US2454093A - Web splicing device - Google Patents

Description

Nov. 16, 1948. o. c. ROESEN WEB SPLICING DEVICE 4 Sheets-Sheet 1 Filed Feb. 6, 1945 INVENTOR I"! ATTORNEY5 Nov. 16, 1948. 0. cl ROESEN WEB SPLICING DEVICE Filed Feb. s, 1945 4 Sheets-Sheet 2 16, 1943- o. c. ROESEN 2,454,093

EB SPLICING DEVICE 4 Sheets-Sheet 3 Filed Feb. 6, 1945 'M ATTORNEYS Nam 15, 1948.

Filed Feb. 6, 1945 O. C. ROESEN WEB SPLICING DEVICE 4 Sheets-Sheet 4 INVENTQR BY 7 (PM, 1%

I lr l ATTORNEYS Patented Nov. 16, 1948 WEB SPLICING DEVICE Oscar C. Roesen, Scarsdale, N. Y., assignor to Wood Newspaper Machinery Corporation, Plainfield, N. J., a corporation of Virginia Application February 6, 1945, Serial No. 576,477

17 Claims. 1

This invention relates to web splicing and more particularly concerns improved apparatus for accelerating a new web roll and splicing the leading end of the web thereon to a similar web running from a substantially depleted web roll to web consuming apparatus.

In many manufacturing operations, relatively thin flexible webs of paper, fabric or other material are fed to machines or devices that form finished articles from the web. For example, in the printing of newspapers, magazines and books, a paper web is fed to a printing press, and in the manufacture of paper bags and other containers, a paper or other flexible web is fed to a bag or container making machine. In these and similar operations including the winding of small web rolls from large rolls, the web is con tinuously supplied and the economic and efilcient operation of the web consuming apparatus necessitates periodical replacement of the web roll from which the web is fed. It is in all cases desirable and in many cases essential that the replacement of a web roll be accomplished without stopping the operation of the web consuming apparatus or materially retarding the rate of travel of the web thereto. For this reason, the new or replacement web roll must be rotatively accelerated to a speed at which its surface velocity equals or closely approximates the linear velocity of the running web, after which the leading end of the web on the new roll must be spliced to the running web, and the web running from the old roll to the splice severed.

In the past, various types of apparatus for accomplishing the above described web replacement have been proposed in connection with paper-webs employed in the printing of newspapers and the like. In most of the arrangements heretofore proposed, the new web roll carries a layer of tacky adhesive on its surface at the leading end of the web thereon, and the running web is maintained out of contact with the new roll surface until the new roll has been accelerated to running web speed and thereafter until the old roll has substantially run out. In these arrangements, special means are provided for accelerating the new web roll, and this means must be designed and arranged to bring the new roll to a surface speed as close as possible to that of the running web. This roll accelerating mechanism is necessarily somewhat complicated and adds considerably to the initial cost and maintenance expense of the web roll replacement apparatus.

In most known web feeding and splicing apparatus, the web being fed from a roll to the web consuming apparatus is maintained under suitable tension by contact thereof with belts, straps or other suitable means, and it is desirable or essential that this tensi'on be maintained durin replacement of the roll from which the web is fed. After the web running from a depleted roll is spliced to the web on a new roll, the web running from the old roll must be severed, and in the past, this has been accomplished by a knife which is sectionalized to pass between the belts or straps that engage and maintain tension on the web. The result is that the web is partially cut and undesirable ribbons of web material may be left trailing behind the point where the knife contacts the web.

With the above and other considerations in mind, it is proposed in accordance with the present invention to provide improved web roll replacement apparatus which may employ tacky adhesive to make the splice, and which employs the web running from the old web roll to the web consuming apparatus as the means for accelerating the new roll to running web speed. In a preferred form of the invention, the driving power from the running web is derived directly from the surface of that web and is applied to the surface of the new web roll to accelerate it. The invention further contemplates improved apparatus for severing the old web behind the splice while maintaining tension on the web, means for stopping rotation of the old web roll after the splice is made, and the combination of this web severing and roll stopping means with the new roll accelerating means referred to above.

The invention greatly simplifies the web replacement apparatus, reduces its cost and simplifies its operation. The use of the running web itself as the new roll accelerating means and the transmission of driving power from this web to the surface of the new roll insures the acceleration of the new roll to a surface velocity precisely equalling the running web speed, and this without the provision of any complicated or precisely designed roll accelerating drive means.

Various additional objects, advantages and characteristic features of the invention will be apparent from the ensuing description of a typical embodiment thereof. 7

In describing the invention in detail, reference'wili be made to the accompanying drawings in which a preferred embodiment of the invention has been illustrated. In the drawings:

Fig. 1 is a side elevation of simplified apparaspliced thereto and on the new web after the splice is made and the old web is severed. This is accomplished by the mechanism now to be described. I

As noted above, the running belts "and 29 are offset from their normal path by the idler rollers 3!. 32 and 33. These rollers are carried by the depending arms 63 and 64 which are pivotally connected at their upper ends to the shaft 05 which carries the idler rollers 34 (Fig. 2). As best shown in Figs. 3 and 4, the arrangement is such that the belts 28 and 28 are offset laterally from the running web 46 over a short span of its run adjacent and slightly above a horizontal plane through the axis of the reel.

The arms 63 and 64 are free to swing about their pivotal supports and hence follow the belts 20 and 29 as these belts are moved to various positions during movement of the reel.

Two knives 66 and 61 are carried by the reel arms I0 and I5. As shown in Figs. 1 and 2, the knife 60 is fixed to a knife shaft 08 journaled in, extensions 69 of the reel arms I4 and I5, and a spring surrounding the shaft 68 with its opposite ends fixed respectively to the shaft and to the adjacent reel arm extension 69 biases the shaft to turn to a position in which the knife 80 is extended to its cutting position as shown in Fig. 1. The knife 01 is similarly fixed to a shaft H journaled in reel arm extensions 12, and similarly biased by a spring 13. Resetting levers I0 and are respectively fixed to the front ends of the knife shafts 08 and II. A pin 16 fixed to the inner face of the front frame member H is disposed to contact the resetting levers I4 and IS in turn and move the knives to their retracted positions as the reel rotates.

The knife shafts 68 and H are held in positions to retract the knives $6 and 07 by latch mechanism which may be disposed on the outer face of the rearward reel arm I5. As shown in Figs. 2 and 10, latching cams I7 and 70 are respectively fixed to the ends of the knife shafts 60 and II and are engaged to hold the shafts in knife retracting positions against the bias of the springs '50 and it by latches l0 and 80 respectively. The latches l0 and 00 are respectively retractable by the energization of solenoids 8i and 82 fixed to the rearward face of the reel arm I5. The energizing circuit for these solenoids has been diagrammatically illustrated in Fig. 10. As there shown, one terminal of each solenoid al and 02 is connected to a slip ring 83 on the reel shaft. The other terminal of the solenoid Si is connected to a slip ring segment 80 extending around substantially half the circumference of the reel shaft, and the other terminal of the solenoid 02 is connected to a slip ring segment 85 extending around substantially the other half of the reel shaft circumference. A stationary contact 86 continuously engages the slip ring 83 and a stationary contact 81 engages one or the other of the se ments 8% or 85 depending on the position of the reel. An energizing circuit for the solenoids 8| and 82 is connected across the stationary contacts 80 and B1 and includes in series a source of electrical energy indicated at 00, the contacts 09 I0 aposition to' extend the v V :a similarly released and retracted ,wheriflthegeel is in such a position that this knife the running web. I, Means are preferably provided for .s opp tation of each depleted roll after magnet. running therefrom has been severed followin a splice. In accordance with the invention this means comprises a roll spindle brake, arranged to be applied when the web running from thejiepleted roll to the point where it has been spliced to a new roll web has been severed. The brake mechanism may be mounted on the inside of the rearward reel arm I5, as shown in Fig. 2. One form of brake mechanism is shown more in detail in Fig. 11. As there illustrated, each of the roll spindles 20 and I9 is provided with a brake drum 96 and 96'. The brake mechanisms for the respective spindles are identical and a description of one only will be given, corresponding parts of the other being designated by like reference characters with distinctive exponents. A pair of brake shoes 01 and 98 are carried on bell crank levers 90 and I00 respectively pivotally connected to the reel arm I5 at IM and W2. The bell crank levers are linked to move in unison by a pin I03 and a tensioned spring I08 connected between the brake shoe carrying arms of the levers biases them to move in a direction to apply the brake shoes to the drum 96. The lever I00 has an integral arm I05 extending beyond the pivot I02 and carrying a roller I00 at its end. The roller I00 engages a cam I01 fixed to the shaft 58 of the knife 66 (Figs. 2 and 11). The cam I01 has a depression I08 that receives the roller I06 when the shaft 68 moves to the position in which the knife 86 is extended to sever the web, as shown in Fig. 11. When the roller I06 falls into the depression 508, the bell crank levers Hi0 and 99 are moved about their pivots I02 and IN. by the spring I05 to apply the brake shoes 98 and 91 to is adjacent the drum 96 and so stop rotation of the spindle 20. carrying the depleted web roll. Resetting of the knife. to its retracted position causes the cam I 0J'to move the arm I05 to retract the brake shoes 91 and 98 and so release the spindle 20.

Electrically operated brake mechanism may be employed if desired, and one such arrangement is illustrated in Fig. 12. As there shown, a brake drum I I0 is provided on the spindle 20 and a pair of brake shoes III and! carried by levers Ill; and H4 are arranged to engage the drum H0 when the levers turn about the pivotal supports H5 and H5 by which they are secured to the reel arm I5. A compressed spring II! is disposed between the levers H3 and I and normally biases these levers apart to retract the brake shoes III and II! from the drum IIO. A pair of toggle links -l I1 and H0 connect the ends of the levers H3 and H4 and are pivotally connected together and to the armature I I9 of a solenoid I20 by a pin I2I and a link I2I'. With the described arrangement, energization of the solenoid I20 pulls the toggle links II! and III toward an aligned position and so separates the ends of the levers III and H4. forcibly applying theshoes III and II2tothedrum IIltostoprotation of the spindle 20. Similar brake mechanism operated by a solenoid I22 is provided on the other end of the reel arm II for retarding the opposite roll spindle.

The solenoids I20 and I22 are energized only when the corresponding knife 66 or 61 is extended. The knife shaft 60 for the knife 66 carries a cam I23 arranged to close a switch I24 when the shaft moves the knife to its extended web sellerin; position. Similarly a cam I26 on the shaft II of the knife 61 closes a switch I26 when the knife 61 is extended. The solenoid I20 is energized through a circuit including the switch I24, and the solenoid I22 is energized through a circuit including the switch I26, these circuits including the slip rings I21 and I23 which may be suitably mounted on the reel shaft II6, the contacts I26 and I30, and a source of energy represented at ISI.

Web rolls are prepared for use in my improved apparatus by applying adhesive to the outer surface of the leading end of the web thereon and releasably securing this web end to the roll surface. As shown in Figs. and 6, the leading end of the web on a new roll 2| may be trimmed to a central point and secured to the underlying web turn comprising the roll surface by a paster tab T.

The tab T is preferably of the type disclosed and claimed in my co-pending application, Serial No. 522,579, filed February 16, 1944, and entitled Splicing of webs, now Patent No. 2,386,- 345, dated October 9, 1945. This tab comprises a sheet of paper or other thin flexible material having a roll surface engaging portion I32 and an under web end engaging portion I33 separated by a weakened portion which may comprise a transverse roll of perforations I34. An outer web end engaging portion I35 is also provided and is suitably fixed to the under portion I33 adjacent but below the perforations I34. The adjacent surfaces of the under and outer web end engaging portions I33 and I35 as well as the under surface of the roll surface engaging portion I32, may be coated with gum or adhesive of the type used on gummed tapes or envelope flaps. as indicated at I36. The under surface of the under web end engaging portion I 33 carries a layer or coatweb at its leading end and the portion I32 is stuck to the adjacent roll surface, as shown in Figs. 5 and 6. A layer of adhesive I 38, which may be tacky pasting adhesive such as rosin glue, is applied to the outer surface of the leading end of the web with gaps I 39 in this layer in line with the traction rollers 5|, as shown in Figs. 5 and 6.

The operation of the described embodiment of my invention will now be described. Prior to the time that the roll I40 from which the web 46 is running to the web consuming apparatus has been substantially consumed, a new roll 2|, prepared as above described, is rotatively mounted on the spindles I9 between the reel arms I4 and I5. The reel is then turned in a. clockwise direction to approximately the position shown in Fig. 3, where the surface of the new roll comes in contact with the traction rollers 5|. The rollers 5| are rotating at a surface velocity equal to the web speed, being driven from the runnin web 46 by the roller 40 as explained above. The traction rollpoint where replacement is necessary, the reel is further rotated clockwise to a position in which the new roll surface contacts the running web 46. This is the pasting position, illustrated in Fig. 4. Thereafter, as soon as the leading end of the new roll web contacts the running web 46. the adhesive layers I36 stick the new roll web end to the running web to make the splice, whereupon the running web strips the new web end away from the new roll surface, breaking the tab T along the line of perforations I34, and the new web I 4| moves upwardly with the running web 46. Immediately after the new web end leaves the new roll surface, it moves past a pair of stationary contacts I42 which are mounted on an insulating support I43 suitably fixed in a position to contact the under surface of the new web, as shown in Figs. 3. 4, 9 and 10. The contacts I42 are disposed in line with the electrically conductive layer I31 on the under surface of the under tab part I33. When this conductive layer I31 engages the contacts I42, it electrically connects them and completes an energizing circuit for the relay 30, which circuit includes a source of electrical energy illustrated in Fig. 10 as a battery I44. Energization of the relay closes its contacts 88 and so energizes the solenoid 0| and releases the knife shaft 66, permitting the knife 66 to move out to its extended position and sever the old web 46 below the splice, as illustrated in Fig. 4. Movement of the knife shaft 60 to the knife extending position also results in stopping the rotation of the old roll I40 by applying the brake shoes 91 and 93 of the construction illustrated in Fig. 11 or the brake shoes III and I I2 of the construction of Fig. 12 to the brake drum 96 or 0 on the spindle 20, as above described. This stops rotation of the old roll substantially at the time when the web running therefrom is severed. and excessive runoff of the remaining web from the old roll is thereby prevented.

In the above described operation, the conductive layer I31 of the paster tab T acts as a web carried control actuator and initiates the web cutting and old roll stopping operations automatically immediately after the splice is made. This automatic operation is not in all cases essential, and when no conductive tab surface or other web carried control actuator is provided, the web cutting and old roll stopping operations can be manually initiated as by closing a manually operable switch I55 (Fig. 10) and thereby energizing the relay 90 to cause operation of the web severing and roll stopping mechanisms as described above.

It will be noted that throughout the above described roll accelerating and splicing operations, the running web is maintained in contact with the flexible tension belts 2B and 29 and is thereby maintained under tension as it runs to the web consuming apparatus. The offsetting rollers 3|, 32 and 33 permit the knives to completely sever the old web without interrupting the application of tension.

After the splice is made, the reel is further rotated clockwise to move the new roll 2| to a running position substantially as shown in Fig. 1, and the old roll I40 is then removed from the reel and replaced by a new roll 22.

The described operation is repeated whenever it is necessary to replace a depleted web roll. It will be understood that in successive splicing operations, the old web is severed below the splice alternately by the knives 66 and 61 which are turned to operative positions as the reel rotates to bring successive new rolls up to the splicing position.

Stationary flexible tension means may be used in place of the above described running belts. As illustrated in- Fig. '7, the belts may be replaced by the stationary straps I50 which are suitably 10 new web roll and a web running from said running roll substantially parallel to the cylindrical surface of said new 'roil, means for mounting said new roll to move toward said running web, a roller fixed at l5l below the reel'axis, runover offsetthe stationary tension straps is the -same as has been described above, the frictional engagement of the straps with the running web I53 serving to maintain this web under tension as it runs to the web consuming apparatus.

I claim:

1. In web splicing apparatus, in combination with a running web-and a new web roll rotatably mounted with its cylindrical surface substantially parallel to the running web and movable toward the running web, means for accelerating the new roll to a surface velocity approximating the speed of the running web comprising rotary means driven solely by the running web and engageable with the surface of the new roll when it is moved toward the running web.

2. In web splicing apparatus, in combination with a new web roll and a web running from another roll, means for rotatively mounting the new roll with its cylindrical surface parallel to the running web, and a driving connection simultaneously engageable with the surfaces of the new roll and the running web and driven by the running web for transmitting driving power from the 3. In web splicing apparatus, in combination with a new web roll and a web running from another roll, means for rotatively mounting the new roll with its cylindrical surface parallel to and movable into engagement with the running web, and a driving connection disposed in surface contact with and driven by the running web and engageable by the surface of the new roll as it moves toward the running web for transmitting driving power from the running web to the new roll to accelerate the new roll.

4. In web splicing apparatus, in combination with a rotatable running web roll, a rotatable new web roll and a web running from said running roll substantially parallel to the cylindrical surface of said new roll, means for mounting said new roll to move toward said running web. and new roll accelerating means engaging said running web and driven thereby and disposed in the path of movement of said new roll to be engaged by the cylindrical surface of said new roll when said new roll is moved adjacent said running web.

5. In web splicing-apparatus, in combination with a rotatable running web roll, a rotatable engaging said running web and driven thereby, and movable means driven by said roller and disposed in the path of movement of said new roll for engaging the surface of said new roll and accelerating the same when said new roll is moved adjacent said running web.

6. In web splicing apparatus, in combination with a rotatable running web roll, a rotatable new web roll and a web running from said running roll substantially parallel to the cylindrical surface of said new roll, means for mounting said new roll to move toward said running web, a roller engaging said running web and driven th'ereby, at least one traction roller continuously'engaging said running web engaging roller and driven thereby, and 'movable means for supporting said traction roller in the path of movement of said new roll while permitting movement of said traction roller out of said path, whereby upon movement of said new roll toward said running web said new roll is successively engaged and accelerated by said traction roller and moved past said traction roller into contact with said running web.

'7. In web splicing, apparatus, in combination with a running web and a new web roll, means for rotatably mounting said new roll with its cyclindrical surface parallel to and movable toward said running web, a roller engaging the surface of said running web which is adjacent said new roll surface, a plurality of traction rollers continuously engaging said web engaging roller and driven thereby, and means for supporting said traction rollers in the path of movement of laterally spaced portions of the cylindrical surfaces of said new roll, whereby upon movement of said new roll surface toward said running web said new roll is engaged and accelerated by said traction rollers.

8. In web splicing apparatus, in combination, a rotatable web roll reel, a running web roll and a new web roll respectively rotatably mounted on I said reel-rat circumferentially spaced positions.

means for conducting a running web from said running roll past and parallel to the cylindrical surface of said new roll, flexible tension means engaging the surface of said running web which is remote from said new roll surface, a roller engaging and driven by the surface of said running web which is adjacent said new roll surface and a traction roller engaging and driven by said roller and disposed for engagement with the cylindrical surface of said new roll when such surface moves closely adjacent said running web.

9. In web splicing apparatus, in combination with a running web roll, a web running therefrom and a new web roll, means for mounting said new web roll with its cylindrical surface parallel to said running web and movable into contact therewith to make a splice, flexible tension means engagingthe surface of said running web opposite that engageable by said new roll, and web severing means extending continuously transversely of the running web on the side thereof opposite that engaged by said tension means and movable into said running web to sever the same.

10. In web splicing apparatus, in combination with a running web roll, a web running therefrom and a new web roll, means for mounting said new web roll with its cylindrical surface parallel to said running web and movable into contact with the inner surface thereof to make a splice, flexible tension means engaging the outer surface of the running web along the span thereof between the running roll and the new roll, a web severing knife adjacent the inner surface of said span of the running web between said rolls, means for moving said knife across said span of the running web to sever the web and means for maintaining said tension means out of contact with said web at the point where said knife moves across said web span.

11. In web splicing apparatus, in combination with a running web roll, a web running themfrom and a new web rollgmeans for mountin said new web roll with its cylindrical surface parallel to said running web and movable into contact with the inner surface thereof to make a splice, flexible tension means engaging the outer surface of the running web along the span thereof between the running roll and the new roll, a web severing knife adjacent the inner surface of said span of the running web between said rolls, means for moving said knife across said span of the running web to sever the web and a plurality of offsetting rollers engaging said tension means and maintaining the same out of contact with said web along the portion of said web span where said knife moves to sever the web.

12. In web splicing apparatus, in combination, a web roll reel rotatable about an axis and including radially extending means for rotatably supporting a plurality of web rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to the cylindrical surface of a circumferentially adjacent roll on said reel, flexible tension means engaging said running web on the surface thereof remote from said reel, means for offsetting said tension means from the running web surface along a portion thereof which engages the running web between adjacent rolls. a plurality of extensible web severing devices carried by said reel each disposed between each circumferentially adjacent pair of rolls, and means responsive to the angular position of said reel for extending the web severing device that lies/adjacent the running web through such web at the point where said tension means is ofl'set by said offsetting means.

13. In web splicing apparatus, in combination,

a web roll reel rotatable about an'axis and including radially extending means for rotatably supporting a plurality of web rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to the cylindrical surface of a circumferentlally adjacent roll on said reel, means driven by said running web and engageable with the surface of a roll on said reel for accelerating such roll to running web speed, means for splicing the web on a roll so accelerated to the running web, a plurality of web severing devices carried by said reel, each disposed between each circumferentially adjacent pair of rolls and operative to sever the running web between such rolls after a splice is made, and means responsive to the angular position of said reel for selectively operating the web severing device that is adjacent said running web conducting means.

14. In web splicing apparatus, in combination, a web roll reel rotatable about an axis and including radially extending means for rotatably supporting a plurality of web rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to thecylindrlcal surface of a circumferentially adjacent roll on said reel, means driven by said running web and engageable with the surface of a roll on said reel for accelerating such roll to running web speed, means for splicing the web on a roll so accelerated to the running web, a plurality of web severing devices carried by said reel, each disposed between each circumferentially adjacent pair of rolls and operative to sever the running web between such rolls after a splice is made, and means responsive to both the splicing of the said roll web to the running web and the angular position of said reel for selectively operating the web severing device that is adjacent said running web conducting means after the splice is made.

15. In web splicing apparatus, in combination, a web roll reel rotatable about an axis and including radially extending means for rotatably supporting a plurality of web rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to the cylindrical surface of a circumferentially adjacent roll on said reel, a plurality of extensible web severing devices carried by said reel, each disposed between each circumferentially adjacent pair of rolls and operative when extended to sever the-running web between such rolls, a plurality of brake mechanisms carried by said reel for respectively stopping the rotation of each of said rolls, means responsive to the angular position of the reel for selectively extending the web severing device that is adjacent said running web conducting means, and means responsive to the extending of such web severing device for operating the brake mechanism for the roll from which the web is conducted by said web conducting means.

16; In web splicing apparatus, in combination, a web roll reel rotatable about an axis and ineluding radially extending means for rotatably supporting a plurality of web rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to the cylindrical surface of a circumferentially adjacent roll on said reel, means driven by said running web and engageable with the surface of a roll on said reel for accelerating said roll to running web speed, means for splicing the web on a roll so accelerated to said running web, a plurality of extensible web severing devices carried by said reel, each disposed between each circumferentially adjacent pair of rolls and operative when extended to sever the running web between such rolls after a splice is made, a plurality of brake mechanisms carried by said reel for respectively stopping the rotation of each of said rolls, means responsive to the angular position of said reel for selectively extending the web severing device that is adjacent said running web conducting means, and means responsive to the extending of such web severing device for operating the brake mechanism for the roll from which the web is conducted by said web conducting means.

1 1'7. In web splicing apparatus, in combination, a web roll reel rotatable about an axis and including radially extending means for rotatably supporting a plurality ofweb rolls at positions spaced circumferentially of said axis, means on one side of said reel for conducting a running web from one roll on said reel past and parallel to the cylindrical surface of a circumferentially adjacent roll on said reel, means driven by said running web and engageable with the surface of a roll on said reel for accelerating said roll to running web speed, means for splicing the web on a roll so accelerated to said running web, a plurality of extensible web severing devices carried by said reel, each disposed betwen each circumferentially adjacent pair of rolls and operative when extended to sever the running web between such rolls after a splice is made, a plurality of brake mechanisms carried by said reel for respectively stopping the rotation of each of said rolls, means responsive to both the splicing of said roll web to the running web and to the angular position of the reel for selectively extending the web severing device that is adjacent said running web conducting means, and means responsive to the extending of such web severing device for 14 operating the brake mechanism for the roll from which the web is conducted by said web conducting means.

OSCAR C. ROESEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,843,436 Wood Feb. 2, 1932 2,334,160 Caflrey Nov. 16, 1943 FOREIGN PATENTS Number Country Date 668,530 Germany Sept. 27, 1932

Images