US726909A - Paper-machine. - Google Patents

Description

No. 726,909. l PATENTED `MAY 5, 1903.

J. B. HANSGOM.

PAPER MACHINE.

APPLIGATION FILED man, 190s.

' J." B. HANscoM. PAPER MACHINE. APPLIOATION rILED rms. 12, 1903*.

PATENTBD 4Mm 5190s;

No. 726,909.V

3 SHEETS-BHEBT 2.

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No. 726,909. y PATENTBD'MAY 5, 1290's.v

' J. B. HANSGUM.

" PAPER MACHINE.

. 'APPLICATION FILED FEB. 12, 1903. v N0 MODEL. SSHEETS-SHEET 3.

UNITED STATES rateaea May 5, 190e.

PATENT OFFICE.

JOHN B. IIANSOOM, OF EAST WALPOLE, MASSACHUSETTS, ASSIGNOR TO F. YV. BIRD AND SON, OF EAST VALPOLE, MASSACHUSETTS, A FIRM.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 726,909, dated May 5, 1903.

Application filed February 12,1903. Serial No. 143,021. (No model.)

To @ZZ whom t may concern.-

Be it known that I, JOHN B. HANSCOM, of East Walpole, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Paper-Machines; and I hereby declare that the following is a full, clear, and exact description ofl the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to improvements in machines for making paper designed to be used in the manufacture of rolled paper tubes, and more especially cartridge-tubes.

The object of the invention is to so construct a paper-making machine that a plurality of paper strips having beveled margins or edges and otherwise adapted for this par ticular use may be simultaneouslyV and economically produced, while at the Sametime they are maintained separate from and independent of one another throughout the entire process of their manufacture.V

'lhe machine in which the invention is embodied comprises a series of pulp-forming cylinders arranged' in Vtandem and so constructed that a series of independent and separate pulp layers or films of gradually-increasing widths are formed on the several cylinders-the narrowest on the first cylinder, f

the next wider on the next cylinder, and so on-and a traveling blanket to which the several separate and independent pulp layers on the respective cylinders are progressively applied to form a plurality of separate and independent compound strips each consistingA or built up of superposed layers or iilms of:

grad ually-increasing widths. With these instrumentalities are associated means for trimming the edges of the strips and also means for drying the strips and for winding. It is preferred that each strip shall have its own independent winding means, so that the tension on each may be adjusted independently of the others.

I will first describe the invention in connection with the accompanying drawings, which represent a paper-making machine embodying my improvements in their preferred 5o form, and will then point out more particularly in the claims those features which -Ibelieve torbe4 new and of my own invention'.

In the drawings, Figure l represents a cross-sectional view of one of the independent strips formed by this machine, the several `layers being indicated by lines each separated from the others to more clearlydisclose the difference inwidth of the respective layers, it being understood that in the structure the respectivel layers represented by thesflines are in intimate contact. Fig. 2 represents a plan view of a portion of one of the compound strips, showing the different widths of the layers, it being .understood that the structure may comprise a greater or a less number of strips than that herein shown. Fig. 3=repre sents a side elevation of the improved papermaking machine, parts of the same being shown in vertical section. Fig. 4 represents a plan View of portions of the several gathering-cylinders, showing the pulpgathering portions of increasing width on the successive cylinders, the two cylinders at the 4right of Y signed for use with the additional traveling blanket shown in Fig. 3 when `such'blanket is used in the machine. Fig. represents a diagrammatic planiview of the pulp-gathering cylinders, the trimming devices, and one of the drying-cy1inders,this figure disclosing the independent gathering of the strips of material for the several successive groups of layers and the maintenance of the independence and separation ot' the compound strips throughout the machine, as well as the action ofthe drying-cylinders simultaneously on all the strips. Fig-6 represents a similar view of the drying, calendering, and winding apparatus, showing the simultaneous drying and calendering of the independent strips and the independent winding of the strips, whereby each winding-machine maybe driven or adjusted independently.

As shown in the drawings, 5 and 6 represent pulp-tanks of any usual construction. Rotatably mounted to work through the pulp material held in these tanks are the gathering-rolls 7 and 8, and above these rolls is mounted the traveling apron-9, supported ou ICO will con-tact with the upper peripheral portions of the rolls 7 and S, the forward portion ot' this blanket being guided by the rolls 13 and 14 about the suction-roll 15 and its blanket 16 traveling in the direction of the arrow.

The tanks 17, 18, 19, and A2O are also adapted to contain iiuid pulp, and each of these tanks is provided with its rotatably-mounted gathering- roll 21, 22, 23,01' 24, above which rolls is mounted the traveling blanket 16, working over the suction-roll 15 and over the guide- rolls 25, 26, 27, 2S, and 29 29, which direct the lower reach of this blanket against the upper surface of the rolls 21, 22, 23, and 24. The blanket, traveling in the direction indicated by its associated arrow, passes between the squeeze-rolls v30 and 31, thence over the guiderolls 32 and 33 33, back under the squeeze-roll 3l, and over the guideroll 29.

The squeeze-rolls 30 3l are rotatably mounted in frames, as 34, in which are also rotatably mounted the guide-rolls 35 35, 36 36, and 37 and the squeeze-rolls 38 and 39, over which guide-rolls the blanket 40 passes to and between the squeeze-rolls 38 and 39. At the upper portion of the frames, as 34, are the guide-rolls 41 41, and on extensions of said frames 34 is jourualed the cutter-roll 42, above which and approximately contacting therewith is supported a series of circular cutters 42 42', the member which supports the roll 42 heilig preferably furnished with the guide 43.

The drying mechanism comprises any usual drying means, such as the cylinders 44. 44, rotatably mounted in frames 45 45, any desired number of these cylinders being employed.

Beyond the drying mechanism is located the frame 46" 46, in which are rotatably mounted a series of calender-rolls 47 47 of any well-known construction and operation.

The take-up devices 48 4S are journaled in bearings in the frames 49 49 and are independently driven by their respective belts 50 50, working over the pulleys of said take-up devices; but these takeup devices may be driven in any other usual manner, the main requirement being that they should be independently driven or adjusted, whereby the tension exerted by these devices on the several strips may be varied at will.

I do not limit myself to the exact construction shown in the drawings, nor do I limit myself to the use of the entire' mechanism shown. For instance, it is obvious that the tanks 5 and o', with their rolls 7 and 3, and the blanket 9 may be entirely omitted without departure from the spirit of this invention.

The construction of the several pulpgath ering rolls being related to the progressive ,formation of the several independent structures will be preferably described in relation to their action.

The tanks 17, 1S, 19, and 20, as above stated, are designed to contain paper-pulpin a fluid state. They mayall contain pulp of the same general quality or color, or pulp of different qualities or colors may be contained in the several tanks.

The rolls 21, 22, 23, and 24 have peripheries formed to gather the fluid pulp from their re lated tanks and to deposit said pulp in iilms or layers on the under side of the blanket 16. This formation of the rolls for gathering purposes preferably consists of a peripherallydisposed screen, of wire-cloth orother foraminous material. In order to gather the pulp in comparatively narrow strips, I close or cover portions of these screens with deckles D D, so called, formed of bands of rubber, cloth, or any suitable varnish applied to such screens, the deckles of the several rolls 21 22 23 24 being progressively narrower, so that the gathering portions ofthe rolls correspondingly increase in width, as shown at 21', 22', 23,'and 24 in Fig. 4, the gathering portions of the rolls 7 o'r 3 when these rolls are used being of greater width than those of the roll 24.

rlhe gathering portions of the roll 2l gather 9 a series of comparatively narrow strips 0f pulp ct d and deposit said strips against the under surface of the blanket 16. These strips are then carried by the blanket over the roll 22 and receive the series of wider strips Z; Z), gathered by said roll 22, the edges of the strips l) l) overlapping the edges of the strips d Ct and being applied directly to the surface of the blanket. The movement of the blanket then carries the series of strips successively over the rolls 23 and 24 and takes up the wider strips c c and d d. Thence the compound structures are carried around the suction-roll, 'the surfaces ot' which are furnished with a series of small concavities which tend to draw from the blanket 9 the layer or layers e e applied to said blanket by the rolls 7 and b' when the latter are used, these latter strips being also wider than the strips d d.

It will thus be seen that a plurality of independent and separate compound structures have been formed, each comprising a series of superposed layers of pulp of increasing widths. As these structures rest upon the upper reach of the blanket 16, the narrowest layers ct a are next the blanket and the Widest layers e e are uppermost. Hence the upper line of the blanket is marked e. At this period in the operation of the machine any mechanical or chemical changes occur absolutely independently in the several strips, as the several strips are absolutely separate and independent, while at the same time the several strips are simultaneously subjected to any consolidation of fibers by the draining away of the surplus moisture.

Following the course in which the blanket IIO 16 travels, it will be seen that the several independent strips or structures arenow simultaneously carried between the squeeze-rolls 30 and 3l. The layers being in contact with the smooth periphery of the roll 30, the air being forced out will adhere to this smooth surface, and the lower surfaces of the strips will leave the porous blanket 16, the strips ct c now passing over the guide-rolls 4l 4l between the blanket 40 and the squeeze-roll 38 and thence to and over the cutter-roll 42, where one or both edges of the several strips are trimmedl by the cutters 42', if desired. The several independent strips de are novir simultaneously subjected to the action of the steam heated dryingcylinders 44 44, the widest layers or surfaces of the strips preferably contacting with theperiphery ofthe first cylinder, whereby the thinner edge portions are more accurately applied thereto than if the narrower layers a werebrought into contact with said first cylinder, owing to the bevel on the edges from the layer ct to that marked e. The several independent strips are now carried simultaneously between theV rolls 47 47 of the calender and are wound on the independent take-up devices, thus permitting the independent adjustment of the tension on the respective strips.

It will thus be seen that by the use of the several groups of pulp-forming means arranged in tandem the homogeneous pulp of the several tanks is formed into a succession of groups of independent layers of different widths, that these several groups of layers are by this novel mechanism progressively applied tothe traveling blanket to form a series of compound and absolutely independent structures, that these independentstructures are simultaneously subjected to chemical and mechanical changes necessary for the consolidation of the fibers and the compacting of the layers to change the pulp into paper without the possibility of the reaction of anyparticular strip affecting any other strip or portion thereof, that the strips are independently subjected simultaneously to the trimming devices when desired and are finally independently wound, whereby the degree of tension on the several strips as they pass from the calender-rolls may be adjusted to a nicety.

In a machine thus organized and operating, while the individuality of the separate strips is maintained throughout the whole process of manufacture, yet at the same time very nearly the entire paper-making capacity of the machine is utilized, it being entirely practicable with gathering-cylinders of, say, eighty-six inches in length to produce simultaneously seven independent and disconnected be vel-edged strips each about eleven inches Wide. The bevel-edged strips thuscbtained can be cut up into sheets and rolled into tubes having Walls of equal thickness throughout Without inner or outer projection, and they possess a uniformity of quality and strength not only as respects the compositiommof a single tube, but also as respects the comparative and average composition of a great number of such tubes, which admirably adapts them for use as cartridge-tubes.

The trimming or cutting devices are shown as located to act on the strips before they are dried; but the strips may be passed through the drier before being acted on by the cutters, and I desire to be understood as embracing either arrangement in my claims.

Having described my invention and the manner in which the same is or may be carried into practical effect, what I claim herein as new and of my own invention is- 1. A paper-machine comprising a series of pulp-tanks, pulp-gathering rolls mounted to Work-in said tanks having each a plurality of independent and separated annular pulpgathering sections, registering those on one roll with the corresponding ones on the other rolls, and increasing in Width on the successive rolls-the narrowest sections being on the first roll and so on-and a traveling blanket upon which the series of pulp layers from the several rolls are deposited in superposition, each Wider layer from the rollin advance upon the corresponding narrower layer from the preceding roll, to form a series ofl disconnected and separate bevel-edged strips maintained in their independent relation by the blanket, substantially as hereinbefore set forth.

2. A paper-machine comprising a series of pulp-tanks; pulp-gathering rolls mounted to work in said tanks, having each a plurality of independent and separate sections, registering those on one roll with the corresponding ones on the other rolls and increasing'in width on the successive rolls-thenarrowest sections being on the first roll and so on; a traveling blanket upon which the series of IOS pulp layers from .the several rolls are deposited in superposition, eachwider layer from the roll in advance upon the correspondingnarrower layer from the preceding roll, to form a series of disconnected and separate bevel-edged strips maintained in their independent relation by the blanket; a drier; and means for delivering said strips in independent condition from the blanket to the drier, substantially as hereinbefore s et forth. i

IIO

3. A paper-machine comprising a series of pulp-tanks; pulp-gathering rolls mounted to work in said tanks, having each a plurality of independent and separate annularpulpgathering sections, registering those on one roll with the corresponding ones on the other rolls, and increasing in width on the succes-y sive rolls-the narrowest ections beingon the IZO tirst roll and so on; a tr yeling blanket upon which the series of pulp/ layers from the sevveral rolls are deposited (insuperposition, each Wider layer from the roll in advance upon the corresponding narrower layer from the preceding roll, to form a series of disconnected and separate bevel-edged strips maintained in their independent relation by the blanket; a drier; and means for delivering said strips in independent condition from the blanket to the drier; and an independent Winder for each strip, substantially as hereinbefore set forth.

4. A paper-machine comprising a series of pulp-tanks; pulp-gathering rolls mounted to work in said tanks, having each a plurality of independent and separate pulp-gathering sections, registering those on one roll with the corresponding ones on the other rolls, and increasing in width on the successive rolls-- the narrowest sections being on the first roll and so ou; a traveling blanket upon which the series of pulp layers f rom the several rolls are deposited in superposition, each wider layer from the roll in advance upon the corresponding narrower layer from the preceding roll, to form a series of disconnected and separate bevel-edged strips maintained in their independent relation by the blanket; a drier; and means for delivering said strips in independent condition from the blanket to the drier; and devices for independently trimming and winding the several strips, substantially as hereinbefore set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN B. HANSCOM. Witnesses:

IRVING W. LANE, STEPHEN W. SMITH.

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