US1489622A - Paper-making machine - Google Patents

Description

April 8 1924. 1,489,622

' E. J. WILSON PAPER MAK ING MACHINE Filed Dec. 2. 1922 s ,9 Q I///////z Patented Apr. 8, 1924.

mxmn J. WILSON, OF EAST GREENBUSE, NEW YORK, ASSIGNOR TO I. C. CHIU YCK & SONS, OF RENSSELAER, NEW A CQBPQRATION OF NEW YORK.

PAPER-MAKING MACHINE.

Application med December- =2, 1m, Serial No. 804,495.

To all whom it may concern:

Be it known that I, EZEKJEL J. WILsoN, a citizen of the United States, residi East Greenbush, in the county of Rensse aer 5 and State of New York, have invented certain new and useful Improvements in Pa er- Makin Machines; an I do hereby dec are the fol owing to be a full, clear, and exact description of the invention, such as will v enable others skilled in the art to which it up ertains to make and use the same.

he invention relates to paper making machines.

In these machines portions of the mois- 16 ture in the web of paper stock formed on the Fourdrinier wire are successively removed by the felt jacketed couch roll at the delivery end of the'wire and by the pressure rolls and feltsof the series of presses 20 through which the web passes on its way to the heated calender rolls which epinp lete the dr ing and finishing of thew'eb.

secure t e most efiicient operation of the machine the couch roll and the pressure rolls of the pressesshould apply as heavy a pressure to the paper stock as is permissible without crushing or injuring the fibres of the stock so that each will remove the maximum amount of moisture and thus rea0 duce the amount which must be subse- .quentl removed by the more ex nsive operatiori of the heated dryer. I l efiicient operation of the couch roll and of the pressure rolls also requires that any ressure applied to a roll shall be applied equall at both ends so that the web of stock wil be subjected to a uniform pressure throughout its width by each of the rolls. It has been found, however, that with the constructions heretofore in use there is a wide variation in the pressure applied by a roll under a given adjustment of the means for pressing the roll a ainst the Web and that there is also a wide variation in the pressures applied by the opposite ends of the roll even when the means for forcing the roll against the web is apparently adjusted to'secure the same pressure at each end of the roll.

It is the object of the resent invention to provide means by whicpressure may be uniformly applied throughout the width of the web of aper stock by any-orall of the rolls app ying pressure thereto so that the proper adjustments may be made to secure the most efiicient operation at. pressure or pressure being applied to the :ficient results.

predetermined ofthe machine' A. further object of the inventionis toprovide means by which the web during its passage through the machine maybe in icated or indicated and recorded atipoints -where they may be conveniently observed and inspected.

To-these ends one feature of the invention contemplates the application to each end-of one or more of the rolls which press upon :me web. of stock, of a spring link through which pressure is applied to the roll, and the provision of mechanism operated bythe resultingdcflection or distortion of'the link to indicat or indicate and record the pressure transmitted therethrough to the corresponding end of the roll. This" enables the proper adjustments to be made in the means for applying pressure to the oppositeends of the roll to secure, that pressure which will give the most eflicient results and also to secure the same pressureat each'gendof'the roll. The application of thisfe'ature' of the invention to each of the rolls which apply pressure to the web also enables the proper adjustments to be. made to secure that relation between the'successive pressing operations which may be found to give the most ef- "To enable the convenient observation of the pressures being applied at the various ends of the rollsand thus avoid the additional attention and the probable neglect on the part ,of the operator, which would and conveniently inspect them to determine whether the proper pressures are being ap plied and to determine what adjustments should be made to correct any indicated variations from normal. The superintendent may also conveniently observe whether the machine is being properly run by the operator. In case recording indicators are utilized the record of the pressures applied by "the various rolls serves also as a check on the operator which indicates any neglect 1,489,622 PATENT OFFICE.

to make the adjustments requisite for the most efiicient operatica of the machine and thus reduces the chances of such neglect or its continuance for any length of time.

The invention will be readily understood from the accompanying drawings in which Fig. 1 illustrates diagrammatically the application of the preferred form of the invention to a F ourdrinier paper machine, Fig. 2 is a detailed end elevation of one of the pressure applying rolls, Fig. 3 is an elevation looking'toward the left in Fig. 2, and Fig. 4 is a diagrammatic detail of one of the indicatin and recording devices.

In Fig. 1 the *ourdrinier wire upon which the paper stock is formed into a web is indicated at 2, the lower couch roll about which the wire passes is indicated at 4 and the upper felt jacketed couch roll which removes a part of the moisture and presses the stockinto compact web form is indicated at 6. The continuous web of paper stock S formed on the wire passes from the couch rolls through a series of preses in each of which a further portion of the moisture is removed by a pressure roll 8 and felt 10. From the last press the partially dried web of stock passes to the heated calender rolls of the dryer which completes the drying and finishing of the web. Each of, the pressure applying rolls, including the couch roll 6, is so mounted that it ma be pressed against the web passing beneath it, and adjustable means is provided at each end of each roll for pressing that end of the roll against the web. As shown each end of each roll is journaled in a pivoted carrier 12 and is forced against the web by a weight 14 adjustably secured on one of two compound levers 16, 1-8, the other one of which is connected with the carrier by a link 20'.

In order that the pressure applied to the end of the roll by the weight and com ound levers may be measured and indicate in a uniformly accurate and reliable manner the link through which the pressure is transmitted to the end of the roll is a spring link connected to operate an indicating mechanism through the distortion or deflection due to such pressure. As shown the spring link comprises an elliptical spring 22, one end of which is connected by a hook 24: with the roll carrier 12, and the other end of which is connected by an adjustable hook 26 with the lever 18.. A variation in the pressure transmitted through the link 22 will result in a movement of the sides of the link toward or away from each other which is proportional to such variation. This movement is utilized to operate an indicating mechanism which, so far as certain features of the invention are concerned, may be of any suitable construction such for instance as a scale and finger mounted on the link, but which is preferably so constructed and operated that its indicating devices may be located at any desired point however remote from the end of the roll. As shown the means for indicating the pressure transmitted through the link 22 c'omprises an electric circuit including two s nchronized magnetic fields 28 and 30 wit in which are arranged two similar armatures 32 and 34. The field 28 is mounted on a late 36 secured to one side of the sprin nk 22, while its armature 32 is mount on the plate to rotate within the field, and its position is determined-b a rack 38 secured to the other side of tie link and engaging a pinion on the ivot of the armature. Movement of the sides of the link toward or from each other will result in a rotation of the armature within the magnetic field and the osition of the armature within the field wil depend upon the relation of the two sides of the link to each other and therefore to the pressure being transmitted through the link to the end of the roll. The other magnetic field 30 and armature 34 are connected with indicating devices which may be arran d at an desired point in the electric circuit an are preferably constructed to record as well as indicate the pressure transmitted through the link 22 to the end of the roll. As indicated diagrammatically in Fig. 4 the magnetic field 30 may be mounted in fixed position while the armature 34 is mounted to rotate within the field and is provided at its axis with a pinion 40 engagin ment 42 secured tothe pivot 44 0 an indicating and recording finger 46. The end of the finger may be arranged to play over a scale calibrated to indicate in pounds the pressure transmitted through the link 22 and this scale may be formed on a time chart 48 operated by clock mechanism as is usual in recording indicators. Ilhe coils of the synchronized magnetic fields are so wound and arranged that movement of the armature 32 will be accompanied by a corres onding movement of the armature 34 an consequently the position of the arms.- ture 34 and the indicating and recording finger 46 will depend upon the position of the armature 28 and therefore upon the pressure being transmitted through the spfling link 22 to the end of the pressure ro The indicating recorders may be located wherever found most convenient and if desired additional recorders ma be included in series in each circuit to in icate, for instance, in the superintendents oflice the pressures being applied by the rolls of the various machines in-the plant.

While it is preferred to employ subs'tantially the construction and arrangement shown and described it will be understood Ill , that this cmstmction and 1 the machine, means for app .to the moist web of stock hie not essential to the broader-W turesof the invention and: may be varied or modified as found desirable or best suited to the conditions under which the invention is to be utilized.

What is claimed is:

1. A paper making machine having, in combination a roll for applying ressure to the moist web of stock assing t ugh the machine, means for app ying an adjustable pressure to each end of the roll including a spring link through which the pressure is applied, and a ressure indicating mechamsm correspon ing to'each link operated by the distortion of the link.

2. A paper maki machine having, in combination, a roll or applying pressure to the moist web of stock pasing through the machine, a roll carrier at each end of the roll, a spring link connected to each carrier, means for transmitting an adjustable pressure to the carrier th, h the link, and a pressure indicat' mec anism operated by the distortion of t e link.

3. A paper making machine having, in

combination, a series of rolls for suoeessively applying of stock passing t rough the machine, means for applying an adjustable pressure to each end 0 each roll including a prils .link

through which the pressure is appl and a pressure indicating mechanism corresponding to each link operated by the distortion of the link.

. 4. A paper making machine having, in combination, a roll or applying pressure passing through the machine, means for app yi able pressure to each end of t e roll, and mechanism for indicating at a point remote from the pressure applying means the pressure apphed to the roll thereby.

5. A paper making machine having, in combination, a roll or applying prewure to the moist web of stock passing through ying an adjustable pressure to each end of the roll, include ing a spring link through which the pres .ated by the accompanyi pressure to the moist web an adjust- 6. A paper making machine having, in

combination, a series of rolls for successively applying ressure to the .moist web of stock passin t rough the machine, mechanism for ap ying an adjustable pressure to each end 0 each roll including a spnfig link through'which the premre s a two synchronized magnetic fields with armatures therein corresponding to each link, one field and armature being be relatively moved by distortion of the link,

connectedtO- and indicating devices connected to be operrelative movement of the other field an armature. f

7. A paper making machinehaving, in combination, a'roll or applying pressure to the moist web of stock assing through the-machine, means for app yi an adjustable pressure to each end of t e 'roll, and means for recording the pressure applied to each end of the roll during the operation i of the machine. v

. 8. A paper makin machine having, in

combination, a roll or applying presure to the moist web of stock the machine, means for a able pressure to each en 'of the. ro eluding a spring link through which the pressure is applied, and a pnesure recordmg mechanism cor operated by the distortion 0 the link.

9. A paper makingo combination, a roll r applying pressure to the moist web of stock ing through I the machine, means for a p yin an adjustable pressure to each en mechanism for recording at a point remote from the pressure appl ing means the pres-' of t e roll, and

sure applied by the re thereby.-

s E ZEKIEL J. WILSON.

respond to each link:

machine having, in'

ng through" ying an m.

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