Method of and means for making decorated paper

Dec. 30, 1930.

J. H. TRASK

1,787,218

METHOD OF AND MEANS FOR MAKING DECORATED PAPER

Filed Oct. 22, 1928

Sheets-Sheet 1

<img file="US1787218A_D0001.tif" />

Dec. 30, 1930.

J. H. TRASK

METHOD OF AND MEANS FOR MAKING

1,787,218

DECORATED PAPER

Filed Oct. 22, 1928 . 4 Sheets-Sheet 2

<img file="US1787218A_D0002.tif" />

Dec. 30, 1930.

J· H. TRASK

METHOD OF AND MEANS FOR MAKING

1,787,218

DECORATED PAPER

Filed Oct. 22, 1928 4 Sheets-Sheet 3

<img file="US1787218A_D0003.tif" />

<img file="US1787218A_D0004.tif" />

Dec. 30, 1930.

J. H. TRASK

METHOD OF AND MEANS FOR MAKING

1,787,218

DECORATED PAPER

Filed Oct. 22, 1928 4 Sheets-Sheet 4

<img file="US1787218A_D0005.tif" />

Patented Dec. 30, 1930

1,787,218

UNITED STATES PATENT OFFICE

JESSE H. TBASK, OF WAUSAU, WISCONSIN _

METHOD OF AND MEANS FOB MAKING DECORATED FAFEB

Application Hied October 22, 1928. Serial No. 314,038.

This invention has for its object to produce may be made in different portions of the decorated paper, more, especially by forming width of the paper simultaneously. _ thereon designs or figures in color and during Referring first to Figures 1 to 4, at 1 is inthe process of manufacture of the paper, al- dicated a Fourdrinier wire of a paper machine g though the same general method may be em- £ * ’ “ ......

ployed for forming figures or designs simu- ating in lating watermarks or which are'not in color ¹' different from the remainder of ihe paper.

This purpose is accomplished^ by leading in superposed relation to the partially dried web of pulp formed on the paper machine, an endless marking member, which if the marking is to be in color, is provided with means for depositing colored paper stock onto the web in the desired designs or configuration, posite ends, the and then withdrawing the¹ marking member horizontally by while preventing the pulp from adhering ” ”” thereto and separating out from the body of the web: Where impressions only are desired ho stock; need be deposited by the marking member which may be provided with impression elements by which the marking is ⁶ effected.

For a more complete understanding of this 25 invention; reference may be had to the accompanying drawings in which

Figure 1 is a side elevation of one form of the mechanism shown as applied to a Fourdrinier machine.

Figure 2 is a top plan of the same. . . -. -Figures 3 and 4 are detail sections on lines ¹ of which is carried, at the end of an arm 21

Figure 5 is a diagrammatic side elevation illustrating a modification.

Figures 6 and 7 are sections on lihes 6—6 and 7—T, respectively, of Figure 1.

Figure 8 is a view similar to Figure 1, but showing an impression marker. '

Figure 9 is a fragmentary section at the head rollend of the mechanism illustrating a modified construction in which a surface coating may be applied to one faceof the paper.

Figure 10 is a fragmentary side elevation _____________________ ___________ showing a device for cleaning the^L belt or _as the adjusting screws shown at 30 adjacent 95 marking member. to the corners of the frame. By suitable ad-

Figure 11 is a section somewhat similar to ' justment of these screws the name may be

Referring first to Figures 1 to 4, at 1 is inpref erably moving when the machine is oper- 55 ating in the direction of the arrow a (Figure 1). ^Mounted above this wire is a frame member 2 which carries the marking mechanism. This frame member is provided at one end with a relatively large roll 3 and at the op- oo posite end with a head roll 4. Intermediate between these rolls and adjacent to the upper portion of the frame 2 is a roll 5. The roll 4 is shown as-journaled in bearings 6 at op>osite ends, these bearings being adjustable 65 ' means of the adjusting bolts 7. The roll 5 is shown as journaled in bearings 10 at opposite ends which are adjustable vertically, the bearings 10 being shown as slidable in slots 11 extending downwardly 70 from the upper edge of the frame 2. The upper ends of these slots may be closed by means of the plates 12. ‘ Passing about the rolls 3, 4 and 5 is a flexible endless marking member or stencil belt 15 having openings 7* therethrough in the desired design or pattern formation.

The roll 3 may be raised or lowered at will and for this purpose it is shown as journaled in bearings 20 at opposite ends, each 89 fixed to a rock shaft 22 which extends across the width of the frame. On one side of the frame this rock shaft has fixed thereto a handle 23 which may be rocked to any desired 85 position through a desired angular range and there held by suitable means such as a releasable dog 24, which may be engaged with any selected portion of a curved rack bar 25 carried on one face of the frame mem- oo her 2. The frame member itself is supported on the frame of the paper machine and may be adjusted toward or from the upper face of the Fourdrinier wire by any suitable means, to the corners of the frame. By suitable adFigure 4, but showing a flow chest divided so positioned as to bring the belt 15 into the transversely of the paper so that marking dif- desired relation with the Fourdrinier wire.

SO ferent in color or other desired characteristic When in operative position on the paper ma- io*

1,787,218 chine, this frame is so positioned that when the handle 23 is swung to the left hand position, as shown in Figure 1, the belt 15 where it passes about the roller 3, rides on the web 5 of pulp lying on the Fourdrinier wire so that as this Fourdrinier wire is moved in normal operation of the paper machine, the belt 15 is caused to move therewith, the rollers 3, 4 and 5 being rotated by frictional engagement 10 therewith. The shaft of the roll 3 may be provided with a hand wheel 26 by which its rotation may be started before it is brought down against the paper web.

When it is desired to stop the motion of the 15 belt 15, ibis may be done by throwing the hand lever 23 to the right, as shown in Figure 1, so as to raise the roller 3 from its lowered position, raising the belt 15 out of contact with the web.

SO Adjustment of the bearing blocks 6 in which the roller 4 is journaled may be caused to control the steering of the belt, so that it may remain in proper position on the rolls during its travel. Vertical adjustment of the 25 bearings 10 insures the proper tension being applied to the belt. As shown the blocks 10 are connected for simultaneous adjustment. For this purpose each of the blocks 10 has threaded therethrough a screw shaft 35 ,30 having a beveled gear 36 at its lower end.

Each bevel gear engages a similar gear as 37 on a horizontal shaft 38, which extends beyond one side of the frame member 2 and carries any suitable device by which this shaft 35 38 may be rotated, as, for example, a hand wheel 39.

After passing around the roller 3 the belt 15 passes beneath a flow chest or box 40, which extends across the frame 2 and has an 40 open lower edge across which the belt 15 passes. As shown best in Figure 4, this stock chest or box 40 extends for substantially the - entire width of the stencil belt and is provided with a supply pipe 41 through which 45 paper stock of the desired color may be fed, and if desired under pressure, into the interior of the box where it may escape through the openings of the stencilbelt onto the upper face of the web of pulp. This mechanism 50 should be placed on a paper machine at such a point that the flow box 40 deposits on the web after it has been fully formed, but before it is completely dry. The particular place where this should be done depends oh various >5 factors, such as the character of the stock, the speed of travel of the Fourdrinier wire, the sharpness with which it is desired to have the designs or figures marked on the paper, and whether or riot it is desired to produce βθ the designs on one side only, or'have them shown on both sides in the finished paper. The sharpness of the outline of the designs is greater where the web of pulp is more nearly dry at the time the coloring material W is applied thereto. Likewise when the pulp is quite dry when the marking furnish is applied, the design is marked on one side • only of the finished, paper. A short fibered pulp is usually preferable as a furnish for the box 40 as it fills in well, though water »_ncolors, white wash, clay, starch, or other suitable materials may be used with or without fiber.

The stencil belt should be of very flexible material, such as rubber or rubber cloth, pref- ₇₅erably somewhat rough on its lower face to make frictional driving contact with the paper web when engaged therewith, and it should approach the Web quite gradually in order that it may not act to displace the _Hformed fibers of t. .e web on initial contact therewith. It is also desirable that its contact be made where it is not flexed to any substantial angle as the edges of the stencil openings should be as flat as possible in order to 85 avoid the presentation of projecting edges or ·points to the formed web which might puncture or otherwise injure it. Likewise the withdrawal of the marking stencil should also be effected gradually and without abrupt >o change of angular relation to minimize any tendency to pick the fiber or dislodge it from the web.

Where the stencil belt is lifted from the wire there is a strong tendency for the web to 95 adhere thereto, it being well known to those skilled in the paper industry that any member contacting with the wet web and having any substantial solid surface presented thereto, tends to retain the web thereon. As the 100 stencil belt has considerable areas presenting solid surfaces, therefore, special means must, be provided for preventing the web from being raised from the Fourdrinier wire, adhering to the steneil belt when the stencil belt is 105 withdrawn from the wire. A very effective means of preventing such adherence, which of course would act to greatly damage if it did not indeed destroy the web, comprises a suction box of any suitable or usual type, such no as is showri at 50. This suction box is posi- ^;tioned beneath the Fourdrinier wire at the flow box and where the stencil, after passing beneath the flow box, is gradually lifted from the upper face of the Fourdrinier wire. This 115 suction box acts to hold the web oh the Fourdrinier wire, freeing it from the stencil belt, which passes away from the Fourdrinier wire and around the head roll 4. The stock box 40 is shown as adjustable vertically.independent- ito ly of the frame 2. Forthispurpose, as shown in Figure 4, it may have end portions 42, which extend through openings 43 in the frame member 2 and through which are threaded adjusting screws 44 journaled in 125 Elate portions 45 arid provided with winged eads 46 above the portions 45 by which they may be turned so as to raise or lowet the member 40. ; ·· .' --4-.4

In some cases it may be found desirable to 130

1.787.218 3 cause the stencil, as it passes about the roll 3, to be presented more gradually to the web than it is possible were it permitted to engage over a substantial arc of the roll 3, thus mini₈ mi zing the chance of the edge portions of the stencil at the openings projecting outwardly and injuring the more or less wet web passing beneath the roll 3. Where this is found desirable the frame 2 may be provided with exten_le sion arms 60 supporting an end roll 61, as shown in Figure 5, over which the stencil 15 passes on its way to the roll 3.. This roll 61 acts to hold a lower stretch 62 of the belt 15 away from contact with the roll 3 over a, sub15 stantial arc so that it is presented flatter to : the web of pulp than where it is permitted to contact over a more substantial arc of the circumference of the roll 3.

If desired the flow box may be divided into 20 a plurality of compartments as by the transverse partitions shown at 80 in Figure 11, each compartment having its own stock supply pipe 81, so that stock* having different colors or having other characteristics may be 25 supplied to the different compartments thus to deposit through the openings of the marking belt over different widthwise portions thereof, thus to obtain corresponding diversity of marking widthwise of the paper.

It may also he found desirable to employ means for cleaning the marking belt. In Figure 10 a stiff water spray 85 is shown for this purpose, pans 86 and 87. with drain pipes 88 and 89, respectively, being shown beneath 35 the upgoing stretch of the belt and beneath the head roll to protect the paper being marked from the water of the spray.

When it is desired to form a mark simulating a watermark, where no marking stock ₄₀ is to be applied to the paper, the construction shown in Figure 8 may be employed. In this construction, it will be noted, that the marking member comprises an endless belt 70, which passes about the rolls 3, 4 and 5, 45 which may be mounted, as previously described, in the frame member 2. This marking member 70, instead of being a stencil belt, is provided with elements 71 on the outer face thereof of the shape of the figures, or 50 designs which it is desired to show on the finished paper. This belt may, if desired, be made of wire screen such as the Fourdrinier wire. When this belt is brought down into operative relation to the web of paper, these 65 elements 71 press thereon and impart the desired marks thereto. Preferably the roll 3 is positioned toward the dry end of the machine, the direction of rotation of the Fourdrinier wire being shown by the arrow δ. 60 The suction box 50 is employed as previously described where the belt 70 is lifted from the Fourdrinier wire so as to hold the web of paper to the Fourdrinier wire and prevent its adhesion to the marking belt.

¢5 In Figure 9 is shown a modified construc tion particularly intended to coat the surface of the paper uniformly, for example with china clay, pulp different from that of the paper, as, for instance, a bleached pulp oh a cheaper paper web of “broke” or the like, coloring material, surface sizing, or other desired materials. To this end the belt as it passes about the head roll 4 contacts with a pick-up cylinder 90 of wire-gauze or other suitable material which is rotatable partly submerged in a vat 91 containing the desired coating material. This cylinder 90 is rotated by frictional contact with the marking belt and as it rotates it picks up coating material from the vat 91 and deposits it on the outside ₈₀face Of the belt, the belt in turn depositing this material on the surface of the paper above the suction box. If desired the cylinder 90 may be drained internally so as to fufiction as a cylinder mold of a cylinder Or wet paper ₈₅machine and from which a web of pulp is removed by the marking belt which acts with relation to this cylinder as a blanket.