US1892974A - Web splicing device - Google Patents

Description

Jan. 3, 133. H. A. w. WOOD WEB SPLICING DEVICE Original, Filed June 20, 1925 4 Sheets-Sheet m wm Jam. 3, 1933. H. A. w. woos WEB SPLICING DEVICE Original Filed June 20, 1925 4 Sheets-Sheet Jan. 3, 1933. H, A, w W 1,892,974

WEB SPLICING DEVICE Original Filed June 20, 1925 4 Sheets-Sheet 3 ja imzzaa Jan. 3, 1933. H. A. w. WOOD WEB SPLICING DEVICE Original Filed June 20, 1925 4 Sheets-Sheet 4 f atentedl Jam e? H933 HENRY A. WISE "WOOD, OF NEW YORK,

N. Y., ASSIGNOR TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF menus.

WEB SPLICING DEVICE Application filed. June 20, 1925, Serial No. 38,473. Renewed June 2, 1932.

This invention relates to a web changing mechanism for attaching the last end of an expiring web to a new web roll without stopping the press or reducing the speed.

The principal objects of the invention are to provide a simple and practical means for accomplishing the above mentioned purpose which will be capable of operating at the present maximum speed of web presses and also capable of operating at higher speeds than have been attained heretofore; to provide in conjunction therewith simple means for moving the expiring web out of its normal path into contact with the fresh roll at the moment when the splicing is to be done and not at any earlier or later time; to provide for directly splicing the expiring web to the running roll by positive means; to locate this positive means in a position where it will receive the running web directly from the driving belt which operates it and bend it out of its path only a slight distance into contact with the roll; to provide a roll having a yielding surface for accomplishing this result so that it will partake of the shape of the new web roll and to the irregularities thereof; to provide an improvement in the paper cutting off device: and to provide an improvement in the means for propelling the new web roll so 3 that the surface of the web roll will not bulge N out in front of the driving means.

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 preferred embodiment of this invention constituting a part of a web roll changing device and showin the web running in its original path;

Fig. 2 is a similar view showing the movement of the web into contact with the surface of the fresh web roll;

Fig. 3 is a front elevation of the same look- 4 inggin the direction of the arrow 3 in Fig. 2;

ig. 4 is an enlarged view of the trip and latch mechanism for accomplishing the change shown in Fi s. 1 and 2;

Fig. 5 is a plan of the new roll propelling means;

Fig. 6 is an end diagrammatical view of the propeller showing two positions thereof;

Fig. 7 is a side view of the roll on reduced scale showing the application of paste thereto;

Fig. 8 is a fragmentary plan of the roller and its operating parts for forcing the web against the fresh roll;

Figs. 9 and 10 are end views of two modifications of the last named roller; and

Fig. 11 is an end view similar to Fig. l on enlarged scale showing a modification.

A number of inventions have been made for the purpose of attaching an expiring web to a new web roll while the web is running. It usually involves a support or reel holding a plurality of web rolls and capable of being rotated independently of the press to bring these web rolls around successively into the desired position. I have adopted in this casea triangular reel in which there are three sets of chucks or centers for supportin three rolls at a time. I have also retained t e feature of providing belts running in contact with the running roll and properly propelled at web speed to keep the web up to web speed at all times.

I have found that an indirect application of the expiring web to the new roll is not perfectly sure in its operation because not enough strain can be put on the expiring roll to makeiheweb adhere to the glue carried by the fresh roll and because there are necessarily irregularities to the surface of the fresh web roll so that the expiring web will not attach itself to the low spots. For these reasons,

the present invention involves the direct application of the expiring web to the fresh roll by positive means comprisin a soft or flexible surfaced roller. This positive means is located in the angle between the propeller belt for the expiring web and the surface of the new roll with which it is to be spllced,

. thusinvolving only a short motion of the web from its old path to its new one and permitting of the application of the positive means in a practical manner.

It will be understood that I have not shown any particular kind of press or any special operating means for the propelling belt for running the expiring web roll and some other of the press connections, because this invention is applicable to many kinds of presses and furthermore the principle on which the web is spliced is applicable to quite different types of web roll change apparatus.

An important principle on which this splicarrangement depends is that a freely running roll in contact with the web bends the web about the new roll when the moment of splicing arrives and permits it to run in a path away from the new roll until that moment.

As stated, I have shown a reel 2 centered on a shaft 3 which is provided with a gear 4 operated either by hand or by power through a shaft 5 and worm 6. On this reel are three web rolls A, B and C. The roll B is the next roll to be used, that is the fresh roll, the one which is to be spliced with the expiring web. It will be noticed that it is also in such a position with respect to the guide rollers that the we never comes into contact with it unless diverted out of its normal path. The roll A is put into the reel at any time after the roll C reaches its running position and is ready to take the place of the roll B by the rotation of the reel in the direction of the dotted arrow in Fig. 1.

As has been done before in these cases, I provide propelling belts 7 connected up with the press to run at press speed and pressing against the running roll C so as to insure that the web as it leaves this roll will be running at web speed and prevent any variation in the speed of the web roll C. In other words, it prevents the roll C rotating faster than the web is called for and assists it to make up to web speed if any resistance is encountered so that the rnnning will always be smooth and accurate.

It has been stated that the fresh roll B is rotated in the direction of the arrow shown in Fig. 1. It is common to provide for this rotation but I have provided an improvement in the means for doing it. I find that the ordinary single hard roller which has been used for propelling this web roll forms a wave of paper in front of it. This is due to the fact that the paper on the roll is not wound absolutely tight, so the pressure of theroller distorts it and produces an irregular surface which cannot be united uniformly with the running web. Sometimes the roll is larger at one end than at the other. For the ed by brackets 10 carried purpose of avoiding the difliculty due to such irregularities I provide, instead of a single roll, two parallel pulleys 8 and 9 supporty a cross shaft 11. On these pulleys I apply a belt 12 which contacts with the surface of the roll B to cause the same to be rotated. This running propeller belt keeps the surface of the roll smooth throughout a small arc and prevents the formation of a wave in front of it. The shaft 11 is operated by a chain 13 from a sprocket 14 running from the shaft of a web guide roller operated positively from the press at web speed.

Before the change is to take place and while the Web is running from the roll C, the fresh.

web roll B is'located at the reel in about the dotted line position in Fig. 6. The belt 12 may be in contact with it and an arm 61 on the shaft 30 is against the limiting stop 15. The roll B is not rotating. The further rotation of the reel up into the full line position in Fig. 6 and in Fig. 1 brings the roll B into position to start the action. paste P has now been applied. When the pulley 8 is started by a clutch (not shown), it will start the roll B into rotation in the direction of the arrow in Fig. 2 before the reel turns to that position.

On each paper roll spindle 16 at one end The of the reel is located a cam 17 positioned in the proper place around the circle relative to the point at which the paste is applied. In the form shown, this cam 17 pro ects directly opposite the spot P at which the paste is applied on the circumference of this roll. When the cam moves from the position shown in Fig. 1 around to the position directly opposite that shown in Fig. 1, and the roll B moves to the position shown in Fig. 2, the cam presses down a cam piece 18 which is pivoted on a stud or shaft 19 on the arm of the reel. This acts in opposition to a spring 20 which is attached to the frame of the reel. This forces back a hook 20 attached to the same stud or shaft 19, as shown in Fig. 2, beyond a projection 25 on the handle lever 21. This releases the lever which is pivoted on another shaft 22. A spring 23 attached to a projection on this lever 21 is connected by a cable 26 running over a pulley 27 with a lever 28. These parts are duplicated on the two sides of the machine and the two levers 28 carry a soft and yielding surfaced roll 29. This roll is formed so that its surface at all points will yield to irregularities in the paper at the surface of the roll B. These arms 28 are pivoted on a rod 30 that runs across the machine so that the roll 29 may swing from the position shown in Fig. l to that shown in Fig. 2 and into contact with the fresh roll B. When released by the latch mechanism, the roll 29. drops by gra'v- Y niseaere time, is thus forced over toward the roll B until it contacts with it. Then the roll 29 bears against the rear side of the web which it holds in contact with the surface of the 5 fresh roll B. The parts are so designed that this point of contact is beyond the point of tangency of the web coming from the surface of the expiring roll C so there is a short arc on the surface of the new roll which is cov- 0 ered by the web and permits of the pasting of the web when the paste point P comes around to this point.

0n the hoolr or at leastfixed on the shaft 19, is an arm connected to a link 32 5 which is raised by the act of the hook in unlatching. This pulls up a pawl 33 fixed on a shaft 3% supported on the machine, releasing a pair of arms 35 fixed on a shaft 36 and previously held down by this pawl. Extending out from the shaft 36 is an arm 37 having a weight 38 thereon which now is free to drop and pull up the arms 35 having fixed thereon a cutting appliance 40. This cutter consists of a rod or convex body extending across the machine and having a series of rows of small teeth 41 on its circumference. These teeth thus come into contact with the surface of the expiring roll as shown in Fig. 2. ,As the rows of teeth are located concen- 30 trically around a center, one row or another will engage the surface of the web and cut it oil from the stub. (in the arm 3'2 is a trea- (lie 42 for restoring this cutting mechanism F to its normal latched position alter the web 0 is severed.

The roller 29 which 1 have described as soft surfaced may be either a roller or fixed element but its surface is soft enough to adjust itseli to the variations in the new roll.

This roller or other pressing element may be covered with rubber or other resilient composition or carpeting, plush, or brush bristies, so that every part or? its length as well as its width or circumference will yield to 5 the variations in the surface the new web roll. it may be made up of? e series ofseg mental rings with internsl springs ii desired, so that the rings cen yield anywhere throughout its area to adjust itself instantly and automatically to the irregularities in the surface of the fresh web roll This is desirable for the reason that a web roll is sometimes bigger at one end than at the other end, even it wound perfectly, will have high spots and low spots across By means of this arrangement, the expiring web is pasted 1 the fresh roll throughout its entire with thus avoiding the ordinary diihculties due to the fact that previous constructions it has been pasted thereto positively only at the high spots in the diagrammatic form shown on the last sheet, the conditions above described are employed exce t l have shown the old propelling roller instead oi: the propelling belt for the fresh web roll and l have shown s difierent means for operating the roller 49, which may be, in this case, a hard surface roll as has been common. Here the lever 21 is provided with a link operating a bell crank 51 against a spring 52 which bell crank carries the roller 49. This operates the old web in a manner similar to that shown in Figs. 1 and 2 except that the roller 49 does not touch the web roll and some of the advantages that have been described are omitted.

Operation Referring back again to the first -form, will be seen that the operation is very simple. The expiring roll located at C is moved down out of the Way by the gear 4: and worm 6 at the proper time. The fresh web roll B is posted and before the reel is turned to bring it up near the path of the expiring web, (see Fig. 2) the roll is set into rotation by the propolling belt 12. After the roll has rotated a little more than half a revolution in splicing position, the cam 17 acts as has been described. The latch 21 is released and the roll 29, or 49 as the case may be, is brought down to a position in which it causes the old web to en age the roll B and to wrap around it a few degrees of the circumference. The running web is spliced on at the spot P when that comes around to the position shown in Fig. 2. At the same time the old web is cut from its core by the severing device ll. The parts are restored to their original condition by the depression of the treadle 42 to bring the severing device baclr to the position shown in 1 and the depression of the handle lever 21 into locking position. The hook, being out of the influence of the cam 19, will automatically latch the handle lever and hold the roller 29 or 49 up out of the way. The press has not been stopped or slowed up during this period After the splicing operation is over the new roll continues to feed to the press in the position :3 shown in Figs. 1 and 52.

This constitutes a construction which is capable of operating at the highest speed so far attained in press work and with enough to spare to insure that it will operate at considerable higher speed if called on to do so. It is jS within the control of the operator and the operating parts that control the speed of the web at this point are operated by the press at the speed thereof so that the web runs smoothly and brealrs are reduced.

Although I have illustrated end described only two forms of the invention, it am aware of the fact that other modifications can be made therein by any person skilled in the art without departing from the scope of the invention es expressed in the claims. Therei'ore, I do not wish to be limited to all the de- 1. In a web replenishing device, the combination with a reel having means for sup porting a plurality of Web rolls thereon, and means for rotating the reel, of a web roll propelling device comprising a Web engaging roll, means for rotating said web engaging I roll at web speed, a pulley rotating with said roll, a shaft parallel with the roll, a-belt for rotating the shaft from the web engaging roll,

a pulley on the shaft on which said belt runs, the belt operated by said pulleys constituting a propelling means driven at the speed of the web for engaging the fresh web roll and rotating it.

2. In a web replenishing device, the com.- bination with a rollerfor guiding the web, means for positively driving the roller at web speed, a shaft positively driven from the roller, a pulley on the shaft, a pair of brackets pivoted on said shaft, a second shaft carried by the bracket, a pulley on the second shaft, a beltrunning on said pulleys at web speed, a stop against which said brackets are adapted to engage for holding the belt in a limiting position when the belt is not running, a reel for supporting a plurality of web rolls movably around a center, whereby when a web roll supported by the reel is moved into contact with said belt, said web roll may be rotated on its own axis and its speed accelerated until it moves at web speed.

3. In a web replenishing device, the combination with a reel for supporting a plurality of web rolls, means for rotating the reel to bring the web rolls successively into pasting and running positions, a pair of propelling belts for engaging a web roll in running position and keeping it rotating at web speed, means for operating said belts from the press at the speed of the web, a propelling belt in position to engage the surface throughout a small arc, and means for running the last named propelling belt at web speed, whereby the fresh roll will be made to rotate at the speed of the web.

4. In a web replenishing device, the combination with a reel for supporting a plurality of web rolls, feeding belts for engaging a web roll in running position and keeping it rota-ting at web speed, means for operating said belts from the press at the speed of the web, a roller located at a point between the fresh web roll and the feeding belts and engaging the running web on the side adjacent to the said feeding belts, means for moving a fresh roll into splicing position, and means whereby after the fresh roll has been moved into splicing position the roller engaging the web will be moved automatically against the fresh roll in a position to hold the running web against the surface of 65 the fresh roll through a slight angle and insure the attachment of the web to a pasted area on the surface of the fresh roll.

5. In a web replenishing device, the combination with a reel for supporting a fresh web roll having a pasted area thereon, of a roller mounted to rotate freely on the side of the web opposite the fresh web roll, a lever pivoted on the frame of the reel and having means for holding the roller up in normal running position where it will guide the web in a path away from the fresh web roll, and means operated ,by the rotation of the fresh web roll for allowing the roller to move the running web directly into contact with the web roll.

6; In a web replenishing device, the combination with a reel for supporting a fresh web roll having a pasted area thereon of a roller mounted to rotate freely on the side of the web opposite the fresh web roll, said roller having a soft and pliable surface throughout its area, a handle lever pivoted on the frame of the reel and having means for holding the soft roller up in normal running position where it will guide the web in a path away from the fresh web roll, the soft roller being adapted to push the running web into contactwith the surface of the fresh web roll When released, a latch for holding the handle lever in position to keep said roller back away from the web roll, and means operated by the rotation of the fresh web roll for releasing said latch at apredetermined time and allowing the soft roller to move the running web directly into contact with the web roll.

7. In a web replenishing device, the combination of a roller-mounted to rotate freely at the side of'the web opposite the fresh web roll, said roller having a soft and pliable surface throughout its area, a handle lever having means for holding the soft roll up in normal running position where it will guide the Web in a path away from the fresh web roll, the weight of said roller acting at all times to tend to pull up the handle lever and to drop and push the running web into contact with the surface of the fresh web roll, a latch for holding the handle lever down in opposition to said roller, a cam on the web roll spindle operated by the rotation of the fresh web roll for releasing said latch at a predetermined time, a cam piece in position to be engaged by the cam when it turns to a certain position, and a latch for holding the handle lever down, said latch being fixed with respect to said cam piece and mounted to be moved with the cam piece by the cam.

8. In a web replenishing device, the combination with a guide roller on the side of the web opposite the fresh web roll, a handle lever having means for holding the roller up in normal running position where it will guide the web in a path away from the fresh web roll, the roller being mounted so as to neeaevrtend at all times to move into a position to push the running web positively into contact with the surface of the fresh web roll, a latch for holding the handle lever back in opposition to said roller, a cam on the spindle of the web roll, a cam piece in position to be engaged by the cam when it turns to a certain position, and a latch for holding the handle lever back mounted to be moved with the cam piece by the cam, and yielding means for holding the latch in position for locking the handle lever in its position to hold the roller away from the surface of the web roll.

9. In a web replenishing device, the combination with a roller mounted on the side of the web opposite the fresh web roll, a handle lever having means for holding the roller in normal running position where it will guide the web in a path away from the fresh web roll, said handle lever being pivotally mounted, yielding means for acting at all times to tend to pull up the handle lever and allow the roller to drop and push the running web into contact with the surface of the fresh web roll, a latch for holding the handle lever down in opposition to said yielding means, means operated by the rotation of the fresh web roll for releasing said latch at a predetermined time, said mechanism comprising a cam on the spindle of the web roll, a cam piece in position to be engaged by the cam when it turns to a certain position, a latch for holding the handle lever down fixed with respect to said cam piece but mounted to be moved with the cam piece by the cam, a web severing device operable in connection with the expiring web roll, a pawl for holding the severing device in inoperative position, means for normally urging it to move against the expiring web roll, and means connected with said latch for moving the pawl out of operative position when the latch is moved to un-- locking position.

10. In a web replenishing device, the combination with a roller mounted on the side of the web opposite the fresh web roll, a han dle lever having means for holding the roller in normal running position where it will guide the web in a path away from the fresh web roll, said handle lever being pivotally mounted, means for acting to pull up the handle lever and allow the roller to drop and push the running web into contact with the surface of the fresh web roll, a latch for holding the handle lever down in opposition to said pulling means, means operated by the rotation of the fresh web roll for releasing said latch at a predetermined time, a web severing device operable in connection with the expiring web roll, a pawl for holding the severing device inoperative position, means for normally urging it to move against the expiring web roll, and means connected with said latch for moving the pawl out ofoperative position when the latch is moved to unlocking position.

11. In a web replenishing device, the combination with a roller mounted on the side of the web opposite the fresh web roll, pivoted means for holding the roller in normal running position where it will guide the web in a path away from the fresh web roll, means for acting to allow the roller to drop and push the running web into contact with the surface of the fresh web roll, a latch for keeping the holding means down in opposition to said dropping means, means operated by the rotation of the fresh web roll for releasing said latch at a predetermined time, a web severing device operable in connection with the expiring web roll, a pawl for holding the severing device in inoperative position, and means connected with said latch for moving the pawl out of operative position when the latch is moved to unlocking position.

12. in a web replenishing device, the combination with a support for a running web roll and a fresh web roll, of means for guiding the web from the running roll to the press out of contact with the fresh roll, means for engaging the web on the side opposite the fresh roll, means on the support for holding the web engaging means in a position away from the fresh roll, a latch mechanism, and means connected with the fresh roll for engaging the latch mechanism, as the roll supporting means is moved to bring the fresh roll into operative position, and allowing the web-engaging means to move against the surface of the fresh roll.

l3. In a web-replenishing mechanism, the combination with means for supporting a running web roll and a fresh web roll, of means for engaging the web on the side opposite the fresh roll, means on the supporting means for holding the web engaging means in a position away from the fresh roll, a latch mechanism, means connected with the fresh roll for releasing the latch mechanism as the roll is rotated, whereby the web-engaging means will be permitted to drop against the surface of the fresh roll, and a web severing device for severing the exhausted web from the running roll connected with said latch mechanism to be actuated therewith.

14. In a web replenishing device, the combination with means for moving a running roll and a fresh web roll into a position for the end of the running web to be pasted to the fresh web roll, a pawl arranged to be 0 erated by the combined movements of t e supporting means and the fresh web roll, means for severing the Web from the exhausted stub, said pawl normally holding the severing means in inoperative position, a counterweight connected with the severing device for moving it into operative position, and a treadle for withdrawing the severing device into inoperative position and allowing it to be held back by said pawl.

15; In a supporting device for a web replenishing mechanism, the combination of a pair of arms pivotally mounted, and 'a convex member extending across the replenishing device on said arms and having a plurality of longitudinal rows of points pro]ecting therefrom around an arc, means for causing the engagement of said member with the expiring Web and severing it from the stub thereof.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

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