US1369124A - Paper-making - Google Patents

Description

C. E. POPE. PAPER MAKING. APPLICATION FILED MAR. 28. 1919.

Patented Feb. 22, 1921.

2 SHEETS-SBEET I.

c. E. POPE.

PAPER MAKING.

1,369,124. A? LLLLLLLLLLLLLLL AR. 111111 9. Patented Feb. 22, 1921' CHARLES E. POPE, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR T0 GREAT NORTH- ERN PAPER COMPANY, OF MILLINOCKET, MAINE, A CORPORATION OF MAINE.

PAPER-MAKING.

Specification of Letters Patent. Pate t d F E 22 192 Application filed March 28, 1919. Serial No. 285,719.

T 0 all whom it may concern:

Be it known that I, CHARLES E. Porn, a citizen of the United States, and resident of Springfield, county of Hampden, and State of Massachusetts, have invented an Improvement in Paper-Making, of which the following is a specification.

This invention relates to a device for carrying the web of paper from the drying rollers to the calendering rollers of a papermaking machine which is substantially automatic and to forming a lead strip on the last of the drying rollers to be carried over.

It is an improvement on the invention described and claimed in my Patent #992,688, dated May 26, 1911, for carrying the web of paper automatically from the-driers to the calenders.

This work, which can readily be done by hand with slow running machines, is not only difficult but highly dangerous when the web of paper moves rapidly, owing to the danger that the hand of the operative may be drawn onto the calenders.

The object of the present invention is the production of a device for doing this work which has the advantage of being readily applied to existing machines, has no expensive parts and-is easy and safe to operate, even with the web of paper running at eight hundred feet per minute.

Figure l. is a side elevation of the apparatus with parts unnecessary to the understanding of the invention omitted.

Figs. 2 and 3, are like sections, the parts being in different positions which they will occupy at different stages of the operation.

Fig. 4, is a perspective view of a portion of the apparatus.

Fig. 5 is a detail of the knife.

1. represents the last three drying cylinders or rollers of a paper-making machine and 2 the traveling apron therefor.

A lead strip 3. of the paper web. formed in any desired manner. will pass over the driers and be removed from the last of the driers by a scraper +1. thence passing through or to the floor to waste. as in existing machines. until passed to the calendering rollers. as hereinafter provided.

I show in this application. however, a highly convenient method for forming such a lead strip and broadening out the sheet to its full width when desired. Associated with the scraper 1, is an air conductor 5 having an outlet 5*, governed by a valve 5", through which air may be forced toward the calenders.

This air blast will blow the paper web from the scraper 4, toward the calender rollers 6", and'6 in refiexed formation or otherwise.

The lead strip 3, blown upward or away from the scraper 4, bends about a guide roll 7 and passes between two guides 8 and 9, ar ranged one above the other and forming a passage from the driers to the bite between the calender rollers 6, and 6.

The guide roll 7 is preferably an idleroll and is supported in front of the last of the drving rollers but separated therefrom a short distance to provide an unobstructed space between them, and said guide roll 7 is located at about the top of the inlet to the passage formed by the two guides 8 and 9.

The upper guide 8 is preferably a plate somewhat wider than the lead strip, say about eighteen inches wide, and is arranged between the guide roll 7 and the .calender roller 6*. v

Said upper guide plate 8 is supported in any suitable manner as by a bracket 8, attached to the machine-frame.

An air conductor 10, having a nozzle 10* governed by a valve 10", is arranged beneath the guide 8, at or near the front end thereof to direct a current of air alongthe guide 8 toward the bite of the calender'rollers 6 and 6.

The lead strip carried by its momentum and directed by the blast from the conductor 5, is led along being supported by the blast from the conductor 5 and guided by the blast from the conductor 10, and finally passes between the calender rollers as desired.

The lower guide 9 is preferably a slightly curved plate about eighteen inches wide, which is arranged between a point a short distance in front of the scraper and the calendering roller. 6, and said guide plate maintains the air blast from the conductor 5 in its proper course so that it will support the end strip 3 in its progress in the desired direction. Said under guide plate 9 is supported in any suitable manner as by a bracket 9*, attached to the machine-frame.

It will be noted in the structure shown that the space between the end of the guide plate 9 and the scraper is a continuation of the space between the guide-roll 7 and the drying roller, and that such space as a Whole is vertical and unobstructed and open ended and provides for the -free passage therethrough of the paper web when said Web is going to waste.

The lead strip may be formed at the pa permaking wire in the" usual way and carried entirely through the machine before broadening out the sheet, but it is usually found desirable to carry the whole broad sheet through the driers and to waste before attempting to carry the sheet through the calenders. When this is done, it is highly desirable to have a practically automatic device for forming the lead strip, and such an apparatus forms a part of this invention. It may be readily attached to any papermaking machine by anyone skilled in the art and is equally convenient whether my device for carrying the strip to the cal enders is used or not. 30 represents a tubular cylindrical bar or pipe section which is extended transversely from side to side of the machine, and stationarily supported by brackets 31 or other suitable means. It is located close to and in parallel relation with the last of the drying rollers. A knife holder 32 is mounted on said bar and adapted to slide along thereon from end to end ,or thereabouts as may be required, and also to oscillate in any position it may occupy.

Said holder 32 bears a cutting knife 33 of any suitable formation having a circular engaging portion conforming to the contour of one of the drying rollers of the machine, for engagement therewith, whereby it may be properly held, and its cutting point correctly disposed with respect to the web of paper The knife holder 32, when slid along on the bar will correspondingly move the knife from end to end of the drying roller, thereby to sever the web and form the lead strip, the line of severance being diagonal on account of the web advancing while it'is being severed.

Said'knife-holder is also adapted to be moved angularly through a short arc or to be rocked or oscillated on the bar 30, to lift the point of the knife free from the web of paper which it will be understood is the out of use position of the knife.

As a means of sliding the knife-holder along on the bar 30 pneumatic means are here shown adapted for manual. control.

Referring to the drawing iii represents a piston slidably arranged in the tubular bar 30 and said bar is made pressure tight. One end of a cord or chain t is attached to one end of said' piston and said cord or chain extends through the bore of the bar and beyond the end thereof and around a pulley 42, which is suitably journaled at one side of the machine, and thence toward the other side of the machine, in parallel relation with the tubular bar 30 and its other end is attached to the knife-holder.

One end of another cord or chain 43 is attached to the other end of said piston, and said cord or chain extends through the bore of the bar and beyond the endthereof and around a pulley 44, which-is suitably journaled at one side of the machine, and thence toward the other side of the machine, in parallel relation with the tubular bar 30, and its other end is attached to the knife-holder. I Movement of the piston along the bore of the bar acts to correspondingly move the cords or chains, and the knife-holder which is attached thereto.

As here shown the knife-holder compiises a collar 50 slidably arranged on the bar 30,

and a collar 51 rigidly connected therewith which is slidably arranged on a tubular bar ,60, and the cords or chains are attached to both sides of said holder at a point between the two collars.

Said bar 60 serves as a guide for the knife-holder but it also serves as a means for moving the knife-holder angularly or oscillating it with respect to the tubular bar 30 for the purpose of correspondingly moving or tilting the knife to move its cutting point into and out of Web engaging position. Consequently said bar 60, is movable in the arc of a circle about the tubular bar 30 as a center, and for this purpose it is suitably supported so as to provide for such movement, and there is a lever mounted on the tubular bar 30 or elsewhere supported, one end of which engages said bar 60 and the other end is loosely connected with an upright rod 71, which is suitably supported and is provided with notches in its side adapting it forengagement with the end of a. slot 72 in the arm 73 by which it may be held in different elevated positions,

and as a result movement bar up and down will act-to move the lever 70 on the tubular bar 30 as a pivot and will correspondingly move the bar 60 in the arc of a circle about said bar 30 as a center and will correspondingly move the knife-holder and the cutter. A

It will be noted that this operation may be performed in any position the knifehold'er may occupy.

To operate the piston compressed air or pressure in some other form will be admitted at one or the other end of the tubular bar 30, according to the directionwhicli it is desired the piston shall move. For the accomplishment of this result at one side of the machine short pipes 1'5, 76, lead from a of the upright is operated.

suitable control valve 77, respectively to one end of the tubular bar 30 and tubular bar 60, both said bars being pressure tight.' The control valve may be an ordinary three way valve having a hand lever 78 by which it It is connected with a suitable source of pressure,, as compressed air.

' At the other side of the machine. or the other end of the last drying roller the two tubular bars 30 and 60 are connected by a short pipe to provide for the passage of air from one to the other bar to establish communication between them and said connec tion although rigid inherently contains sufficient spring action to enable it to move in order that the knife-holder may be oscillated. By manipulating the hand lever 7 8 of the three way valve a lead strip of any desired length maybe formed at any time desired.

In Fig. 1, the lead strip 3 is shown bending about the guide 7 in the position approximately it assumes just after the air has been turned on through the conductor 5.

In Fig. 2, the end strip is seen about to pass between the calenders 6 and 6.

In Fig. 3, the end strip is seen after it has been carried through the calenders 6 and 6.

The operation of my device is simple.

-When the machine is running satisfactorily I turn on the air blast through the conductor 5 and the lead strip is at once driven by the blast, usually in reflexed formation, across the space and into the passage between the guides to the calenders. its under surface being supported by the air current passing through the conductor 5 and its upper surface being guided by the air current passing along the face of the upper guide plate 8, directly to the bite of the calenders. 7

It may be threaded through the calenders by any suitable means, preferably automatic.

When the lead strip has been passed through the calenders, the web is broadened out by my device or in the usual manner to its full width.

The air blasts are unnecessary after the paper has been carried across and through the calenders. I have found air nozzles of three sixteenths of an inch in diameter and an air pressure of about five pounds satisfactory, but this may be varied within rather wide limits.

It will be found convenient to have a controlling valve 11 governing the passage of air to the nozzle 5* and 10.

The valves 5 and 10' will then act as regulating valves governing the proportion of air flowing through the respective nozzles governed by them.

The arrangement here described constitutes only one form of my invention. The

device maybe readily arranged to conform to the construction of different machines by anyone skilled in the art.

1. In combination with the driers and calenders of a papermaking machine, guide plates arranged one above the other to form a passage for a lead strip of the paper web from the driers t0 the bite of the calenders, and conductors having their outlets arranged to direct currents of air along and between said guide plates in the direction of movement of the lead strip.

2. In combination with the driers and calenders of a papermaking machine, guide plates arranged one above the other to form a passage for a lead strip of the paper web from the driers to the bite of the calenders, and air conductors, one having its outlet arranged to direct currents of air beneath the upper guide plate in the direction of movement of the lead strip and the other arranged to direct its current against the lead strip and to force it into said passage and then by passingalong the upper surface 0 the lower plate to support and guide the lead strip to the bite of the calenders.

' 3. The combination with the drying rollers and calendering rollers of a papermaking machine, and a scraper coiiperating with the last of the drying rollers, of plates arranged to form a guiding passage between said rollers, having an inlet opposite the scraper, and.terminating remotely from the last drying roller to provide an open endet unobstructed vertical space therebetween. means for moving a lead strip of the paper web from the scraper to the bite of the calendering rollers comprising a conductor having outlets at the scraper arranged for directing currents of air across said space and into and along the lower part of the guiding passage, for moving the strip from the scraper across said space and into the guiding passage, and another conductor .havingoutlets at the top of the inlet of the guiding passage for directing currents of air along the upper part of said passage, said under and upper currents of air supporting the strip as it is moved along.

4. The combination with the drying rollers and calendering rollers of a papermaking machine and a scraper cooperating with the last of the drying rollers, of guide plates arranged one above the other between said rollers having end portions diagonally (llS- posed relative to each other to provide a flaring inlet and terminating remotely from the last drying roller to provide an open ended unobstructed vertical space therebetween including the aforesaid scraper, means for directing currents of air across said space and into the guiding passage for blowing a lead strip of the paper web across said space from the scraper into and along said guiding passage and means for directing other currents of air from the top of said inlet into said guiding passage above the aforesaid currents of air, the two air currents beingdirected in the direction of movement of the lead strip and supporting said strip as it is moved through the guiding passage and into the bite of the calendering rollers.

5. The combination with the drying rollers and calendering rollers of a papermal ing machine and a scraper cooperating with the last of the drying rollers, of guide plates arranged one above the other between said rollers, having end portions diagonally disposed relativeto each other to provide a flaring inlet and terminating remotely from the last drying roller to provide a space therebetween, said scraper being located in said space, means for delivering currents of air at said scraper for blowing a lead strip of the paper web across said space and into and along said guiding passage and means for delivering other currents of air into said guiding passage above the aforesaid air currents.

6. The combination with the drying rollers and calendering rollers of a papermaking machine, and'a scraper cooperating with the last of the drying rollers, of guide plates arranged between'said rollers having end portions disposed relative to each other to provide an enlarged inlet terminating remotely from the last drying roller to provide a space therebetween, said scraper being arranged to form the rear wall of said space, means for delivering currents of air at said scraper for blowing a lead strip of the paper web in reflexed formation across said space and into and along said guidingpassage, and means for delivering other currents of air into said guiding passage above the aforesaid air currents.

7. The combination with the drying rollers and calendering rollers of a papermaking machine, and a scraper cooperating with the last of the drying rollers, of plates arranged to form a tapering guiding passage between said rollers having its larger end arranged opposite the scraper to form an inlet and terminating last drying roller to provide an open ended unobstructed vertical space therebetween, a conductor having outlets at the scraper arranged for directing currents of air across said space and into and along the lower part of the guiding passage, for moving a.

lead strip of the paper web in reflexed formation from the scraper across said space and into the guiding passage, and another conductor having outlets at the top of the inlet of theguiding passage for directing currents of air along the upper part of said passage, said under and upper currents of remotely from said air supporting, said strip as it is moved along to the bite of the calendering rollers.

8. The combination with the drying rollers and calendering rollers of ing machine, and a scraper cooperating with the last of the drying rollers, of brackets attached to the machine-frame and guide plates supported by. said brackets arranged to form a guiding passage between said rollers, having an inlet opposite the scraper, and an outlet at the bite of the calendering rollers, and terminating remotely from the last drying roller to provide an open ended unobstructed vertical space therebetween, means for delivering currents of air at said scraper for blowing a lead strip of the paper web across said space into and along said guiding passage, and means for delivering other currents of air into said guiding passage above the aforesaid air currents, said air currents being directed in the direction of movement of said strip and supporting the strip as it is moved along.

9. In combination with the drying rollersand calendering rollers of a papermaking machine, a scraper cooperating with the last of the drying rollers, and an idle roller located in a plane above the scraper over which passes the web of paper leading to the calendering rollers, said idle roller being separated from the last drying roller to leave a space therebetween, of guide plates arranged to form a guiding passage between the last drying roller and the calendering rollers, with its inlet arranged in front of the scraper and idle roller, and terminating at the space therebetween, the idle roller being at one side and the scraper at the other side of said space, and means for delivering currents of air for carrying a lead strip of the paper web in reflexed formation across the space. through the guiding passage and into the bite of the calendering rollers.

10. In combination with the drying rollers and calendering rollers of a papermaking machine, a scraper cooperating with the last of the drying rollers, and an idle roller located in a plane above the, scraper over which passes the web of paper leading to the calendering rollers, said roller being separated from the last drying roller to leave a space therebetween, of upper and under guide plates arranged to form a guiding passage, brackets attached to the machine-frame arranged to support said plates in guiding positions, the upper plate extending from the idle roller to the calender roller, and the under plate extending from the space in front of the scraper below the idle roller to the calendar roller, and means for delivering currents of air for blowing a lead strip of the paper web in reflexed formation, across the space, through the guide a papermak' part of said guiding-means to passage and into the bite of the calender rollers.

11. An attachment adapted to be applied to a Fourdrinier machine for carrying over a lead strip of the paper web from the drying rollers to the calendering rollers, consisting of a guiding-means attached to the machine frame, interposed between the calendering rollers and the drying rollers, with an open ended unobstructed vertical space, at that end in front of the drying rollers, means for removing the lead strip from the last of the drying rollers and for directing currents of air across said space into and along the lower move the lead strip across said space into and along said guiding-means, and other means for directing currents of air across said space into and along the upper part of said guiding-means, said upper and under'currents of air supporting and guiding the strip as it is moved along.

12. and the calender rollers of a papermaking machine, of a cutting device for the paper web consisting of a knife and knife-holder, a tubular bar arranged longitudinally of and parallel with .the last of the drying rollers on-which said knife-holder is mounted to slide and oscillate, a piston fitted-to slide in the bore of said bar and means connecting said piston with the said knife-holder whereby the knife-holder ismoved by the piston, means for supplying pressure to sa d bar to move the piston and means for oscillating the knife-holder in any position it may occupy. Y

13. In combination with the drying rollers and the calender rollers of a papermaking machine, of a cutting device for the paper web consisting of a knife and knife-holder, a tubular bar arranged longitudinally of and parallel with the last of the drying rollers on which said knife-holder is mounted to slide and oscillate, a piston'fitted to slide in the bore of the bar and cords connecting said piston with said knife-holder whereby the knife-holder is moved in opposite directions by the piston, means for supplying pressure to both ends of said bar to move the piston in opposite directions and means for oscillating theknife-holder in any position it may occupy.

14. In combination with the drying rollers and the calender rollers of a papermaking machine, of a cutting device for the paper web consisting of a knife and knife-holder, a tubular bar arranged longitudinally of and parallel with the last of the drying rollers on which said knife-holder is mounted to slide and oscillate, manually controlled means associated with said bar for moving the knife-holder back and forth in the direction of the length thereof and means for operat- In combination with the drying rollersing the knife-holder in any position it may occupy.

15. In combination with the drying rollers and the calender rollers of a papermaking machine, of a cutting device for the paper web consisting of a knife and knife-holder,

'* a tubular bar arranged longitudinally of and parallel with the last of the drying rollers on which said knife-holder is mounted to slide and oscillate, a piston fitted to slide in the bore of said bar and means connecting said piston with the said knife-holder whereby the knife-holder is moved by the piston, means for supplying pressure to said bar to move the piston and another bar arranged in parallel relation with the aforesaid bar Which is engaged by said knife-holder, said bar being movable in the arc of a circle to oscillate the knife-holder.

16. In combination with the drying rollers and the calender rollers of a papermaks ing machine, of a cutting device for the paper web consisting of a knife and knifeholder, a tubular bar arranged longitudinally of and parallel with the last of the drying rollers on which said knife-holder is mounted to slide and oscillate, a piston fitted to slide in the bore of said bar and means connecting said piston with the said knifeholder whereby the knife holder is moved by the piston, means for supplying pressure to said bar to move the piston and another similar bar arranged in parallel relation with the aforesaid bar which is engaged by said knife-holder, said bar being movable in the arc of a circle to oscillate the knifeholder and being in open communication with the aforesaid tubular bar to transmit the pressure thereto and pressure controlled means connected respectively with said bar.

17. In combination with drying rollers and the calender rollers of a papermaking machine, of a. cutting device for the paper web consisting of a knife and knifeholder, a tubular bar arranged longitudinally of and parallel with the last of the drying rollers on which said knife-holder is mounted to slide and oscillate, a piston fitted to slide in the bore of said bar and means connecting said piston with the said knife-holder Whereby the knife-holder is moved by the piston, means for supplying pressure to said bar to move the plston and another similar bar ar-' ranged in parallel relation with the aforesaid bar which is engaged by said knife-holder, said bar being pivotally supported to oscillate the knife-holder and hem in open communication with the aforesai bar to transmit the pressure thereto, connected with a source of pressure and pipes leading bars, a han the oscillation .of the knife-holder may be manually controlled.

therefrom respectively to said; lever for said valve whereby a three way valve I 18. In combination With the drying rollers and the calender rollers of a papermaking machine, of a pair of pressure tight tubular bars arranged alongside of one of the drying rollers, one of which bars is stationary and the other movable, means to move said movable bar, a piston fitted to slide in said stationary bar, manually controlled means to admit pressure at one end of said bar, means establishing open communication between the other ends of said bars, a knife-holder connected with said piston adapted to slide substantially from end to end of one of the drying rollers and to operate in any position it may occupy, and a knife borne by said holder. I

19. The combination with the driers and calenders of a papermaking machine of a knife supported on a framework attached to the machine, a slidable and rotatable support for the same, a journal for said support arranged in parallel relation between the last drier and the calenders of the machine and means to cause said knife to oscillate into and out of contact with the paper passing over, and independent means to cause said knife to reciprocate upon said journal.

20. The combination with the driers and calenders of a papermaking machine of a knife supported on a framework attached to the machine, a slidable and rotatable support for the same, a journal for said support arranged in parallel relation between the last drier and the calenders of the machine and means to cause said knife to oscillate into and out of contact with the paper passing over, and i-ndependent pneumatic means to cause .said knife to reciprocate upon said journal} In testimony whereof, I name to this specification.

' CHARLES E. POPE.

have signed my

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