US2032244A - Automatic splicing mechanism - Google Patents

Description

H. A. w.'woo:

AUTOMATIC SPLICING MECHANISM Feb. 25, 1936.

Filed Aug. 11, 1951 5 Sheets-Sheet l Z zdarelfar l'f/f 2453s 700d 4 Zea Feb. 25, 1936. H, A w. WOOD AUTOMATIC SPLICING MECHANISM Filed Aug. 11, 1931 5 Sheets-Sheet 2 WOOD H. A. W.

Feb. 25, 1936.

Feb. 25, 1936. H. A. w. WOOD 2,032,244

AUTOMATIC SPLICING MECHANISM Filed Aug. 11, 1951 5 Sheets-Sheet 4 H. A. w; 'woon 2,032,244

AUTOMATIC SP-LIOING MECHANISM Feb. 25, 1936.

Filed Aug. 11, 1931 5 Sheets-Sheet 5 Jaw/ear "Wow-r4293? W.

J%EM Patented Feb. 25, 1936 AUTOMATIC SPLICING MECHANISM Henry A. Wise Wood, New York, N. Y., assignor to Wood Newspaper Machinery Corporation, New York, N. Y., a corporation of Virginia Application August 11, 1931, Serial No. 556,388

- Hussite V 21 Claims. (Cl. 242-58) This invention relates to a type of mechanism which is used in splicing web rolls, such as those being fed to large newspaper presses, with no diminution in speed of the press.

The principal object of the invention is to provide for eflicient automatic control of the paper roll handling device so that it is not necessary for the operator to attend to any of'the operations incident to feeding 011' the paper or varying tension, his only duties being to remove the old cores, place in new rolls and prepare the forward end of these new rolls for splicing. This relieves the operator of any responsibility in watching the paper roll as it is spliced or used off and insures the proper feeding of the paper to the press in a repetitive manner which makes foruniformity, thereby lessening paper breaks and permitting an operator to prepare more rolls since he is relieved of a large portion of his duties. Other objects of the invention areto provide simple means for shifting from automatic to' so-called manual operation, to facilitate loading and to permit of more flexible operation; to provide simple means whereby a button can be pushed at any time and a paster can be made whenever the reel operator decides that it is not safe to use part of the web that would be used if it were allowed to run until-small enough for the buttrswitch lever to pass over its edge, and to provide for making the splice automatically from a larger butt than usual.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is an end view of a well-known reel for supporting paper rolls showing this invention applied thereto;

Fig. 2 is an elevation of the device;

Figs. 3 to 9 are small sketches showing the sequence of operation of this automatic device, and

Figs. 10 and 11 constitute the wiring diagram, which show the entire wiring of the machine.

In Fig. 2 the shaft 45 is mounted in pedestals 46 adapt-ed to be rotated by reel motor 48 driving worm wheel 49. Spiders 50 carrying a multiplici y of rotatable spindles 5| for the mounting of paper rolls R are mounted on and slidably secured to. the shaft 45. The embodiment shown is adapted to carry three such paper rolls. Tension straps 52 are mounted in a conventional manner, one end being secured to the floor, the strap passing over idlers 53 with the other end carrying weights 55. It is understood, of course, that the stationary straps do not form a' claim of my invention, except in combination, and that running tension belts may be used as well. By rotating the reel into or out of the straps more or less tension may be applied to the web which is being fed from the paper roll in use.

As covered in my former application, Serial No. 443,083, filed April 10, 1930, now Patent 1,891,965, December 27, 1932, when one roll is nearly used up, the reel is in the position shown in Fig. 1 where a brush arm 56 is lowered by the counterclockwise rotation of segment 51 which is driven by a motor 58 through worm 59. Suitable stop switches are provided for limiting the motion of this brush arm as willbe described later.

At the proper time, asdetermined by the size of the butt, a pasting brush 59 ever which the web travels is allowed to move forward through the action of a brush solenoid 60 tripping a latch 6| abutting a toe 62 so that springs 63 through spring rods 64, arms 65, shaft 65 and arms 65- press the wb against the new roll to pick up the paste-covered points, thereby making the splice.- It will be understood that, as in my above identified application, the fresh web roll has previously been rotated on its own axis and brought up to web speed. This mechanism is not shown here as it forms no part of this invention and may be operated independently.

After a certain length of paper has been fed off to insure splicing to the new roll, a knife 61, through gear 68, segment 59 and solenoid I0 is rotated into the web, thereby severing the old sheet. After this is accomplished the motor 58 begins rotating in a reverse direction to that described above, lifting the brush arm mechanism to the dotted line position shown in Fig. 1. The reel then moves in a counterclockwise direction until the large new roll has sufficient contact with the tension straps 52 to insure proper tension at which point the reel stops. This position will be approximate to that shown in dotted lines in Fig. 1.

The paper is fed off from this reel position until the roll is approximately one-half the original diameter, at which time the roll switch lever H passes over the edge of the roll thereby allowing a spring 12 to close contacts 2 and 45. As will be described later, this causes the reel to rotate to approximately the full line position shown in Fig. 1, from which position the paper is fed to the press until the roll becomes small enough to demand the lowering of the brush arm for another splice.

Thus automatic setting of reel position percontact of the tension straps on a large roll; and,

positions the reel sothat a magnetic clutch 83 is engaged to assist in retarding this roll suddenly in case of an emergency stop. This braking force on the roll spindle is actuated only when the emergency button is pressed. Selector rings I2 for this braking assistance through the roll spindle are so arranged that as long as the full roll is above say a horizontal line through the reel center, pressing ofv theemergency. button will engage the magnetic clutch on the roll spindle 5I to retard this roll as the press slows down. ,If,

however, the roll is below a horizontal line through the reel center the normal tension members 52 are then suflicient to stop the roll in proper relationship with the; press on an emergency button. This device is so arra'ngedthat, by'the automatic positioning of the reel, when the press is stopped with a small size roll this braking through the spindle is not applied.

When the roll wears down to a certain predetermined size so that it is necessary to lower the brush arm this is done automatically by a switch lever 13 passing over theedge of. the roll allowing spring I4 to close contacts 2 and 46.

This causes the motor 58 to be energized to lower the brush arm to the proper position. Just as the motor 58 stops rotating, the reel begins to move in a counterclockwise direction .until thesurface of the incoming roll through an arm (Fig. 10) operates the monkey switch 81, at which time the roll is the proper distance from the brush. The operation of the monkey switch causes the reel to stop rotating. This satisfies one of three conditions necessary to the operation of this mechanism.

The next condition is that the butt be a certain predetermined size and is satisfied when the switch lever I5 passes over the edge of the paper roll closing the contacts 34 and 35. This satisfies the second condition.

The third is that the pasted points on the incoming roll be in a certain angular position when the brush is released. This is accomplished by contact on the incoming roll, the making of which satisfies the last condition, allowing the brush to be snapped forward. to press the web against the incoming roll. This completes the cycle of operation and as will be described in conjunction with the wiring diagram, it will be seen that the whole operation is automatic.

The sequence of operations may be understood quite clearly from an inspection of Figs. 3 to 9. Fig. 3 shows the brush arm in'the lowered position just after the paster has been made, when the brush is reset and the arm is being raised. Fig. 4 shows the brush arm raised to an inoperative position with the reel in running position for a full size roll, the fresh roll being pressed against the tension strip. Fig. 5 shows the same position with the roll used down to the point where s'witch lever II operates. Fig. 6. shows the reel position a few seconds later when it has shifted so that the running roll is at the lowered position. Fig. 7 shows the roll used down until the switch' lever I3 operates to lower the brush. The web from i the nearly exhausted roll now runs closely adjacent to the fresh roll. The brush in its lowered position is shown in Fig. 8. Fig. 9 shows the is next in sequence, completes the .cycleof operation.

In tracing out the wiring diagram, let it be con sidered that the reel is in the position shown in Fig. 7, at which point switch lever 13 passes over the edge of the roll to close the contacts 2 and 45 to lower the brush-arm 55 representing several 2 and connected to contact 46 through brush 42*.

contacts, each connected to one side of the line Y The current goes through the double throw switch I06, determining whether or not the control is manual or automatic, and is connected with the line 42 which energizes the contactor IS. The

other side of the line is represented by I and several contacts directly connected therewith. This closes contacts I and 25 which is equivalent to pressing the lower button in push button station 96. Through line 25 which passes through a safety switch 'II, demanding that the reel be in lowered, a contact is made with 23 which in turn through a'limit switch 18 makes contact with line 22. Line 22 then runs to contactor 19 thereby energizing it, since the other side of the contactor is connected to line 2. This closes the contacts'shown directly above contactor I9 to cause the lift motor 58 to rotate in such a manner as to bring the brush arm down to the position shown in Fig. 8.

The cam is geared to and rotates with the brush arm except in the opposite direction. When the cam 80 has rotated to the position shown in Fig. 10, contacts 22 and 23 are opened thereby dropping out the power on contactor I9, causing the lift motor 58 to cease rotation. Just as the cam 8!! begins rotating in its clockwise direction.

. as the brush arm is lowered, contacts I and 20 in a switch 8| are closed so that current from one side of the line I is transmitted through the line 20, through a rheostat 82 to line I6 which then goes into selector ring I2 and to slip ring I2 on the roll spindle and to one side of the magnetic:

The connecting of contacts 5 and 21* is equivalent to pressing the forward button 2'|-'-5, at

'push button station causing the reel to rotate in a counterclockwise direction. This is apparent when line 21 is traced over to contactor 86 one side of which is connected to line I and contact 5 is trac'edthrough monkey switch 81 where it the proper position before the brush arm may be is normally connected to line 2. The energizing of contactor 86 closes contacts I and 40, 2 and 39. This rotates the reel in a counterclockwise direction until the surface of the roll bears against a toe 8'1 which operates monkey switch 81. The

connects contacts 2 and 5, consequently dropping out contactor 86 and stopping the reel motor, and makes contacts 3 and 4: This making of contacts 3 and 4 satisfies one'condition demanded beforea splice is made; namely, that the roll is the proper distance from the'brush.

The second condition to be satisfied is that the butt is the proper size as determined by the operation of butt switch lev'er I5. After butt switch lever I5 slips over the edge of the roll to close contacts 34 and 35 the very next revolution of the incoming roll causes a circuit to be established from line 2 through brush 34 when the segment operation of the monkey switch at this time dis- It will be noticed that measuring relay solenoid 9| is also connected with lines I and 3 and energized at the same time. This releases a drum 92 on which are carried the several contacts shown so that these contacts rotate in direction relationship to the speed of the press.

When the drum 92 has rotated the proper distance to insure picking up the pasted points,,brush l5 contacts with the small segment connected to line I. This places one side of the line on contact I5 which may be traced through to the knife solenoid 93, the other side of which is connected to line 2. This energizes knife solenoid I releasing the knifeto sever the 'old web. The rotation of the knife shaft 94 by a projection closes contacts I and39 and by tracing contact 39 through the connection panel to selector ring 36, it will be seen that brake solenoid 95 is energized since its other side is connected to line 2. This places 'button in push button station 96. This connects one side of the line through limit switch 91 to contact 2| which runs toone side of contactor 98, the other side being connected to line 2. The energizing 'of this contactor 98 closes the contacts shown just above to rotate lift motor 58 in a direction to lift the brush arm. As the brush arm is lifted to the inoperative position, cam' 80, then rotatingin a counterclockwise direction, opens contacts 2I and I9. This cuts oif the source of power to contactor 98 thereby stopping the lift motor.

This raising of the brush arm undoes some of the things done as the brush arm was lowered. Thus, contacts I and 20 in limit switch 8| are broken, thereby deenergizing magnetic clutch 83. Before this is done, however, rheostat82 performs its function of reducing the voltage on the magnetic clutch as the brush arm is being raised, thereby releasing the tension caused by the magnetic clutch in a gradual manner. The final disengagement of the clutch, however, is through the opening of contacts I and 29 in limit switch 8| and is caused by the rotation of the cam 80. During the course of lifting the brush arm, monkey switch 81 is. reset, thereby breaking contacts 3 and 4 which allows contactor 89 and solenoids 60 and 9| to be deenergized. Since contactor 85 is held in through its own contacts 34 and 35 the resettingof monkey switch 81, closing contacts 2 and 5, causes the reel motor 48 to rotate sending the reel in a counterclockwise direction. This continues until projection 99 on the reel spider contacts with a switch roller of a switch I00 to break contacts 2 and 35. This breaks the circuit feeding contactor 85 dropping'it out thereby stopping the reel in the position shown in Fig. 4.

Meanwhile the drum 92 has been rotating in direct relationship to the press. When the wedge-shaped segment which is connected to line I contacts with contact 26, one side of the line is placed on this contact which may be traced to kicker solenoid ii, the other side of which is connected to line 2. This energizes the kicker solenoid moving kicker I02 to such a position that it sets askew the pasted papers on the delivery.

Signal light or lights I03 are provided which may be placed at the delivery of the press in the mailing room or any other convenient place to announce that a paster has been made. When the contactor passes off of the wedge-shaped segment, kicker solenoid I 0| is deenergized and kicker I02 returns to its normal inoperative. position.

The splice has now been made, the old web severed, the butt stopped, the brush arm lifted to ,the inoperative position, the papers on the delivery marked to distinguish them, and the new roll is running in-the position illustrated in Fig. 4. As long as the reel is in this position selector ring I2 contacts brush I'I. With the reel so positionedin event of an emergency stop of the press, contactor I04 is energized, since the terminals are connected across the dynamic brake resistance of the press motor (not shown). closing contacts. I .and I1. Tracingthrough contact H to selector ring I2 it will be found that this energized magnetic clutch83 which takes a grip on the roll spindle assists the normal tension straps in bringing the roll to a stop in proper relation to the press without a sheet break. This particular feature I have covered in a former application, Serial No. 542,865, filed June 18, 1931.

As the press uses paper, the size of roll R diminishes until lever I05 (similar to 'II) passesover the edge of the paper to close contacts 2 and 40. Contact 2, being one side of the power, may be traced through contact 40 to selector ring I40, through brush 2'! to double-throw switch I06 where it connects to line 21 and thence to one side of contactor 86, the other side being connected to line I. This energizes contactor, 86 closing contacts to cause motor 48 to rotate the reel in aco'unterclockwise direction. This continues until brush 2! passes off the righthand end of the selector ring I49 due to which contactor 85 is deenergized and the reel stop: in the position shown in Fig. 6. In case of an emergency stop with the reel in. this position contactor I04 is closed as before but Crush 21* then connects with a dead segment and therefore no completed circuit is established to v the magnetic clutch c any spindle, the tension of normal tension members 52 being sufi'icient to stop the roll properly.

Paper continues to" be used from roll R until .ments of the reel it will be seen that this provides a short circuit across the contacts serv-,

ing the butt switch, such as 34 and 35 'which is normally operated by switch lever 15. This paste button is provided so that the reel operator, when in his judgement the buttmay not be safely used down to the point where the butt lever I01 (similar to 13) passes over the edge of switch lever passes over the edge of the roll, may

press it, shorting outthe butt switch, and obtain the splice within one revolution of the incoming roll. In a former application, Serial No. 544,762, filed June 16, 1931, I have provided for adjustability of this butt switch 15 so that an operator may judge the condition of the roll and regulate the switch to leave more or less paper on the butt accordingly. This paste button provides still an additional regulation in that the splice may be made from a larger butt than the adjustable butt switch would normally accommodz e or permit an operator to quickly make .3. splice should something untoward or unexpected happen to or show up as the butt is being used.

A double pole, double throw, switch I06 is provided to permit a shift from automatic to manual operation and back by simply pushing a button. A shiftto manual control, through 1 the opening of contact 42 causes contactor 16 to become inoperative thus eliminating the automatic lowering of the brush arm; also, through the opening of contact 2'! the automatic operation of the reel to its respective positions is eliminated. This latter feature is especially desirable since in the loading of reils the reel is frequently moved back and forth to iacilitate loading. After a new roli has been loaded the button marked automatic is then pressed t remake contacts 21 and 21 42 and 42 an the device resumes its automatic operation as deall the functions incident to splicing a web, in-

eluding severing of the old web, braking the butt, lowering and lifting the brush arm, indicating the pasted papers on the delivery, and positioning the reel to provide proper tension ofthe paper, not only during normal running conditions but on emergency stops, without any attention on the part of the operator. those of removing used butts and loading and preparing new rolls for splicing. Further, provisions are made for a simple shift from automatic to so-called manual operation of the device to facilitate ioading of the reel and to permit of more flexible operation. I

It is entireiy within the scope of this invention that additional switch levers, operating either against the end of the surface of the roll, be used to cause the reel to be stopped at a greater number of operating positions orieven that levers or contacts be operated from some such tension device as a floating seller tocause the reel to move into or out of the belts or straps in automatic response to changes of tension.

Although I have iliustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed. in the claims.. Therefore, I do'not wish to .be limited in this respect but what I do claim is:- I

1. In a web splicing machine, the combination with a reel for supporting web rolls and means for operating the reel to move the rolls, of electrically operated means for starting and stopping the operation of the reel in a predetermined order to bring the rolls successively. into the sev-' eral positions for the various operations of splic ing to take place, a kicker solenoid, and means operated by said electrically controlled means for energizing the kickersolenoid to set askew a product on the delivery. at equal intervals.

His duties are only 2. In a machine for feeding a web to a. printing machine and splicing it, the combination with a movable web roll support and means for operating it to move the web rolls, of means for controlling the motions of the support to bring therunning rolls successively and repeatedlyfrom the running position into position to direct the web therefrom closely adjacent to a fresh roll preparatory to splicing the running web to the fresh roll, means for pressing the running web out of its normal path against the pasted fresh roll for splicing, means for controlling therlast named rolls bodily, of means for controlling the operating meanssto bring the running roll successively into running position for the web therefrom to run closely adjacent to the surface of a fresh web roll in splicing position, means for pressing the web out of its normal path against the pasted fresh roll, means whereby the diminution in diameter of the running roll will operate the last named means automatically, a push button, and means controlled. by the push button for rendering inoperative said last named automatic means for making a splice from, a larger butt than usual, when desired.

In a web supply mechanism, a support for a running web roll and a replacement roll, means for accelerating the replacement roll to a peripheral speed substantially equal to that of the running roll, means for pressing the running web against the replacement roll when in running position to make a web join, actuating means mounted on'the support and operated automatically when the running roll approaches exhaustion, and a timer moving in synchronism with the replacement roll and adapted to cooperate with the said actuating means to control the operation of the pressing means to make the 5. In a web supply mechanism, a support for a running web roLl, and a replacement roll having adhesive on its web end. a first actuating means operated automatically when the running roll is partially exhausted for operating the roll support to move the running roll away from run ning position and move the replacement roll to running position preparatory to making a web join, means for accelerating the replacement rollto'a peripheral speedsubstantially equal to that of the running web, web shifting means for moving the running web against the replacement roll in running position, a second actuating means operated automatically when the running roll approaches exhaustion, and a timer moving in synchronism with the replacement roll and adapted to cooperate with said szond actuating means to control the operation of the shifting means to make the join.

6. In a web supplymechanism, a web deflector, means for moving the deflector into contact with the running web, a latch adapted to hold the de-, flector against a bias tending to force it toward combination of movable means for supporting a plurality of rolls of paper, means for driving a fresh roll having adhesive thereon to rotate the same and bring it up to the speed of the tra eling web from an expiring roll, means for effecting contact of the rotating fresh roll and the traveling web from the expiring roll to make a paster, and means for cutting off said Web comprising a shaft, a cutting element thereon, a motor for turning said shaft, and means for automatically energizing said motor to operate said cutting element a predetermined and unvarying distance behind the pastor.

8. In a machine for splicing a web while running at full speed, the combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running web roll and a fresh web roll, a pasting brush movable from inoperative position, to an intermediate position, means for speeding up the fresh web roll, means for rotating the support to bring the fresh web roll to splicing position adjacent to the running web and stopping rotation of the support, and a circuit completing device adapted to operate after the fresh web roll has been placed in splicing position and has made more than one full revolution to permit the brush to press the running web against, the fresh web roll to make a splice.

9. In a machine for splicing a web while running at full speed, the combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running wb roll and a freshweb roll, a pasting brush movable from inoperative position to an intermediate position,

means for speeding up the fresh web roll, means for rotating the support to bring the fresh web roll to splicing position adjacent to the running web and stopping rotation of the support, a timer moving in synchronism with the fresh web roll, and a circuit completing device adapted to operate after the fresh web roll has been placed in splicing position and has made more than one full revolution to permit the brush to press the running Web against the freshweb roll to make a splice 10. In a machine for splicing a web while running at full speed, the combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running web roll and a fresh web roll, a pasting brush movable from inoperative position to an intermediate position, means for speeding up the fresh web roll, means for placing the roll in splicing position adjacent to the running web, and a circuit completing device adapted to operate after the fresh web roll has been placed in splicing position and has made more than one full'revolution to permit the brush to press the running web against the fresh web roll to make a splice. I

11. In a machine for splicing a Web while running at full speed, the combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running web roll and a fresh web roll, a pasting brush movable from inoperative position to an intermediate position,

web roll support provided with rotating mechanism and adapted to rotatably carry a running roll and a replacement roll, and control means for said rotating mechanism mounted on the support and adapted to rotate said support when the 5 running roll is reduced to a predetermined diameter and means operated'by the motion of the support to stop said support when the replacement roll is in splicing position adjacent the running web. I 13. In a'web supply mechanism, a support for a running web roll and a replacement roll, a brush arm) actuating means operated automatically when the running roll is partially exhausted for rotating the roll support to move the replacement roll into position for lowering the brush arm, means controlled by the running roll for lowering the brush arm and rotating the roll support to move the replacement roll into position for making a web join, means governed by the diameter of the replacement roll for stopping the support automatically when the periphery of the replacement roll reaches a position near the web running from the running roll, and a brush arranged to press the running web against the replacement. roll to make the join, 14. In a'web supply mechanism, a support for a running web roll and a replacement roll having adhesive on its outer web end, means for accellerating the replacement roll to a speed substantially equal to that of the running 'rolL web shifting means for moving a web from the running roll against the replacement roll, actuating means on the support and including a finger engaging each roll, and a timer moving in synchronism with the replacement roll and adapted to cooperate with the said actuating means to control the operation of the shifting means when the running roll approaches exhaustion. 40

15. In a web supply mechanism, a rotatable support for a running web roll and a replacement roll, a motor for rotating the support to bring the periphery of the replacement roll near the running web, a web deflector adapted to press the running web against the surface of the replacement roll, feelers bearing on the rolls, and means governed by the feelers to start and to stop the motor and to control the operation of the web deflector.

16. In a mechanism for supplying a web to a printing machine, a rotatable carrier for supporting a plurality of web rolls and adjustable to receive rolls of varying length, means responsive to reduction of the running roll to initiate the operation of changing the web feed from a roll carried by one end of the carrier to a roll carried by another end of the carrier, means associated with each end of the carrier for initiating a phase in the web renewal operation in dependence on the angular position of the roll of the corresponding carrier, and a selector device for rendering the last mentioned means respectively operative in dependence on the positions of the carriers relative to a normal running 85 position.

17. In a machine for splicing a web while running at full speed, the combination of a rotatable web roll supportcapable of supporting a plurality of web rolls includinga running web roll and a fresh web roll, an electrical circuit, a pasting brush movable from inoperative position to an intermediate position, means for speeding up the fresh web roll, means for rotating the support to place the fresh web roll in splicing position 76 peripheral 30 adjacent to the running web, and a push but-- ton so arrangedin the circuit that it may be operated after the fresh web roll has been placed in splicing position and has made more than one full revolution to permit the brush to press the running web against the fresh web roll to make a splice.

18. In a machine for splicing a web while running at full speed, the combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running web roll and a fresh web roll, an electrical circuit, a pasting brush movable from inoperative position to an intermediate position, means for speeding up the fresh web roll, means for rotating the support to place the fresh web roll in splicing position adjacent to the running web, a timer moving in synchronism with the fresh web roll, and a push button so arranged in the circuit that it may be operated after the fresh web roll has been placed in splicing position and has made more than one full revolution to permit the brush to press the running web against the fresh web roll to make a splice.

19. In a machine for splicing a web while running at full speed, the. combination of a rotatable web roll support capable of supporting a plurality of web rolls including a running web roll and a fresh web roll, a pasting brush movable from inoperative position to an intermediate position, means for speeding up'the fresh web roll, means for rotating the support to place the fresh web roll in splicing position adjacent to the running web, and means which are operated after the fresh web roll has been placed in splicing position and has made more than one full revolution, to permit the brush topress the running web against the fresh web roll to make 9. splice. v v

20. In a web splicing device, the combination with means for supporting a fresh web roll, means for rotating the fresh web roll through its axis, a magnetic clutch for controlling the last named means, and means for supplying a current to the magnetic clutch gradually, to give a smooth acceleration to the fresh roll and a gradual deceleration.

21. In a web splicing device, the combination with means for supporting a fresh web roll, and means for rotating the fresh web roll through its axis, of a magnetic clutch for controlling the last named means, means for applying a current to the magnetic clutch gradually to give a smooth acceleration to the fresh roll, tension straps for engaging the said web roll after splicing, and means for gradually throwing out the magnetic clutch while the tension straps are also tal ing effect on the roll gradually.

HENRY A. WISE woon.

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