US1715615A - Paper-making machine - Google Patents

Description

June 1929- w. H. MILLSPAUGH V 1315.615

PAPER MAKING MACIjINE Original Filed May 27, 1925 3 Sheets-Sheet l June 4, 1929.

w. H. MILLSPAUGH PAPER MAKING MACHINE Original Filed May 27, 1925 3 Sheets-Sheet 72m a as M M June 4, 1929. w. H. MILLSPAUGH PAPER MAKING MACHINE Original Filed May 27,' 1925 5 Sheets-Sheet Patented June 4, 1929.

UNITED STATES PATENT OFFICE.

PAPER-MAKING MACHINE.

Application filed May 27, 1925, Serial No. 33,219. Renewed Novembero30, 1927.

This invention aims to provide an improved wet machine for use in making paper in a-conti nuous sheet, more particularly by a vacuum forming process.

Theinvention will be understood by reference to an illustrative embodiment thereof shown in the annexed drawings, in which:

Fig. 1 is a plan view of one practicable construction embodying the invention.

I Fig. 2 is a side elevation thereof, with the suction roll in crosssection. i

Fig. 3 is a larger sectional elevation taken on the line 3-3 of Fig. 1, looking in the-directionof the arrow.

Fig. 4 is a sectional elevation takenon the line 4-4 of Fig. 3, looking in the direction of the arrow. I y

In the drawings, 5 denotes the rotating perforated cylinder of a suctionroll of any appropriate construction for maintaining vacuum action on a desired cylindric area. The direction of rotation is indicated by the arrow in Figs. 2 and 3. The cylinder bearingsand driving gears for rotating it are not shown, such features being well known in the suction roll art.

An endless strainer medium 6, preferablyof wire cloth such as the ordinary Fourdrinier making wire, is shown entrained upon and driven by the suction roll, providing a paper forming surface on the vacuumaffected area of the roll and also serving to convey the sheet from the roll for delivery to a succeeding section of the-paper machine, for instance to a press section. The delivery end of the wirecloth and means for transferring the *paper sheet therefrom are notshown. 7

J A body of is shown in Fig. 3 bearing on a segment of the cylindrical forming surface provided by the wire covere'd portion of the suction roll, i.-e. by the wire cloth traveling on the roll.

Means for holdingisuch liquid body on the suction roll is represented by the open-ended 'vat 7 It will be understood that the liquid stock is continuously supplied to and main tained at a substantially constant level ,in the vat or receptacle by'appropriate means.

In the cylinder opposite the liquid receptacle there is shown a vacuum'chamber 8 which this instance is provided by a stationary suction box, the open side of which liquid stock for pa'per formation stance is provided as a separate compartment of the same box structure. The suction box packings in contact with the interior surface ofthe cylinder are indicatedat 10. The

chamber 8 communicates by the pipe 9 with suitable apparatus (not shown) for. maintaimng in said chamber a substantially uniform vacuum of appropriate degree to effect vacuum-induced formation of a paper sheet on' the wire cloth traversing the arc of contact with the liquid stock, .while drawing off the large volumes of waterv from-the stock from which the paper forms. The chamber 11 likewise communicates by the pipe 12 with a suitable vacuumpump for maintenance of such vacuum 'as may chamber. 1 v

. As the cylinder revolves the wet paper sheet forms. under vacuum action on the .forming surface as it traverses theme of contact with the liquid stock or while ex posed to the vacuum chamber 8. Said cham her 8 is shown extended a substantial distance above'the level of the liquid in the receptacle be required in said to bring the sheet to a desired low moisture condition. Ordinarily in making a single sheet of. paper a comparatively high vacuum would be maintained in the chamber 11-to force the air in large volumes substantially uniformly throughthe sheet, so as to reduce the sheet to the minimum moisture content' permissible by this method and bring it to condition for eifectively'withstanding a suc- ,ceeding pressing or smoothing operation. According to'various conditions, the amount of moisture-reduction may be varied. For instance, the vacuum in thechamber 11 may be adjusted'to bring the sheets substantially to a predetermined moisture content most advantageous for bonding with another fsheet or other sheets being simultaneously made on I another suction roll orfother rolls in the same machine. I

The vat 7 is shown constructed w1th laterally-adjustable mem ers c p g cal may overlap as shown in Figs. 3 and 4, thereby providing for adjustment of the vat bottom with adjustment of the side walls. The

. overlapping bottom plates 14 are shown having their edges adjacent the cylinder grooved or rabbeted for accommodation of correspondingly overlapping rubber strips '32 .(Fig. 3) which lap the cylinder to aid in preventing leakage of pulp liquid at the bottom of the vat.

The said adjustable vat members may be slidably supported on horizontal beams 15 below the-vat bottom at either side thereof, and

the overlapping bottom plates 14 may rest on an intermediate beam 16 as shown in said figures. Means for adjusting the said adjust- "able members inwardly and outwardly are represented by the screws 17 which in this instance are carried by said members, being non-rota'tably secured in brackets 18 on the outer bottom extensions 13 of said members.

Said screws are threaded through the internally-threaded hubs or nut portions of hand wheels 19, the hubs of which are journalled and retained against endwise movement in bearings carried by the brackets 20. Thus a by operating the hand wheels the screws will move the said adjustable members inwardly or, outwardly tocontrol the position of the side-wall portions 13 according to the width of paper sheet to be made. The outward bottom extensions 13 of said adjustable members are shown secured to subjacent supporting beams 15 by bolts 21 passing through slots in said extensions to permit desired adjustments 7 (Fig. 1'). The outer vertical extensions or plates 13, which fit against coacting face plates provided'by the brackets 23, may be I adjustably secured by appropriate means represented by clamps 22.

The'vertical side plates 13 of the adjustable vat members are'shown having concave edges spaced from the forming surface in the cylinder. To confine the liquid stock laterally on said surface, deckles 24traveling on or with the cylinder cooperate with the said side plates to close the spaces-between them and the forming surface. These deckles are shown as endless thick bands of flexible material appropriate forfthe purpose for instance rubber or the like. around pulleys 25 and 26,"arranged respectively above andbelow the vat, said pulleys The deckles are {shown traveling being so disposed as to entrain the deckles on theforming surface of the cylinder through an ample are to. confine the liquid. "The her sides of the side deckles may be entrained upon the cylinder under suflicient tension to be driven by the cylinder, or they may be independently driven. The return runs of the deckles are shown passing through inclined guide-pass ages 27 constructed in-this instance on the inplates 13 of the adjustable .vat' members. i

The upper (leckle pulleys 25 are shown mounted on a shaft 28 journalled in bracket members 29 secured to the vat walls. The lower deckle pulleys 26 are shown mounted on a shaft 30 the bearings for which arcadjustably secured to brackets 31 for increasing or decreasing the tension" on the deckles.

I Both sets of pulleys may slide freely on their respective shafts to permit lateral adjustment of the deckles with the lateral adjustment of the vat side wall portions'or plates 13. Preferably the dcckle pulleys are splined to the shafts, particularly if driven otherwise than from the cylinder through the contacting deckle bands themselves. r

With the construction described, the paper .made. It will be understood that the width.

of the vacuum chambers in the cylinder should be eoj j'r'espondingly adjusted, which adjustment is accomplished by employing suction boxes equipped with adjustable ends or heads, not herein specifically illustrated as; the same has been illustrated in Patent No.

1,025,822 and in prior copending applications of the present inventor.

It will be understood that the present in- 'vention is not limited to the particular em-,

3, 1923, I claim'the process or processes of wet sheet formatlon herein disclosed, and also broadly claim a machine or apparatusof the .kind herein-disclosed; this application being for subject-matter not specifically disclosed in said prior applications but subordinate to the broader "inventions therein Ser'. Nos. 610,538 and 610,539, filed January claimed. In-my prior application filed May- 11, 1925, $er. N 0. 29,600, I claim a method and machme'in'volving the conditioning of the wet sheet as hereinbefore stated for bond 'ing with another such sheet.

What I claim hereinis:

1. A paper-making machine compriding,

in combination, means providing a'continuously moving. cyhndr c forming surface; means for forming a continuous paper sheet on said surface under action of vacuum exerted upon hqmd stock bearing upon said surface; and means for laterally supporting said liquid stock including'vat walls spaced from said surface and endless deckle bands traveling on said surface and cooperating with said walls to close the spaces between saidwalls and surface.

2. A paper-making machine comprising, in combination, means providing a continuously moving cylindric forming surface; means for forming a continuous paper sheet on'said surface under action of vacuum exerted upon liquid stock bearing upon said surface; and means for laterally supporting,

said liquid stock including vat walls spaced from'said surface and traveling means cooperating with said Walls to close the spaces between said walls and surface.

3. A paper-making machine comprising, in combination, a sheet-forming suction roll; endless deckle bands entrained upon and traveling with the forming surface of the suction roll; and a vat having lateral walls engaged by and cooperating with said deckle bands for holding liquid stock on the forming surface of the suction roll.

4. A paper-making machine comprising, in combinationfi a sheet-forming suction roll and cooperating liquid holding means including laterally adjustable side walls and endless deckle bands coadjustable with said sidewalls, said deckle bands traveling be side said walls on the sheet-forming surface of said suction roll.

5. A paper-making. machine comprisin in combination, asheet-forming suction roll;

' endless deckle bands entrained upon and traveling-with the suction roll; and an open-- ended receptacle for liquid stock having laterally adjustable side wall and overlapping bottom members; said bottom members having overlapping flexible strips bearing ,on the forming surface of the suction roll between said deckle bands; and said deckle bands coadjustable with said side wall members.

6. A paper-making machine comprising,

. in combination, a sheet-forming suction roll;

endless deckle bandsentrained upon and traveling on the sheet forming. surface of the suction-roll; "anda receptacle for liquid stock ha-vin side walls cooperating with said deckle ban s and 'having'a flexible bottom strip bearing on the forming surface between saiddecklebands. I v

7 A paper making machine comprising,

in combination, a suction roll comprising a rotating perforatedcylinder having a sheet-, forming surface and equipped to a ply vac-' uum action on a portion of said sur ace; and means for applying liquid stiack on an area of said surface subjected to vacuum action, including traveling deckles between which the liquid is confined on said area- 8. A paper-making machine comprising,

in combination, an endless traveling strainer 1 medium; a suction roll around which said endless strainer medium is trained; endless deckle bands traveling on the cylindric forming surface provided by theportion of the strainer medium entrained upon the suction ing with said deckle bands for holding liquid stock on the suction roll between'said deckle bands; 'said deckle bands being co-adjustable with said last named means.

10. A paper-making machine comprising,

in combination, means including a suction rollproviding a cylindric sheet-forming surface and cooperating means including traveling deckle bands for holding liquid stock on a segment of said cylinder forming surface above the lower side of the suction roll, said means adjustable to control the width oflithe liquid column bearing on the suction ro 1 11. A paper-making machine comprising,-

in combination, a suction-roll; cooperating liquid-stock holding means including deckle bands on the suction roll; and means associated with th fsuction roll for exerting vacuum action on thesheet formed on said roll after the sheet leaves the sheet-forming area.

12. In a paper-making machine, the com bination with a cylindric forming surface of cooperating liquidstock holding means including laterally-adjustable side walls and bottom members, said bottom members overlapping and having overlapping flexible strips bearing on the forming surface.

13. In a paper-making machine, the combination with a cylindric forming surfaceof llt) cooperating liquid stock holding means m- I eluding laterally adjustable side wall memher?l and deckle bands co-adjustable therewit I r r 14. In a paper-making machine, the com bination'with "a cylindric forming surface of a cooperating receptacle for holding liquid stock on said surface; endless deckle bands traveling on said surface beside the side walls of saidlreceptacle; and deckle pulleys thereforarranged above and below said.

receptacle.

15. In a paper-making machine, the com bination with a cylindric forming surface I of a cooperating receptacle for holding li uid stock-om said surface; endless deckle.

bandstraveling, on said surface beside the side walls of said receptacle; and guide-ways for the return runs of said deckle bands, said guideways being unitary with the side walls I of said receptacle v 'stockonsaid surface; endless deckle bands 7 ravel-ing on said surface beside the side walls of said receptacle; aside wall member (if the receptacle being laterally adjustable; an' the corresponding deckle band being so associated therewith as to move laterally with said side wall member 17. In a machine of the class described,

the combination with a cylindric forming surface, of a laterally adjustable vat; endless ,deckle bands traveling on said surface beside the sidewalls of the vat; deckle pulleys; and shafts therefor; a deckle pulley being slidable on its shaft to permit deckle adjustment with vat adjustment. v 18. In a machine of the class described, th combination with a cylindrie forming surface of a laterally adjustable Vat; deckles coa djustable with the vat and operating means for adjusting the vat and deckles therewith. In testimony whereof I aflix my signature.

WILn n H. MILLSPAUGH;

Images