US1873111A - Apparatus for making paper - Google Patents

Description

Aug. 23, 1932. 1 w. H. CANNARD 1,873,111

APPARATUS FOR MAKING PAPER Filed April 19, 1929 2 Sheets-Sheet l gwuentoz Aug. 23, 1932. w. H. CANNARD 7 APPARATUS FOR MAKING PAPER Filed A ril 19, 1929 2 Sheets-Sheet 2 J3 "TM/$4:

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APPARATUS FOR .311.

Application filed April 19,

This invention relates to apparatus for and method of making paper.

It is an object of the invention to provide a paper making machine with means for de- 6 positing pulp upon a traveling screen 1n the shortest possible time to thereby eliminate as far as possible a tendency of the fibers to assume a more or less arallel relation, and thus produce paper substantially equal 10 strength in all directions.

Another object of the invention is to provide a pulp container for paper making machines which may be mounted above theusual traveling screen and from which pulp is discharged upon the screen in a direction substantially perpendicular to the direction of travel of the machine-the socalled machine direction.

Another object of the invention is to pro- 2 vide a pulp container for paper making machines which is'mounted above a traveling screen and which may be adjusted with respect thereto to assure that the fibers deposited upon the screen will have no opportunity to assume a parallel relation.

Still another object of the invention is to provide a pulp container havin a discharge openin which may be ad uste as to width to regu ate the quantity of pulp discharged therefrom, and which discharge opening is also adjustable as to length to vary the width of the sheet to be formed.

A further object of the invention is to provide a paper making machine having a traveling screen with a pulp container located above the screen and a suction box located below the screen substantially in alinement with the discharge opening in the pulp container, whereby a substantial uantity of water in the pulp israpidly wit drawn so that the fibers will lie upon the screen substantially as deposited by the pulp container.

The invention, in addition to the objects already set forth, also contemplates a novelmethod of makingpaper by depositing pulp upon a traveling screen in a direction substantially erpendicular to the machine direction an under a pressure suficient to overcome the tendency to flow eiiected by movement of the screen, the liquid in the pulp 1929;. seen no. seam.

being substantially all removedjmmediately upon deposltion of the pulp.

Other objects of the invention, and the many advantages thereof, will be more fully brought out as the description proceeds.

In the accompanying drawings, 1 have illustrated a practical embodiment of my in-.

vention; but it is to be understood that the drawings are illustrative merely and are not to be understood as limiting the invention to the details of construction therein disclosed. It will be readily appreciated by those skilled in the art that the invention is susceptible of a wide range ofmodification and equlvalency falling within the scope of the invention as defined in the appended claims.

In these drawings:

Fig. 1 is a side elevation of a machine constructed in accordance with my invention, showing particularly its application to a socalled Fourdrinier machine;

Fig. 2 is a side elevation, on an enlarged scale, ofa pulp' container of K invention and the mechanismassociated therewith;

Fig. 3 is a longitudinal section of the pulp container; i

Fig. t is a transverse section thereof; and

Fig. 5 is a side elevation, more or less diagrammatic, showing the application of the pulp supplying devices of my invention as applied to a cylinder machine. I

Referring to Fig. 1 of the drawings, in which is illustrated the application of the pulp supplying mechanism of my invention to a Fourdrinier machine the referencenumeral 1 indicates the ld ourdrinier wire which travels around the breast roll 2. The reference-numeral 3 indicates the usual deckle straps. This portion of the machine is of the usual Fourdrinier construction, and needs no further explanation here.

The reference-numeral 4 indicates a supporting frame of inverted U shape, which is vertically adjustable in standards 5, it being understood that there are two such frames,

onelo cated at each side of the Fourdrinier wire. Interposed between the frame 4 and the supporting standards 5 are located short reversely-threaded sections 6 provided with adapparent that w on the adjusting nuts 7\ are rotated, the frame 4 will be elevated or lowered, depending upon the direction of rotation of the nuts.

The reference-numeral 8 indicates, gener ally, the pulp container of my inyentwn from. whic pulp is supplied to the Fourdrinier screen 1. This pulp container comprises a cylindrical body portion 9, which is provided with a dischar e opening 10 extending the full lengthnt ereof. Heads or end plates 11 are removably secured to the ends of the body portion 9, as by bolts 12 which are pivoted on lugs 13 on the body portion 9 and which engage slotted in s 14 on the end plates. Each bolt is provi ed with a securing nut 15 by which the body portion and end plates are maintained in assembled relation. Further to assure accurate positioning of the end plates with respect to the body portion, the end plates are provided with suitable dowel pins 15 which engage in apertures 15 in the body portion 9. To provide a leakproof joint between the body portion and the end plates, suitable packing material 16 may be inserted between them.

B referring to Fig. 4, it will be seen that the d portion 9 of the pulp container contacts with one side of the form 4. As has been heretofore stated, it is an object of my invention to provide a pulp container with a discharge opening which is adjustable as to width so that the quantity of pulp discharged therefrom may be regulated. The

discharge opening 10 is adjusted as to width by means of the mechanism illustrated in Fi 4. The cylindrical body portion 9 is de o mable by the application-of pressure upon the side opposite to that at which it contacts with the frame 4. By the application of pressure u on this side, it will be apparent that the ischarge opening 10 may be reduced in width an that, by relieving the ressure upon this side, the width of the disc arge o ning may be increased.

The mec anism for adjusting the width of the discharge opening comprises a short threaded shaft 17 which is threaded into a or projection 18 upon the side of the body portion 9. The shaft 18 is rotated by a worm gear 19 which receives its motion from'a worm 20 which is rotated by a hand wheel 21. The worm gear 19 has a bushing 22 which extends through a bearing formed in the frame 4, as illustrated in Fig. 4, and is at one end threaded for the reception of an alining rin 23 through which passes a set screw 24. y the mechanism thus described, it will be seen that upon rotation of the worm gear 19, the shaft 17 will be caused to apply pressure to one side of the body portion 9 of the ulp container and, since the other side of the container is in fixed contact with the frame 4, it is evident that the shape of the Levant Y ear is rotated in the opposite direction, the 1 I ody ortion 9 assumes its original contour and, t us, the discharge opening 10 is increased in width. By this arrangement,

therefore, it will be clear that the quantity of pulp dischar ed from the container upon the screen may e varied in accordance with the width of the discharge 0 ening 10.

Mechanism is'also provided for regulating or varying the length of the discharge opening 10 so that sheets of different width may be roduced. This mechanism comprises brac ets 25 secured to each of the end plates 11 and which are provided with an elongated bearing 26 for a reversely threaded shaft 27 which is rotatable therein by means of suitable hand wheels 28. -Upon the shaft 27 I have'located at each end of the pulp container a closin means or stopper 29 which, as is seen in igs. 2, 3 and 4, enter the discharge opening 10 and effectually prevent escape of pulp therefrom. As is more clearly shown in Figs. 2 and 4, these stoppers 29 are formed with a triangular portion which extends into the discharge opening 10, and by reason of this construction they will close said opening irrespective of the width of the discharge opening; that is to say, the stoppers 29 close the opening 10 whether it is reduced in width by reason of the compression of the body portion 9 or increased in width when the pressure is relieved.

In order that the stoppers 29 may at all times be properly seated in the discharge opening 10, I have provided springs 30 which exert an upward ressure on the stoppers as well as the threa ed shaft 27, and thus urge the stoppers constantly to their uppermost position. It will be understood that the elongated bearing 26 provides for the slight vertical movement of the shaft 27 occasioned by variations in the width of the openin 10.

Furt er to insure that pulp and liquid will not escape from the container around the stoppers 29, the'end plates 11 are provided with smaller plates 31 which are provided with V-shaped notches therein cooperating with the configuration of the stoppers, 29, suitable packing 32 being interposed between these plates and the stoppers.

Pulp is supplied under pressure to the pulp container through suitable inlet pipes 33 which are connected by supply manifolds 34 to a source of pulp supply (not shown). The pul in the container is agitated by means of beater blades 35 which are mounted upon a-shaft 36 journaled as at 37 in the end discharge plates 11, the shaft 36 being rotated from a the wire 1 and substantially in alinement .with the discharge opening of the pulp con: tainer, its purpose being to withdraw as quickly as possible a substantial portion of the liquid in the pulp. It is not essential that the suction box be so located, but in the position described it will assist materially in causing'the fibers to lie upon the wire in the position in which they are deposited.

The description has so far been directed to my improved pulp container as employed in connection with a Fourdrinier machine of standard construction. It will, of course, be appreciated and understood by those skilled in the art that the invention will also be employed in connection with the so-called cylinder machines, as moreor less diagrammatically illustrated in Fig. 5.

From the foregoing description, my invention and its mode of operation will be entirely clear. It is seen that I have provided a pulp container which supplies fibrous pulp to the traveling screen of a paper'making machine, the container being positioned above the screen and being vertically adjustable with respect thereto. By this arrangement, pulp is discharged from the container upon the screen in a direction substantially perpendicular to the machine direction and under pressure sufficiently great to overcome any tendency to flow occasioned by the movement of the screen with respect to the container. The fibers of the pulp will therefore lie upon the screen in substantially the position in which they are deposited; that is to say, no opportunity is afforded the fibers for assuming a more or less parallel relation. but, on the other hand, the pulp, being agitated within thecontainer, is deposited upon the screen with the fibers in criss-cross relation. Thus, the paper produced will be of substantially equal strength in all directions, which result cannot be attained by the usual flow method whereby the fibers are permitted to assume a more or less parallel relation.

By the'use of the pulp container of my invention, as described herein, the quantity of pulp supplied to the screen may be varied by adjusting the width of the discharge opening 10, and also sheetsof different widths may be produced by varying the length of the discharge opening 10 by manipulation of the stoppers 29.

In the foregoing description, I have also brought out a novel method of making paper, which method includes essentially the step of depositing pulp upon the traveling screen of a paper making machine in a direction substantially perpendicular to the machine direction and under pressure sufiicient to overcome the tendency to flow occasioned by movement of the screen. This method is readily distinguishable from the method heretofore generally in use and by which the pulp is permitted to flow upon the screen from a source of pulp supply located substantially in'horizontal alinement with the screen. By my method, as herein described, a paper of more nearly equal strength in all directions 1s produced. Furthermore, in carrying out my method and in the use of the apparatus herein described, a pulp of greater consistency than'that heretofore used may be employed; that is to say, where by former methods the pulp contains from 95 to 99%% water and 5 to .05% of stock, it is possible by my method to decrease the volume of water to from to and thus increase the stock content of the pulp. The saving afforded will readily be appreciated by those skilled in the art.

I claim: i j

1. In a paper making machine, the comb1- nation with a movable screen of means for pro ecting pulp upon said screen in a direction substantially perpendicular-to the machine direction and under pressure sutficient to overcome any tendency to flow caused by movement of the screen.

2. Paper making apparatus including a movable 50113811,?3. pulp container mounted above said screen, a discharge opening in said container, and means to adjust the width ofto vary the distance between said container and said screen.

4. Paper making apparatus including a movable screen, a pulp container mounted above said screen, a discharge opening in said container, means to adjust the width of said discharge opening to vary the quantity of pulp deposited 'upon said screen, and means to adjust the length of said discharge opening to vary the width of the sheet to be formed.

5. Paper making a paratus including a movable screen, a pu container mounted above saidscreen, a discharge opening in said container, means to adjust the width of said discharge opening to vary the quantity of pulp deposited upon said screen, means to adjust the length of said dischar e opening to vary the width of the sheet to formed, and means to vary the distance between said container and said screen.

6. Paper making apparatus comprising a movable screen, standards juxtaposed to said screen, a pulp container supported b said standards, and means to ad ust the he of said standards whereby to vary the istance between said container and said screen.

7. A pulp container including a deformable body portion, va discharge opening thereiht in, and means to deform said body portion to vary the width of said discharge opening.

8. A ulp container including a deformablybo y portion, a dischar eopening therein, means to deform said ody portion to vary the width of said discharge opening, andmeans to vary the length of said discharge opening, said last-mentioned means operating to close a portion of said discharge opening at any width to which said opening may be adjusted.

9. A pulp container including a body portion having a discharge 0 ening therein,

means to adjust the width 0 said discharge 0 ening, means closing a portion of said disc arge opening, means to adjust said closing means longitudinally of said opening to vary the len thereof,'and means to main tain said closing means in contact with the walls of said discharge opening.

projecting pulp upon said screen in a direction substantially chine direction an under pressure suificient to overcome an tendency to flow caused by movement of t e screen, and a suction box beneath said screen and .in alignment with (perpendicular to the ma said projector for removing moisture from y the pulp, the path of travel of said screen bemg substantially at right angles to the axis of iflld pulp projecting means and said suction In testimony whereof, I aflix my signature..

WILLIAM H. CANNARD.

10. A pulp container including a body portion having a discharge opening therein, end plates for said body portion, brackets mounted on said end lates, a threaded shaft journaled in said rackets, and means on said threaded shaft for closing a portion of said discharge opening.

11. A pulp container including a body portion having a discharge opening therein, end plates for said body portion, brackets mount- 7 ed on said end plates, a threaded shaft journaled in said brackets, means on said threaded shaft for closing a portion of said discharge opening, and means to rotate said threaded shaft whereby said closing means is moved longitudinally of said discharge opening to vary the length thereof.

12. A pulp container including a body portion having a. discharge opening therein, end plates for said body portion, a shaft journaled in said end plates, beater'blades on said shaft, means to supply pulp to said container, and means to rotate said shaft whereby the pulp is agitated by said heater blades.

13. Paper making apparatus including a movable screen, a pulp container located i screen to insure deposition of the pulp fibers in non-parallel relation for any speed of movement of the screen.

15. In a paper making machine, the combination with a movable screen of means for

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