US994863A - Suction-roll. - Google Patents

Description

" W. H. MILLSPMGH.

SUGTION ROLL. ArPLIo'ATIoN FILED ums, 1909.'

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SUCTION ROLL.

APPLICATION FILED Arias. 190s.

Patented June 13, 1911.

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SUCTION ROLL. APPLIOATION FILB) APR. 8, 1909.

Patented June 13, 1911.

UNITED sTATEs PATENT oEEroE.

WILLIAM H. `MIIIILSPAUGH, OF SANDUSKY; OHIO.

SUCTION-ROLL 'speomcatio'i gf Lettr raten. Patented Junel, 1911, Application tiled April 8,

1909. seal No. 488,739. l

To all whom 'in 'may concern: Be it known that I, WILLIAM H. MILLS PAUGH, a-citizen of the United States, residing at Sandusky, in the county of Erie and State of Ohio, have invented certain new and useful Improvements in Suction-Rolls; and I- do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide a revolving suction-roll for use in paper and pulp mills or elsewhere that shall be simple and practical, highly eliicient in operation, and yet cheap to manufacture.

In the use of suction-rollsv with papermaking machines, success depends upon proper control of the pressure of contact etweeri thesuction-box and interior surface Y of the revolving perforated shell or cylinder. As explained in the specificationjof my U. S. Patent No. 895,283, there must be constant air-tight contact between the box and shell, while at the same time the bearing-pressure must be limited td such degree as will prevent the box from becomj vention disclosed in said heads, and b means of springs the ox and 4for maintaining the box and interior surface 0f the cylinder in air-tight contact, or causing one to bear against the other independently of the attractive force of suction, the direction .of relative movement has been radial; asin the case of the machipe exhibited in my above mentioned patent, wherein the box .1s radially adjustable in the c linderinterior sur ace of the cylinder are maintained in contact under yieldable pressure. In that machine, I'have provided for limiting the pressure of'contact by means of adjustin screws, one on each cylinder-head, operating in effect as stops between the' cylinderor the cylinder-bearings and the box in opposition to the force supplied by the springs; and, as the bearingressure is yieldable, it is controlled instant y 'and exactly by the said screws, which serve for making all necessary adjustments. My present invention involves the same general principle of forcrn the box' andA interior surface of the cylin er in contact and limiting the pressure of' such contact, modified however in that the pressure is controlled by relative adjustment in a longitudinal direction. This is eiected by havin the line ofcontact between the box and' cy inder inclined relative to the line of adjustment, and vcausing tlie pressure-applying forceto act in the direction of the ine of adjustment and opposing such force bystop-means operating between the cylinder and the box to limit t 1 ently, either the a justment is axialand the box and interior surface ofthe cylinder are in contact at a slant to the axis of the cylinder, i.. e., the cylinder is interiorl tapered or conoidal and the open face o the box correspondingly inclined to tit thereto; or else the reverse conditions exist, z'. e., the cylinder is interiorly cylindrical, while the direction of adjustment is at a similar slant gitudinal motion of the box being arranged accordingly. The eifect, in either instance is' to give a relative radial adjustment, though there is or need be no actual radial adjustment.

It will be obvious that the alternativear'- rangements above mentioned may-be combined in one construction; that is, the cylinder may be tapered so thatthe line of contact between the box and cylinder will relative lon 'tudinal adjustment may be on a reverse s ant` to the axis; the eicct of which would be to give aA quicker adjustment. While I do not consider this arrangement as practical as the others, it is mentioned as'within' the scope of my invention.

The main advantages in the construction and operation of a suction-rollA on the foregoing principle are simplification in structure, racticality of manufacture, and the fact at thebearingressurebetween the box and cylinder can e controlled andall e bearin '-pressure. Stated dierto the axial, the guides for the relative lonbe on a slant to the axis, while the line of adjustments made a singlel adjusting screiv., at --onefend of' the: cylinder, the said screw being conveniently.located for the operator at the frontof the machine. l do not, however, c'niine myself to .the use 'of a.

or even at the bottom.

The accompanying drawings, which 'are ,Y to be taken 'as a part' of this specification,

illustrate several embodiments of my invention, which may alsobe embodied in other forms whilethe details of construction 'and arrangen'ient of parts maybe variously modi tied. Without restricting myself, .therefore, to anyparticular' construction, the in- 25 the drawings `and then. n iore particularly pointed. out and de n'ed in the'appendedclaims@ jFigurey lfofsaid drawings is a loiifritudi- 3 0 nal vertical -sectio11"of 'a suction-roltembodying niy invention, in'iwhich embodiment the. 'perforated revolving shell orf-cylinder is interiorlygtapered or conical. Fig. '2 is a front 4en'd `elevation thereof.' Fig. 3 is a detail view o f one end of the cylinder and box, i'nlongitudinal vertical section, showing a modification in the pressure -controlling means. Fig. 4 is a longitudinal vertical sec. v' tion, with parts in elevation, of another ftformef suction-roll embodying my inven- 'tion, infwhich -the `shell'or'cylinder `is in- "tcriorly cylindrical-,while the-guides for the box"'are-'o n a, slantjto the vaxisfand'co'nsef "quently' on a slant to the interior sui-face of the cylinder;V Fig. 5.is a loma/ii idinal vertical section of another forinf'iof suction- 'rollembodying 'my invention, in which vthe cylnderisthe* actually adjustable member instead'o'f thefbox asin theprt-,ceding figl 50 ureslfig. `6 is a. longitudinal vertical seci tion )through oneend of the cylinder illustrating a modification of Fig, 5. e

VInthe several figures of the drawings, A denotes tlie re\'olving foraminous shell or cylinder; B the standards or.pillow-blocks; and C-the suctiondmx' arranged longitudi- "fnall'y vwithin-the ey.lindcr,

.I K isa gear for driving theeylinder from -1 a'.1fainio n*and is shown.atlixg-Lnn thecylin. kier -imtwcen twoA -nieinbers of the i-earj standard.. I' I .The standards l the roll and inothers at oneside of the roll,l

vention will be describedwith reference tof. \\'een --thc rail and standaidfit the frontcud I 'box con-forms to the interior curvature of' the cylinder to tit closely thereagainst, and

is provided with suitable packingr which may be hard or yielding. In use, the suction` box is generally provided withlongitudinally adjustable packing-heads for the purpose of extending andv shortening the operative lengt-h oi'- the box in accordance with thewidth of paper being made or treated; but as this feature is independent 'of my .present invention, l have simply shown the box provided with fixed end packing-strips. It is also understood that the box eouununi- Cates by suitable means with a suction-pump -or exhaust apparatus. ln the illustration, I have shown the box provided willi tubular end port-ions D, constructed lower than the 'medial' open -topped :portion of the box which alone bears-against the interior surface ot' the cylinder; and one or botlrot" said -ends 5D is or are adaptedfor coupling to pipe-connections with the said pump or exhaust apparatus.

In Figs. l and-2, the shell or'eylinder A isf interiorly tapered or conical, and the .contacting open face of the box` is correspondingly'inclined to the axis of the cylinder.' This inclination of the open face of the box may be provided in several. nys, as byinclining the box itself, or forming the longitudinal packingstrips with inclined bottoms, or inclining -the grooves whichhold the packing; the specific meansbeing innuay tcrialto the principle of the invention. 'lhe i direction of inclination is preferably inward toward the rear endof the cylinder, that is, the interior diameter of the cylinder diminishes from its t'ront 'tow-ard its rear end. The boxis longitudinally adjustable in or relative to the cylinder, and for this purpose its endportions l) are supported and `:guided by hcails E, which are rigidly z iixed to and may be integral. with the cylinder-bearings.

ln this instance, I have shown the heads aiigularly adjustable toperniitscttingjr thc box atd itl'erent angular positions in the cylinder. For this puiipose, theheads are Iittedv in the-openings in the standards B beyond the bush-linings of the cylinderbearings, so that theheads may-be turned -ctiaxially with the cylinder, and they are adjustably secured to the standards in any suitable manner. lhe heads may be circular, but iu the present case they are shown in the form of cross-bars having arcuate or sector-shaped ends'ttcd in the standards or pillow-blocks, and provided with tlanges overlapping the outer faces of the standards or pill i\\"hlor|cs and adjustably "secured thereto liy boltsor set-screws 'inserted genees ,f8 i

as shown in Fig. 2.. Tapped holes-:may be provided in the face 'of the standard to receive the boltsor set-screws foi:`l a wider range of angularity. Two of suclrgtapped holes are shown in Fig. 2, one at the top land one at-the bottom.'

The particular Vform of guidesbetween the heads and box is of course a matter of mechanical preference. In the illustration, I 10 show the heads'E formed with gibs or guideianges e workingin lateral ways or grooves d in the end portions of the box. The direction of adjustment is or maybe axial; the

guides e cl being parallel with the axis of the cylinder; though, it has already .been suggested, this is not essential to the fundamental principle of the invention, since the direction of adjustment may be inclined to the axis at a reverse slant to the line of contact between the box and shell.

The direction of the interior taper of the `cylinder being as indicated, the box is forced longitudinally rearward the maintain its bearinG-pressure against the interior surface o 'the cylinder, its movement in that direct-ion'being limited to control the presjsurc of contact. For this purpose, an adjusting screw or bolt4 J is inserted loosely if thi-bu h the front heador member E, and is '3U-tapped or'threaded` into a lug F on the bot- `in of the suction-box. A coiled exparn sion spring H placed on the screw between i the head E and lug F, yieldingly forces the boxrearward until the head of thescrew or '35 bolt engages the member E, thus limiting the relative movement. In other words, the Spring forces the box and interior surface of the cylinder in yieldable contact, and the screw limits the pressure. of such contact. By

l 40 adjusting the screw,f the pressure of contact can be controlled to the exact degree desired; the spring being contracted as the screw is adjusted inward, or turned in a direct-ion to draw the box forward, and being allowed to distend as the screw is adjusted in the opposite direction. By means of a common wrench, all adjustments necessary may thus be made' with the single screw J. at the frontv of the suction-roll.

" It will be evident that the spring or ether I against the box in opposition to the force of said spring. Sh uld this arrangement be adopted, it woul be preferable to reverse the taper of the cylinder, that is, have its interior diameter decreased toward its front end, and place the spring at the rear end vadjusting devices would operate with preand the adjusting screw at the 4front for the better convenience ofthe o erator.

As the direction of relative adjustment is longitudinal, it will also be evident-that the bearing-pressure between the box. and interior surface of the cylinder may becontrolled by a single adjusting screw,` as well where the Awhole adjustment is positive as where yielding bearing-pressure is maintained. Fig. 3 shows a. 4construction having 75 positive adjustment. Said construction is similar to that shown in Fig.'1, except that the spring is omitted, and the screw J is susceptible of a rotary motion only, being prevented from sliding or moving end wise 8`0 lby the bolt-head j and a collar j on the screw abutting against opposite sides of the head E through which the screw is inserted. Hence the adjustment of the screw determines the bearing- Jress'ure oft-he box' 85 against the interior sur a'ce of the cylinder. a

In Fig. 4, I have shown an embodiment of my invention wherein thel interior surface of the shell A is cylindrical, and the line of adjustment of the box is ata, slant 90 to the axis of the cylindeigwhichfis ac,- complished by inclining the guides e (Z between the heads E-and end-portions of the box, in accordance with the slant of the line of adjustment; theadjusting screw J being similarly inclined. The guides'may be either in alinement, or they may beparallel but not in-alinement, as shown. EX- cept as above described, the construction shown 'in Fig. 4 is substantially similar to 100 that shown in Fig. l, and no further de-l scription will be necessary;

In Figs. l to 4 inclusive,the cylinderbearings are supposed to be fixed and the box free for endwise adjustment. But itis i? obvious that the arrangement may be reversed, that is the box C may be'the actu` ally stationary member, and the shell or. cylinder 'A the adj ustable member. For ex` ample, without any modification in .any of the foregoing structures, the box C may be so coupled with rigid pipe-connections as to maintain the box. in fixed position, while the standards B may be allowed .to slide or shift. in a longitudinal direction ;ffor the cylinder bearings may be shiftable in the standards; in which event the guides and f3isely the same efect as hereinbefore set ort I haye'illustrated in Figs. 5 and other f embodiments of my invention, involving the reverse mode of -adjustmenti-n a construction where the box is ixed relative to the cylinder-bearings, and the cylinder is '12., shiftable longitudinally in its bearings. In

.these embodiments, the shell is interiorly tapered and the box axially adjustable and inclined to fit the int'rior tlper of the shell, i as in the case of Figs. 1 to 3,'but th'e em` 15,

bodiinents about to ,be described are'lie'qnally #adapted forutbe use of an interiorly lcylindrical shell and slanting adjnstmentyas-de-Wv scribed )Vith referenceto Fig. 4.'

In Fig'. 5the ends of the. boxare fasi A tened to and supported by brackets B1 and Bz carried bythe front and rear standards- B. ThecylindenA Vis slidable'in its bear`v ings, and two thrust-heads or collars E1,

also slidablein said bearings, are arranged to abut againsttlie opposite endsrof the! cylinder. The beads are rigidly connected tndinallyrelative to the box.

by la central rod G, an extension J1 of which projects forward through airopen` ing inv the front bracket B1. iIt? is obvious that by means of the connected thrustand the movement is limited by the nutfy" screwed on the end of the rod J1, `and abut. ting against -tlie bracket Bl. TheheadsE; niayride on the end portions ofthe box and? be guided thereby to obviate any' tendency of the beads to turn Witlilthencylindei-jl The" 1:

gea rvK may be engaged by along pinion VK1 to accommodate the longitudinal adjust-g The construction ShoWninFig.` 6.1s the saine as in Figjf, except in-tlie following particulars: The f1 ends 'of thev cylinder? pro-` ject beyond lits bearingsjand'als'oliave bearings on the thrust-headsEF,v which latterv are slidably Supportedfandfgnided by the* end portions of theY 'box,- and -are conneeted by a plurality of tierods G,on`e 'of vwhich provides the extension' Jbfor a springll and limiting-nut `j,.as^sliown.

It will be noted' that'tliel taper of the shell in Figs. 5 and 6V is Ain the opposite di-V rection to the taper as .shown in IFigs; 1.. t o 'I f. same end, while' th shell is the movabl member. The 'effect-jeff moving the ,shy in the manner shown infFig. 5 is the saine as moving the -boxfin' the .opposite dire c' While the'bracltetisIl?1 and B2 ,in

f' 'and Gare' shov n as permanent` l attachments i der-bearings,;it is obvious that said brackets.

the box at different angular positions in the cylinder.

Tn this specification, the terms, lineof .cylindrical or conical surface where tlie cyliuderaind open faceefllie suction-box areln contact; and the' line of adjustment maybe taken asjthe mean line ofactual movement, or any line indicatingthe dibox orface ofthe boxfand cylinder. The 'term lcy linderis intended to include any V-oi'thegti-'ue cylinder.

' Insome cases it'may be desirable t 'withwiththe' interior surface of tli ylinder lecting between the box packing and the cylinder to'seal or partially sealtlie tacnnm chamber; in any event actual rictional contact may' not be necessary it'the suction box packing and interior surface of the 'cylinder are in near contact' snicicnt-to preserve a good working vacunni or suction,

as required. These conditions will be understood as meaning contact Within the sense of-tlie present invention.

AI claim as myinvcntion and desire to se; cin-e by Letters Patent: i

i 1'.Y Asnction-roll having provision for relative longitudinal adjustment between the fsnctionlbox ai'idcyliiider, anda'neans whereby aV relative radial adj u stnient, results.

Y2. ..'\fsnction-roll wherein the degree of vcontactbetween tliesuction-box and interior sinfaceoftlic cylinder is controlled by relative longitudinal adjustment between said menibcrs'on a line slantinbr to or non-parallel with'. the line of contact.

r `3. A As uction-roll having an interiorlytapered cylinder and a suction-box therein with' its open face correspondingly inclined adapted to Contact with the interior surfaceof the vcylinder, therev being provision for; ielative longitudinal adjustment for regulating the pres'snrevoil contact.

t 4. A. suction-roll having provision for relative longitudinal adjustment between the suction-box and cylinder in a direction slant fing' to the interior surface 'of the cylinder with 'which the suction-box contacts.

5.' A suction-roll liavingprovision for relativo longitndin'al 'adjustment between the Vsuction-box a d cylinder and having guides for the box a a slant tothe interior surface of the, cylinder.

6. A Suctionroll wherein the'suction-box and interior surface of; tlie cylinder are maintained in contact iith yielding pressure. andlongitudinal adjusting means liiniting'the pressure. Y i.

7. suction-roll having; longitudinal adjusting means forcing;r the suction-box and interior` surface of the cylinder-in contact 'at a limited prcssui'e'.-

S. T n a suction-roll, thel combination with means forcingl the' box and interior surface of the cylinder in contact, of a-'singleadjnsting,- instrumentality limiting thepressurc of such contact. 1

t). In a suction-roll, the combination of form of 'shell which-may be used in place` -and'depend upon the water or moisture col-y rect-ipnof relative movement. between theV 'hold the suction Vbox from actual contact 11.- A suction-roll having provision for' ing pressure..

man"

the cylinder and suction-box in' contact with its interior surface, one bearing' a ainst the other .with yielding pressure, an adjusting instrumentality limiting the bear- 10. A. suction-roll having provision for maintaining Contact between the suction-box and interior surface'of thecylinder by longitudinal adjustment'of one of sa-id members, and means regulating such adjustment to limit the pressure of contact.'

` maintaining contact between the suction-box.

' justment comprising a single adjusting inL and interior surface of the cylinder at a .limited de ree of pressure by relative longitudinala ju'stment between the box and cylinder on aline inclined to the line of contact.

12. A suction-roll wherein relative longitudinal movement is allowed between the suction-box and cylinder on a line slanting tothe line of contact between the box and' interior surface of the cylinder, and having stop-means limiting such movement in a direction to increase the pressure bf contact, to revent lookin of the box to the cylinder un er the attractive force of suction.

13. A suction-roll having its cylinder and .suction-box arranged for longitudinal adtween the box andinterior surface of the.

cylinder.

- 15. A suction-roll wherein relative lon tudinal movement is allowed between ti suction-box and cylinder, the line of movement being inclined to ornon-parallel with the interior surface of`the' cylinder, a sprin forcing the -box and cylinder in contact, an stop-means limiting the .relative movement under the forceof said spring.

16. A suction-roll wherein the pressure of contact between the suction-box andinterior. -,s l'irface of .the cylinder is controlled by relative longitudinal adjustment between said I members', and mea-ns for regulating such adstrumentality 'located at one end of the cylinder. I

17. In a suction-roll, the'combination of the cylinder and suction-box therein, onev longitudinally-adjustable relatively for reg` ulating the pressure of ontact between the box and. interior surface the cylinder, cyla single A inder-bearings, and heads 'rigidthe-rewith, slidably-tted to said heads the box bein for guiding t e longitudinal movement.

1 8. In a suction-roll,.the combination of the cylinder and suction-box therein, cylinder-supports in which the cylinder has its bearings, box-supportscarried by and rigid with t e cylinder-supports, the box and the cylinder being arranged so that one is longi- 'tudinally-adjustable relative to the-other,

regulating the pressure of contact there-4 between, and the adjustable member being sli'dable in its supports. 1

19. In a suction-roll, the combination of the cylinder and suction-box therein, one longitudinally-adjustable relatively for regulating the pressure of contact between the box and interior surface of the'cylinder, cylinder-bearin'gs, and heads coaxial therewith and slidably-tted to thebox for guiding the longitudinal movement.

'20. In a *suction-roll, the'combinati'on of the cylinder and suction-box therein, one longitudinally-adjustable relatively for regulating thev pressure of contact between the box and interior surface of the cylinder, a spring yieldingly forcing l the adjustable member in a direetionto tact, and stop-means limiting the action of said s' ring.-

reserve the con- 21.. n a suction-roll, thecombination of -the cylinder and suctlon-box therein, one

longitudinally-adjustable relatively for regulating the pressure of contact between tht` box and interior surface' of the cylinder, supports for the 'box and cylind to which the adjustable member is movable, means o ratin between a support and the adjustab e mem r for. forcing said member in a direction to preserve the contact, and means o eratin between a support and said- 'adjustabge mem er for limiting the pressure of such contact.

22. In a suction-roll, the combination of the cylinder and'4 suction-box therein, one

longitudinally-adjustable relatively for`reg' vulating the vpressure of contact between the box and interior surface 'of the cylinder, supports for thebo'x and cylinder with relation to which the adjustable member is movable,

and an adjusting instrumentality 4operating between a support and the movable member for regulating the longitudinal adjustment.

n a suction-rol the' cylinder and suction-box therein with 'rovison for maintaining air-tight contact erebetween by forcing one endwise relative to the other, sup orts provided with cylin-l der bearings, an an adjusting instrumeny-tality operatmgbetween a sup rt and the box to llmit the-.pressure of suc contact.

the combination ofl with relation 24. In a suction-roll, the combination'of the cylinder and suction-box therein, one longitudinally-adjustable for regulating the pressure of contact therebetween, non-rotat- 'for regulating 'the adjs'tment.

ing, members or heads concentric with the cylinder and relativeto which the box is movable, 4and an djustingscrew extending through a head and connecting with tlieboxv 25. In a suction-roll, 'thecombina'tion-'of the cylinder andsliction-box therein, -one longitudinally-,adjlstable' re1atively,"the cyl 4 inder having a tapered 'interior surfaceand 1o the contacting `face of'the'box being'cori'cspondingly inclined, supports for tliecyl-v `inder and box relative to which one is slid#1 able, and a-nadjusting" instrumentality operating between such slidable member 'and a support.

26. In a suction-roll', the combination of the cylinder and suction-box` therein, one longitudinally-adjustable relatively, the cylinder having a tapered interior surface and the contacting face of the box being corre;

spondingly inclined, cylinderl bearings, l heads rigid therewith providing guides with the.box,'"'and an adjsting instrumentality 'operating between ahead andthe box.' ,e 27.In `a "snctionroll, the combination yof.l the cylinder and suction-box therein, 'one' member being longitudinally-adjustable for regulating the pressure of contact" between ythe boxand interior surface ofthe cylinder,

cylinder ,-"bearings, 'rand box supports rigid 'therewith' and singularly-adjustable about.

the axis ofthe cylinder for setting the box'v atfdi erent angular positions in thccy1in- In testimony whereof I aiixmy signature,

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