US781886A - Paper-making mechanism. - Google Patents

Description

No. 781,886. PATENTED FEB. 7. 1905. G. G. JENKS.

PAPER MAKING MECHANISM.

APPLIOATION FILED MAB.5,1901.

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FEEL Maw/9 2 Gummy! No. 781,886. PATENTED FEB. '7. 1905.

8 G. O. JBNKS.

PAPER MAKING MECHANISM.

APPLIOATIOH FILED MAB..5,1901.

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Patented February 7, 1905.

PATENT @FFICE.

.CHARLES C. JENKS, OF HOLYOKE, MASSACI-IUSETTS.

PAPER-MAKING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 781,886, dated February 7, 1905.

Application filed March 5, 1901. Serial No. 49,670.

To 10/! It'll (NIL if 'IIMLII/ con/013771,:

Be itknown that I, CHARLES C. JENKS, a citizen of the United States of America, residing at Holyoke, in the county of Hampden and State of hlassaehusetts, have invented new and useful Improvements in Paper-hlaking Mechanism, of which the following is a specification, reference being had to the accompanying drawings and characters of reference marked thereon.

My invention relates to apparatus for prod ucing sheets of paper of variable thickness.

My invention consists of mechanism substantially as hereinafter described for dis placing or compressing a part of the pulpy material while on the Fourdrinier wire, so as to leave such part when the process of manufacture is complete or the paperfinished thinner than the remaining portions. This may be done while the material is sufficiently soft to permit the fibers, &c., to be displaced by the rotary displacer or compressor member employed.

The objects of myinvention are, primarily, to produce sheets of paper of variable thickness, and. secondarily, to produce such paper in a practical and economical manner, with like sections thereof uniform or substantially similar in every particular to each other. Such paper is adapted to be used largely in the manufacture of various kinds of blank books and other purposes where it is desired to attach independent sheets or leaves and obtain a uniform thickness when the parts are so united. Heretofore it has been attempted to produce paper of this kind by skiving or grinding down a portion of the sheet after it has been manufactured of uniform thickness a method which,if practicable, is expensive and unsatisfactory.

in the accompanying drawings, in which like characters of reference indicatelike parts, Figure l is a side view of a part of a Fourdrinier paper-making machine, showing my invention applied thereto, two series of compressor and displacer rolls connected by bands being employed; Fig. 2, a top view of the same; Figs. 3, at, and 5, enlarged, face views of different forms of rolls that may be used to form the thin portion of the sheet; Fig. 6, a longitudinal vertical section through the auxiliarysuetion-box; Figs. 7, 8, and 9, transverse edge views of different forms of paper produced by my mechanism; Fig. 10, a side view illustrating a single compressor and displacer roll or series; and Fig. 11, a side view illustrating a plurality of rolls or series arranged in advance of each other, but without connecting-bands.

In Figs. 1, 2, l0, and 11 a section of a paper-making machine frame (I is shown, with apart of the Fou rd rinier wire 6, a suction-box c, and the left-hand terminals of the decklestraps suitably arranged onsupporting rotary members. The right-hand end of the frame-section, as shown in the drawings, will be designated as the front and the left-hand end as the rear. The Fourdrinier wire moves as indicated by the arrows. Mounted on opposite sides of the frame a are the bifurcated brackets 15 15, each having the bearings 16 16 adjustably fitted in its upper ends. The bearings 16 carry the shafts 1T 17, which extend across and above the Fourdrinier wire between the upper and lower spans of the deckle-straps, and said shafts may be raised or lowered by means of the screws 18, threaded in the brackets 15, with their ends extending upward to receive said bearings, sufficient space being left between the base of each bearing and the adjacent part of the bracket to permit-of the required vertical adjustment of the shafts. Any number of rolls 1%) may be secured on each shaft 17 by means of the setscrews 20 passing through the collars 21, which extend from said rolls, and engaging said shaft, whereby the rolls are secured in position and are rendered laterally adjustable on their respective shafts. The preferred arrangement comprises the employment of two shafts, each having the requisite number of rolls and bands 22 extending from companion rolls on opposite shafts. The pulp is displaced and rendered of less thickness wherever the rolls it) or bands 22 bear against it, and while the ordinary suction-box will in some instances with some stock operate to prevent the pulp again assuming its normal position or condition 4. 1/. of like thickness throughout the whole mass il find it better to provide one or more auxiliary suctionboxes to take the surplus water from the immediate portion of the pulpy web that has been in contact with the displacer or compressor rolls or bands, and for this purpose I provide one or more suction-boxes whose openings are arranged immediately below that portion of the Fourdrinier wire carrying the pulp in line with the displacer or compressor rolls .or bands, and to so arrange the machine that different sized sheets of paper may be manufactured thereon I preferto make this suction-box adjustable and to so locate it that it operates to extract the surplus water from the thin pulpy portion very soon after the pulp has been operated upon by the displacer rolls or bands and before the whole sheet of pulp reaches the first large suction-box usually employed in Fourdrinier machines. The bands 22 may be of rubber, wire web, or any suitable material. A roller 0, similar to the rollers c, which support the Fourdrinier wire, is located a little past the vertical center of the rear shaft 17 to afford a rigid bearing for said wire as it passes, with its load of pulp, from beneath the bands 22, and another supporting-roller e is similarly located with reference to the roll 19. (See Figs. 10 and 11.) The auxiliary suction-box may be variously constructed in order to render it adjustable and so better adapted for use, it being desirable that the vertical openings therein should be of the same width as the compressor or displacer bands or rolls and directly in line therewith. Different boxes having partitions permanently fixed therein to conform with bands or rolls of different widths and with different adjustments of the same can be used, in which case it is necessary to take out the box and replace it with another each time a change in bands or rolls is made; but I prefer to construct a box as shown in Fig. 6, in which the sliding partitions, as 24 24 and 25 25, are moved by the rods 26, threaded to engage said partitions. The outer partitions 24 may have the horizon tal cover-pieces 2% to close over the end portions of the box 23. The partitions 25 have the horizontal floor of false-bottom pieces 25, which rest on the false bottom 27, securely attached to opposite sides of the box 23, said pieces being long enough to permit of the required movement without affording any communication between the space intermediate of said partitions and the space between the bottom of said box and the false bottom. Each rod 26 is provided with right and left hand threads, so that when it is turned the engaging partitions 24 and 25 are actuated toward or away from each other in accordance with the direction given said rod. In this manner the passages 28 28, formed in part by adjacent partitions 24 and 25, are caused to conform in width with the compressor or displacer bands or rolls. The passages 28 communicate with the passage 29 beneath the false bottom 27 which opens throught he central nipple 30, to which a pipe (not shown) from a suction-pump is connected. The outer terminals of the rods 26 pass through holes in the frame a and have the handles 26 on their free ends to facilitate turning the same. Each of said rods is held against lateral movement by two collars 31, attached thereto by the set-screws 32 each side of the frame (1., and, in order to relocate the partitions 24 and 25 to bring the passages 28 in line with a new adjustment laterally of the compressor or displacer bands or rolls, it is simply necessary to loosen the collarson both rods, move the latter toward or away from each other the required distance, and again secure the collars in place. In the event that the compressor or displacer bands or rolls are not used in series it will be readily seen that one of the passages 28 in the box 23 can be closed by actuating the partitions 24 and 25, which assist in forming the passage into contiguity. If the compressor or displacer bands or rolls are used in series of more than two in a series, as they may be, it is necessary to provide a suction-box having either fixed partitions or partitions that can be adjusted in some other way besides that herein shown and described; but this would be no departure from the nature and spirit of my invention, provided the box opened in line with the bands or rolls.

In Fig. 11 three shafts 17 are shown adjustably supported by the brackets 15" and carry the compressor or displacer rolls 19, arranged singly or in series. If the latter, they are arranged as are the rolls 19 in Fig. 2, only there is another series. l/Vhen in series, the rolls on one shaft are in line with those on the other shafts. Any other suitable means for adjusting the shafts 17 vertically and the rolls laterally may be substituted for those shown and described.

The roll 19", Fig. 4, may be substituted for the roll 19, or the roll 19", Fig. 5, which has its face beveled from its edges inward toward the center, as shown in full lines, may be so substituted, or a roll beveled from its edges outward toward the center, as shown in dotted lines in Fig. 5, may be employed. Various other forms may also be used; but it is not deemed necessary for the purposes of this specification to further describe these variations. It is obvious, too, that bands may be fitted to the several irregular forms of rolls, if desired. The bands and rolls may be of any suitable width. The rolls 19, having regular faces, as shown in Fig. 3, will operate to produce paper similar to that illustrated in Fig. 7, with the indentations 33 33. If two of the rolls 19 are placed upon a shaft with their lesser peripheries adjacent to each other, the irregularities produced thereby will be similar to those shown at 33 33 in Fig. 8, and Fig. 9 illustrates the result of the operation of two of the rolls 19 which produce the indentations 33" 33". Rolls having faces conforming to the dotted lines in Fig. 5 would of course produce indentations the reverse of those shown in Fig. 9. The web of paper is cut generally either through the center or at one side of the thin strips extending through the same or may be cut ,in any manner desired, so as to result in the finished product required. The surfaces or faces of the compressor or displacer rolls may be of wood, rubber, wire web, or any other suitable material.

The complete operation may be described as follows, reference being had more particularly to the mechanism illustrated in Figs. 1, 2, and 6, but is equally applicable, with certain obvious and unimportant exceptions, to any of the modifications shown in the other figures: Assuming that the compressor or displacer bands 2 are of the width and form which it is desired to give to the indentations in the paper. it is first necessary to adjust the rolls ll) on the shafts 17 to properly locate the thin strips in said paper; then to adjust the shafts 17 so that the right distance shall be maintained between the under surfaces of the bands 22 and the Fourdrinier wire; next to adjust the partitions in the vacuum-box 23 to bring the passages 28 into line with the bands "22. As the Fourdrinier wire, with its mass of pulp, passes beneath the bands 22 they are thereby actuated, rotating the rolls 19, and each of said bands compresses and displaces a strip in the moving pulp equal in width to itself, leaving said strip thinner than the mass of pulp each side thereof. As the thin strips thus formed pass over the boxopenings 28 the surplus moisture is withdrawn from the same, and the sheet passes on to have the remaining major portions thereof finished in the ordinary manner, leaving it as shown in Fig. T.

For the treatment of some kinds of pulp the bands are the best, while other pulps give better results if a compressor or displacer roll or series or a plurality of rolls or series arranged one back of the other are substituted for the bands.

The auxiliary suction-box 23 is especially necessary when the pulp is slow, slimy, and pervaded with long fibers; but with different pulp the ordinary suction-box is sufficient, as the moisture is thereby withdrawn from the thin strips without reducing the amount in the thicker portions of the sheet enough to interfere with its further successful treatment.

It is sometimes found desirable to run the compressor or displacer roll or bands independent of the moving mass beneath, and this can be done by fixing a pulley 3% on one of the shafts 17, as shown in Fi 9 and driving b -a it with a belt. The parts so driven should travel in the same direction with the Fourdrimer wire and at the same rate of speed. A compressor or displacer roll or series may be driven in the same way. A plurality of compressor or displacer rolls or a plurality of series without bands might require a separate pulley and belt for each shaft or some equiva lent means if all were to be driven independent of the mass on the apron.

As a substitute fora suction-box having adjustable partitions I may employ one or more independent suction-boxes arranged to be moved and located as desired to bring their open 01' inlet faces in the desired position or location and employ flexible suction-conduits extending from each to a main suction or exhaust conduit or employ such flexible suctionconduits between adjacent boxes and connect one of such boxes with the main exhaust or suction conduit.

Having therefore described my invention, what .1 claim, and desire to secure by Letters Patent, is

1. In a machine for producing a continuous channel, substantially uniform in depth and of materially greater width than depth, in the body of a sheet of paper during the manufacture of the latter, the combination with the Fourdrinier wire and decklc-straps; of means for forming said channel, located between the decltle-straps and independent thereof, having a substantially non-vibrating surface of the width of the channel to be formed, said surface being maintained out of contact with the Fourdrinier wire and in continuous forcible contact with the material under treatment, and a suction-opening associated with said surface, substantially as described.

2. In a machine for producing a continuous channel of materially greater width than depth in the body of a sheet of paper during the manufacture of the latter, the combination with the Fourdrinicr wire and dccltle-straps; of means for forming said channel, located between the decide-straps and independent thereof, having a surface of approximately the width of the channel to be formed, said surface being maintained out of contact with the Fourdrinier wire and in continuous forcible contact with the material under treatment, a main suction-box located beneath the Fourdrinier wire, and an auxiliary suction-box associated with said channel-forming means and having a suction-opening located immediately to the rear and in register with said surface.

3. In combination with a Fourdrinier papermaking-machinc wire, a compressor and displacer member or members supported above and out of contact with the same, and independent means to actuate said compressor and displacer member or members concurrently with said wire, said compressor and displacer member or members being of less width than the mass of pulp which said wire is adapted to carry, substantially as set forth.

i. In a machine for producing av continuous channel of materially greater width than depth in the body of a sheet of paper during the able compressor and displacer member or members for making paper of variable thickness, of a suction-box provided with movable partitions capable of adjustment in conformity to the position of said compressor and displacer member or members, said suction-box being open adjacent to the latter only, substantially as set forth.

6. In combination with a Fourdrinier papermaking machine, vertically-adjustable shafts 1 supported above the wire, and laterally-adjustable rolls connected by a channel-forming band, carried by said shafts, said band being of less width than the mass of pulp which the wire is adapted to carry and having its adjacent surface entirelyand permanently out of contact with the Wire, substantially as set forth.

7. In combination with a Fourdrinier papermaking machine, rolls connected by a channelforming band or bands supported above the wire by vertically-adjustable shafts, said band or hands being of less width than the mass of pulp which the wire is adapted to carry and having its or their adjacent surface or surfaces entirely out of contact with the wire, and an auxiliary vacuum or suction box locatedimmediately back of the band or bands and below the wire, substantially as set forth.

8. In combination with a paper-making machine, laterally-adjustable rolls connected by bands of less width than the mass of pulp which said wire is adapted to carry, said rolls being carried above said wire by shafts supported by brackets from the frame, and an auxiliary vacuum-box back of said bands below said wire, having openings in the top thereof conforming in position and width to the bands, substantially as described.

CHARLES C. JENKS WVitnesses:

ALLEN VVEBSTER, DEXTER E. TILLEY.

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