US895283A - Suction-roll for paper-machines. - Google Patents

Description

` WQ H.- MILLSPAUGH.

I SUGTION' ROLL POR PAPER MACHINES. v Arljllmcnlox HLBD MA3.12,1901.

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v3 i u PATBNTED AUG. 4, 1908.

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ATBNTED AUG.'4, 1908.v

Y W.. H. MILLSPAUGH. 1

S'UGTION ROLL POR PAPER MACHINES. l l.r3PlPLIGATION FILED MAR 12 1907 y wwwa-* .the ren, rsp

unirsi) ASTATES WILLIAM H. MILLSPAUGII, or SANDUSKY, oHIo, AssIGNoR or ONETHIRD 'ro I. i..DAucH AND oNnrHIRD To WILLIAM F. HARBREcH'r, or SANDUSKY, omo-AND ONE-THIRD 'ro FRED BOERGER, OF DELPHOS, OHIO.

' sUcTIoNRoLnFoR rnrnauncmns.

:rolls' which are employed in paper-making machinery for extracting water and moisture from the paper-pulp while it is forming on an interstitial or porous conveyer, such as the rnaking wire or telt. As the pulp-conveying iveb asses over or partially around the roll, the atter being perforated or' fenestrated, the extraction of moisture is e'l'ected by suction or creation of a vacuum inside the'roll, which for that purpose contains a non-rotative suction-bon or chamber in communication with a. vacuum-pump or exhaust apparatus; the open top oi seid suction-box bemg in close contact` with the interior surface of the roll. Although these suction-rolls, re volving with the same surface speed as that of the conveying web, 'possess the advantage or avoiding friction and Wear on the wires or tearing `of the elts, yet the 'have not heretofore been brought to a satis actory degree of perection, either in mechanical construction or character of operation. A material defect has been the diculty of y maintaining the suction-box in air-tight contact Withthe roll, so as to eilectively utilize the suction, .while at'the same time obtaining the exact degree ofpressure desired and preventing l hex from becoming locked to Uy under iniuence of ahepvy e tial vacuum, which re uires additional poner to run the roll or c l nder and causes' more or lessdrsg and inter erence with the proper operation of the mechanism. Another deiciency in this class of devices, has been the lack of convenient means 'for setting the suction-box at different angular Vpositions in the roll or cylinder, in order lao-adapt the latter to the line of travel of the pulpconveying`web, which in some machines 'ma .pass centrally over the top of the roll,

wlule in others it may pass over or partiell?7 around the roll more orless at onesxde thereo 4 YSpeccation. o! Letters Patent.

Application filed March 12, 1907. Serial No. 962,058.

. nnrssonn i Patented Aug. d, 1908.

The foregoing and other objections are obviated by my present invention, which aims to provide a suction-roll that is mechanically erfect, durable and `highl efficient, and aving practicable means or'securing ad justment of the suction-box both radially land angularly, `and for holding said box in perfect air-tight contact with the interiori surface ofthe revolving shell while Tet pre`| venting locking of the box to the shell.

The accompanyingdrawings, which are to be taken as a art of this specification, illus- Atrate two. em 'odiments of my invention,

which may also be embodied in other forms and may be modified as to details of construction and arrangement of parts. Without restricting myself, therefore, to these specific illustrated constructions,- the invention will hereinafter be fully described With reference ,to said drawings, and then more particularly pointed out and defined in the appended claims.

Figure 1 of said drawings is a side elevation ofa machine embodymg my Invention, an intermediate portion of the" roll being broken away.` Fig. 2' is one end view there# of. Fig. 3 is the opposite end view thereof. Fig- 4 is a central longitudinal vertical section of the same. F ig. '5 is a cross-section online 5-45 of Fig. 4, looking in the direction of the arrow. Fig. 6 is a cross-section throu the roll and suction-box. Fig. 7 is a centr other machine embodying 'my invention. Fig. 8 is an end view thereof. Fig. 9is a plan view of one of the heads which support the suction-box. Fig. 1-0 is a central horizontal section through seid head, showing the end of the suction-box in nien view.

Reierrinx7 to Figs. 1 to 6 inclusive, the per' latter are or may he constructed as supporting brackets for the roll.

W'ithin the shell or cylinder is the longitudinally-disposed suction-box C, the open top of which conforms to the curvature of longitudinal vertical section of arl-- and'fits closely against the interior surface ofthe shell, at the upper side thereof; there be v mg' Aa packing stripor strips c seated in a groove or rabbet entirely surrounding said open top, to take the wear and form an air-tight juncture with the surface of the shell, as usual 1n devices of this class. 4The suction-box C roper has tubular ends D,

openftopped portion of the box, which alone.

constructed or ormed lower than the medial bears against the interior surface of the cylinder. One or both of said ends D, preferably both, is or are adapted for'cc'rm'nunication with' a suction-pump or other exhaust apparatus; the extremities of said ends D bem shown longitudinally threaded for coup ing to pipe connections Withsaid pump.

At opposite ends ofthe cylinder'are circular heads E, in which the ends D of the suction-box are spring-supported as hereinafter described, allowin the necessary radial play or motion of the box to adjust the pressure with which it' bears against the interior sur face of the shell.

larly, being secured in clamp-rings F, which latter are rigidly attached byscreW-bolts -or studs to the sides of the bearings or annular brackets l. On loosemrgl the clamp-bolts or studs f, the itwo heads la can be turned in or. partially around the roll or cylinder.

The heads E are provided,alon diametl' 40 rical openings or Ways therein, .Wit parallel Aguides e, made preferably on` the outer sides of the heads; and the ends D of the suctionvbox, extendin' through said o`enings, are slidably iitted betiveen said guidi' ter being faced with brass or other a propriate material, and the box-ends D etween the guides being constructed or provided with ila-t side-plates or facings d of similar metal or material, to preserve a smooth sliding bearing and prevent rust and consequent locking of thel box in the guides. In said heads E, under the ends D of the suction-box, are mounted stout coil s rings H, which lift up the box and yielding y but forcibly su 55 port it with its open face 1n contact with t e 'interior surface of the cylinder A. Said springs are shownseated on bosses h in the lower parts of the heads, and having their upper ends fitted to bosses h' on the bottoms ov the ends of the suction-box; and, to per- 4mit adjustinthe tension or pressure of the s rings, saida bosses h, h may comprise anged nuts tapped on threaded studs, whereby the nuts may be adjusted to con` tract or distend the springs, as desired. The

Sald heads E arestation-k `.\a ry, but are adapted'to be adjusted an upward lift ofthe suction-box is limited by a justable stops J vconsisting of set-screws, one at each en d of theroll, tapped through pro'ect-ions e ont-he outer sides of the heads e, a, ove the ends D of the box and bearing .on the la.tter;.the said setscrews being 'ses It Will thus be sccn that the suction-box, having its ends alined in .the guides e, is assured a'perfectly radial play or motion; and, the' box being constantly forced upward. by the power of its supporting springs f., its open top is at'all times held positively m air-tight Contact with the interior surface of the roll or cylinder, thus preventing liability of leakage lor waste or destruction of the vacuum, and insuring the effective' utilization of the suction; while., at the same time, the vacuum is'prevented from unduly lifting the box and locking it to the shell, and the beari fr pressure of the box against the shell is eas y regulated, all adjustrnenis necessaryv being made b .the two set-screws J, which may be manipu ated by a. common Wrench.

In view of the foregoing, the roll may be operated as safely as and with .no more trouble than an ordinary press-roll; no more air need be removed from the roll than passes through the paper and felt, which means that the pump may be-of moderate size; and it is entirely practicable to maintain 'a vacuum such as necessary to secure maximum working results, without requiring excessive povver` to'ruri the machine; In addition to these advantages, the roll accomplishes an improved grade of work, enabling the operator to obtain dryfelts and paper for delivery to the presses, and a sheet more free from felt marks, and'thicker bv #age if pressed to the same dryness and delivered to driers at "the same percentage of dryness as ith old methods, or a sheetdrier when delivered to driers at the same thickne as with old methods, thereby lesseni'ng the amount of steam used to finish, or, if same steam be used, securing greater speed and-production. Numerous minor advantages appear in the operation of the machines.

For driving the roll or cylinder A, it is 'shown in Figs. 1 and 3 vided .with a gear Kin mesh with a pinionkla, the. shaft of which pinion is journaled in a box l therefor constructed on or as a part of one of the annular bearing brackets B.

The machine shown in Figs` 7 and S is substantislly similar to that already described, except in the following particulars. In this embodiment of my invention, the separato clamp-rings (indicated by the letter F in Figs. 1 to 6 inclusive) are dispensed with, and the heads E, .which support the suction-box are mounted in annular brackets or standards Bf, and aresecured in fixed position therein b v means of set-screws b', which of course permit angular adjustment of thc heads in order to set the b ox at different angular positions. In'thiscase, the shell or cylinder A may be revolubly journaled on or in the brackets B', or on the heads E, the lattei; construction being shown, that is the ends of the cylinder are shown revolublv fitted on inward flanges on the said heads E.'

I claim as my invention and desire to sccure by Letters Patent 1. In a suction-roll, the combination with the revoluble perforatedc linder and suctionbox therein, of means yie dingly forcing said box in Contact with thel interior surface of tion-box therein, of means yieldingly forcing said box in contact with the interior surface of said cylinder, and adjustable stops limit -ing the lift of said box toward said surface and affording regulation of the contact of said box with said surface.

3. In a suction-roll, the combination with the revoluble perforated cylinde` andsuc'-` tion-box therein, of means yieldingly supporting said box and thereby maintaining it in contact with the interior surface of said cylinder, and means operating opposition to said supporting means for regulating the bearing pressure of the box upon said surface.

4. Ina suction-roll, the combination with the revoluble perforated cylinder and suction-box ytherein' of 'means sup orting or foiicing said box in 'contact with t e interior surface of said cylinder, and stops arranged to limit the lift of said box and preventlocking thereof to said surface under infi'uence of the vacuumoi' suction.

5. In'a suction-roll, the combination vviththe revoluble perforated cylinder and sution-box therein, of stationary heads having radial or'diametrical guides in which the ends of the box are slidably-fitted, spring-supports for said box located under the ends thereof in said heads, thereby forcingl the open top of the box in contact ivith'the interior surface of said cylinder, and set-screws carried by said heads above theend's of the box andl bearing thereon, thereby affording adjustable means' for limiting'the lift of said box toward'said surface. f

6. In a suction-box, the combination of the revoluble perforated cylinder having stationary heads, a longitudinal i suction-box therein havin Van open-top ed portion in contact with t e interior surfice 'of said cylinder and having tubular portions extending through diametrical or radial Ways or openings in said heads, sprin supports mounted in said heads under and earing up the ends of said box, and projections on said heads above the ends of the'box and zet-screws tapped therethrough limiting-thc lift of the box.

7. In a suction-box, thel combination .of-l

the revolubleperforated cylinder and suc-v tio'n-box therein,A the latter beingredially adjustable and having means forcingit 1n contact with the interior surface of'said cylindes., and stationary guideways for the ends of said box in which the latter are slidsblyfitted, said guide-Ways and the contacting sides of the ends of the box having non-corrosive facings to prevent rust and ocking of the box in said guide-ways.

8. In a suction-roll, the combination of the revoluble perforated roll and suction-boxtherein, of stationary heads supporting the ends of said box, springs-carried b v said heads and bearing upv the box, and Set.

screws tapped through ears on .said heads and bearing upon the box..

9.' In a suction-roll, he combination with a revoluble perforated cylinder and suctionbox therein, of s ring-supporting means for said box holding its open top in contact with the interior surface of the cylinder, guides for` i.

said box arrangedradially of said cylinder,"

and adjustable stops limiting the pressure or .lift-of said box against said cylinder.

10. In a suction-roll, the combination with the revoluble perforated cylinder, of ststionary but singularly-adjustable heads, a iongitudinal suction-box Within said cylinder and i supported by .said heads, niesns vi-hereby said box can be set at different angular tions in-said cylinderand in Contact the f interior surface thereof, and ineens carried by said heads for adjusting said box rn reiation to its bearing on the interior surface-of said cylinder.

11. In a suction-roll, the combination with the revoluble perforated cylinder, of s. nonrotative suction-box therein, stationaifheads in which the ends of said box are mnvably supported, means bearing said box in con'- bearings or supports for said heads in iii'hich the latter are 'angularly adjustabie, and

means for iixedly securing said heads in said bearings or supports.

12.' In `a'suction' roll, the combination with the revoluble perforated cylinder, of a non: rotative su ation-box therein, stationaryheads in which the ends of said. box are ineably ings'or supports, and tie-rods connecting tact with the interior surface of said cylinder, i

said heads and causing thein to be adjustable only in unison. t

13. In a suction-roll, the combinaison of annular brackets, heads fixediy-secured but singularly adjustable therein, a revoluhie perforated cylinder having its ends journsed in or on annular bearings provided by the sieresaid elements, and a longitudinal suction-box 12e for iixedly securing said heads in said bearvthere-ln having'its ends niova-bly-suppo'rted ination of a vbox in said cymder su ported by sai-d heads.

15. In a suction-rol the com revoluble perforated cylinder, stationary heads therefor, means for singularly adjust- Y ing said heads, annular bearings for the ends of wfd cylinder with said heads, and a 15 suctionbox Within the cylinder supported by said heads.

In testimony -whereof 4I affix my signature, in presence of two witnesses.

YVILLLDI H. MILLSPAUGH "tnessesr GEO. A. BIAGKFORD, MARTHA LrmJER.

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