or similar resilient material may encircle the shafts 51 and 58 for resilient contact with the calender roll though this is by no means essential. The winder core 59 is, therefore, rotatably carried on the arms 53 and 54 through the bearings 55 and 56, and is adapted to be driven by contact of the lower roll I9 of the calenderstack.

The winder core 59 is positioned on and removed from the shafts 51 and 58 by movement of the arms 53 and 54 toward and away from each other on the rectangular portion 34 of the shaft, the sleeves, 5I and 52 moving on the shaft to accomplish this purpose. lTo accomplish movement of the arms 53 and 54, internally threaded nuts 6I and 62 are positioned on the arms 53 and 54, respectively, and serve to receive a rod 63 threaded adjacent its opposite ends, as shown at 64 -and 65. The rod 63 has bearing support in a bearing 66 carried on the rectangular portion 34 of the shaft, which bearing also serves to take end thrust on the rod 63. The threaded portions 64 and 65 are so pitched that upon rotation of the rod 63 in one direction, the arms will move away from each other so as'to release the core 59, and upon rotation of the rod in the opposite direction, the arms will bebrought together for insertion of the core. Inf: this manner the arms are movable between an open and a closed position. To accomplish rotation of the rod 63, a motor 61 carries a gear 68 meshing with core or of the rll of paper thereon against the a gear 69 arranged to drive the rod through a' friction clutch 'II,'the clutch being arranged to `slip under excessive load such as results from the arms 53 and 54 reaching their closed position. The motor 61 is carried on a collar bracket 12 attached to the end of the shaft 33 by means of collar 13 keyed and clamped on the shaft. Likewise, the gear 69 is carried in a bearing 14 on a collar 15 keyed and clamped tothe shaft 33. On the opposite end of the rod 63 from the clutch 1I is a nut 16 adapted to contact the nut 6I of the arm 53 to prevent the arm from being run completely otI the rod.

The rotative movement of the shaft 33 is controlled through a gear segment 11 keyed tothe end 35 of the shaft and arranged to'mesh with a pinion 18 on a shaft carried in a bearing 19 on the upper end of the bracket 31. The opposite end of the shaft carries a gear 8I arranged to mesh with a pinion 82 carried on a shaft 83 supported in a bearing 88 on the bracket 31. The shaft 83 carries a wheel 84 for manual rotation thereof and a drum 85 over which a cable 88 is trained, the cable carrying suitablev weights 81. The cable 86 is shown in the drawings as being trained on the drum in a direction such that its weight tends to press the core against the bottom calender roll I9 but it may also be trained in the opposite direction to obtain a counterbalancing action when desired to produce the proper winding characteristic. The weight of the arms and of the core together with the remaining part of the mechanism carried on the lshaft 33 is such that,

it is not normally sufficient to give the desired pressure between the core and bottom calender roll I9 when starting. By varying the amount of ,complished by shifting the shaft 33 together with the elements carried thereon. A stud 88 (Fig. 17) is threaded and pinned into the end 35 of the shaft 33 and passes through a sleeve 88a.

Collars 88h and 88o retain the sleeve on the stud, the latter being capable of free rotation in the sleeve. The sleeve is threaded on the Aoutside as.`

shown at 88d for reception in a bracket 9| having an internally threaded opening, the bracket being split and provided with a bolt'92 to clamp the bracket onto the sleeve. The sleeve has a collar 89 with radial holes in it for rotation thereof in the bracket to move the shaft 33 endwise. The stud 88 is, however, rotatable independently of the sleeve with the shaft.

, 'I'he various steps in the operation of the device are graphically shown in part in Figs. 3-5, inclusive. When paper is to be wound onto the core 59, the parts are brought into theposition shown in Fig. 3 with the core held between the arms 53 and 54, and the core in contact with the lower calender roll I9. At this point if the lower calender roll and the core 59 are not in complete parallelism, the position of the bearing 42is adjusted through operation of the screw 46. When the core has 'been adjusted into parallelism with the roll and to a longitudinal position to properly receive the paper from the calenderl stack," the device is effective to roll the paper emerging from the calender directly onto the core 59, the core rotating through contact with the calender roll. As previously set forth, the weights 81, which may be variedat the will of the operator, serve to regulate the pressure of the roll of paper against the calender roll and thereby regulate the tightness or hardness of the paper roll. As the roll of paper becomes larger and larger, the parts move into the position shown in Fig. 4., When the paper roll has reached ,the desired size, the sheet of paper is severed and, through operation of the hand wheel 84, the arms 53 and 54, together with theroll of paper carried thereon, is moved to the position shown in Fig. 5, the roll of paper being deposited on a truck or similar transporting device located. in front of the Winder. 'Ihereupon the motor 81 is operated in a direction to move the arms 53 and 54 to their open position, discharging the roll from the Winder. Another core is then held in proper position and the motor 81l is operated in the opposite direction to bring the' arms to the closed position to charge the empty core. brings the parts into the position shown in Fig. 3 for thewinding of a further roll.

In Figs. 2-5, I have shown a form in which the weight 81 acts uniformly throughout its movement. In other words, the weighting effect of Operation of the hand wheel 84 again the weights 81 on the shaft 33 is uniform. This condition may be altered by manually changing the amount of the weights 81 during the winding of a roll, but I have provided remote control means for accomplishing this. A piston rod 81a (Fig. 18) is pivotally attached to the weight 81, and carries a piston 81h within a cylinder 81e having outlets 81d and 81e controlled by valves 813e and 81g and inlets 81h and 811 provided with vvalves 817' and 81k and a pressure gauge 81m for indicating the pressure on either side of the piston. The pistonis preferably pneumatcally operated and serves to either increase or decrease the tension on the cable 88 over that provided by the weight 81. The valves are arranged to be controlled by the operator from a point otherwise convenient in the operation of the machine and through the manipulation thereof he is enabled to change the pressure between the roll of paper and the calender rpll at will during the winding of a roll.

'I'he unwind mechanism operates on substantially the same principle as the winder mechanism just described, and includes a shaft 93 (Fig. 11)

of rectangular cross-section throughout a substantial portion of its length and havingspaced cylindrical portions 94 and 95, a central rectangu lar portion 98, rectangular portions 91 and 98, and cylindrical portions 99 and I8I. The cylindrical portions 99 and |8| at oposite ends of the shaft are carried in bearings |82 and |83 for rotation therein and for longitudinal movement of the shaft. The bearings I 82 and |83 are carried on plates |84 and |85 attached Vto the pressure applying arms 28 of the supercalender. The bearing I 82 is attached to the plate |84 by angle members |86 and |81 within which the bearing is movable to shift the shaft 93 laterally, movement of the bearing being brought about by means of a screw |88 threaded in the bearing and bearing vat its ends against abutments |89 and III, attached to plate |84, the screw having a nut@ I I2 or other means for manually rotating the `llsame. bearing |83 is fixed to the plate |85 by means of angle members II3 bolted thereto. The shaft 93 is adjustable longitudinally in order to'cause.

the paper to feed into the calender in the proper area between the lends of the calender roll. A stud |I4, (Fig. 15) is threaded and pinned into the end I8I of the shaft 93, the stud having a bead I |4a and a nut I I4b threaded and pinned thereon. An externally threaded sleeve |I,8 is positioned on the stud between the head and the nut and is threaded into a bearing member I5. The sleeve I I8 carries an internally splined member I I8a for cooperation with a toothed member IIIia driven from a motor -I I8 through a gear box ||6b. The motor and the bearing member I|5 are attached to a plate I I8 integral with the bearing |83, whereby these parts may turnA asa unit about a p-in ||1 extending between the plates |85 and |I8 upon lateral adjustment of the opposite end of the shaft 93. v

Thus the shaft is arranged for longitudinal The adjustment, and the bearing |02 is arranged for lateral adjustment to adjust the position of the shaft 93 with respect to the upper roll of the supercalender. Arms ||9 and |2| are integral with sleeves |22 and |23 carried on the rectangular portions 91 and 98 of the shaft, the sleeves -being movable longitudinally thereof.

Threaded nuts |24 and |25 are carried on thesleeves |22 and |23 and receive a rod |26 threaded at its ends as shown at |21 and |28 for reception in the nuts |24 and |25. A combined radial and thrust bearing |29 on the shaft 93 supports the rod |26 and prevents longitudinal movement' thereof. The rod |26 is driven from a motor |3| through gears |32 and |33 and a safety friction clutch |34, the motor I3| being operable in either direction to move the arms ||9 and |2| toward and away from each other selectively. The motor |3| and the gear |33 are carried on the ends of the shaft 96 by means of collars |35 and |36 keyed and clamped on the shaft. A nut |31 on the end of the rod |26 opposite the clutch serves to prevent the end of the rod |26 from being screwed completely out of the nut |25.

'Ihe outer ends of the arms ||9 and |2|carry bearings |38 and |39 such as shown in Fig. 10, each of the bearings having a shaft |4| provided on its outer end with a collar |42 forming a socket |43, the socket having a cross pin |44. The sockets |43 are adapted for the reception 'of the ends '|45 of spools designated generally by the numeral |46. Thus, through operation of the motor |3|, the arms ||9 and |2| are moved between a closed position as shown in Figs. 10 and 11 in which the ends |45 of the spool are received in the sockets of the shafts |4| and an open position in which the ends of the spool are free of the sockets. The ends of the spools have lugs |41 adapted to engage the pins |44 sol that the shafts |4| will be driven in their bearings in response to rotation of the spool. The arms ||9 and |2| thus serve to hold a roll of paper designated generally by the numeral |48 against the side of the upper calender roll |23 or in close proximity thereto so that `the sheet of paper 1S discharged directly from the roll |48 fonto the calender roll by contact of the two rolls or through a short draw as the operator may desire or conditions warrant and the opening and closing movement of the arms serve to charge the roll into the 4unwi'nding mechanism and discharge the spool.l It will also be apparent that the mechanism may be operated in such a way that theroll of paper does not actually contact the calender roll with appreciable pressure but occupies a position in close proximity thereto and is rotated by the direct pull on the sheet, which mode of operation will be desirable under certain circumstances. The' adjustment of the bearing |02 serves to bring the paper roll into proper alignment with the calender roll while the motor H6 and associated parts serve. to adjust the position of the roll of paper longitudinally with respect to the calender roll. p

`Brake means are provided to retard the rotation of the roll of paper so that the sheet ofl paper is unwound onto the calender' roll under the proper tension. This includes a sprocket wheel |49 carried on the shaft |4| as shown in Fig. 10 carrying 'a chain |50 which extends upward over a sprocket. wheel 5| carried on a brake shaft,|52. The brake shaft |52 is carried in bearings |53 and"|54, the bearing |53 being supported on the `rear side of the arm ||9 and-the bearing -I541vgbeing' supported on the shaft 96. Proper tension maintained in the chain |50 by means of a sprocket |55 on a shaft |56 adjustably supported in a slotted mounting |51 as best shown in Fig. 7. A brake part |58 is concentrically keyed to one end of the shaft |52 and has internal splines |59 upon which is carried a brake disk |6I, the disk being slidable on the splines. A stationary brake cylinder |62 is supported on a bracket |63 attached to the shaft 93 as shown in Fig. 14, the brake member having a flange |60 cored as shown at |64 for the circulation of cooling medium therethrough. The brake cylinder |62 is also splined on its outer surface to receive a brake ring |65 also c ored as shown at |66 for the circulation of the cooling medium, the ange |60 and the brake ring |66 being adapted to bear against opposed sides of the disk |6| to exert a braking action on the brake part |58. Braking pressure is'applied between the flange |60 and the ring |66 by means of a piston |61 positioned in the bore |68 of the brake cylinder |62, thepiston being attached to the brake ring |65 by means of bolts |69 which tend to draw the brake ring |65 toward the flange |60 when the piston is moved to the left facing Fig. 12 under hydraulic or pneumatic pressure applied within the cylinder |62, the uid being supplied through a pipe |62a. Springs |1| act between the flange |60 and the brake ring |65 to normally urge the brake ring away fromthe disk. Cooling liquid isl circulated through the flange and brake ring from pipes |64a. and |66a. Thus a braking action is applied to the spool |46, and consequently, to the paper roll |48 through this brake mechanism, the amount of the braking action depending upon the pressure in the cylinder |62 of the brake. The pressure in the cylinder |62 may be manually regulated or may be automatically controlled in response to the position of the roll carrying arms and the roll of paper.

Automatic regulation of the brake is accomplished by passing the supply of air thereto, which enters through pipe |62a through a pressure regulator |6212, similar to the regulator shown in Figp20, presently to be described, and having a hand wheel |62c carried on the stem of the regulator,v a friction disk |62d keyed on a shaft |62e and a spring |621l for maintaining the disk against the hand wheel, the hand wheel serving to manually adjust the regulator with respect to the shaft |62e. The latter shaft is driven from a shaft |621', on which sprockets |83 are carried, by means Aof beveled gears |629. A pressure gauge |62h gives visual indication of the air pressure on the brake. Thusthe shaftn |62e is turned as the roll of paper changes itsradius to progressively and automatically regulate the thereon.' Weights |16 are attached to the ends of the chains |12 to maintainvthe chains indriving engagement with the sprockets. A drum |11 is eccentrically fixed on the shaft |15 and has a cable |18 Wound thereon, the cable carrying weights |19, the weights being variable to vary the torque on the shaft |15. The drum V|11 is arranged with respect to the shaft |15 so as to counterbalance the effect of the change in the v size and position of the paper roll as the unwinding operation proceeds, or to impart other desired unwinding characteristics. The chains |12 serve to draw the paper roll against the calender roll and maintain the rolls in desired relative relation. It will be seen that by altering the size of the drum |11 and its eccentricity on the shaft |15, any desired measure relationship between the paper roll and the calender roll may be'had.

The invention also contemplates fluid means for automatically regulating the pressure between the rolls vin response to the position of the arms, pneumatic means being shown diagrammatically in Fig. 19. The drum |11 may be concentric on the shaft |15 or may be eccentric dependent upon the unwinding characteristics desired. In this instance I have shown the drum concentric. The shaft |15 is provided with a sprocket |17|a over which a chain |11b is trained to drive a sprocket |11c on a shaft |11d. The latter carries a beveled gear |11e cooperating with a bevel gear |11f on a vertical shaft Illy. The shaft |11g is connected to a pressure regulator |11h through clutch means shown in Fig. 20 including a hand wheel |111' carried on the stem of the regulator,

the -wheel having a hub faced for frictional engagement with a friction disk |111' keyed onV the shaft |11g for longitudinal movement with respect thereto. A spring |11Ic normally urges the friction disk against the hand wheel to cause the same' to be driven by the shaft |11g but permitting the regulator to be manually adjusted with respect to the shaft through the hand wheel |111'. The regulator controls the air pressure to a cylinder |11m, valved pipes |1111 permitting the air to 40 lectively to permit egress of air from either end of the piston. The piston |11q is pivotally attached to the bottom of weights |19 by means of a piston rod |11s and a connection |11t. Thus, .as the paper is unrolled and ythe roll of paper decreases in radius, the arms ||9 and |2| move in a counterclockwise direction causing rotation of the shaft |15 and sprocket 11a, which in turn causes alteration of the air pressure in the cylinder 11m, thereby increasing or decreasing the 5f', effect of the weights |19 on the roll of paper to alter the pressure between the rolls as desired in response to movement' of the -roll of paper.

|11, any ydesired unwinding characteristics may be obtained.

Referring now more particularly to the means for swinging the arms I9 and I2 and the paper roll |48 carried thereon, between the various rotative positions thereof involving the charging position in which the roll of paper is charged into the unwind mechanism, the unwinding position and the spool discharging position in which the spool is discharged from the arms, Fig. 6

shows the parts at the time when the unwinding j vof the paper roll has just begun, Fig. 7 shows the parts in the position occupied when the paperl is substantially entirely unwound. Fig. 8 shows the parts in a position to discharge the empty spool, and Fig. 9 ,shows the arms in the position to charge a fresh roll of paper.

Assuming the parts to .occupy the positions showing in Fig. '6 rotation of the arms is accomplished by means of chains |8| attached to the opposite sides of armsV I9 and I2| as 'shown at |82 and trained over sprockets |83, |84, |85, |86,

By, altering the size and eccentricity of the drum |81 and |88. Tighteners operate against the chains between the sprockets |84 and |85 and consist of brackets |89 on the frame members |8 upon which arms |9| are pivotally supported, as shown at |92, the arms carrying sprockets |93 adapted to engage the upper side of the chains |8| and carrying weights |94 adjustably positionedon the arms |9| to vary the weight on the chain. The sprockets |81 are carried on a shaft |95 extending transversely of the calenderv and driven by means of a motor |96. Weights |91 on the ends of the chains serve to maintain the chains in contact with the sprockets |81 and |88. It will be seen that whenthe motor is operated in one direction, the arms I9 and |2| are moved in a clockwise direction viewing Fig. 8, and when the motor is operated in the opposite direction, the arms are allowed to rotate in a counterclockwise direction into the position shown in Fig'. 6, this rotation of the-arms occurring 'under the weight of the parts and the action of the chains |12. When the roll of papercontacts the calender roll, continued operation of the motor |96 develops slack in the chains |8| which is taken up by the chain tighteners under the action of the weights |94. This slack permits of continued movement of the arms toward the calender roll as unwinding proceeds to maintain the roll of paper in surface contact therewith as the size vof the roll decreases during unwinding. The rolls of paper are charged into the roll carriers through roll lifting and positioning means which serves to bring a roll of paper into the chargingvposition and to maintain the roll in alignment for reception on the arms. This consists of means for lifting the roll and gauge means for guiding the roll into the charging position.

Gauge arms |98 and |99 (Figs. 8 and 11) are fxedly connected to a rpd 20|, and are pivotally Carried on the shaft 93 by means of bearings 202 and' 203. `The gauge arms have fingers 204 and 205 projecting laterally outward in a'position to be contacted by the arms |9 and |2 the ngers carrying adjusting screws 206 and 201 for contact with the arms ||9 and' |2| for a purpose which will presently appear. Lower position of vrthese gauge arms is determined by chains 208 and 209 carried on brackets 2|| and 2|2 on the frame members I8, the chains being connected to the fingers- 204 and 205 as shown in Fig. 11. Theouter ends of the gauge arms areeach provided with a slot 2|3 (Fig. 6) having tapered edges 2|4 (Fig. 10) for reception` in complementary shaped grooves 2|5 on the paper spool |46. A roll lifting device (Fig. 8) consists of a pair of side pieces 2|6 spaced for the reception of a roll 2|1 therebetween and connected at their ends as shown at 2|8, the transverse connecting member carrying an eyelet 2|9 adaptedto receive the hook of a hoist cable 22| for the purpose of hoisting the roll into position. Each of the side pieces 2| 6 are curved as shown at 222 to provide a cradle for the reception of the projecting end of the paper spool |46, the spool having anv annular. recess 223 for the reception thereof. '/,I'he lower ends of the'side pieces 2|6 each havev a hook 224 also adapted to be received in the recesses 223 of the A spool. The roll 2|1 is raised upward by the hoist lcable 22|' until the slots 2 3 of the gauge arms are received in the grooves 2|5 of the paper spool,

the guide arms with their slots and the complemental grooves on the spool serving to position the spool land associated roll in the charging position.

The operation of the unwind mechanism is a: 75

` for the reduction in size of the paper roll.

follows: Assuming the parts to be in the position shown in Fig. 6, the roll of paper |48 is pressed against the upper calender roll 23 by means oi the chains |12, the paper roll being driven by contact with the calender roll and the sheet of paper being transferred'froml the paper roll to the calender roll at the nip between these rolls. The speed of rotation of the paper roll is retarded by the action of the brake chain |50, the action of this chain and of the drum |11 and weight |19 regulating the tension of the paper sheet as it enters the calender. When the paper roll |48 has been completely unwound, the parts will have assumed the positions shown in Flg. 'I with the spool bearing directly against the calender roll, the arms ||9 and |2| having moved to compensate movement is permitted through the slack in the chains |8|, the tightener sprockets |93 maintaining the chain taut, and the tightener moving up- Ward with such movement of the arms. During the unwinding of the roll |48, the operator brings a fresh roll of paper into charging position in front of the machine.

When the paper is entirely unwound from the roll |48 and the parts reach the position shown in Fig. '1, the motor |98 is operated in a direction to draw the arms ||9 and |2| into the position shown in Fig. 8 with the recesses 223 of the spool abutting the end pieces 2|6 of the lifting device. The motor [3| is then operated to move the arms I9 and |2| to the open position, whereupon the empty spool is discharged into the hooked endsv 224 of the side' pieces 2li. 'I'he motor |96 is then again operated to draw the arms ||9 and |2| into the position shown in Fig. 9, that is, until the armsl ||9 and |2| abut the adjusting screws 206 and 201. The motor |98 is then stopped. The arms ||9 and |2| are then in a position for the ends |45 of the loaded spool to be received in the sockets |43 (Fig. 10). The motor |3| is then operated in the opposite direction to bring the roll carrying arms into the closed position engaging the ends of the spool. After this the roll-lifting device is lowered away from the roll, leaving the roll supported on the arms ||9 and |2|. The motor |96 is then operated to permit the roll to drop into the po'sition shown in Fig. 6 and is allowed to run a sumclently greater length of time to provide suitable slack in the l ain |8| so that the tighteners drop to the positio shown in Fig. 6. The sheet from the new roll of paper is then threaded through the calender and the calender is again brought into operation.

While the manifold advantages of my improved winding and unwinding mechanism will doubtless have become apparent, I desire to direct particular attention to a number of the more important features. 'Ihe long draws between the paper working machine and the winders or unwinders. which have heretofore been necessary. are entirely eliminated and the sheet is supported by a roll at al1 times while being transferred between the rolls of the paper working machine and the roll of paper. Because of the surface contact of the winding or unwinding rolls with the rolls of the paper machine, a considerable amount of" mechanism is eliminated. ForA instance. the

dance rolls are entirely eliminated as are the devices employed for maintaining uniformity in the tension between calenders and the like and the 'winding mechanism. Likewise, the dlmculty attending the synchronizing of the speed of the Winder and of the paper making or treating ma- This speed with which these operations may be accomplished. It will be seen that the roll may be discharged from the winder by a simple operation of the hand wheel 84, the wound roll being deposited directly `on a. 4truck or other means for conveying the roll. Likewise, the rolls are easily and quickly charged into the unwinding mechanism, and a second roll may be brought into its charging position while the rst roll is being unwound'so that the only time consumed in changing the roll is that required to move the arms between their various positions.

Means are provided which are automatically operable to control the pressure between the roll of paper and the calender roll and to vary the pressure accordingly to certain preconceived requirements. Control means serve to automatically regulate the braking action on the unwinding roll, in response to the decrease in size of the roll of paper.

I have shown and described a particular embodiment of the invention for purposes of illustration', but Iam aware that numerous alterations and changes may be made within the spirit of the invention, and do not wish to be limited except as required by the priorart and the scope of the appended claims, in which I claim:

1. In combination with a supercalender having upper and lower rolls, of winding and unwinding mechanism comprising rotatably supported frames adjacent said calender rolls, means on each of said frames for rotatably supporting a roll of paper in surfacel contact with the adjapaper into one of said frames to supply paper' to the supercalender, andvmeans to discharge the wound rolls of paper from the other frame.

2. The combination with a supercalender having upper and lower rolls, of winding and unwinding mechanism comprising rotatably supported frames adjacent said calender rolls, means on each of said frames for supporting a roll of paper for rotation in surface contact with the adjacent calender roll to transfer a paper sheet therebetween, means lfor regulating the pressure between said rolls of paper and said calender rolls, means for charging a roll of paper into one of said frames for passage through the supercalender and onto the roll of the other -of said frames, and means for discharging wound roll from the said otherl frame.

3. The combination with a supercalender having upper and lower calender rolls, of a pair of rotatably supported arms adjacent each of said calender rolls adapted to support rolls of paper at their ends in surface contact with said calender rolls to be driven thereby, means for Irotating said arms into'and out of operative position to bring said rolls of paper into and' out'of surface contact with said calender rolls, and

means for moving said arms to release saidrolls of paper when the arms are out of the operative the position whereby to charge a roll of paper into 75 one pair of said arms and-discharge a roll of paper. from the other pair of said arms.

4. The combination with a supercalender having upper and'lower rolls, of a pair of rotatably supported arms adjacent each of said calender rolls adapted to support rolls of paper .at their -ends in surface contact with said calender rolls to be driven thereby,l means for regulating the pressure between said rolls of paper and said calender rolls, and means for moving said arms to release said rolls of paper when said rolls of papergare out of contact with the calender rolls,

- whereby to charge a roll of paper into one pair of said arms and discharge a roll from the other pair of saidarms.

5. lThe combination with a supercalender having a pair of calender rolls, of winding and unwinding mechanism comprising rotatable arms adjacent said upper roll for holding a roll of paper to be run throu h the calender, rotatable arms adjacent the lower roll for holding a roll of paper emerging from the calender, said arms being arranged to hold the rolls ofV paper in surface contact with the calender rolls to be driven thereby, means to move the arms to a position with .the rolls of paper out of contact .with said calender rolls, and means for moving said armsto charge and discharge the rolls-of paper there from.

6. `'ll'he'conibination with a supercalender having a pair of calender rolls, of winding and unwinding mechanism comprising rotatable arms adjacent said upper roll for holding a roll of paper to be `run through the calender, rotatable arms adjacent the lower roll'for holding a rollof paper emerging from the calender, said armsfor the lower roll being arranged to hold the roll'of paper in surface contact with the calender roll to be driven thereby, means to move the arms to a position with the rolls of paper out of contact with said calender rolls, means for moving said arms to charge vand discharge the rolls of paper therefrom, and means for positioning a. roll of paper for reception on the arms adjacent the upper calender roll upon charging movement of of paper in surface contact with the adjacent calender roll, a roll discharging position and a roll charging position, means for positioning a roll of paper in a position t'obe charged into said frame in the charging position thereof and for receiving the roll discharged therefrom in the Adischarge position thereof, means to move said supporting means to discharge. and charge a roll of paper, and means -to discharge a roll of paper from said lower frame. `v

8. 'I'he combination -in a supercalender having upper and lower rolls, of'winding and unwinding mechanism comprising upper and lower frames rotatably supported adjacent said-rolls, means on each of said frames for rotatably supporting a roll of paper in surface contact with the adjacent calend'er-roll for the transfer of a sheet o f papery therebetween, means for rotating said upper frame between Vits position with `said,roll of paper in surface contact with the adjacent calender roll, a roll discharging position and a roll charging position for charging, unwinding and discharging a roll of paper, and means to discharge a wound roll of paper from said lower frame.

9. The combination in a supercalender having upper and lower rolls, of winding and unwinding mechanism comprising upper and lower frames.

rotatably supported -adjacent said rolls, means on'each of said frames for rotatably'supporting.

a'roll of paper in surface contact with the acl-v jacent calenderroll for the transfer of a sheet of paper therebetween, means for rotating said upper frame between its position with lsaidrolll of paper in surface contact with the adjacent calender roll, a roll discharging position and a roll charging position,means for positioning the roll of paper in a position to be charged into-said frame in the charging position thereof, means to move vsaid supporting means to discharge and charge of said roll, means o n the frame for supporting a roll of paper upon which a sheet of paper is being wound with the roll of paper in-surface contact with said calender roll, manually operable means `for moving the frame and the roll of paper to discharge position remote from the calender-roll, and motor driven means carried on the frame for discharging said roll of paper and forcharging 4a core upon which a subsequent roll is to `be wound.

11. The combination with asupercalender having a calender` roll of winding mechanism comprising a frame rotatably positioned alongone side of said roll, means ontheframe for supporting a roll of paperl upon which a sheet of paper is being wound. with the roll of paper in surface contact with said ycalender roll, manually operable means for moving the frame and the roll of paper roll, motor driven means carried on the frame for discharging said roll of paper and for charging a core upon which a subsequent roll is. to be wound, and manually variablaweights. arranged to act on said manually operable means to control thepressure between the roll of paper and the calenderroll and thereby/'determine the tension.`

. to a4 discharge position remote from the calender said roll of paperin surface contact with said paper working roll to transfer the sheet of paper `between the rolls in the area4 of contact, the

roll of paper being driven through said contact means for automatically and progressively varying the effect of the -weights upon the roll during the chine having a paper working roll ofunwinding mechanism comprising a shaft. located to one Side of the vertical center line of s'aid roll, a pair -of depending arms on said shaft'for supporting a roll of paper to be fed to said machine, weights l .arranged to urge the roll of paper into surface contact with the paper working roll to transfer a sheet of paper from the roll o'f paper to the paper working roll in the area of contact, means for automatically and progressively varying thev effect of the weights upon the roll of paper to regulate the -pressure between the roll of paper and the paper working roll, and brake means acting on the roll of paper to `retard the rotation thereof.

14. The combination with a paper Working machinehaving a paper working roll of unwinding mechanism comprising roll carriers located adjacent the ends of said paper working roll arranged to support a spool of paper in surface contact with said paper working roll to -transfer a sheet of paper from the spool of paper to the paper working roll in the area of contact, means lare moved toward each other.

15. In a paper working machine having a paper working roll, and. means for supporting a roll of paper in surface contact therewith for feeding paper to said paper working `roll, the combination therewith of pneumatic means automatically operable in response'to a change in size of said roll of paper to control the pressure between said rolls.

16. AIn a paper working machine having a paper Vworking roll, and means for supporting a roll of paper in surface contact therewith for feeding paper to said paper working roll, the combination therewith of weight means for moving the roll of paper toward the roll of said machine to apply v pressure between said rolls, and pneumatic means response to a change in size of said roll to vary.

operable in response to a change in the size of said roll of paper to progressively control the pressure between the rolls during the feeding of a roll of paper.

17. In a paper working machine having a paper Working roll, and means for supporting a roll of paper in surface contact therewith for feeding paper to said paper working roll, the combination therewith of weight means for moving the roll of paper toward the roll of said machine to apply,

pressure between said rolls, a pneumatic piston operable on the weight means, -means driven in the pressure on said piston to control the pressure between said rolls, and means to vary the pressure on said piston independently of the size of said roll of paper.

18. In a paper working machine' having a paper working roll, and means f or supporting a roll of paper in surface contact therewith for feeding paper to said paper working roll, the combination ltherewith of weight means for moving lthe roll of paper toward the roll of said machine to apply pressure between said rolls, and means acting on said weight selectively operable to increase or decrease-the effective weight thereof. I

19. In a paper working machine having a paper working roll, and means for supporting a roll of paper in surface contact therewith foie-feeding paper to saidpaper Working roll, the combination the effective weight thereof, and means responsive to a change in size of said roll of paper to progressively change the amount of said increase or decrease.

20. In a paper calender having a paper working roll, and means for supporting a roll of paper in surface contact therewith for feeding paperl to said roll, the combination therewith of brake means for retarding the rotation of said roll of paper to control the tension of the paper, and pneumatic means for controlling the brake, automatically operable in response to movement of said supporting meansto progressively decrease the effect of the brake on the roll of paper.V

21. The combination in a supercalender having upper and lower rolls, of winding and unwindlng mechanism, comprising rotatably supported frames adjacent said calender rolls, means on each of said frames for rotatably supporting a roll of paper adjacent said rollfor transfer of a paper sheet therebetween, means for providing a vpredetermined ,surface pressure between one of said rolls of paper and the lower calender roll, means for charging a roll of paper into one of said frames to supply paper to the supercalender, and means to discharge the wound rolls of paper from the other frame.

22. The combination with a supercalender having upper and lower calender rolls, of a pair of rotatably supported arms adjacent each of said calender rolls adapted to support rolls of paper at their ends adjacent said calender rolls to be l driven thereby, means for rotating said arms into and out of operative position to bring said roll of paper into and out of winding and unwindlng relation with said calender roll, and means for 4 moving said arms to release said rolls of paper when the arms are out of the operative position whereby to charge a roll of paper into one pair of said arms and discharge a roll of paper from the other pair of said arms.

23. The combination with a supercalender having upper and lower calender rdlls, of winding and unwinding mechanism comprising rotatable unwindlng arms adjacent said upper roll for holding a roll of paper to be run through the calender, rotatable winding arms adjacent the lower roll for holding a roll of paper emerging from the calender, said winding arms being arranged to hold the roll of paper in surface contact with the calender roll to be driven thereby, means to move the winding arms to a position with the roll of paper out of contact with said calender roll, and means for moving said winding and said unwinding varms to charge and discharge the roll of paper therefrom.

24. 'I'he'combination with a supercalender having upper and lower calender rolls, of winding and unwindlng mechanism, comprising rotatable unwindlng arms adjacent said upper roll for holding a roll of paper to be run through the calender, rotatable winding arms adjacent the lower roll for holding a roll of paper emerging from the calender, said winding arms being arranged to hold the roll of paper in surface contact with the calender roll, means to move the winding arms to a position with the roll of paper out of contact with, said calender roll, means for moving said winding and unwindlng arms to charge and dis-- charge the roll of paper therefrom, and means for positioning a roll of paper for reception on the unwindlng arms upon charging movement thereof.

25. The combination in a supercalender having upper and lower calender rolls, of winding and f lreceiving the roll discharged therefrom in thedischarge position thereof, means to move said supporting means to discharge and charge a roll of paper. and means to discharge a roll of paper from said lower frame.

26. The combination in a supercalender having upper and lower calender rolls, of winding and unwinding mechanism comprising upper and lower frames rotatably supported adjacent said rolls, means on each of said frames for rotatably supporting a roll of paper adjacent said calender roll for the transfer of a sheet of paper therebetween, means for rotating said upper frame between its position adjacent the calender roll, a roll discharging position and a roll charging position for unwinding, discharging and charging a roll of paper, -and means to discharge a wound roll of paper from said lower frame.

27. The combination in a supercalender having a calender roll, of unwinding mechanism comprising a shaft positioned to one Aside of the vertical center line of said calender roll, a pair of depending arms on said shaft for supporting a roll of paper to be fed to said machine, weights arranged to urge the roll of paper toward the calender roll to an unwinding position for' the transfer of the sheet of paper between the rolls, means -for automatically and progressively varying the effect of the weights upon the roll during the unwinding of the roll, and brake means acting on the roll of paper to retard the rotation thereof.

28. The combination with a supercalender hav` ing a calender roll of unwinding mechanism comprising roll carriers located adjacent the ends of said calender roll arranged to support a spool of paper in an unwinding position adjacent said calender roll to transfer a sheet of paper from the spool to the calender roll, means for rotating said roll carriers to transport said spool of paper to a point remote froml said calender roll, means for moving said roll of carriers toward and away from .each other to discharge an empty spool and to charge a subsequent spool of' paper, and

guide means to predetermine the position of said subsequent spool of paper for reception on said roll carriers when the carriers are moved toward 'each other.

29. 'I'he combination with a supercalender, of means for feeding paper thereto, lcomprising a frame located adjacent the upper roll thereof adapted' to rotatably support a roll of paper adjacent the upper roll of said machine for the trans` adapted .to rotatably support a roll of paper adjacent the upper roll thereof for the transfer of paper sheet therebetween, said frame having a pair of supporting arms movable toward and away from each other-to receive and discharge a paper roll, weight means for urging said frame in one direction, power means for moving the frame in the opposite direction from an unwinding position adjacent the roll of said machine to an unloading position and thence to a loading position, a loading frame having spaced side arms vproviding roii and spool sockets, said loading frame being adapted to be lifted to a charging pcsitiommeans on said frame for locating said loading frame to predetermine the charging position thereof, and means for moving the support'- ing arms away from each other in the discharging position thereof to deposit the empty spool in said spool socket and moving said arms toward each other in the charging position thereof to receive a roll from said roll socket.

'31. The combination with a supercalender of means for feeding paper thereto, comprising a frame adapted to rotatably support a roll of paper adjacent the upper roll of said machine for the transfer of paper sheet therebetween, said frame having a pair of supporting arms movable toward and awayfrom each other to receive and discharge the paper roll, spindles on said arms to support the roll of paper thereon, a prime mover carried on said frame for moving said arms, power operated means for adjusting the longitudinal position of said frame to predetermine the area in which the sheet enters the calender roll, a brake carried on said frame and movable therewith, and means for transmitting the braking action thereof to one of said spindles to retard the rotation of said roll of paper.

32. 'Ihe combination with a caiendering machine, of means for supporting a roll of paper ln surface contact withan operation roll of said machine to transfer paper therebetween, fluid brake means for retarding the rotation of said roll of paper, and means for controlling the supply of uid to said brake means in response to change in the diameter of the paper roll to regulate the tension on the paper.

33; The combination with 'a caiendering machine, of means for supporting a roll of paper in surface contact with an operation roll of said machine to transfer the sheet of paper therebetween, fluidl operated means for exerting pressure between said operation roll and said roll of paper to regulate the tension on the pape and means automatically responsive to the change in diameter of said roll to control. said last mentioned means. f.

34. The combination with a caiendering machine, of a winder comprising a frame rotatably supported adjacent an operation roll of said machine and to one side thereof, means on the frame for rotatably supporting a roll of paper at its ends in contact with said machine roll and in a position to receive the paper therefrom and he .driven thereby, the weight of said means and said frame being disposed to apply pressure between the roll of paper and said machine roll, and a pneumatic piston selectively operable on said frame to counterbalance the weight of said supporting means, said frame, and said roll of paper or add to the effective weight thereofto produce any desired pressure between the roll of paper and the machine roll to regulate the tightness of the paper being wound.

35. The combination with a supercalender having a caiendering roll of unwinding mechau nism comprising roll carriers loc'ated adjacent the ends of said calendering roll arranged to support a spool of paper adjacent said calendering roll to transfer a sheet of paper from the spool of paper to the paper working roll, means for supporting said roll carriers, motor driven means for adjusting the longitudinal position oi the last mentioned means with respect t-o said calendering rolls, motor driven means for rotating said roll carriers to transport said spool of paper to a point remote from said paper working roll, and motor driven means for moving said roll carriers toward and away from each other to discharge an emptyspool and to charge asubsequent spool of paper.

36. The combination in a calender having a calendering roll of unwinding mechanism comprising roll carriers arranged to support a spool of paper adjacent said calendering roll to feed 29 said paper to the calender. a uid brake for controlling the rotation of said spool, valve means y for controlling the supply of uid to the brake,

means for operating said valve in response t0 changes in position of said roll carriers toprogressively adjust the operation of the brake through a cycle, and manually operable means to 'operate said valve to change the cycle.

37, The combination in a calender of unwinding mechanism comprising depending arms for supporting a roll of paper to be fed to said calender, iiexible means attached to opposite sides l0 of said arms to move the latter between an operative position adjacent a calender roll and a discharge position remote therefrom, a motor for driving one of said flexible means to move said arms tp said discharge position, and weight 15 means for driving the other of said flexible means to move said arms to the operative position.

CHARLES P. PUTNAM.

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