US280123A - bdttee - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. 0. BOTTER.

PAPER MACHINE.

(No Model.) 3 Sheets-Sheet. 2.

0. 'BOTTER.

PAPER MACHINE.

No. 280,123. Patented June 26, 1888.

ZM Z f %M( f (N0 Model.) 3 Sheets-Sheet 3.

0. B'0' TER. PAPER MACHINE.

No. 280,123. I Patented June 26, 1883.

ject of my invention.

UNITED STATES PATENT @FFICE.

CARL BOTTER, OF OBER-URSEL, PRUSSIA, ASSIGNOR TllO-LEOPOLD ZEYEX, OF RAGUHN, ANHALT, GCRMANY.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent No, 280,123, dated June 26, 1883.

Application filed March 8, 1883. (No model.) Patented in Belgium February 28, 1883, No. (50,588; "in France February 28, 1883, and

in England February .28. 1883, No. 1.084.

to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

In view of the limited tenuity of the fibrous materials now employed in the manufacture of paper, and the rapidity with which the paper is made to travel through the paper-making machines, repeated breaks occur, which are due either to irregularities in the function of the prime motor or in the mechanism of the machines, as well as to the variations (due to atmospheric influences) in the lengthsflof the driving-belts.

The object of my invention is to avoid these frequent breaks by mounting the feed or guiderolls in. resilient bearings that will counteract and compensate any irregularity in the function of the operating mechanism, and consequently in the tension of the paper lengths,

between two such rolls or sets of rolls, hereinafter fully described, and shown in the accompanying drawings, in which+ Figures 1 and 2 show in elevation and by a plan view, respectively, one construction of appliances by means of which I attain the ob Fig. 3 is an under side view of the bearing proper. Fig. 4 is a side elevation illustrating means for adjusting the tension of the springs. Figs. 5 and 6 show in elevation other constructions of appliances for attaining the desired results. Fig. 7 is a sectional side elevation, S aplan view, and Fig. 9 a transverse section, of my improved bearing, showing means for annulling the clastic resistance of the weight of the guide-rolls.

Likeletters of reference indicate like parts in the above figures of drawings.

In papermaking machines as heretofore constructed the guide-rolls are mounted in bearings rigidly connected to their standards or to the framing of the machine; and if any irregularity occurs in the speed of these rolls, or in the speed of any of the other operating devices, or in that of the prime motor, the paper at.-some point is unduly stretched and breaks, causing serious losses both in material. and time.

This invention is designed to reduce to a minimum the occurrence of these breaks, it not to 'overcome the difficulty entirely, by mounting the rolls in bearings adapted to yield to any excess in the normal tension of the paper in any direction, or to take up the slack, if such should occur. arious means may be employed for eti'ecting the desired result; but whatever may be the nature of the mechanism employed for imparting the necessary yielding or resilient properties to the bearings, it is desirable that the movements of the latter should be as free as possible upon the supporting devices for such bearings by reducing the friction upon such supporting devices to a minimum. This is best effected by mounting the bearing B upon anti-friction rollers 11, as plainly shown in Fig. 3. To impart the necessaryresiliency to the bearing 13, various appliances may be employed-for instance, as shown in Figs. 1 and 3.

S indicates a standard, the head S of which has a longitudinal slot, .9, for the reception of one oft-hepillow-blocks or bearings B, in which the guide-rolls of a paper-making machine are mounted, said slot 8 forming a way upon which thebearing is adapted to ride or slide. The bearing 3, mounted on anti-friction rollers R, as set .forth, is provided with lateral projections or ears I), the standard S having like projections, 8, formed at the rear end of the slot .9, to whichprojections are secured the ends of coiled springs A, that impart to the bearing the necessary resiliency. As shown, the bearing B is held and guided in the slot 8 ofthe supporting-standard by means of flanges b, projecting from the upper and lower edges of its lateral faces.

It will be found desirable to provide means [or adjusting the tension of the springs A, in. which case the rear end of the said springs is attached to lateral projections c of a slideblock, C, Fig. 4, said block being made adjustable by means of a set bolt or screw, 1),

may be employed, as shown in Fig. 5, and instead of the spring or springs other equivalent mechanical devices may be combined with the bearing Bas, for instance, a weighted lever, as shown in Fig. (i. The bearing B, Fig. (5, is connected by a universal or ball-and-socket joint, J, with a link, R, pivoted to the short arm L of a bell-crank, L, that has its fulcrum 1 upon a suitable standard or projection, S

connected with or formed on the head S of the supportiug-staudard S, the said head being suitably slotted for the passage of said short arm L down. into the slot s. The long arm L of the lever Lcarries a movable weight, \V, by means of which the resiliency of the bearing B is adjusted. It the lever L is so arranged that the link R will lie horizontal (or practically so) in the slot s during the slight movements of the lever L, the power exerted thereby upon the bearing will be practically unit'orm. For that portion ofthe paper length which is not yet fully pressed, and yet in a wet condition, the elastic resistance of the weight of the guiderolls should be equilibrated or counterbalanced, which is eit'ected as follows, referring more especially to Figs. '7, 8, and 9, in which ll are spindles or upright supports, in the upper ends, c, of which are formed conical recesses, that serve as bearin for the conical or pointed screws F, screwed in. flanges or cars If, formed on opposite sides of the pillowblock or bearing B. spindles E is cone-shaped, and is stepped in conical recesses on, formed in a supporting or bearing plate, M. In order to distribute the weight of the roll and its bearings equally upon the spindles E, and to adapt the former for adjustment, the plates M arcmade adjustable both vertically and longitudinally by means of the set-screws N O at opposite ends of the plates. The setscrew N is pointed or conical, and has its bearing in a correspondingly-shaped groove formed in the base of the standard S. The forward end of the bar M is slotted, the set-screw O passing through the slot into the base of the standard, whereby, as aforesaid, the bar M is made adjustable vertically and longitudinally.

It is obvious that with the construction described the devices employed for imparting the necessary resiliency to the bearings will take up and counteract any shock or strain that would tend to displace the guide-roll horizon- The lower end 0' of the tally from its normal position, the resistance of the bearings to such displacement being that exerted by the spring, springs, or lever only, since frictional resistance of such bearings in the slot .9 is practically annulled. This method is therefore admirably adapted to prevent the ill effects resultin from variations in the speed of the rolls of a paper-making machine, which may be a difierential speed in the rolls of one of the several groups of rolls, or a diit'erential speed in the collective rolls of two or more groups of such. By adjusting the rolls to a maximum workingtension and making them sensitive to'the slightest irregularity in their speed through the medium of appliances as described, the paper length will be stretched or contracted, according as the disturbance in the speed occurs in. one or the other set of rolls. The construction or paper-making machines will be materially influenced by this method. Not only are the dit'ficulties heretofore encountered of increasing the number and properly groupi n the drying-cylinders avoided, but th 0 use of calendering-rolls between and in rear 01:" the drying-cylinders, even for paper that is largely composed of wood, is made possible, and which, although very much desired, has

not been possible in machines operated at high speed and constructed as usual.

Although I have described the resilient bear in as more especially applicable to the guide rolls of paper-making machines, they may be advantageously employed in other machines where adjustable yielding or resilient bearings are desirable. 7

Having thus described my invention, what I claim is- 1. The herein-described method of obviating the detrimental effects of a variable speed in the prime motor or operating devices or paper-making machines, which consists in varying the length of paper between two or more feed or guide rolls or sets of such, according to the variations in their speed and consequent variation in the tension of the paper, whereby said tension is maintained practically uniform, substantially as described.

2. In a paper-making machine, the comb] nation of two or more guide or feed rolls or sets of such mounted in resilient bearings, sub stantially as described, for the purposes specitied.

3. The herein-described resilient bearings, consisting of the pillow -block or bearing, mounted on anti-friction rollers and arranged to ride in a way formed in its support, in com bination with appliances, substantially such as described, to impart resiliency to the bearing, as and for the purposes specified.

4c. The support S, having guide-slot s, in combination with the bearing B, mounted on anti-friction rollers, and one or more springs, A, substantially as described, for the purposes specified.

5. The combination of the support S, having gui de-slot s, with the bearing B, mounted on an- IIO roll of a paper-making machine, its bearings,

and a slotted support therefor, of verticallyadjustable spindles, upon and with which the bearing may oscillate, and appliances, sub stantially such as described, to impart resiliency to the movements. of such bearings, substantially as and for the purposes specified.

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

oAnL' BOTTER.

Witnesses: v F. VoGELnn,

J. GRUND.

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