US1665644A - Cutting mechanism for pulp and like machines - Google Patents

Description

April 10, 1928. 1,665,644

c. w. SPONSEL CUTTING MECHANISM FOR PULP AND LIKE MACHINES Filed June 14, 1927 1 4 sheets-shat 1 9 f 1 X J 2 $54 April 10, 1928. 1,665,644

'. c. w. sPoNsi-: L

CUTTING MECHANISM FOR PULP ANDKLIKE MACHINES April 10, 1928.

C. W. SPONSEL CUTTING MECHANISM FOR PULP AND LIKE MACHINES Filed June 1927 4 Sheets-Sheet 3 April 10, 1928.

C. W. SPONSEL CUTTING MECHANISMFOR PULP AND LIKE MACHINES 4 Sheets-Sheet 4 Filed June 14, 1927 wmmx Patented Apr. 10, 1928.

UNITED STATES PATENT OFFICE.

CHARLES W. SPONSEL, OF WETHERSFIELD, CONNECTICUT, A SSIGNOR 'IO CASE & HAR- SHALL, INCORPORATED, OF HARTFORD, CONNECTICUT, A CORPORATION.

CUTTING MECHANISM FOR PULP AND LIKE MACHINES.

Application flied ,June 14, 1927. Serial No. 198,768.

This invention relates to mechanism for severing or cutting paper or pulp which has been wound upon a roll or cylinder preparatory to stripping the severed material from the roll. In the present illustrative disclosure, I have shown my invention applied to a so-called wet machine, as it is particularly adapted for use in connection therewith.

The object of the invention is to provide cutting mechanism of this sort having various features of novelty and advantage.

More particularly, an aim of the invention is to provide improved means for severing or cutting the pulp which has been wound onto a roll without interrupting the rotary movement of the roll or stopping the machine; that is to say, by the use of my improved mechanism the web of pulp may be continuously supplied to the make-up or paper roll, resulting in uniformity in the product which would not be possible if it were necessary to stop the machine and the supply of pulp web thereto, as has heretofore been the case.

A further aim of the invention is to provide an improved mechanism by means of which the pulp wound upon the roll may be cut on a line parallel to the axis of the roll, thus producing sheets with squared ends.

A further aim of the invention is to provide improved cutting mechanism which is relatively simple in construction, which is effective in operation, which is rigid and durable, which is capable of cutting tough, heavy stock of any desired width or thickness, and which will make a clean, accurate cut.

Other objects will be in part obvious and in part pointed out more in detail hereinafter.

The invention accordingly consists in the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the appended claims.

In the accompanying drawings, wherein I have shown, for illustrative purposes, one of the many embodiments which my invention may take:

Figure 1 is an elevational view looking at the left hand end of the machine, the cutting mechanism being illustrated in lowered or normal position;

F g. 2 is a horizontal sectional view;

Fig. 3 1s a partial sectional view taken substantially on line 3-3 of Fig. 2;

Fig. 4 is a detail view of the knock-off devlce by n1cans of which the cutter mechanism 1s disengaged from the make-up roll;

Fig. 5 1s a detail view of the cutter mecha n1sm per se as viewed from the bottom when the parts are in the position shown in Figs. 1 and 2;

Fig. 6 is a sectional view through the cutter slide, this view being taken substantially on line 66 of Fig. 5;

F 1g. 7 is a sectional view showing the connection between the cables and the knife, this view being taken substantially on line 77 of Fig. 5; and

Fig. 8 is a detail view of the trip which controls the drive for the cutter mechanism, this view being taken substantially on line 88 of Fig. 1.

Referring to the drawings in detail, the wet machine illustrated is of the usual or well-known type, it being understood that the specific wet machine shown is by way of illustration only and is not tov be taken as restrictive of my invention. The wet machine has a pair of side frames A suitably tied together and in which is journalled a pair of base rolls B, B, the forward one of which may be driven through the gears C. Resting upon these base rolls is the paper or make-up roll D on which the web of pulp is wound, the pulp being delivered to the makeup roll by an apron or felt E in the usual manner. The make-up roll is driven due to its frictional engagement with the driven base roll B. The make-up roll D has gudgeons F journalled in bearings G which are connected through levers H to screws I which extend through bearings K in the upper ends of the side frames. On these screws are hand wheels L. The purpose of connecting the bearings G to the screws I is to permit the make-up roll to be raised out of engagement with the base rolls when the machine is not in use. The levers H may be pivotally connected to the frames A as at M.

In accordance with the present invention,

my improved cutting means is in the form of a knife 10 carried by a support for sliding movement longitudinally of the make-up roll during the cutting operation, and the support, during the cutting operation, is movable in unison with the make-up roll Whereby the knife will take a out which is parallel to the axis of the make-up roll, thus. producing square sheets. In the present illustrative disclosure, the knife support is journalled for movement in an are about the axis of the make-up roll. This support includes a cross bar 11 extending longitudinally of and beyond the ends of the makeup roll and a pair of brackets 12 12 carrying the cross bar at their free en s and journalled on the gudgeons F of the make-up roll. The cross bar may be a built-up struc ture but it is here shown as comprising a casting generall of L shape in cross section and provde with a reinforcing web or brace 13. The brackets 12 are similar in construction except that one is left hand and the other is right hand. Each bracket has anrarm 14 journalled on the gudgeon between the make-up roll and the bearing G. Extending outwardly from each arm and concentric to the gudgeon F is a connecting web 15 carrying on its outer end a vertical web ,16 journalled on the outer end of the gudgeon associated therewith.

The knife 10 is pivoted as at 20 to a slide 21 mounted for sliding movement on the under side of the cross bar 11, as shown most clearly in Fig. 3. This knife has a cutting or ripping edge 22, and the knife is angularly inclined with respect to the cylinder, as shown in 'Fig. 5. The cylinder has, in its periphery, a longitudinal y extending groove 23 in which the forward end of the knife is adapted to ride during the cutting operation. This groove may be provided by a channel piece 24 carried by the make-up roll. The slide 21, together with the knife carried thereby, is moved longitudinally of the make-up roll during the cutting operation by a cable 25 which passes over a sheave 26 journalled on the left hand end of the cross bar 11, then under a guide pulley 27 carried by the left hand bracket 12, then over a guide pulley 28 'ournalled on a pin 29 extending from the le t hand gudgeon F of the make-up roll, and then about a large sheave 30 which is adapted to be intermittently driven, as hereinafter described more in detail. In order to withdraw the cutter slide back to its normal position, that is to say, the right hand end of the cross bar, a cable 31 is provided. This cable passes about sheaves 26, 27 and 28 and is wound ,about a large sheave'30, these sheaves being generally similar in construction and location. to the sheaves about which the cable 25 passes but being located at the right hand end of the machine. The cable 31 is passed about the sheaves 27 and 28 and is wound about the large sheave 30' in a direction opposite to that in which the cable 25 is wound about the sheaves at the other side of the machine in order that, when one cable is wound about one of the sheaves, the other cable will be payed off at the same rate from the other sheave, the large sheaves being of 7.

the same diameter and being fixed to a shaft 32 so that they will rotate in unison. The cables 25 and 31 are connected to the opposite ends of a link 33 which, in turn, is p1votally connected to the tail 34 of the knife by a screw 35, the purpose of this arrangement being that, when a force is applied to the cable 25 to effect a cutting operation, the knife 10 will be swung about the pivot 20 so that the free end of the knife Will engage in the groove 23 of the make-up roll and after the cutting operation has been com pleted and it is desired to move the slide back to the right, the pulling-force of the cable 31 will swing the knife in a direction away from the make-up roll so that upon movement of the slide towards the rig t, the knife will not engage the periphery of the make-up roll and injure the pulp which is being wound thereon. In order to limit the extent of pivotal movement of the knife the.

groove 36 of the slide in which the tail of the knife is located has an abutment or side wall 37 against which the tail of the knife engages when the slide is moved on its operative stroke, and this groove has an abutment '38 against which the tail of the knife engages when the slide is moved on its inoperativestroke. Frictional means between the slide 21 and the bar 11 is provided in order to insure that the lmife will be swung clear of the'make-up roll before the slide is moved on its inoperative stroke. This frictional means, in the present illustrative diselosure, includes a shoe 39 carried by'the slide and urged against the bar by a spring 40, as shown most clearly in Fig. 6.

For the purpose of preventing the knife from pulling thepulp along the line of cut away from the make-up roll and thus prevent tearing and a jagged unsightly cut, means is provided to each side of the line of cut for limiting the extent to which the knife can pull the pulp away from the roll. To this end, there is provided, in the present illustrative disclosure, a holding strip 45-extending longitudinally of the make-up roll and above the line of movement of the knife, this strip being carried by the cross bar and having its operative edge 46 so spaced from the periphery of the make-up roll that this. strip will not interfere with the winding of away from the roll to the other side of the knife, in the present instance below the line of cut, there is provided a roller 47 having a relatively sharp edge 48. This roller is carried by the slide 21 in such manner that, when the cutting device is in inoperative position, the roller is to the right hand end of the area on which the web is wound, and when the knife is moved on its operative stroke, the roller will engage and bite into the pulp adjacent the line of cut and imme diately adjacent the knife. In the present illustrative disclosure, the strip 45 is ad justably connected by bolts 49 to plates 50 secured to the upper side of thecross bar 11. The roller 47 is carried by a plate 51 fixed to the bottom of the slide 21 by bolts 52. In order to eliminate friction, the roller may be provided with an anti-friction bearing 53. The right hand end of the holding strip 45 is provided with a cam member 54 which holds the knife in the dotted line position shown in Fig. 5 when the knife is in its extreme right hand location. The distance between the end of this cam and the right hand end of the make-u roll is less than the width of the end of the nife as measured in the direction of the length of the roll. The purpose of this arrangement is that in the event the knife should be injured and not properly register with the slot 23 in the make-up roll, it cannot come against the right hand end of the cylinder, resulting in considerable damage, for the cam 54 would cause the knife to ride onto the periphery of the cylinder.

As previously stated, operation, the cutting mechanism moves with the make-up roll. In order to bring about this movement, means is provided for engaging the knife support with the makeup roll when the pulp has been built up to the desired thickness on the make-up roll. This means may be automatically controlled, but, in the present instance, I have shown a manual control. The means includes a pair during the cutting of aligned driving lugs 60 and 61 on opposite ends of the make-uproll and pins 62 and 63 slidably mounted in the arms 14 and adapted to be respectively engaged with the driving lugs. The lugs 60 and 61 and the pins 62 and 63 are so located that, when these members are engaged, the knife is in proper alignment with the groove 23 in the make-up roll. For moving the pins into engagement with the driving lugs, these pins are connected by plates 64 and 65 respectively to rods 66 and 67 mounted for sliding movement on top of the cross bar 11. The adjacent ends of the rods 66 and 67 are provided with racks 68 with which mesh gears or gear segments 69 one of which is provided with an arm 70 pivotally connected to an operating rod 71 having a handle 7 2. It will be understood that, when the handle 72 is pulled to the right, referring to Fig. 2, the

pins will be moved towards each other and into the line of movement with the driving when the support has reached its highest position, there is provided a knock-oti' device which includes the pivoted linger 7 5 shown most clearly in Figs. 1 and 4. This finger is carried by a rod 76 mounted for turning movement in bearings 77 carried by the side frame of the wet machine. The forward end of the finger is wedge shaped or pointed, as illustrated. The finger is normally held in the dotted line position shown in Fig. 4 by a spring 78. The plate 64 which connects the left hand pin 62 to the rod 66 has a cam surface 7 9 and the left hand arm has a cam surface 80 opposed to the cam surface 79. As the support reaches its uppermost position, the finger engages the cam surfaces 79 and 80 and moves the plate 64 to the left, that is, from the dotted line position shown in Fig. 4 to the full line position shown in that figure and Fig. 2. \Vhen this takes place, the pin 62 is withdrawn and, at the same time, the pin 63 is withdrawn, ac-

tuation of the pin 63 being effected through 1 the rods 66 and 67 and the gears 69.

In the present illustrative disclosure of my invention, the shaft 32, on which the sheaves 30 and 30 are lixed, is driven from the make-up roll through the support for the knife in order that the movement of the knife longitudinally of the roll and concentrically of the axis of the roll is in proper timed relation. In the present instance, there is secured, adjacent each end of the shaft 32,a pinion 85, and secured to each of the brackets 12 is a segment 86, the segments being in meshing relation with the gears, as illustrated. outer webs 16 of the brackets 12 by screws 87. Each bracket, together With'its asso ciated segment 86, constitutes, in etl'ect, a lever, and when the pins are engaged with the driving lugs 60 and 61, the knife support rotates with the make-up roll, and the sheave 30 is driven in a direction to move the knife on its operative stroke. At the same time, the sheave 30 is driven and pays off the cable 31. When the knife support is in its normal or lowered position, as shown in Figs. 1, 2 and 3, a shoulder or stop 90 on the rear edge of the cross web 15 of each bracket 12 engages against a side frame A. In order to positively limit the upward movement of the support, each bracket has a pair of shoulders 91 adapted to engage shoulders 92 on the opposite sides of each lever H. The cross webs 15 are notched as at 93 so asto accommodate the levers H when the support The segments are secured to the .102 adapted, when the support reaches its uppermostposition, to cam the latch 100 back and ride into the hook of the latch. A spring 10;} normally urges the latch into holding position. In order to disengage the latch from the stud 102 to permit the knife support to be swun down into normal position, there is provi ed a lever 104 pivoted as at 105. It will be seen that, when the forward end of this lever is swung down, the rear arm will move the latch back so as to clear the stud and, thereafter, the right hand sheave 30 may be manually turned to swing the support to the normal position and, at the same time, wind up the cable 31 in order to move the knife on its inoperative stroke."

If desired, power means may be employed for aiding the roll I) to lift the support. In

the present instance, there is shown in the drawings an arrangement by means of which the shaft 32 is positively driven from the driven base roll B. Slidably mounted on the left hand end of the shaft 32 is a clutch sleeve 110 having a friction disk 111 adapted to engage the hub of thesleeve 30. The sleeve 110 carries a sprocket 112 which is driven by a chain 113 froma sprocket 114 fixed to a trunnion of the base roll 13. Associated with the clutch sleeve 110 is an operating lever 115 pivoted as at 116. The rim of the sheave 30 carries a trip 117 which controls the engagement and disengagement of the clutch. The trip 11'? is so located that, innnediately after the make-up roll has picked up the support and started the sheave 3O rotating, the clutch is engaged,whereafter the shaft 32. is positively driven through the chain 113. As previously stated, to lower the support and move the knife on its inoperative strike, the sheave 30' is rotated by hand in the opposite direction so that sheave 30 will pay olf and sheave 30 will take up. As the sheaves 30 and 30 are fixed to the shaft 32, these sheaves will be rotated in unison and, in order to avoid engagement of the clutch (luring manual reverse rotation of the sheaves, there is provided on the lever 104 a lug 118 which is adapted to engage behind the lever 115 andthus prevent this lever from being thrown by the spring 119 into clutch engaging position. The knife support may be counterbalanced by weights 120 in order to relieve the roll of an excessive load and to. facilitate manually lowering the support to normal position.

A brief description of the operation of the entire mechanism will now be given. It is understood that the make-up roll is continuously driven through its engagement with the driven base roll B, and the web of pulp is transferred from the apron E onto the make-up roll. When pulpof the desired thickness has been built up on the make-up roll, the operator will pull the operating rod 71 to the right, referring to Fig. 2, thereby bringing the pins 62 and 63 into the path of movement of the lugs 60 and-61, respectively. These lugs, when they engage the pins, will cause the knifesupport to move in unison with the make-up roll and, through the segments 86, the shaft 32 will be rotated in a direction to cause the cable 25 to be wrapped upon the sheave 30 with the result that the knife will be moved on its operative stroke. Upon an initial pull of the cable 25, the knife 10 will ride out of engagementwith the cam member 54 and will swing about the pivot 20 so that the free end of the knife will engage in the groove. 23 of the make-up roll before the knife reaches the edge of the pulp. Immediately after the make-up roll has picked up the support, the trip 117 rides from under the lever 115 so that the clutch, including the sleeve 110, is engaged and, thereafter, the support is raised by the rotary movement of the make-up roll and through the chain 113. As the support approaches the limit of its upward movement, the knock-off device comes into play, that is to say, the wedge shaped member 75 moves the pins 62 and 63 outwardly, as indicated in Fig. 4, and, at about the same time, the stud 102 is hooked by the latch 100 and the trip 117 disengages the clutch. The makeup roll will continue its rotation while the knife support will remain in its raised position. The severed web is now stripped from the roll without stopping the rotation of the roll or the delivery of the web to the make-up roll. By the time that the support has reached its uppermost position, the knife has completed its operative stroke, and the knife and roller 47 are clear of the left hand edge of the sheet. The severed web having been skinned from the roll, the knife support is now manually lowered before the pulp has been built up to thielmess. To permit of this, the lever 104 is swung down so as to release the latch 100 from the stud 102 and also to bring the lug 118 into a position where the clutch cannot be engaged when the trip 117 is moved out of operative position. With the lever 104 held down, an operator will manually turn the sheave 30' with the result that the cable 31 will first swing the knife about the pivot 20 so that the end of the knife will clear the make-up roll on its inoperative stroke and then (the tail end knife having come into engagement with the abutment 38 on the slide) the knife and slide will be moved ,in unison on its inoperative stroke and to the position shown by dotted lines, Fig. 5. Also, when the sheave 30' is thus rotated, the support will be lowered through the gears 85 and segments 86.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.-

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

I claim as my invention:

1. In combination, a roll on which a web is adapted to be wound, a knife mounted for movement longitudinally of the roll and held against movement radially with respect thereto during the cutting operation, and means for moving the knife longitudinally of the roll to effect a ripping cut in the Web parallel to the axis of the roll.

2. In combination, a continuously rotated roll on which a web is adapted to be wound, a knife for severing the web, and mechanism for moving said knife longitudinally of said roll and in an arc concentric to and in unison with said roll, said knife having its cutting edge disposed at an angle to the length of said roll.

3. In combination, a roll on which a web is adapted to be wound and having a longitudinally extending groove in its periphery, a knife supported externally of said roll for movement longitudinally of said roll and against radial movement with respect there to, and means for moving said lmife in said groove during the rotation of said roll.

4. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, means for moving said support in an arc in unison with said roll, and means for moving said knife on said support while the latter is moving with said roll, through a distaplce at least as great as the length of the re 5. In combination, a continuously rotated roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, said knife having a cutting edge disposed at an angle to the length of said roll, means for moving said support in an arc in unison with said roll, means for engaging said moving means preliminary to the cutting operation, means for automatically disengaging said moving means subsequent to the cutting operation, and means for moving said knife on said support while the latter is moving with said roll.

6. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, means for moving said support in an arc in unison with said roll, said knife having a cutting edge so disposed and said means so moving said knife as to cause said knife to cut successive portions of the web transversely thereof, means for engaging said moving means preliminary to the cutting operation, means for disengaging said moving means subsequent to the cutting operation, and means driven through said support for moving said knife on said support while the latter is moving with said roll.

7. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, said knife having a cutting edge disposed at an angle to the length of the roll, means for engaging saidsupport with said roll whereby the same rotate in unison through a predetermined are, means for automatically disengaging the support from said roll, and means driven'in timed relation to the movement of said support for moving said knife on its operative stroke.

8. In combination, a roll on which a web is adapted to be wound, a support having a bar extending longitudinally of said roll and movable in an arc concentric to said roll, a knife slidably mounted on said support, a cable connected to said knife for drawing the same longitudinally of said bar, a sheave about which said cable is wound, and means for moving said support with said roll through a predetermined arc and rotating said sheave in timed relation to the movement of said support.

9. In combination, a roll on which a web is adapted to be wound, a support having a bar extending longitudinally of the roll and a pair of arms straddling the roll and journalled for swinging movement about the axis of the roll, a knife slidably mounted on said bar, a cable connected to said knife for drawing the same longitudinally of the bar, a sheave about which said cable is wound, a driving connection between sa d support and sheave, means for engaging sa d support with said roll whereby the same Wlll move in unison, and means for automatically disengaging said support from said roll.

10. In combination, a roll on which a web is adapted to be wound, a support 111- cluding a bar extending longitudinally of said roll and a pair of brackets at opposite ends of said roll and mounted for swinging movement about the a'xis thereof, a knife slidably mounted on said bar, a sheave, a cable connected to said knife and wound about said sheave, gearing between said support and sheave whereby said sheave is rotated when the support is moved, and means for moving said support in unison with said roll through a predetermined are.

11. In combination, a roll on vhich a web is adapted to be wound, driving lugs on the opposite ends of said roll, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, pins carried by said sup ort and adapted to be engaged with said riving lugs, means for engaging said pins with said driving lugs, means for automatically disengaging sald pins from said driving. lugs, and means for moving said knife on said support while the latter is moving with said roll.

12. In combination, a roll on which a web 1 is adapted to be wound, a support mounted for-movement in an arc concentric to said roll, a knife slidably carried by said support, said knife having a side cutting edge disposed at an angle to the length of the roll, means for moving said support in an arc in unison with said roll, means for moving said knife on said support while the latter is moving with said roll, means for moving said support back to normal position, and means for moving said knife on its inoperative stroke while said support is being moved back to its normal position.

13. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in van arc concentric to said roll, a knife slidably carried by said support, means for moving said support in an arc in unison with said roll, a pair of sheaves driven in unison and connected to said support so as to rotate in timed relation thereto, and cables connected to said knife and wound about said sheaves.

14. In combination, a roll on which a web is adapted to be wound, a support including a bar extending longitudinally of said roll and a pair of brackets journalled for swinging movement about the axis of said roll, a knife slidably mounted on said bar, a shaft extending longitudinally of said roll, a sheave on each end of said shaft, a driving connection between each bracket and said shaft whereby said shaft is rotated when said support is moved about its pivot, cables connected to said knife and extending in opposlte directions along saidbar, said cables emg respectively wound about said sheaves n opposite directions, and means for mov- "ing said support with said roll through a predetermined are.

15. In combination, a roll on which a web isadapted to be wound, a support including a bar extending longitudinally of said roll and a pair of brackets mounted for swinging movement about the axis of said roll, aa knife slidably mounted on said bar, a shaft extending longitudinally of said roll, a pair of sheaves on said shaft, a gear segment carricd by each bracket, gears on said shaft respectively meshing with said segments, a pair of cables connected to said knife and extending in opposite directions along said bar and wrapped in opposite directions about the respective sheaves, means for engagin said support with said roll whereby sai support will move with said roll through a predetermined arc, and means for automaticafiy disengaging said support from said ro 16. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife slidably carried by said support, means for moving said support in an arc in unison with said roll from one end of the roll to the other, means for moving said knife on said support while the latter is moving with said roll, means for disengaging said moving means when the support has been brought to raised position, means for holding said support in raised position, means for moving said support down to normal position, and means for moving said knife on its inoperative stroke while the support is being brought to normal position.

17. In combination, a roll on which a web is adapted to be wound, a support mounted for movement in an arc concentric to said roll, a knife carried by said support for slidable movement longitudinally of said roll and held against radial movement with respect to said roll during the cutting operation, means driven through said support for moving said knife longitudinally of said roll during the movement of the support, means through which said roll moves said support, and power driven means for aiding said roll to move said support. 18. In combination, a roll on which a web s adapted to be wound, a support includmg a cross bar extending longitudinally of sa1 rolland a pair of brackets mounted for swinging movement about the axis of said roll, a knife slidably mounted on said bar, a shaft extending longitudinally of said roll, sheaves on said shaft. gearing between said brackets and shaft whereby said shaft and sheaves are rotated when said support is swung about its axis, cables between said sheaves and knife, power driven means including a clutch associated with said shaft, and means associated with said sheaves for controlling said clutch.

19. In combination, a roll on which a web is adapted to be wound, a su port including a bar extending longitudina 1y of said roll and a. pair of brackets mounted for swingt an ing movement about the axis of said roll, a knife slidably mounted on said bar, a shaft extending longitudinally of said 'roll,- a sheave on each end of said shaft, cables connected to said knife and extending in opposite'directions along said bar, said cables being wound in opposite directions about said sheaves, segments carried by said brackets, gears on said shaft respectively meshing with said segments, means for engaging said support with said roll whereby the same are moved in unison through a predetermined are, means for holding said support'in raised position, means for disengaging said last mentioned means to permit the support to be lowered to normal position, power driven means including a clutch associated with said shaft, a trip on one of said sheaves and arranged to permit engagement of said clutch u on initial movement of said support an to disengage said clutch after said support has reached its uppermost position, and means on said disengaging means for preventing engagement of said clutch while .said support is being moved to normal posi tion.

20. In combination, a roll on which a web isvadapted to be wound, a knife for cutting said web, and means to each side of said knife for limiting the extent to which said knife can pull the web away from said roll.

21. In combination, a rotary roll on which a web is adapted to be wound, a support, a slide mounted on said support for movement across the roll, a knife carried by said slide, a strip on saidsupport to one side of said knife, and a roller on said slide to the other side of-said knife, said strip and roller being arranged to limit the extent to which said knife can pull the web away from the roll during the cutting operation. Y

22. In combination, a roll onvwhich a web is ada tedto be wound and having a longi tudina 1y extending groove'in its periphery,

a support adapted to move with said roll through a predetermined arc, a slide mounted on said support, a knife carried by said slide and adapted to engage in said groove during the cutting operation, a trip on said support to one side of said knife, and a roller on said slide to the other side of said knife and having a peripheral edge adapted to bite into the web during the cutting operation, said trip and roller being arranged to limit the extent to which said knife can pull the web away from the roll, said roller and knife in each extreme position of the slide being clear of the web being wound upon the roll.

23. In combination, a roll on which a web is adapted to be wound, a support extending longitudinally of the roll, a slide mounted on said support, a knife pivoted on said support and having limited movement relative thereto, means connected to said knife arranged to throw the knife into operative "position and move the slide on its operative limited 'movement relative thereto, cables connected to said knife for moving the slide in opposite directions, and friction means between said support and slide.

25. In combination, a continuously rotated roll on which a web is adapted to be wound, and means including a knife movable longitudinally of and rotatable with said roll during the cutting operation for severing the web on said roll, said knife being held against radial movement with respect to said roll during the cutting operation.

' l CHARLES W. SPONSEL.

Images