US1402451A - Paper-cutting device for paper-making machines - Google Patents

Description

v Patented am 3, 3 $HEETS-SHEET I.

vll I H In 1' 7 W. H. SHELLINGTON.

PAPER CUTTING DEVICE FOR PAPER MAKING MACHINES. APPLICATION FILED SEPT. 21. 1918. RENEWED-NOV. 23, 1921.

INVENTOR ATTORNEY W.'H. SHELLINGTON.

PAPER cunmfe DEVICE FOR PAPE R MAKING MACHINES. APPLICATION FILED SEPT- 27,19l8- RENEWED NOV- 23, I921.

1,402,451. y Patented Jai1.3,1922, v a SHEETS-SHEET 2.

iNVENTOR ATTORNEY W; H! SHELLINGTONL' PAPER CUTTING DEVICE FOR PAPER MAKING MACHINES. APPLICATlON FILED SEPT.27,19I8- RENEWED NOV. 23, 1921.

uuvillili ATTORNEY 3 SHEETSSHEET 3.

INVENTOR Patented Jan. 3, 1922.

7 rolls smoothly and uniformly;

WILLIAM H. SHELLING TON, OF TICONDEROGA, NEW YORK, ASSIGNOR To IN TIONAL PAPER- COIVIPANY, A CORPORATION runneon NEW YORK.

rarnn-ou'rrms nnvicr. For. PAPER-MAKING MACHINES.

Application filed September 2?, 1918, Serial No. 255,936. Renewed November 23, 1921.

To (ZZZ 10 7mm it may comer-n Be it known that I, WILLIAM H. $HEL- riNcroN, a citizen of the United States, re-

siding at Ticonderoga,

' in they county of Essex and State of New" York, have invent- .ed certain new and useful Improvements in larly to mechanical means for severing or cutting the paper sheet or Web to facilitate its introduction or stacking in the calender rolls. j

In the operation of paper. making machines, the paper sheet from the forming wire passes alternately around upper and lower drying cylinders by which the damp sheet is dried, thence to calender rolls which give the sheet its calendered finish, and is finally wound in a roll on a winding roll. It not unfrequently happens that in the passage of the sheet through thermachine, it breaks or partsbefore it reaches the calender rolls, and consequently it is necessary, after the travel ofthe new sheet has been re-established, to enter the front end of the same into the calender rolls. This reentry of the sheet in the calender rolls, or stacking as it is termed in the trade,.has been the cause of annoyance, delay and wastage of paper, the practice so far as I am aware, being for'the attendant to tear the new sheet across on a diagonal line where it passes from the last drying cylinder, in order to leave a tongue or projecting portion at one edge to be entered in the calenderrolls. The operation thus performed is slow and uncertain and resultsin an accumulation and loss of the paper as it continues to pass from the drying cylinders, while the attendant'is inserting the end in the calender rolls. The operation also re quires the attention and aid of two or more attendants who usually work at this partof the machine. A further objection is, that, due to the uncertain'and uneven tearing action as performed hand,'there is liability of the paper failing to enter the -calender and it may become bunched and clog the calender rolls and cause breakage or serious injury.

My invention aims to overcome these ob- Specification of Letters Patent.

Patented Jan. 3, i922.

jections, and it consists in the provision of a mechanical cutting device which may be operated by a single attendant to cut or incise the sheet, preferably where it, passes from one drying cylinder to the neXt at the end of the series, the cutting action being speedily performed in a uniform manner, and such that a tongue or projection will be left'on the end of the sheet to facilitate 1ts entry into the calender rolls. As a result, the end of the new. sheet may be e11- tered by the attendant into the calender rolls in a uniform and smooth manner and without the liability of the formation of bunches or the clogging of the rolls, and with a minimum of waste.

Theinvention consists also in so constructing and mountingnthe cutting device that its actuation to incise the sheet will be effected by power means under the control of the attendant.

In the acompanying drawings:

Fig. 1 is a side elevation of the dry end of a paper making machine having my invention embodied therein;

Fig. 2 is a similar view on an enlarged scale, of the terminal portion of the series. of drying cylinders with my cutting device applied.

Fig. 3 is an elevation on an enlarged scale of the cutting device and one form of operating means, said parts being detached from the machine.

Fig. 4: is a. similarfview showing a form of power means for operating the cutting devices.

Fig. 5 is a vertical cross section. on the line a-a of Fig. 4:.

Fig. 6 is an end elevation of the device shown in Fig. 4 looking in the direction of the arrow in said figure.

Fig. 7 is a view in the nature of a diagram showing how the paper sheet is out by the device.

j Referring to the drawings:

Referring particularly to Fig. 1, l designates the terminal portion of the series of drying cylinders arranged as'usual in the sustaining frame 1 in upper and lower rows, with-the cylinders 1 of the upper row alternating with the cylinders 1 of the lower row; and 2 designates the paper sheet or web from the forming wire, (not shown), which sheet passes continuously in the rotation of the drying cylinders alternately around the Serial No. 517,381.

tained as usual one above the other in suitable sustaining frame 3, around which rolls the dried sheet passes from the last drying cylinder, and by which the sheet is given a finished or calendered surface; and 4: designates a winding roll rotatably mountedin a frame F, and onto which the paper sheet is wound after it leaves the calender rolls.

The. foregoing parts may be of the usual and ordinary construction well known to those skilled in this art, and in themselves they form no part of the present invention.

5 designates the cutting device constituting the present invention, which device is preferably in the form of a pointed cutter or needle 5, and which cutting device is sustained preferably by the frame of the drying cylinders so that it will act on the paper sheet where it passes from the last lower drying cylinder l 'to the last upper drying cylinder 1, the said needle being so sustained and mounted that it may be swung by the attendant inwardly from a normal inoperative position out of contact with the paper sheet, to an operative position in contact with the same, and may then be moved transversely of the direction of travel of the sheet to incise the same cross-wise.

To effect these actions, the needle is fixed at its inner end to a slide or block 6 so as to extend radially therefrom, which slide is mounted to move back and forth in a casing orguide tube 7, with the needle projecting through a longitudinal guide slot 8 in the tube. The guide tube extends from front to rear, parallel with the axes of the drying cylinders and ismounted at its ends to rock in bearings 9 and 10 sustained respectively by front and rear brackets 11 and 12 fixed to the frame 1 at its front ant rear and projecting inwardly toward the paper sheet. The front bearing 9 is formed in its upper side with a slot 13 through which projects a handle 14 having its inner end fixed to the guide tube, so that the latter may be rocked by the handle back and forth, which action, due to the engagement of the walls ofthe slot 8 with theneedle, will correspondingly rock the latter. The length of the slot 13 and the relation of the parts is such that when the handle is swung to the left as shown in Fig. l the needle will be sustained in an outward inoperative position with its cutting end free of the paper sheet as shown by dotted lines in Fig. 2, and when the'handle is moved inwardly, the needle will be moved to an operative position extending inwardly toward the paper with its cutting end in engagement withthe same. The slide has tached to its front end as shown in 3, an

operating member 15 in the form of a piece of flexible hose" which extends outwardly beyond the end of the tube within reach of the attendant, and by means of which the slide and needle carried thereby may be moved longitudinally along the tube to cause the cutting end of the needle to traverse the paper sheet and cut or incise the same.

Theoperation of the mechanism so far described is as follows: Assume-that the sheet has parted or broken and the new sheet has been started by the attendants and is feedingthrough the drying cylinders and passing downwardly from the last cylinder as shown by dotted lines in Fig. 1; and assume also that thecutting needle is in an outward inoperative position as shown in said figure with its cutting end free of the paper sheet passing upwardly from the last lower drying cylinder to the last upper cylinder. The attendant while the sheet is traveling, grasps the handle 14: and swings th same inwardly, thereby correspondingly swinging the cutting needle and engaging its cutting end with the traveling sheet, care being taken that the slide 6 will be at the forward part of the guide tube in such position that the needle will engage the sheet some distance, say 12 to 18 inches, from its I come from the drying cylinders and the needle continues to incise the same, the separated tongue will increase in length, and

the attendant takes hold of the free endof the tongue and carries it up to the top calender rolls and enters the same therebetween. The rotation of the calender rolls begins to feed the tongue therethrough,

while the main portion of the sheet runs.

down from the last drying cylinder, and when the tongue is feeding properly through the calender rolls, and the sheet is pulling tight between the two last drying cylinders, the attendant by means of the operating hose 15, moves the slide and attached cutting needle longitudinally along the guide tube rearwardly through the remaining width of the sheet. This action will form an incision B in the sheet extending cross wise thereof, which, due to the continued travel of the sheet, will be on an inclination. After the sheet has been thus finally severed, the attendant grasps the handle 14 and swings the needle outwardly to an inoperative position, and then byineans of the hose 15, the slide anclattached needle'are drawn by the frame 1 at the back.

' tion in a cord orv cable 19 which guide tube, by

I propose to provide power means for moving the cutting needle along the guide 1 tube, and controlling means for throwing the power means into action, so that after the needle has been swung into operativeposi-- 4 engagement with the sheet, the stacker or attendant working at the calender rolls, may throw the power mechanism into action and cause the needle to traverse the sheet and efl ect the cross-wise out, without theaid of other attendants. In the present instance this action is effected by the mechanism shown in Fig. 4:, where it will be seen that a cord or cable 16 hasits opposite ends connected respectively with the opposite ends of the slide 6 within the guide tube ,as at 16 and 16 and passes between its ends outside the tube and around vertical guide pulleys 17, 17 rotatably sustained by the brackets 11 and 12 outwardly of the ends of the tube and below the 18, Figs. 1 and t, is attached to one end of passes upwardly over a guide pulley 20 and then downwardly around asecond guidepulley 21 sustained The opposite end of the cord is attached to the rear end 01"" the needle carrying slide within the guide tube as at 21 the tendency of the weight being to draw the slide toward the rear, The weight is supported in elevated position, with the slide at the forward part of the means of a trigger or detent 22 pivoted between its ends on a bracket 23 attached to the frame 1, the lower end of the trigger being provided with a linger 22 adapted to enter an eye 247011 the upper end of the weight, and the upper end 01" the trigger being provided with a horizontal arm 25 for the attachment of a controlling or tripping cord 26. This cord passes upwardly over a guide pulley 27 sustained by the frame l and, then laterally to of the calender rolls, where it passes over guide pulleys sustained by said frame and extends to the front of the 'frame within reach of the attendant or stacker. in the operation of severing thesheet after the handle 14: has been'swung inwardly to engage the needle with the same, the attendant by pulling on the cord 26 rocks the trigger on its axis, wh ich action will draw the finger 22 from the eye on the weight and release the latter, and the weight moving down by gravity, will draw the slide and attached cutting needle to the rear and thereby incise the sheet cross-wise. Due to this construction, the cutting device is under the complete control of the stacker or attendant working at the calender rolls, and enables him without the aid of other attendants, to form, the tongue on, the new sheet, enter the same in the calender rolls, and effect the same. A weight the frame 7 cross-wise cut of the sheet. The operation may be performed speedily and with uniformity, and ensures that the new sheet will enter the calender rolls smoothly and evenly and without liability of bunching or clogging the rolls. Furthermore by the operation of the device, the accumulation of the paper to an objectionable extent between the drying cylinders and the calender rolls is avoided, and the wastage of paper consequently reduced to a minimum.

In the foregoing description and accompanying drawings I have set forth my invention in the particular detailed form which'I prefer to adopt, but it will be understood that'these details may be variously changed and modified without departing from the spirit oi the invention; and further it will be understood that the invention is not to be limited to any particular form or construction of the parts except in so far as such limitations are specified in the claims. Obviously it is not essential to the invention that the cutting needle be arranged as shown in full lines and as above described, to acton the sheet where it passes from the last lower drying cylinder to the last upper drying cylinder as good results can be cured if it is applied to act at other points, for instance as shown by dotted lines to the right in Fig. 2.

Having thus described my invention, what I claim is: r c

1. In a paper making machine, the combination of a series oi paper drying cylinders in said travel, to facilitate the entry of the sheet between the calender rolls.

2. In a paper making machine, the combination of a series of paper drying cylinders through which series the paper sheet travels, and a paper cutting member provided with a cutting portion, said member being sustained in position to act on the sheet in its travel through the series of drying cylinders,

and said cutting member being operable to cause its cutting portion to engage and incise the sheet in a directioncrosswise of its travel, to facilitate the entry of the sheet between the calender rolls.

8. In a-paper making machine, the combination of a series of paper drying cylinders through which series the paper sheet travels, and a paper cutting member provided with a cutting portion, said member being sustained in position to act on the sheet in its travel through the series or" drying cylinders, and said cutting member being operable to cause its cutting portion to engage and incise the anda paper cuttin inc-ml: provided with cutting portion, said member being sustained inposition to act on the shoe in its travel throu h the series of being operable to cause its utting portion A to engage and incise he sheetsubstantially throughout its width to iacilitate the entry of the sheet between the calender rolls.

5. In a papermaking machine, the combination of drying cylinders for the travelpaper sheet, and a paper cuttingmember provided with a cutting portion, said memher being sustained in position to act on the traveling sheet and being operableto cause its cutting portion to engage and incise the sheet at or adjacent the point where it passes from one drying ylinder to the next.

6. In a paper making machine, the combination of drying cylinders for the traveling paper sheet, and a paper cutting member provided with a cutting portion, said memher being sustained inposition to act on the traveling sheet, and being operable to incise the sheet in a direction crosswise 01" its travel at or adjacent the point whe c it passes from one drying cylinder to the next.

7. In a paper making machine, the combination of drying cylinders for the traveling paper sheet, and a paper cutting member provides with a cutting portion, said member being sustained in position to on the traveling sheet and being operable to incise the sheet at or adjacent the point where it passesfrom one drying cylinder to the next, both in the direction of its travel and crosswise thereof.

8. In a paper making machine, the combination of a series of drying cylinders through which series the paper sheet travels, and a paper cutting member provided with a cutting portion, said member being sustained in position to act on the sheet in its travel through the drying cylinders; and being movable from an inoperative position free of the sheet toward the same to cause its cutting portion to engage the sheet, and

being movable also transversely of the travel of the sheet to cause its cutting portion to incise the same crosswise.

9. In combination with a paper making machine provided with paper drying cylinders, a paper cutting device applied to the machine at or adjacent the drying cylinders and movable to incise the dried paper sheet,

and power operated means acting on said device to move the same.

10. In combination with a paper making machine provided with paper drying cylinders, a paper cutting device applied to the cylinders a nd machine-at or adjacent the drying cylinders and movable to incise the dried paper sheet, power operated means adapted to act-on the cutting device to move the same, and controllmg means for throwing the power rection of travel of the paper sheet to incise' the same cross-wise, a weight operatively connected with the cutting device to move it, and areleasable member for sustaining the weight elevated.

12..In combination with a paper making machine, a paper cutting device applied thereto and movable transversely of the direction of travel of the paper sheet to lIl'flS3 the same cross-wise, a weight operatively connected with the cutting device to move it, a releasable member for sustaining the weight elevated, and means attached to said member for releasing it.

13. In a paper making machine, and in combination with a frame, a guide member sustained thereby and extending transversely of the direction of travel of the paper sheet, and a cutting device projecting laterally from the guide member and movable longitudinally thereof to act on the paper sheet, means attached to the cutting device for moving it longitudinally, said guide member being rockable on its longitudinal axis to move the cutting device into and out of engagement with the sheet and being provided with a projecting portion independent of said means, for rocking it.

i i. In a paper making machine, and in combination with the frame, a guide member sustained thereby and extending transversely of the direction of travel of the paper sheet, a cutting device projecting laterally from the guide member and movable longitudinally thereof to act on the paper sheet, said guide member being rockable on its longitudinal axis to move the cutting device into and out of engagement with the sheet, a handle attached to the guiding member for rocking it, and means connected with the cutting device and independent of the handle for moving it longitudinally of the guide member.

15. In a paper making machine and in combination with the frame, a guide menr ber sustained thereby and extending trans versely of the travel of the paper sheet, a cutting device sustained by the guide member and movable longitudinally thereof, a cord attached at its opposite ends to the cutting device and passing between its ends around guide pulleys, and an actuating cable connected with the cutting device for moving it longitudinally of the guide member.

16. In a paper making machine, and in combination with the frame, a guide tube sustained by the frame to rock on its longitudinal axis and extending transversely of the travel of the paper sheet, said tube being provided with a longitudinal slot, a slide movable longitudinally within the tube, a cutting device fixed to the slide and projecting outwardly through the slot in the tube to act-on the paper sheet, means at tached to the slide for moving it longitudinally and a handle fixed to the tube for rocking itto move the cutter into and out of engagement with the paper sheet.

17. In a paper making machine and in combination with the frame, a guide tube sustained thereby and extending trans ,versely of the travel of the paper sheet and provided with a longitudinal slot, a'slide movable longitudinally in the tube, a cutting device connected with the slide and projecting outwardly through the slot in the tube, a cord connected at its opposite ends to the opposite ends of the slide within the tube, and extending between its ends outside the tube, a second cord attachedat one end to the slide, and a weight attached to the cord for moving the slide in the tube.

18. In a paper making machine, and in combination with a series of drying cylinders through which series the paper sheet 7 travels toward the calender rolls, a paper cutting device movable transversely of the direction of travel of the sheet and in engagement with the same'to incise the sheet crosswise, power means acting on the cutting device to move the same, and controlling means for the power means extending within reach of the attendant working at the calender rolls.

19. In a paper making machine, and incombination with a series of drying cylin ders through which the paper sheet travels,

a paper cutting member provided with a cutting portion, and sustained in position to act on the paper in its travel through the series of drying cylinders, said member being operable to form an incision near one edge of the sheet in the direct-ion of its travel, and being operable also to form a connecting incision crosswise of the remaining portion of the sheet, to facilitate the entry of the sheet between the calender rolls.

20. In a paper making machine through which the paper sheet travels in its advance to the calender rolls, the combination of a member provided with a paper cutting por tion, said member being sustained in position to act on the dried sheet and being operable to cause its cutting portion to engage the traveling sheet and sever the same through substantially its width whereby the severed end of the sheet may be entered directly between the calender rolls to reestablish its feed.

21. The method of manipulating the traveling paper sheet in a paper making machine to reestablish its feed through the calender rolls, which consists in forming an incision in the traveling sheet at or adjacent the drying cylinders in the direction of its travel to leave a strip, serving the strip from the body portion of the sheet to free one end of the strip and thereby form a tongue, entering the tongue directly between the calender rolls, and serving the sheet through its remaining body portion.

22 The method of manipulating the traveling paper sheet in a paper making machine to reestablish its feed through the calender rolls, which consists in forming an incision in the traveling sheet at or adjacent the drying cylinders in the direction of its travel to leave a marginal strip, severing the strip from the body portion of the sheet to form a tongue, directly entering the tongue between the calender rolls and finally continuing said incision but in a crosswise direction through the remaining body portion of the sheet to completely sever the same. v

In testimony whereof, I have affixed my signature hereto. 1

WILLIAM H. SHELLINGTON.

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