US2870692A - Fourdrinier paper making machine - Google Patents

Description

Jan. 27, 1959 l. R. wlsNER Er AL FOURDRINIER PAPER MAKING MACHNE Original Filed March 28, 1952 9 Sheets-Sheet 1 W www, "Mi

Jan. 27, 1959 l. R. wlsNER ET AL 2,870,692

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fforrr 2)/3 Jan. 27, 1959 1. R. wlsNER l-:T/lu. 2,870,692

FOURDRINIER PAPER MAKING MACHNE Original lFiled March 28, 1952 9 Sheets-Sheet 3 INVENTORS ISLE l? WLS/VER. WESEY 5. CURB/N HENR/K WQL DEN Jan. 27, 1959 l. R. wlsNER ET AL 2,870,692

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Jan. 27, 1959 l. R. wlsNER ETAL 2,870,692

FOURDRINIER PAPER MAKING MACHNE original Filed March 28,` 1952 9 sheets-sheet 5 a9 Q Q l O N g Se a Jan. 27, 1959 l. R. wlsNER ErAL FOURDRINIER PAPER MAKING MACHNE original Filed March 28. 1952 9 Sheets-Sheet 6 L 1 vom ,0,

INVENTORS ISLE E- W15/*IEE WESLEY 5. C'OF/N #ENE/K WLDE/Y WM Harny Mfr@ Jan. 27, 1959 l. R. wlsNl-:R ETAL 2,870,692

FOURDRINIER PAPER MAKING MACHNE Original Filed March 28, v1951? 9 Sheets-Sheet 7 INWNI mwNl O j muN- Jan. 27, 1959 l. R. wlsNER Erm. 2,870,592

l FOURDRINIER PAPER MAKING Mmmml original Filed March 2a. 1952 9 sheets-sheet 8 MMMM? Jan. Z7, 1959 l. R. WISNER ET AL FOURDRINIER PAPER MAKING MACHNE 9 Sheets-Sheet 9 INVENTORS Original Filed March 28, 1952 States ,s EQ@ F OURDRINIER PAPER li/IAKING li/IACHINE Isle R. Wisner,.Wesiey S. `Corbin, and Henrik Walden, Watertown, N. Y., assigners, by mesne assignments, to The Black-Clawson Compan Hamiiton, Ohio, a cor poration of Ghio v Original application March 28, 1952, Serial No. 279,@52,

now Patent No. 2,799,209, dated .iuly 16, 1957. Divided and this application May 2, 1955, Serial No. 506,153

This invention relates to Fourdrinier paper making machines. This application vis. a division ofv ourn application Serial No.. 279,052, filedv March 28., i952, now Patent No. 2,799,209, issued lul-y 16,l 1957.

ln recentyears, Fourdrinier paper. machines have tended to increase materially in sizeand are currently manufactured with wires in the neighborhood of 300 inches in Width, the machine weighing several tons.. Heretoiore in changing a wire, it has been necessary to tilt, or cantilever, the entire machine, or to shift the entire machine laterally from its normal operating position in order to remove the old wire and insert a new one. These methods not only require. extensive structural arrangements, but also necessitated disconnecting several parts of the machine, all whereby the time necessarily consumed in removingI a Wire. and inserting a new Wire amounted to several hours. With the larger machines producing a correspondingly larger production,y this extensive down time in changing the. wire hasl become very costly to paper mills.

This invention has as a general' object. a Fourdrinier paper making machine' embodying a construction for very large machines and which, because of novel structural arrangements, permits the changing of av wire in'L a much shorter time than has been possible with machines heretofore'.

The invention has as afurther object a Fourdrinier paper making machine embodying astructural arrangement by which the machine is xedly mounted and which permits the changing of the wire without disturbing the mounting or alinement ofthe machine.

The invention has as a further object' a supporting structure for suction boxes on Fourdrinier machines Theinvention has.4 as at further object a doubie suction i box or roll constructionzwherein the connections to the suction boxes do not. have to bey broken or disturbed during the changing of the wire.v

lt, is also' an object ofthe invention to provide a Four drinierpaperv machine wherein the suction couch roll is equipped with separate suction. connections located at the frontand backends thereof,.and wherein the` con` duits coupled with` thesev suction connectionsy are so supported byl the frame of' thel machine from the' back that they do not require disconnection` during; changing of the wire on the machine.

The invention consists in` the` novel' features and in the: combinations and constructions.hereinafter set` forth and claimed.

ln describing this invention,y reference is had to the accompanying drawings in which' like' characters designate. corresponding; parts in.v all. theviews.

In; the. drawings- Figure-1 isaside elevationahview.- of the breast roll end portionof a` machineA embodying our invention.

Figure12 is a; side.elevational.view of the couch roll portion of the machine,

Figure 3 is top plan view of that portion of the machine shown in Figure l.

Figure 4 is a top plan view of that portion of the machine shown in Figure 2.

Figure 5 is an enlarged side elevational View of the breast roll support and the contiguous portion of the machine, as shown in the upper left hand portion of Figure l.

Figure 6 is a view, similar to Figure 5, showing the breast roll and primary forming table swung downwardly to shorten the machine for the insertion of a new Wire.

Figure 7 is a top plan view of the rear end of the breast roll and primary forming table and the supporting mechanism therefor.

Figure 8 is an` elevational View of the breast roll support moving mechanism, the view being taken on a line corresponding to line 8%8, Figure l.

Figure 9 is a View taken on line 9--9, Figure 2.

Figure lt) `is a4 side' elevational view of one of the suction box supporting structures, the view being indicated by line 14?*ltl, Figure 9.

Figure 1l is a side elevational view of the structure shown in Figure l0.

Figure l2 is asec'tional view takenl on line lil- 12, Figure li).

Figure 13' is an enlarged vertical sectional viewfof one of the hydraulic jacks and housing in which the same is mounted'.

Figure 1,4 is a top plan view of the suction box, rem'oval carriage andy the supporting' track on which the carriage operates.

Figure l5 is a topy plan view of the couch rollA and contiguous end portion of the machine frame illustrating the' couch roll provided with. two suction boxes.

Referring' particularly to Figures l to 9, the machine consists of a pair of 'front andV rear side beams 354i formed of steel plates weidedtogether to' form a box structure in cross section; se'e Figure 9; These side beams extend the entire lengthy of the machine and' are supported by a series of cross beams? siy andf a cross beam 32 at the couch roll end of the beams 36. The cross beams 31" arev positioned` below the' side' beams 30 and are fxedly secured thereto by angle plates 33, 34 to form therewith a unitary frame; The beams 30 are formed at their ends with a portionv 35' of greater width in the vertical direction, and the crossbeam 32 is' affixed to" these enlarged portions 35" and is of substantially greater width in the verticalY direction extending upwardly' t'o the top edge: of the side beams. 30; A suction couch roll' 36 is journalled in bearing structure 37 mounted directly on the cross beam 32'.

The cross beams 3i, '32, extend"laterallyfrom the rear side of the machine, these beams' being supported on columns dil positioned directly below the rear side' beam 3b', seeFigure 9. Each' of' the cross beams 3E anclly i11- cludes an elongatedl extension 3l', 32 at the backside ofthe machine, and these extensions' arek xedly secured to abutments or supports 4l?, as by'bolts 42. The ends of the beams 31', 32, atzthe. front sid'eof the'macliine, are i supported by removable spacer blocks 46' provided on opposite sidesy with' handles 47, these' blocks being positioned on-v housings 48, or preferably onspacer" blocks 49 of relatively small dimension andlight weight compared with the blocks- 46. The blocks 49 are formedy with slots 50;

An elevating jack. is mounted in each of thev housings 48. As shown in Figures`9 and 18, each of' these-jacks consists of a hydraulic' cylinder 51y provided at its upper endl with ahead having a circular flange 52overlyin'gsthe top edgeof the housing 48; The piston rod55 extends upwardly/through an aperture in` ac-ircular plate 54f-positioned on top of the ange 52.

it becomes necessary to replace the wire, uid pressure is admitted to the lowerv end of the cylinders 51 through` pipes 59, causing the piston rods 53 to move upwardly through the slots in the blocks 49 and engage the under side of the blocks 46, the hydraulic cylinder and piston structures applying an upward pressure on the blocks 46 to relieve the downward pressure on the blocks 49 and to permit the same to be conveniently removed. The fluid pressure is then released from the lower end of the cylinders 51 and applied to the upper ends thereof through the pipes to move the piston rods 53 downwardly, whereupon the larger spacer blocks 46 may be removed. This provides a space from the plates 54 to the under side of the beams 31, 32, for the insertion ofthe new wire, the machine being at the time supported in cantilcvered position entirely by the cross beams 31 and 32 with the front side of the machine otherwise unsupported.

l The breast roll 62 is journalled at its ends in bearings 63, these bearings being mounted upon arms 64 which are pivotally mounted, as at 65, to shake rails 66 supported by flat spring members 67 carried by the side beams 30.` T he'supporting arms 64 are formed at their outer sides with arcuate flanges 68 grooved on their peripheral edges to receive a cable 69, one end of which is secured to the ange portion 68, the cables being trained about sheaves 70, and the opposite ends of the cables being secured to` .the sheaves, as at 71, see Figures l and 8. The sheaves 70 are xedly secured to shafts 72 journalled in the lower 'n portion of columns 75, the shafts 72 being connected to-v gether by a shaft 76, see Figure 8, whereby the sheaves rotate in unison. A smaller sheave 78 is xedly secured to the outer ends of the shafts 72 to receive cables 79, the

upper ends of which are secured to piston rods 80 by means of 'clevises 81. The piston rods are movable in cylinders 82 which are supported by yoke members 83 pivoted at 84 to the upper ends of the housings 75. The yokes 83 are provided with adjusting screws 86 for properly positioning the cylinders 82.

The outer end portions of the arms 64 are formed with spaced projections 88 to receive eye bolts 89 depending from blocks 90. These blocks are supported by horizontally extending spring members 91 and vertical spring members 92 extending upwardly from a projection 93 extending laterally from the column 75, see Figures l and 8. When iluid pressure is admitted to the lower ends of the cylinders 82 through pipes 95, the piston rods 80 are moved upwardly, effecting rotation of the sheaves 70,

78, in a counterclockwise direction, Figure l, whereby the cables 69 move the arms 64 about their pivots 65 to swing the breast roll 62 upwardly into operating position, as shown in Figures l and 5, and with the breast roll in this position, the eye bolts can be positioned in the slotted extensions 88 of the arms and by means of the nuts 99, the arms become xedly secured to the blocks 90. In Figure 5, the vertical spring members 92 have been omitted to illustrate more clearly the eye bolt structure. When the nuts 99 are removed from the eye bolts 89, or are loosened, and the eye bolts are swung out of the slotted extensions 88 and fluid pressure is applied to the upper ends of the cylinders 82 through the pipes 100, the mechanism functions to effect lowering of the breast roll to the position shown in Figure 6, as will be apparent.

The breast roll supporting arms 64 are also formed with l connected directly to the 4 rear breast roll bearing 63, or to the arm 64 in proximity to the bearing, see Figure 7, by links 109. The shake mechanism is connected at the joint between the rails 66 and the adjacent rails 110 by links 111. The mechanism 106 is connected at the joint between the rails 110, 112, by linkage 113. It will be observed that the breast roll is carried directly by the shake rail 66 and also the blocks 90, for supporting the outer ends of the support members 64, are mounted on the spring members 91, 92, to permit the free shaking movement of the breast roll and the rails 66 when the breast roll is up in operative position shown in Figures l and 5. Cross reference is made to our copending application Serial No. 506,152 filed of even date herewith as a division of our above application Serial No. 279,052 and particularly disclosing and claiming an` interlock mechanism for preventing shaking movement of the breast roll and the rails 66 when the breast roll is lowered from its operative position.

The forward run of the wire 58 is supported by the primary forming board 103, the forming board 114 carried by shake rails 66 and table rolls 115 carried by shake rails 110, 112, see Figures 1 and 2. The return run of the wire 58 is supported by idler rolls 121, 122, 123, 124, see Figures l and 2. Some of these rolls may be mounted in xed bearings, as rolls 122, 124, and some of them may be mounted in adjustable bearings to effect proper tracking of the wire. The roll 123 is mounted in bearings provided with a manual adjustment 126 while the roll 121 is adjusted by mechanism indicated at 127 which functions automatically to adjust the roll to effect proper tracking of the wire on the machine.

The wire is also contacted by take-up rolls and 125. The rolls 120, 125, are journalled at their ends in bearings carried by arms 130, the upper ends of which are pivotally mounted on the framework of the machine and are provided with mechanisms for raising them upwardly toward the frame of the machine as shown in our above application Serial No. 279,052. A take-up' roll 132 is provided with mechanism for adjustably positioning the roll to eifect proper tension on the wire 58. The bearing housings 133 for the roll 132 carry members 134 formed with an arcuate toothed edge 135 engaging a pinion gear mounted in a housing carried by the side beams and including a worm gear reduction operated by a crank 137. The roll 132 and the supporting arms 130 may be counter balanced by a weight 138 attached to a cable 139 operating over a sheave 140, see Figure 2.

One or more of the take-up rolls may be provided with a spray or shower pipe 141, these showers being connectedto a supply pipe 142 running lengthwise of the machine through rotatable joints 144 to permit the shower pipes 141 to be moved with the arms 130.

When it becomes necessary to change the wire 58, the take-up rolls 120, 125, 132, are moved upwardly and the breast roll 62 swung downwardly into the position v shown in Figure 6. This movement of the breast roll portions 101 positioned inside of the shake rails 66. These portions are formed with surfaces 102 extending parallel to the shake rails 66 and forwardly from the pivots 65, and on which a primary forming board, designated generally at 103, is mounted. Accordingly, this -board moves in unison with the breast roll 62.

l The machine is provided with shake mechanismsdesignated generally at 104, 105, 106, better shown in Figure 3. These mechanisms are operated by a motor 107 and are connected together by shafts 108, the shake 104 being shortens the operating center distance between the breast roll and the couch roll sufficiently to provide ample slack in the wire. Thereupon, the jacks 51 are actuated to permit removal of the smaller spacer blocks 49, the jacks lowered, and the spacer blocks 46 are removed providing ample opening on the front side of the machine for the removal of the wire.

It will be understood that a head box is arranged in juxtaposition to the breast roll 62 and is provided with a discharge opening extending transversely of the wire through which the stock is discharged onto the wire. As

the wire moves forwardly, the water drains through the In the arrangement shown in Figure 2, a pair of sucaero-,aaa

tion boxes 260 are arranged' at the end of the shake rails 112, and a series of suction boxes are mounted on thecouch` roll end of the machine. These Asuction boxes may be arranged in various groups and aresometimes separated by table rolls 261 journalledin bearings mounted directly on the side beams 30. The suction boxes 260 are formed of metal and have a flat top surface engaged by the wire and provided with openings, usually in the form of slits extending lengthwise of the boxes and transversely of the wire. The interior of the boxes isy connected to a suction pump (not shown). A bracket 262. is secured to each end of the suction boxes,y the brackets being formed with spaced apart bosses 263 apertured to receive pins 264. The boxes are supported by a pair of vertically extending links 265. The lower ends of the links 265 are pivotally mounted on cylindrical .end portions 266 of a member 267. The upper ends of the links 265 are apertured to receive the pins 264, the pins being clamped thereto by detachable cap members 268. y

The member 267 is mounted for rocking movement intermediate its ends on a supporting pin 270 which is xedly carried by a plate 271 having depending spaced apart projections 272 formed with elongated apertures 274 to receive clamping screws 275.

The plate 271 is slidably mounted in ways or gibs 277 fixedly secured to the outer surface of the side beams 30, as by screws 278, see Figures 10, ll and 12. The plate 271 is formed with an outwardly extending rib 280, the under side of which has a recessed boss 281 engaged lby the upper end of an Vadjustment screw 282. This screw is threaded for vertical movement into a casting 283 also xedly secured to the side beam 3i), as by screws 284.

The member 280 is also provided with a pair of leveling "screws 286, the upper ends of which engage the under side of the member 267. When the screws 275 are loosened, the plate 271 and the member 267 carried thereby may be adjusted vertically by the screw 282 and inasmuch as the suction box is supported by this structure at both ends, the box can be leveled in a direction transversely of the wire and by manipulation of the screws 286 the box can be moved about the axis of the pin 270 to level the top surface of the box in a direction lengthwise of the wire.

Each of the suction boxes 26@ is formed with a rearwardly extending hollow structure 288 attached to a exible conduit 290 which extends downwardly and is connected to the suction pump. A shaking movement is usually imparted to the suction boxes 260 and, as shown in Figures 4 and 9, a supporting beam 291 is mounted on the cross beam 32 and the next adjacent cross beam 31. A series of bearings 292 are mounted on the beam 291 and a shaft 293 is journalled in the bearings and is provided in registration with each box with an eccentric 294, encircled by an eccentric strap 295 connected to the suction outlet member 288 of each box, by a link 296. Rotation is imparted to the shaft 293 by a motor 297 mounted on the rear end of the cross beam 32.

The .rapid movement of the wire 58 over the top surface of the suction boxes effects considerable wear on these surfaces which require the boxes to be removed and resurfaced periodically. The removal of the boxes is conveniently accomplished by means of a carriage 293 provided at its ends with rollers 299 which ride on a track 300 fixedly mounted on the inner surface of each of the side beams 30, by a series of brackets 301.

Referring to Figures 9 and l4,.the carriage 298 is provided with a plurality of rollers 362. When it is desired to remove a suction box 260, the carriage 298 is moved along the tracks 300 to position the carriage under the suction box, which is to be removed. The shake link 296 is disconnected from the box, as well as the llexible conduit 290. This permits the box to be removed laterally on the supporting links 265, the links acting as a parallelogram movement to lower the box onto the rollers 302. The caps 268 are then loosened and the pins` 264 removed, whereupon the box can be Withdrawn laterally from the front side ofthe machine and during this movement it isl supported on the rollers 302.

The couch roll 36 usually has a perforated shell and there is a suction box located within the roll to remove further moisture fromthe sheet. The rear end of the couch roll is providedwith a housing V320 which is connected to a suction pipe extending, downwardlyv through the oor structure. This. housing 320 has extending rearwardly from it a shaft 13.21. which is connected to a suitable source of power, lsuch as an electric motor, toeifect rotation of the couch; roll. 4

There are occasions when it is desired to have two separate suction boxes mounted in the couch roll, these boxes being connected to separate sources of suction or vacuum of diierent values. When this arrangement is employed, it is necessary to provide a suction outlet, as 322, at the forward end of the couch roll, or at the front side of the machine. Heretofore, these housings 320 have been also connected with a vertically arranged suction pipe and it Was necessary to disconnect and remove this pipe in order to remove and replace the wire 58.

In our machine, we make provision for the second suction box in the couch roll and connect it with a source of vacuum in such a manner as it is not necessary to remove any connections to the couch roll for the removal of the Wire. As previously stated, the cross beams are of hollow box formation and the cross beam 32 is provided with a suction pipe 324 extending therethrough and projecting from the rear end thereof, as illustrated in Figure l5. This suction pipe 324 is connected tothe housing 322 on the forward end of the couch roll as by a anged coupling 325. With this arrangement, the suction pipe 324, exposed on the forward side of the machine, is well within the diameter of the couch roll, see

Figure 2, and accordingly, in no way interferes with the removal and insertion of the wire 58.

From the structure described, it will be apparent that the wire 58 can be removed and replaced quickly `and conveniently. necessary to change the position of the machine frame by cantilevering it on a horizontal axis, moving it in a lengthwise direction, or in a transverse direction. Because the machine is not moved, it is not necessary to disconnect the shake mechanisms, the conduits to the suction boxes and suction couch roll, or other appurtenances.

The spacer blocks and/or jacks serve to relieve the cross beams from unnecessary stresses and strains during the actual operation of the machine. However, the cross beams are entirely sufficient toi support the machinewhen it is not in actual operation.

What we claim is:

l. A Fourdrinier paper making machine comprising a pair of front and rear side beams, a plurality of cross beams located in spaced relation along said machine and connecting said side beams to form a unitary frame, base means connected with said frame at the back thereof and supporting the front thereof in cantilevered position, a suction couch roll, means mounting said couch roll directly on one end of said frame for support thereby with the front end thereof in cantilevered position, means forming separate suction connections at both the rear and front ends of said couch roll, a suction pipe extending transversely of said frame and connected to said suction connection at the front end of said couch roll, and means supporting said suction pipe on said cantilevered portion of said frame to maintain said pipe with the front portion thereof unsupported except by said frame and said couch roll.

2. A Fourdrinier paper making machine comprising apair of front and rear side beams, a plurality of cross beams located in spaced relation along said machine and Cn-nnecting said side beam to form a unitary frame, base In carrying out this operation, it is not v 7 means connected with said frame at the back thereof and supporting the front thereof in cantilevered position, one of said cross beamslbeing formed of hollow boxlike structure and being arranged at one end of said frame, a` suction couch roll, means mounting said couch roll entirely on said hollow cross beam for support thereby with the front end thereof in cantilevered position, means forming separate suction connections at each end of said couch roll, a suction pipe extending transversely of said frame from the back thereof connected to said suction connection at the front end of said couch roll, and said pipe being received within said hollow cross beam for support thereby in cantilevered position with said frame.

References Cited in the iile of this patent UNITED STATES PATENTS Miller et al, Oct. 28, 1890V Davies July 3, 1917 Davies Mar. 26, 1918 Aldrich et al. Jan. 29, 1929 Beadle Dec. 10, 1929 Berry May 28, 1935 Darby May 5, 1936 Malkin July 14, 1936 Malkin Jan. 24, 1939 Baxter Aug. 28, 1956 Wisner et al July 16, 195,7

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