US1268134A - Web-feeding mechanism. - Google Patents

Description

B. C. WHITE.

WEB FEEDING MECHANISM.

APPLICATION FILED AUG.9.1912- Patented June 4, 1918.

5 SHEETS-SHEET I.

B. 0. WHITE. WEB FEEDING MECHANISM. APPLICATION HLED AUG.9. I912- 1,268,134, v I 1 5SII-IEETSSHEETZ.

- Patented June 4, 1918.

B (2. WHITE. WEB FEEDING MECHANiSM. APPLICATION FILED AUG-9. IBIZ- Patented June 4, 1918.

5 SHEEJS-SHEET a.

1,268,13&

B. C. WHITE.

WEB FEEDING MECHANISM. APPLICATION FILED AUG.9. 19:2.

Patented June 4, 1918.

5 SHEETS-SHEET 4- B. C. WHITE.

WEB FEEDING MECHANISM.

APPLICATION FILED AUG.9. 1912.

1918. 5 SHEETS-SHEET 5- Patented June 4,

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WEB-FEEDING- MECHANISM.

-To all whom it may concern:

Be it knownthat I, Barron CLARK Wnrrn,

a. citizen of the United States, residing at Woonsocket, county of Providence, and State of Rhode Island, have invented certain new and useful Improvements in Web-Feed- .ing Mechanisms, fully described and represented in the following specification and the accompanying drawmgs, forming a part of the same. This invention. relates to web feeding mechanismsfor machines which derive their web supply from rolls, the mechanism bein connecting the web of an expiring roll of paper to the web of afresh roll without stopping the press, whereby the web supply may be continuous and uninterrupted,- and particularly to provide a simple and efli- ,cient mechanism for this p'urpqse, in which the web roll remains in its original position during the web connection and until the roll is exhausted, the fresh roll being placed alternately in one or the other of two sets of rroll bearings.

A further object. of the invention is a;

provide mechanism for rotating paper rolls, whereby the peripheral speed of a fresh roll may be brought to correspond exactly with nected in turn to another fresh roll, and this roll rotating mechanism is applicable also for feeding paper" webs from rolls in web feeding mechanisms other than web roll renewers. Other objects of the invention are to provide an automatlc adjustment of the web tension in feedin from rolls, variable with the momentum o the roll, to automatlcally check the tendency of the roll to run ahead and slacken the web in case the press is suddenly stopped, and to prevent excess tension on the web when the "press is again Specification of Letters Patent. Application filed August a, 1912. Serial 1%. 114,161.

.a compact, simple and convenient orm.

Patented June d, 191%.

p In the accompanying drawings illustrative I pf the preferred embodiment of my invenlon- Figure 1 is a sectional view on line 11 of Fig. 3, showing the right-hand roll nearly expired and the fresh roll in the left-hand position with the pasting-rolls in position to connect the webs;

Fig. 2 is similar to Fig. 1 except that the rolls are in the opposite positions;

Fig. 3 is a transverse vertical section on line 3-3 of Fig. 4;

Fig. 4 is a horizontal section on line 4-4 of Fi 1, showing the expansion drums and belts in plan view;

Fig. 5 is a side elevation;

Fig. 6 is an enlarged detail of the cut ofi knife and its connections;

Fig. 7 is a sectional view of same taken on line 7-7 of Fig. 6,;

Fig. 8 is a longitudinal sectional view of one of the expansion drums along parts of the line 8-8 of Fig. 4, showing the bearings and drivin connections for same; 1 Fig. 9 is a ongitudinal section on line 99 of==Fig. 10, showing the expansion drum;

Fig. 10 is a transverse section of the expansion drum on line 10-10 of Fig. 9;

Fig. 11 is a perspective detail view of one of the pins in the drum spiders; the lineal speed of the web from the roll in Fig. 12 is an enlarged detail of the clutch handle and adjustment wheel on the expansion drum shaft, being a horizontal section on line 12-12 of Figs. 8 and 13";

Fig. 13 is another detail sectional view of the same on line 13-13 of Fig. 12;

Fig. 14 is a detail sectional view of the lower end of the clutch lever along a part of the line 1414 of Fi 12" With Fig. 15 is a horizonta section of the belt.

tension brackets on line 15-15 of Fig. '16; Fig. 16 is a tranverse section. of the same on line 16-16 of Fig. 15-; Fig. 17 is a detail of the cross-wise adjustment of the roll, showing the roll bearings, being taken on line- 17-17 of Fig. I

18; and

Fig. 18 is a transverse section of the same and as an expiring roll in Fig. 2, 6, 6 are the'roll shafts, centered and secured to the rolls by cones 7 7 in the usual manner.

Upon one end of each of the shafts 6,. 6 is.

mned a collar 8, see Figs. 17 and 18. Bear mg blocks 9, 9 are fitted to slide in rectangular recesses 10, 10 and are movable therein by means ofthe screw 11, the threaded portion of which engages the bearing block -9 through the lug 12. A hand-wheel 13 operates the screw which is j ournaled at its other end in the frame 2 at 14. A suitable recess 15 is provided for the collar 8 in the hearing 9 whereby the movement of either of the bearing blocks 9' will be imparted to the roll of paper supported therein, thereby adjusting its position laterally as desired.

. Between the two rolls of paper and above their centers are two guide rollers 16 and 17 extending across the machine parallel with the paper roll shafts 6, 6. These guide rolls are mounted upon swinging arms 18 and 19 which latter are pivoted 'at their lower ends to the frames 2 and 3 at 20. The arms 18 are so disposed that the roller 16 may swing obliquely through an arc approximate y parallel to theperiphery of the roll 5, see Fig. 1. The arms 19 are similarly disposed to move the roller 17 in an, arc approximately parallel to the periphery of roll 4, see Fig. 2. Links 21, 21 connect the arms 18 and 19 to the levers 22, 22, which latter are rigidly secured to the rock-shaft 2a.

The rock-shaft is operated by a hand lever 24 secured thereto. A latch 25 upon said lever, having a. hook 26, engages notches in a quadrant 27 whereby the lever and consequently the rollers 16 and17 may be locked in any desired position.

The web w or y from the respective rolls 4, 5, whichever maybe in use, passes between the guide rollers 16 and 17, as shown in Figs. 1 and 2. Assuming that roll 4 is expiring, the flap end of the fresh roll of paper 5 having been lightly pasted down to its body and having had a stronger adhesive applied to the outer surface of the flap end and the fresh roll having been rotated. until its peripheral speed corresponds with that of the'web a; the connecting of the webs may now be accomplished." The operator grasps the handle 24, lifts the latch 25 by means of the hook 26,.swin the handle to the left and-brings the gui e roller 17 downward,

'to the left,

thereby making contact between the running web a: and'the pasted. outer surface of the flap-end of the paper roll 5 to which the web attaches, as shown in Fi 1 and 5.. The adhesion between the we the fresh roll being greater than that of the end of .the fresh roll to its body, the latter connection is severed and the web from the fresh roll accompanies the web from the exiring roll, which latter may now be severed. The guide roller 17 may now be withdrawn from contact with the r0115 by moving the hand lever'to the right. A notch in the quadrant permits the hand. lever to be locked in this latter position while the fresh roll 5, which has now become the roll in use, is being exhausted. 'When the latter is near its expiration its web is connected to a fresh. roll in the opposite position as before, as shown in Fig. 2, thus supplying the .Web to the printing press alternately from a right hand and a left hand roll with a continuous web which passes continuously between the guide rollers and is alternately deflected by the rollers to a fresh roll intro duced in one or the other of the roll positions.'\

.7 To eifectthe web connection it will be apparent that a short amount of extra web must be supplied from the expiring roll to and the end of 6 erably by a swingin knife holder 29 moimted to hang freely in earings in knife frames 30 and havin a serrated edged knife 31 secured to the ower edge of the knife holder.

The shaft 32 of the knife holder 29 extends through and beyond the knife frame 30 and is provided with an upwardly extending arm 33 to which is attached a cord 34 extending through an eye 35 in arm 22, thence to the upper end of the hand lever 24 .for convenient operation. The operator, having pulled the hand lever 24 to the left and having connected the webs, promptly pulls the-cord 34""which swings the knife" 29 upward and to the right and into the path of'the web a, thus severin it.. Should the expiring roll be at the Ie the hand lever 24 would be inclined to the right and the knife blade would be swung upward and The knife swings back each time to the position shown in full lines in Fig. 6 by the action of avity.

The parts so far descri ed are so arranged as not to interfere with the removal ofa spent roll or the introduction of a fresh roll into the place thus vacated.

Beneath each roll of paper and arranged arallel to the axis thereof is a drum 36. rained about these drums and about tension idler pulleys 37, 37 are short belts 38,

' 38. A swinging frame 39 journaled upon mounted upon it brackets 42, 42, which carry the idler pulleys 37, 37. Each of these brackets is provided with an adjusting screw 43 whereby the shaft 44 of the idler pulley 37 may be moved to adjust the tension of the belt 38. The brackets may be secured to the swinging frame 39 in any lateral position desired. Tensions rings 45 are connected -at their lower en s to the swinging frame 39 by pins 46 and at their upper ends they are connected to the frames 2 and 3 by pins 47. Threaded rods 48 pass through the pins 47 and are provided with nuts whereby the tension of the springs may be adjusted as desired.

The belts 38 engage the underside of the. fresh roll at points where no paste has been applied. The belts, swinging frame and points of spring connection are all so arranged that the springs will act to press the belts 38 against the underside of the roll of paper with their maximum tension and leverage when the diameter of the roll is greatest and consequently when its weight, inertia and momentum are greatest. At this time, as shown in Figs-1 and 2, the springs are acting at their most advantageous angle and the contact point of the paper roll upon the belt is about midway of the distance between .the drum 36 and the idler 37. As the roll of paper decreases in diameter and, therefore, decreases in weight and momentum proportionately to the square of its diameter, it is desirable to decrease the pressure of the belts 38 and consequently the retarding or controlling frictional resistance thereof in the same proportion. This is accomplished by the shortening and weakening of the springs as theframe 39 rises, due to the decreasing rolldiameter. In. addition to this the point of contact of the paper roll with the belt 38 is moving outward toward in diameter. A further decrease in the pressure is effected bythe change occurring in the angle ofthe spring action, which becomes more obtuse and lessefiective as the roll diminishes in diameter.

It has been demonstrated that a retarding pressure suflicient to control a full roll at full speed would be excessive when the roll is reduced to near its expiring point, while a suitable retarding pressure for the latter condition would be wholly ineffective for the former.

The drums 36 are driven by intermeshing gears 49,- one of which-intermeshes with a.

' tains the ring 61 in place. the idler pulley as the paper roll decreases pinion 50, which latter is keyed to the driving shaft 51. The driving shaft 51 is aractly with the rotation of the printing elements of the printing press. the inwardly projecting bushings 40, 41 has The gears 49 are not secured directly to the drum shafts 53 but are mounted to rotate freely upon the bushings 40. The latter are clamped fixedly in the pedestals 54, see Fig. 8, and form journals for the swinging arms 39, the drum shafts 53 and the gears 49. The bushings 41 form journal bearings for the other end of the ,drum shafts 53 and for the opposite ends of the swinging arms 39.

Keyed to the drumshaft 53, although free to slide endwise thereon, is the sliding member 55 of a cone friction clutch, the other member being the gear'49. As these parts are in duplicate the description .will be limited to one of them. A handle 56 is forked at its lower end and isfulcrumed in.

projecting cars 57 upon pins .58 of the thrust block 59. The latter is bolted to the bed-plate 1 by screws 60. formed upon a rin 61 fit into recesses in the forked lever 56. 1 a latch and pawl63 (see Fig. 3) which engages-teeth upon thequadrant 64 in such manner as to lock the lever in any desired position. These'parts are so arranged that the operator may cause the gear 49 to frictionally engage the clutch 55 by shifting the lever 56,v thereb transmitting rotation to o the shaft 53, the rum 36, be1ts' 38 and finally to the roll of paper upon the belts. This frictional engagement may be as gradual and gentle 'as desired. After the roll of paper has attained full speed, the lever 56 may be locked, thus maintaining the parts in full operative engagement, wherebythe paper roll will be driven at the full speed of the printing ress.

. I preferab y introduce an antifriction thrust collar 65 between the ring 61 and the sliding member 55, also one 66 between the nut 67 .re-

gear 49 and the pedestal 54. The drum shaft 53 has-mounted upon it spiders 68, 68; these are keyed to the shaft by keys 69 and are held from endwise move-.

ment thereonby setscrews 70. A description of one-spider will'suflice. It comprises ra dial arms 71-which are each fitted between lugs 72 formed upon the inside of the shell sections 73 of the drum, thus maintaining each shell section in proper alinement and angular position and o utof contact with the adjacent sections, while leaving it free to move radially or endwise in relation to the spider. Angular slots 74 are formed in each arm of the spider. Pins75 (see Fig. 11') are fitted snugly in transverse holes through.

Trunnions .62

is lever is provided withits ' bear.

the lugs 72 of the several shell sections. These pins are flattened in their middle portion to slide endwise in the angular slots 74 of the spider arms whereby the endwise movement of the spiders will cause the va-' rious shell segments to move radially toward or away from the drum shaft 53, thus enlarging or contracting the drum uniformly throughout its length. -The segments forming the drum shell are prevented from endwise movement by means of the flanged sleeves 76, between the flanges of which the drum segments are freely fitted.

The flanged sleeves are fitted to permit the drum shaft to slide freely through them. I preferably introduce antifriction thrust collars 7 7 between the sleeves and the inside surfaces of the frame against which they The drum shaft 53 is recessed at its end and is fitted with a flanged bushing 78 securely pinned in place (see Fig. 12). A

" thrust collar 79 turns freely in the annular engage an adjusting screw 82 actuated by a hand-wheel 83. The split nut engages guide surfaces 84 formed .in the thrust block 59. The adjusting screw 82 is also journaled in this-block. These parts are so fitted that by the rotation of the hand-wheel 83 the drum shaft is moved endwise .and thereby expands or contracts the drum 36, thus in-' creasing or decreasing the speed of the belts 38 in relation tothe speed of the web of paper as it is consumed by the printing press,

thereby maintaining the proper tension on the web between the paper roll and the printing roll as desired. While the drawings illustrate independent adjusting means for each drum they preferably are cross-connected, as by sprocket wheels and a-chain 100, as shown, and both may be operated by a single handwheel, which may be placed at the web feeding machine, as shown, or may be at the printing press, or both. Similarly, the margin adjustment of the paper rolls by hand wheels 13 may be controlled by suitable connections at any convenient 'point of the press.

When the expiring roll has become small and has but slight momentum, the friction clutch, which drives it, may be opened, in which case the expiring roll is no longer in Fig. .1, thereby stretching the springs 45.

The fresh rolls vary somewhat in diameter. This variation changes their weight proportionately, thus the larger 'rolls would further depress the swinging arms with a resultant increase in spring tension and in belt pressure. The swinging arms may be instantly locked down, thus placing belts 38 out of engagement with the paper rolls should it become necessary, through accident or for any other reason, to resort to hand pasting. In the case of short rolls a .single belt 38 would suflice. The spring adjustment would be changed or a single springwould be employed.

While the roll .driving devices employed are not essential to the invention, broadly considered, certain important results are thus secured, of which may be mentioned the following:

On account of the exact conformity of speeds of the peripheries of the two rolls of paper, together with the facility afforded for effecting the web pasting, it is not necessary to stop the rinting press to change rolls, but this may e done at relatively high speeds. The necessity for an auxiliary web tension device is'obviated as the functions of such a device are performed by the above described mechanisms acting upon the paper roll. Brakes for the paper roll are not required with this device as the necessary control of the roll and of the web tension is provided by the belts and the variable diameter of the drums. Should the printing press be stopped or slowed down or be speeded up while the fresh rollis bein speeded up or at the time the running we is bein attached to the fresh roll, it Wlll not affect t e proper functioning of the mechanism as the rotation of the rolls is controlled directly from theJprinting press or from the source of power thereof.

Numerous modifications maybe made in the mechanism employed without departingfrom the principles of my invention.

What I 'claim is z- 1. The combination with two sets of web roll bearings, of web guiding devices, and

means for moving the webdguiding devices.

in one direction "toward an against a web roll in one set of hearings to carry a running web against said roll, and then m the opposite direction toward and against a wet aaea sa roll'in the other set of bearings to carry a running web against said roll for web renewal.

2. The combination with two sets of web roll bearings, of a pair of web gu1de rollers,

and means for moving the web guide rollersing the web guide rollers in onedirection to bring one of them toward and against a web roll in one set ofbearings to carry a running web against said roll, and then in the opposite direction to bring the other of the uide rollers toward andagainst a web roll 1n the other set of bearings to carry a running web against said roll for web renewal.-

4. In a web feeding mechanism, the combination with a set of web roll bearin s. for supporting a partially exhausted we roll from which the web is being unwound, a

pair of guide rollers between which the web passes, a set of bearings for supporting a fresh web roll, means for moving one of the pair of guide rollers to bring the unwinding web into contact with the fresh web roll for securing the unwinding web to the end of the fresh roll' means for unwindin the fresh roll until it is nearly exhauste and means for movin the other of the pair of guide rollers to ring the unwinding web into contact with another fresh roll.-

5. In a web feedin mechanism, the combination witha set 0 web roll bearings for supporting a partially exhausted web roll from which theweb is being unwound, a

pair of guide rollers between which the web passes, a second set of web roll bearings for supportin a fresh web roll, means for mov-. ing one o the pair of guide rollers to bring the web into contact with the fresh roll to attach the web to the end of the fresh roll,

means for discontinuing the web from the partly exhausted roll, means for unwindin the fresh roll untilit is nearly exhauste and means for moving the other of the pair of guide rollers to bring the unwinding web into contact with another fresh roll.

6; In a. webfeeding mechanism having bearings for two rolls of paper arranged for web supply from either roll, the combination of separate means for rotating each of said rolls each of saidmeans comprising a belt in contact with the periphery of the roll, a pulley for driving said belt, and an idle pulley for said belt, said idle pulley being movable to maintain contact between said belt and the periphery of said roll of paper as the latter diminishes in diameter.

7. In a web feeding mechanism, the combination of fixed hearings in which a fresh web roll is supported, means for rotating said fresh roll through contact with its periphery, a set of hearings in which a web roll is supported from which the web is being unwound,'means for rotating said unwindingroll through contact with its per'iphery, and means for connecting the run- 1 ning web from the unwinding roll to the end of the web of the fresh roll as it'rotates.

8. In a web feeding mechanism, the combination with fixed bearings for supporting a fresh web roll of paper and an unwinding roll, and means for rotating both rolls by peripheral contact through a train of gearing from the source of power which actu'ates the web consuming device wherehy' the peripheral speed of both rolls will correspond with the web speed required by the web consuming device.

9. In a web feeding mechanism, the combination of a driving pulley, an idle pulley,

a belt trained about them, and in, contact with a web roll to be driven, an arm carrying said idler, said arm being mounted to swing upon a bearing concentric with said pulley, the relative positions of the roll, pulley and idler being such that the roll will make'contact with the belt at a point near the pulley when the roll is of maximum diameter and will make contact with the belt at a point near the idler when the roll is reduced to a small diameter, and means for swinging the arm toward the roll with a pressure decreasing throughout the unwinding of the roll.

10.- In a web feeding mechanism, in which is rotatably mounted a roll of paper, the combination of a driving pulle an idler pulley, and a belt trained about t em and in contact with said roll of paper, a pivoted arm carrying said idler, and a springattached to said arm to force said-belt. against said roll and arranged to act with a decreasmg pressure as the roll decreases in size.

11; In a web feeding mechanism, in which is rotatably mounted a roll of paper, the combination of a driving pulley, an idler pulley, and a belt trained about them and incontact with said roll of paper, a swinging arm carrying said idler, and a tension spring attached to said swinging arm and to a fixed support in such a position imrelat-ion to the swinging arm pivot that the said spring will act with its greatest force, tension and leverage when the roll of paper is of maximum diameter, and will act with less force and tension with a less advantageousleverage as the roll decreases in diameter. r

12. In a web feeding mechanism, the comv for roll renewing.

bination of bearings therein in which a fresh roll of paper is rotatabl mounted, means for'rotating the roll to glve it the requisite peripheral speed before it is connected to a web running from another roll, means for connecting its end to the running webwhile it is being so rotated, said rotating means continuing to act to control its rotation throughout its unwinding;

13. In a web feeding mechanism, thecombination of a support in which a roll of paper is rotatably mounted, a belt in peripheral contact with the roll, a pulley to drive said belt, an idler for said belt, an arm for moving said idler, means for forcing said idler toward said roll and a brake shoe upon the outer extremity of said arm so located as to come into contact with the periphe of said roll of paper when the latter has on reduced to a certain oint.

14. In a web fee ing mechanism for a printing press, bearings for two rolls of paper arrangedin substantially the same horizontal plane, web guide rolls and a web running upwardly between the guide rolls to the press from one or the other of the rolls of paper alternately, and'means between the rolls for causing the guide rolls to attach the web from a fresh roll to the web from an expirin roll.

15. T e combination with two sets of web roll bearings, of means engaging a web running from a roll in either set of bearings and mounted tomove in opposite directions for deflecting aweb running from a roll in either set of bearings into contact with the surface of a roll in the other set of bearings 16. The combination with two sets of web roll bearings, of web guiding devices mount- -ed to swin on fixed pivots, and means for swin ing t e web guiding devices in opposite irections to bring a web running from an expiring roll in either set of bearin into pasting contact with a fresh roll in the other set of bearings for rollrenewing.

sides of the running web, said guiderollers being mounted inseparate swinging arms, andmeans for movin the guide rollers in opposite directions 'to ring a web running roll bearings, of guide rollers on opposite sides of the running web,'each of said ide ' rollers being mounted to swing in a pat ap bearings, and means for movin proximately concentric with one of a the the guide rollers in opposite directions to ring a web running from an expiring roll inieither. set

of bearings into past ng contact with a fresh ingweb roll and means for attaching 'the fresh web to the expiring web, of a single roll driving device acting to start the web roll before attachment of its web to the running web and to drive the roll during such attachment and theunwinding of the web.

20. The combination ,with a support for a fresh web roll and a support for an expiring web roll and means for attaching the fresh web to the expiring web, of a single roll driving device acting to start the fresh roll before attachment. of its web to the run ning web and to drive the roll during such attachment and the unwinding of the web,

and means for adjusting the roll driving de-.

vie}? to vary the speed and tension of the we 21. The combination with two sets of web roll bearin s and means for attachin the web of a resh roll in either set of ings to the web running from an expiring roll in the other set of bearings, of two roll driving devices, one, for each set of bearings, each device acting to start the fresh roll before attachment 'of its web to the running web and to drive the roll during such attachment and the unwinding of the web. 22. The combination with two sets of web roll bearings and means for attaching the web of a fresh rolliin either set of bearings to the web running from an expiring roll in the other set of bearings, of two roll driving devices, one for each set of bearings, each device acting to start the freshweb roll before attachment of its web to the running web and to drive the roll during such attach.- ment and the unwinding of the web, and means for adjusting the roll driving devices to va the speed and tension of the web.

ear-

23. he combination with two sets of web roll bearings and means for attaching the e web of a fresh roll in either. set of bearings 17. The combination with two sets of web' roll bearings, of. guide rollers on opposite each device acting to startthe fresh roll before attachment of its web to the running web and'to drive the roll during such attach.

ment and the unwinding ofthe web, a means for adjusting the speed of the ron driving devices'including connections between the devices for maintaining relative adjustment.

24. The combination witht'wo sets of web roll bearings and means for attaching the web of a fresh roll in either set of bearings to the web running from an expiring roll in the other set of bearings, of roll driving devices, one foreach set of bearings, each device acting to drive the rolls in both sets of bearings continuously throughout the starting of a fresh roll before attachment of its web to the running web and to drive the roll during such attachment and the unwinding of the web.

25. The combination with fixed bearings for two web rolls, of guide rollers 16, 17 carried by arms 18, 19 pivoted at fixed points, and connections between said arms for moving them simultaneously to shift the web in opposite directions.

26. The combination with fixed bearings for two web rolls, of guide rollers 16, 17 carried by arms 18, 19 pivoted at fixed points, a pivoted actuating member, and links 21 connecting arms 18, 19 to the actutating member for moving the rollers simultaneouslyvto shift the web in opposite directions.

27. The combination with two sets, of fixed bearings for web rolls, of means for attaching the web running from an expiring roll in either of said bearings to -a fresh roll in the other set of bearings, and a. pivoted blade located between the rolls and pivoted to swing ineither direction to sever a web running on either side of the blade. I

28. In a web feeding mechanism, the com bination of a support in which a roll of paper is rotatably mounted, a driver in contact with the roll, and a braking device cart to a certain point. A

29. The combination with fixed bearings ried by-the driver and so located as to come in contact with the roll to stop the rotation thereof when the latter has been reduced for two web rolls, of guide rollers carried t d by arms plvoted at fixed points, and connections between said arms for moving them simultaneously to shift the web in opposite directions.

30. The combination of means for supporting two rolls adjacent to each other for feeding the webs alternately therefrom, means for'rotating either roll at substantially the same surface speed as that of the web fed from the other roll, and means for pressing the web running from either roll against the adjacentrotating roll for causing said running web to pick up the gummed end of the web of the other roll.

31. The combination of means for supporting two rolls adjacent to each other for feeding the webs alternately therefrom, means for rotating either roll at substantially the same surface speed as that of the web fed from the other roll, rollers movably mounted on opposite sides of the web running-from one or the other of said rolls, andimeans for moving one roller toward one roll for pressing the running web against said roll or for moving the other roller toward the other .roll for pressing the running web against said other ro1l, one

of said rollers being movable relative to the other roller from one side thereof to the other side.

In testimony whereof, I have hereunto set my hand in the presence of two subscribing witnesses. v

BRUCE CLARK TE. Witnesses:

RICHARD KELLY,

HAROLD M. Tnmnorms'r.

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