USRE13100E - Suction-roll for taper-machines - Google Patents

Description

w. H. MILLSPAUGH.-

SUCTION ROLL FOR. PAPER MACHINES. Reis'sued Apr.,12, 1910.

APPLICATION FILED MAR. 26, 1909. I

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W. H. MILLSPAUGH.

SUCTION ROLL FOR PAPER MACHINES.

APPLICATION FILED MAR. 26, 1909. Relssued Apr. 12, 1910.

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APPLIYIUATION FILED MAR. 26. 1909. Relssued Apr. 12, 1910. r

a sums-sum s.

UNITED STA' J F E PATENT OFFICE.

WILLIAM H. MILLSPAUGH, OF SANDUSKY, OHIO, ASSIGNOB OF ONE-THIRD 'JJO J. J.

DAUCH, ONE-THIRD TO WILLIAM F. HARB RECHT, BOTH OF SANDUSKY, OHIO, AND ONE-THIRD TO FRED. BOEBGEB, OF DELPHOS, OHIO.

SUCTION-ROLL FO R PAPER-MACHINES.

Specification of Beissued Letters Patent. Reissued Apr. 12, 1910, Original No. 895,283, dated August 4, 1908, Serial No. 362,058. Application for reissue filed March 26, 1909.

Serial No. 486,039.

- To all whom it may concern:

Be it known that I, WILLIAM H. MILLS- PAUGH, a' citizen of the United States, re siding at Sandusky, in the county of Erie and State of Ohio, have invented certain new and useful Improvements in Suction- Rolls for Paper-Machines; 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. 1

This invention relates to revolving suction-rolls which are employed in papermaking machinery for extracting water and moisture from the paper-pulp while it isv top ofsaid suction-box being in close con-,

tact with the interior surface of the roll. Although these suction-rolls, revolving with the same surface speed as that of the pulpconveying. web, possess the advantage of.

' avoiding friction and wear onthe wires or tearing-of the felts, yet they have not heretofore been brou ht to a satisfactory degree of perfection, eit ier in mechanical construction or character of o eration. A material defect has been the dif culty of maintaining the suction-box in air-tight contact with the roll, so, as to effectively utilize the suction, While at the same time obtaining the exact degree of pressure desired and preventing the box from being locked to the roll, es-

. pecially under influence of a heavy suction or-substantial vacuum, which requires ad-.

ditional power to run the roll or cylinder and causes more or less drag and interference with the roper operation ofthe mechanism. Anot er usual deficiency infthis class of devices has been theflack of convenient means for settin the suction-box at different an lar positions in the roil or cylinder, in orde r to adapt the latter to the hue of travel of the pulp-conveying iveb,

in the direction of the arrow.

I which in some machines may pass centrally over the top of the roll, while in others it may "pass over, or partially around the roll more or less at one side thereof.

The foregoing and other objections are obviated by my present invention, which aims to provide a suction-roll that is mechanically perfect, durable and h ghly eflicient, and having practicable means for securing adjustment of the suction-box both radially and angular-1y, and for holding said box in perfect airtight contact with the interior surface of the revolving shell while yet preventing locking of the box to the shelL' The accompanying drawings, which are to be taken as a part of this specification, illustrate two embodiments of my invention, which may also be embodied in other forms and may be modified as to details of construction and arrangement of arts. Without restricting myself, there ore, 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 clalms.

Figure 1 of said drawings is a side sieve-- tion of a machine embodying my invention,

an intermediate ortion of the roll being broken away. thereof. .Fig. is the opposite 'end view thereof. Fig. 4 is a central longitudinal Fig. 5 is a g." 2 is one end View vertical section ofthe same. cross-section on line 55 of Fig. 4, looking I Fig. 6 is a cross-section through the roll and --suction-' box. Fi '7 is a central longitudinal vertical section my invention. Fig. 8 is an end view the! Fig. 9 is a plan View of one of the heads Fig. 10 is a central horizontal seotlon through said" which support the suction-box.

head, showing theend-of 'the suction 'box in plan view.

Referring to Figs. 1 to --6 inclusive, *the' perforated shell or cylinder A is shown having its imperforate ends revolubly fitted or journaled in annular bearin B, the

latter being suitably hushed or ined with hard metal. Said bearings are represented as so arable, their upper half-parts or semicireu ar sections being mounted and detachof. another machine embody-'iwng I ably secured,

tudinally-disposed suction-box C, the open' top of which conforms to the curvature of and fits"closely against the interior surface of the shell, at the upper side thereof; there slidabl being a packing strip or stripsc seated m a groove or rabbet entirely surrounding said Open top, to take the wear and form an airtight juncture with the surface of the shell, as usual in devices of this class. The suction-box C proper has tubular ends D, constructed or formed lower than the medial 'opentopped portion of the box, which alone bears against the interior surface of the cylinder. 'One or both of said ends D, preferably both, is or'are adapted for communication with a suction-pum or other exhaust apparatus; the extremit es of said ends .D bein shown longitudinally threaded for coup ing to pipe connections with said pump.

At opposite sides of the cylinder are circular heads E, in which the ends D of the suction-box are spring-su ported as hereinafter described, allowing t e necessary radial play or motion of the box to adjust thejpressure with which it-bears against the'interior surface of the shelL, Said heads E are stationary, but are adapted to-be adjusted angularly, being secured in clamp-rings F, which latter are rigidly attached by screwbolts or studs to the sides of the bearings or annular brackets B. On loosenin the clamp-bolts or studs f, the two heads%@ can be turned inthe clamp-rings to set the suc tion-box C at any desired angular position, according to the line of travel of the pul conveying web, as the makin which passes over or partial y around the roll or cylinder. Longitudinal tie-rods G connect the opposite heads and make them a rigidstructure, so that they are adjustable in umson. l

The heads E are provided, alon diamet rical openings or ways therein, wit parallel 'des 6, made preferably on the outer sides of the heads; and the ends D of the suctionbox, extending through said openings, are fitted between said guides e; the

latter ing faced with brass or other appropriate material, and the box-ends D between the guides bein constructed or prov d'ed withflat side-p ates or facings d of s1m1lar, metal or material, to preserve a smooth sliding bearing and prevent rust and consequent locking of the box in the guides. In said-head E, under the ends D of the suction-box, are mounted stout coil s rings a H, which. lift up the box and yielding y but forcibly support it with its open face in contact with the interior surfaceof the cylinbox; and, to permit adjusting Theupward lift of the topis at all times held positive y in wire or fe t,

and production.

, annular bearing brackets B.

der A. Saidsprings are shown seated on bosses hin the lower parts of the heads, and having their upper ends fitted to bosses h on the bottoms of the ends of the suctionthe tension or pressure of the springs, said may comprise ed studs, whereby the nuts may be adjusted to contract or distend the" springs, as desired;

suction-box is limited by adjustable stops J consisting of setscrews, one at each end of the roll, tapped through pro ections e on the outer sides of the heads E, above the ends D of the box and bea'ring on the latter; the said. setscrews being secured by lock-nuts 7'. It will thus be seen 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 upwardby the power of its supporting sprin H; its open air-tight bosses h, h flanged nuts tapped on threadcontact with the interior surface of the roll or cylinder, age or waste ordestruction of the vacuum, and insuring the effective utilization of the is prevented from unduly lifting the box and locking it to the shell, and the bearing pressure of the box against the shell is easily regulated, all adjustments necessary being thus preventing liability of leak-' suction; while, at the same time, the vacuum made by the two set-screws J, which may be manipulated by a common wrench.

In view of the foregoing, the roll may be operated as safely as and with no more trouble than an ordmar ress-roll no more air need be removed om the roll than passes throu h the paper and felt, which means that t e pum may be of moderate size; and it is entire y practicable to maintain a vacuum such as necessary to secure maximu'm'working results, without requiring excessive. addition to t ese advantages, the roll accomplishes an improved grade of work, en-" abling the o erator to obtain dry felts and paper for de ivery to the presses and a sheet more free from felt marks, and thicker by gage if pressed to the same dryness and delivered to'driers at the same percentage of dryness as with old methods, or a sheet drier when delivered to driers at. the same thickness as with old methods, thereby lessenin the amount of steam used to finish, or, i

same steam be used securing greater speed tages appear in 61111188. For driving the roll orcylinder A, it is shown in Figs. 1 and 3 provided with a gear K in mesh with a pinion L, the shaft of which pinion is journaled in a box I therefor constructed'on or as a part of one of the The machine shown in Figs. 7 and 8 is ower to run the machine. In

hlumerous minor advan the operation of the. ma

' 15 heads E, the latter con substantially silnilar'Ito that already described, except in the following particulars In this embodiment of my invention, the separate cla1np-rings (indicatedby the letter 5 F in Figs. 1 to 6 inclusive) are dispensed" with, and the heads E WhlCll support the suction-box are mounted in annular brackets or standards 13, and are secured in fixed position therein ,by means of set-screws 6', which of coudse permit angularadjustment of the heads in order to set the box at dif: ferent angular-positions. In this case, the shell or cylinder A may be rerolubly journaled on or inthe brackets B, or on the struct-ion being shown, that is the ends of the cylinder are shown rcvolubly fitted on inward flanges on the said heads E.

I. claim as my invention and desire to sei 6 cure by Letters Patent 1. In a suction-roll, the combination with the revoluble perforated cylinder and suction-box therein, of means yieldingly forcing said box in contact with the interior surface of said cylinder, and means limiting the lift of said box toward said surface.

2. In a suction-roll, the combination with i the revoluble perforated cylinder and suction-box therein, of means yieldingly forcing said box in contact with the interior surface of said cylinder, and adjustable "stops limiting the lift of said box toward sald surface and affording regulation of the contact 'of said box with said surface.

' 3. In a suction-roll, thecombination with the revoluble perforated cylinder and suction-box therein, of' means yieldingly supporting said box and thereby maintaining it in contact with the interior surface of said 40 cylinder, and means operating in opposition to said supporting means for regulating the pearing pressure of the box upon said surace.

4. In a suction-roll, the combination with the revoluble perforated cylinder and suction-box therein, of means supporting or forcing said box in contact with the interior surface of said cylinder, and stops arranged to limit the lift of said box and prevent locking thereof to said surface under influence 0f the vacuum or. suction.

5. In a suction-roll, the combination with the revoluble perforated cylinder and suction-box therein, of stationary heads having radial or diametrical guides in which the ends of the box are slidabl -fitted, springsupports for said box' locate under the ends thereof in said heads, thereby forcing the open top of the box in contact with the interior surface of said cylinder, and setsaid heads above the ends screws carried b of the box and caring thereon, thereby affording adjustable means for limiting the lift of said box towardsaid surface.

05 I 6. In a suction-box, the combination of the revoluble perforated cylinder having stationary heads, a longitudinal suction-box therein having an open-topped portion in contact with the interior surface of'said cyL 'inder and having tubular portionsextending through diametrical or radial .ways or openings in said heads, spring supports mounted in said heads under and bearing up the ends of said box, and projections on said heads ab ove the ends of the box and set-" r screws tapped therethrough limiting the lift of the box. I

7. In a suction-box, the combination of the revoluble perforated cylinder and suction-box therein, adjustable and havin means forcing itin contact with the interior surface of said cylinder, and stationary guideways for the ends of said box in which the latter are slidablyfitted, said guid'e-ways and the contacting g5 sides of the ends of the box having non-cor- 1 rosive facings to prevent rust and locking of the box in said guideways.

8. In a" suction-roll, the combination of the revoluble perforated rolland suction-box 0 therein, of stationary heads supporting the ends, of said box, springs carried by said heads and bearing up the box, and set-screws tapped through ears on said heads and bearing u on the box.

9. n a suction-roll, the combination with a revoluble perforated cylinder and suctionbox therein, 'of spring-supporting means for said box holding its open top in contact with j the interior surface of the cylinder, guides for said box arranged to permit relative movement thereof radially of said cylinder, and adjustable stops limiting the pressure or lift of-said box against said 0 linder.

10. In a suction-roll, the combination with the revoluble perforated cylinder, of stationary but angularly-adjustable heads, a

' longitudinal suction-box within said cylinder and supported by said heads, means whereby said box can be set at different 11o angular positions in said cylinder and in contact with the interior surface thereof, and mea nsocarried by said heads for adjusting said box in relation to its bearingon the interior surface of said cylinder.

11. In a suction-roll, the combination with the revoluble perforated cylinder, of a nonrotative suction box therein, stationary heads in which the ends of said box are movably supported, means bearing said box in contact with the, interior surface of said cylinder, hearings or supports for sald heads in which the latter are angularly adjustable,

Y and means for fixedly securing said heads in said hearings or sup orts.

12. In asuction-ro l,the combination with the revoluble perforated cylinder, of, anonrotative suction-box therein, stationary heads in which the ends of said box are movably supported, means bearing said box 130 the latter being radially 30 in contact with the interior surface of said cylinder, bearings or supports for said heads in which the latter are angularly adjustable, and means for fixedly securing said heads in said bearings or supports, and tie-rods connecting said heads and, causing them to be adjustable only in unison,

13. In a suction-roll, the combination of annular brackets, heads fiXedly-securcd but angularly adjustable therein, a revoluble perforated cylinder having its ends jou'rnaled in or on annular bearings provided by the aforesaid elements, and a longitudinal suction-box therein having its ends ,movably-supported by said heads, and means bearing said box against the interior surface of said cylinder.

' 14. In a suction-roll, the combination of a revoluble perforated cylinder, annular bearings for the ends of said cylinder, clamprings secured to the sides of said bearings, stationary heads secured in said clamp-rings and angularly adjustable therein, and a suction-box in said cylinder supported by said heads. I v

15. In a suction-roll, the combination of a revoluble perforated cylinder, stationary heads therefor, means for angularly-adjusting said heads, annular bearings for the ends of said cylinder 'rigid with said heads, and

a suction-box within the cylinder supported. by said heads.

16. In. a suctlon-roll, the combination of the revoluble perforated cylinder and suction-box therein, one of which is relatively movable and bears against the other to maintain contact between the face of the suction boxfand the interior surface of the cylinder, and limiting means withholding the movable member to limit the pressure of such contact. Y

1-7. In a suction-roll, the combination ofthe revoluble perforated cylinder and suction-box therein, one of which is relatively movable and bears against the other to maintain contact between the face of the suction-box and the interior surface of the cylinder, and adjustable devices withholding' the suction-box and cylinder from contact beyond a predetermined pressure and adapted for regulating the permitted bearing pressure as required.

18. In a suction-roll, the combination of the revoluble perforated cylinder and suction-box therein, one of which bears yieldingly against the other to maintain contact between the face of the suct on-box and the interior surface of the cylinder, and limiting means restraining the yieldingly bearing member to withhold it from bearing upon the other beyond a predetermined pressure.

19. In asm-tion-roll. the combination with the revoluble perforated cylinder and suction-box therein, one bearing yieldingly against the other to maintain contact beable-limiting means withholdinglthe yieldingly bearing member tolimit t e pressure of such contact and regulate the permitted bearing pressure astrequired. i

20. In a suction-roll, the combination with the revoluble perforated cylinder and suction-box therein, of meansyieldingly holding one against the other to maintain contact between the face of the suction-box and" the interior surface of the cylinder, and adjustable stop means to limit the pressure of such contact between the two members as required. I

21. In a suction-roll, the combination with therevoluble perforated cylinder and suction-box therein in contact with the interior surface of said cylinder, one bearing yieldably against the other to maintain such contact, and stops limiting radial pla of one'toward the other and-thereby limiting the pressure of such contact.

22. In a suction-roll, the combination of the revoluble perforated cylinder and suction-box therein, one bearing against the other to maintain contact between the suc-' tion-box and the interior surface of the cylinder,non-rotating heads to which the ends of the cylinder are revolubly titted, said heads and .the boxhaving coacting guides for the relative movement between the box andf cylinder, and adjustable stops carried by said' heads which withhold the box and cylinder; from contact beyond a limited pressure. K I

23. In a suction-roll, the combination of the revolving perforated cylinder and suction-box therein, one bearing against the other to maintain contact between the box and interior surface of the cylinder, non

rotating members or heads rigid with the' cylinder bearings and having guides I arranged upon chordsparallel to a median rad al line for the box, and stops carried by -said members to limit the bearing pressure between the box and cylinder...

24. In a. suction-roll, the combination with the revoluble perforated cylinder and suctionbox therein, of means supporting said box in'conta'ct with the interior surface of the cylinder, said supporting means al-- lowing relative radial a justment between the box and said surface, non-rotating heads concentric with the cylinder and constituting guides for such relative radial adjustment, and adjusting'screws operatin tween said heads and the box to limit the pressure of contact.

25.111 'a suction-box, the combination with the revoluble'perforated cylinder and suction-box therein, of non-rotating cylinder heads, means operating between said box and heads forcing the box and interior surface of said cylinder in contact, and

tween the face of the suction-box andithe I interior surface of the cylinder, of adjustmeans operating in the op osite direction between said box and hea s to limit the pressure of such contact. I

26. In a suction-box, the combination with the revoluble perforated cylinder having non-rotating heads of a suction-box therein, said heads belng provided with radial guides forsaid box, springs operating between said box and heads whereby the box' and interior of said cylinder are yield- .ingly forced in Contact, and devices acting between said box 'and heads in opposition to. said springs-to limit the pressure of such contact. v

27. In a. -suction-roll,-- the combination with the revoluble perforated cylinder and suction-box therein, of supports for the box holding it in contact with the interior surrior sur In testimony whereof I afiix my signature face of the cylinder, non-rotating heads con I centric with the cylinder and constituting guides for relative radial movement between the box and cylinder, said heads together" in presence of two witnesses. I WILLIAM H. MILLSPAUGH. Witnesses:

A. S. LooMIs, W. H. H. YoUNo.

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