US2870691A - Fourdrinier paper making machine - Google Patents

Description

Jan. 27, 1959 l. R. WISNER ET AL FOURDRINIER PAPER MAKING MACHNE 6 Sheets-Sheet 2 Original Filed March 28, 1952 Jan. 27, 1959 LR. WlSNER ETAL FOURDRINIER PAPER MAKING MACHNE Original Filed March 28, 1952 6 Sheets-Sheet 3 INVENTORS [5L5 I? W/5NER. WEJLEY 5. (ORB/N HENP/K WflL DEN Jan. 27, 1959 l. R. WISNER ET AL 2,870,691

FOURDRINIER PAPER MAKING MACHNE Original Filed March 28, 1952 6 Sheets-Sheet 4 Q 2:5 "imw a [I ll 1,76- 7 J5 INVENTORS Jan. 27, 1959. l. R. WlSNER ETAL 2,870,691

FOURDRINIER PAPER MAKING MACHNE Orig inal Filed March 28, 1952 e Sheets-Sheet 5 5 w a R o L- I Q ED 1% 199 l. R. WISNER ET AL 2,870,691

FOURDBINIER PAPER MAKING MACHNE Original Ff-led March 28, 1952 v 6 Sheets-Sheet 6 21a II an 49 so I 26 202 r) o -2ao v 66- I -65 an A v United States Patent FOURDRINIER PAPER MAKING MACHINE Isle R. Wisner, Wesley S. Corbin, and Henrik Walden, Watertown, N. Y., assignors, by mesne assignments, to The Black-Clawson Company, Hamilton, Ohio, a corporation of Ohio Original application March 28, 1952, Serial No. 279,4)52,

now Patent No. 2,799,209, dated July 16, 1957. Di- .vided and this application May 2, 1955, Serial No.

5 Claims. or. 92-44 This invention relates to Fourdrinier paper making machines. This application is a division of our application Serial No. 279,052, filed March 28, 1952, now Patent No. 2,799,209, issued July 16, 1957.

In recent years, F ourdrinier paper machines have tended to increase materially in size and are currently manufactured with wires in the neighborhood of 300 inches in width, the machine weighing several tons. Heretofore 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 removing a 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 a wire in a much shorter time than has been possible with machines heretofore.

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

In particular, it is an object of the invention to provide a Fourdrinier paper machine wherein the breast roll is movable with respect to the main frame between its operative position and an inoperative position for wire changing, and wherein a special interlock mechanism is provided between the breast roll and the shake mechanism of the machine forpreventing operation of the shake mechanism except when the breast roll is properly in its operative position and vice versa.

It is also an object of the invention to provide a Fourdrinier paper machine wherein the breast roll is pivotally mounted on the shake rails for swinging movement between its operative and inoperative positions and wherein such swinging movement of the breast'roll is possible only when the shake mechanism of the machine is rigidly locked against operation to establish a firm base for the pivotal mounting of the breast roll andits supporting structure.

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

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

In the drawings- Patented Jan. 27, 1959 ice Figure 1 is a side elevational view of the breast roll machine, as shown in the upper left hand portion of Figure 1.

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 1.

Figure'9 is an enlarged vertical sectional view of one of the hydraulic jacks and housing in which the same is mounted.

Figure 10 is an enlarged vertical sectional view of the safety interlock mechanism between the shake rails and side beams of the machine.

Referring particularly to Figures 1 to 4, the machine consists of a pair of front and rear side beams 30 formed of steel plates welded together to form a box structure in cross section, see Figure 9. These side beams extend the entire length of the machine and are supported by a series of cross beams 31 and a cross beam 32 at the couch roll end of the beams 30. The cross beams 31 are positioned below the side beams 30 and are fixedly se-' cured thereto by angle plates 33, 34. The beams 30 are formed at their ends with a portion 35 of greater width in the vertical direction, and the cross beam 32 is aflixed to these enlarged portions 35 and is of' substantially greater width in the vertical direction extending upwardly to the top edge of the side beams 30. A suction couch roll 36 is journalled in bearing structures 37 mounted directly on the cross beam 32.

The cross beams 31, 32, extend laterally from the rear side of the machine, these beams being supported on columns positioned directly below the rear side beam Silas shown in detail in our above application Serial No. 279,052. Each of the cross beams 31 and 32 includes an elongated extension .31, 32' at the back side of the machine, and these extensions are fixedly secured to abutments or supports 41, as by bolts 42. The ends of the beams 31, 32, at the front side of the machine, are supported by removable spacer blocks 46 provided on opposite sides with handles 47, these blocks being positioned on housings 48, or preferably on spacer blocks 49 of relatively small dimension and light weight compared with the blocks 46. The blocks 49 are formed the spacer blocks 46 for the insertion of a new wire 58. When it becomes necessary to replace the wire, fluid pressure is admitted to the lower end of the cylinders 51 through pipes 59, causing the piston rods 53 r is to move upwardly through the slots 50 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 60 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, forthe insertion of the new wire, the machine being at the time supported entirely by the cross beams 31.

The breast roll 62 is journalled at its ends in bearings 63, these bearings being mounted upon arms 64 their peripheral edges to receive a cable 69, one end of which is secured to the flange 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 1 and 8. The sheaves 70 are fixedly secured to shafts 72 journalled in the lower portion of columns 75, the shafts 72 being connected together by a shaft 76, see Figure 8, whereby the sheaves rotate in unison. A smaller sheave 78 is fixedly 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 clevices 8 1. 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.

i The outer end portions of the arms 64 are formed with Thesupporting arms 64 are formed at their outer sides with arcuate flanges 68 grooved on 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 1 and 8. When fluid 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 1, 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 1 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 fixedly secured to the blocks 90. In Figure 5, the vertical spring members 92 have been omitted to illustrate more clearly the eye bolt structure.

1 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 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.

The machine is provided with shake mechanisms designated 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 connected directly to the rear breast roll bearing 63, or to the arm 64 in proximity to the bearing, see

Figure 7, by links 109. The shake mechanism 105 is connected at the joint between the rails 66 and the adjacent rails by links 111. The mechanism106 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 1 and 5.

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 1 and 2. Some of these rolls may be mounted in fixed bearings, as rolls 122, 124, and some of them may be mounted in adjustable bearings to eifect 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 elfect 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 detail in our above application Serial No. 279,052. A take-up roll 132 is provided with mechanism for adjustably positioning the roll to effect 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 may be counterbalanced '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 connected to 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 shown in Figure 6. This movement of the breast roll shortens the operating center distance between the breast roll and the couch roll sufiiciently 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.

In connection with the Fourdrinier shown in Figures 1 and 7, which is provided with shake rails to support the forming boards and table rolls, interlock mechanism is provided to prevent' operation of the shake mechanisms 104, 105, 106, while the breast roll supporting arms 64 and the breast roll 62 carried thereby are disconnected from the supporting columns 75. Referring to Figure 10 the electrical circuit to the motor 107 is controlled through a switch 200 mounted on the front side beam 30. This switch is provided with an actuating member 201 pivotally connected to the lower end of a stem 202 arranged for vertical sliding movement in a bracket 203. The upper end of the stem is fixedly secured to the lower end of a tube 204, on the upper end of which is positioned a collar 205 apertured to slidably receive a stem 206. A helical compression spring 207 encircles the stem 202 and is interposed between the bracket 203 and the lower end of the tube 204, this assembly being enclosed in an outer tube 210, the lower end of which is positioned in an aperture 209 in the bottom wall of the side beam 30, and the upper end is posiitoned in a bushing 211 mounted in the top wall of the side rail, see Figure 10. A helical compression spring 212encircles the upper end of the stem 206, the spring being interposed between the collar 205 and a collar 213 fixedly secured to the stem.

The shake rail 66 is provided with a vertical aperture 214 in which there is slidably mounted a plug 215. This plug is arranged in registration with the tube 210, and the upper portion of the plug is guided by a collar 216 secured to the top surface of the rail 66, as by screws 217. The upper end of the plug is provided with a laterally extending handle 218. As shown in Figures 5-7, this interlock assembly is duplicated on both the front and back sides of the machine.

The control mechanism just described has two operating positions. In its first position with the plug 215 located as shown in Fig. 10, which is the position occupied while the machine is in operation, the switch 200 provides an operating circuit for the motor 107 and interrupts a circuit to the motor operated pump, not shown, which furnishes fluid pressure to the machine including the cylinders 82. When the plug 215 is moved downwardly to shift the control mechanism to its second position, it engages the pin 206, compressing the spring 212 and effecting downward movement of the tube 204' and stem 202 against the action of spring 207, effecting movement of the actuating member 201 about its pivot 220 which effects a shifting of the switch contacts from the above first position of the switch to its second position to open the control circuit to the motor 107, and to energize the circuit to the hydraulic pump mechanism. This downward movement positions the lower end of the plug 215 into the bushing 211. Thus, the shake rail 66 becomes fixedly secured to the side beam 30. Upon downward movement of the plug 215, as explained, fluid under pressure is made available to operate the cylinder structures 82 to permit lowering of the breast roll and, with the breast roll in lowered position, the actuating motor 107 for the shake mechanisms can not be operated. In other words, the interlock mechanism just described functions to prevent accidental operation of the shake mechanisms with the breast roll in-lowered position, as shown in Figure 6.

As shown in Figure 2, a pair of suction boxes 260 are arranged at the end of the shake rails 112, and a series of suction boxes are mounted on the couch roll end of the machine. These suction boxes may be arranged in various groups and are sometimes separated by table rolls 261 ournalled in bearings mounted directly on the side beams 30. The construction and arrangement of these suction boxes 260 are shown in detail in our copending application Serial No. 506,153 filed of even date herewith as a division of our above application Serial No. 279,052. The individual suction boxes are mounted for shaking movement independently of the shake rails as indlcated in Figure 4, the part 288 of each suction box he mg connected by a link 296 with a shaft 293 mounted eccentrically in bearings 292 on a beam 291 and driven by a motor 297.

What we claim is:

1. A Fourdrinier paper making machine comprising a frame including front and rear side beams, a plurality of cross beams fixedly mounted at their rear portions for supporting said side beams, a couch roll mounted on one end of the frame, a pair of shake rails carried by said side beams at the opposite end of the machine, a breast roll supporting structure pivotally mounted on said shake rails, power actuated means for moving said breast roll supporting structure about its pivot for moving the breast roll upwardly and downwardly into and out of operative position, shake mechanism operatively connected to said shake rails, a movable member for initiating operation of said power actuated means, and means responsive to movement of said movable memberfor rendering said shape mechanism inoperable prior to operation of said power actuated means.

2. A Fourdrinier paper making machine comprising a frame having fixed side beams, a pair of shake rails carried by said side beams, a breast roll pivotally supported by said shake rails, power actuated means for moving said breast roll upwardly and downwardly into and out of operative position, shake mechanism connected to said shake rails, interlock means movable to interlock said shake rails fixedly to said side beams, drive means for said shake mechanism, and means responsive to such movement of said interlock means to the interlocking position thereof for disabling said drive means and for rendering said power actuated means operable.

3. A Fourdrinier paper making machine comprising a frame having fixed side beams, a pair of shake rails mounted on said side beams, a breast roll mounted on said shake rails for movement downwardly from normal operating position, power actuated means for moving the breast roll downwardly and upwardly, a plug member carried by said shake rails and movable downwardly into engagement with the side beams to secure the shake rails against movement relative to the side beams, and

, means responsive to such downward movement of said plug to render the shake mechanism inoperable and to render the breast roll moving means operable.

4. A Fourdrinier paper machine comprising a frame including fixed front and back side beams, a pair of front and back shake rails carried by said side beams respectively, a breast roll pivotally supported on said shake rails, power actuated means for moving said breast roll upwardly and downwardly into and out of the operative position thereof, drive means connected to cause shaking movement of said shake rails with respect to said side beams, releasable mechanical means for locking said shake rails in fixed relation with said side beams, control means connected with both said power actuated means and said drive means, means defining a first position of said control'means disabling said power actuated means and providing for operation of said drive means and a second position disabling said drivemeans and providing for operation of said power actuated means, and means for automatically shifting said control means to said second position in response to locking of said mechanical means and for automatically shifting said control means to said first position in response to release of said mechanical means.

5. A Fourdrinier paper machine comprising a frame including fixed front and back side beams, a pair of front and back shake rails carried by said side beams respectively, a breast roll pivotally supported on said shake rails, power actuated means for moving said breast roll upwardly and downwardly into and out of the operative position thereof, drive means connected to cause shaking movement of said shake rails with respect to said side beams, mechanical locking means including a pair of locking members located at the front and back of said machine respectively, means mounting said locking members on said shake rails respectively for movement thereon into and out of locking relation with the adjacent said side beam to interlock said shake rails to said side beams, control means for said power actuated means and said drive means including switch means having a first position effective to disable said power actuated means and to provide for operation of said drive means and having a second position effective to disable said drive means and to provide for operation of said power actuated means, and means responsive to movement of said locking means into and out of the locked position thereof for automatically shifting said switch between said second and first positions respectively.

(References on following page) 7 References Cited in the file of this patent UNITED STATES PATENTS Kutter Mar. 20, 1928 Aldrich et a1. Ian. 29, 1929 5 Kilberry Jam 14, 1930 Broadhurst Mar. 29, 1932 8 Fasoli Apr. 14, 1953 Baxter Aug. 28, 1956 Wisner et a1. July 16, 1957 FOREIGN PATENTS Great Britain Aug. 4, 1931

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