US1533130A - Paper-machine drier - Google Patents

Description

April 14, 1925. 1,533,130.

W. H. MILLSPAUGH PAPER MACHINE DRIER Filed Dec. '7, 1922 2 Sheets-Sheet 1 April 14, 1925., 1,533,130

W. H. MILLSPAUGH PAPER MACHINE DRIER Filed Dec. 7, 1922 r 2 Sheets-Sheet 2 Patented Apr. 14, 1925.

UNITED, STATES PATENT OFFICE.

WILLIAM H. MIL LSIAUGH, OF SANDUSKY, OHIO, ASSIGNOR TO THE PAPER AND 'rnx,

TILE MACHINERY 00., OF S A NDUSKY, OHIO, aconromrron OF OHIO.

gaunt-MACHINE DRIER.

Application filed December 7, 1922. Serial No.'605,379.

To all whom it may concern:

.Be itknown that I, WILLIAM H. MILLS- PAUGH, a citizen of the United States, and

av resident of Sandusky, in the county of.

Erie and Stateof Ohio, have invented cer-' tain new and useful Improvements in of which the foltrain of intermeshing gears, each cylinder being equipped with a gear driven from a gear on another cylinder.

The present invention is intended to dispense with this elaborate and expensive gear drive. Accordingly, the drying c linders are journalled on anti-friction rol er bearings of a type which enables the cylinders to be rotated easily under application of comparatively light power, and the cylinders are driven by endless means entrained on or contacting with the cylinders; for example the felts which carry the sheet of paper in contact with the drying cylinders may be utilized as belts for driving the cylinders. It is therefore only necessary to provide a power applying means for driving the felts or other endless means contacting with the cylinders; which powerapplying means may be conveniently applied to the first, last or-any desired cylinder engaged by such felt or endless means.

In the annexed drawings:

Fig. 1 is a diagrammatic side view of one illustrative form of dryingapparatus embodying the present invention;

Fig. 2 is a plan View of the receiving end of said drying apparatus, illustrating one m ans of applying power to drive the felts which in turn drive the drying cylinders;

Fig, 3 is a plan view of the delivery end of a similar drying a paratu's, but illustrating an alternative ethod of applying power, in this instance to the last cylinder of the series;

' Fig. 4 is a side view of the delivery end of similar equipment, illustrating another means of power application;

Fig. 5 is a sectional view of a cylinder journal bearing;

.Fig. 6 is a detail cross section of the-antifriction bearings for a journal supporting roller; and

Fig. 7 is a detail view showing a shaft support for the journal supporting roller.

The illustrative ap aratus is of a con- .ventional type, comprising in this instance two tiers of drying cylinders 1, 2, etc., those of the uppertier rotatin in one direction-,-

- cylinder 2, then under and around the lower half of the next cylinder 3, and so on; the dried sheet being delivered from the last cylinder of the series overthe guide-roller 16. The drying cylinders are designated respectively y the numerals 1 to 13 inclusive. Viewing the il strative apparatus in Fig. 1, the cylinders of the upper tier rotate in a clockwise direction and those of the lower tier in a counter-clockwise direction.

Endless felts 17 and 18 are shown trained in engagement with the respective tiers of drying cylinders to carry the paper sheet in contact with the cylinders in the manner stated; the upper felt 17 being trained over or in contact withthe upper parts of the cylindersof the top tier or row, and the lower felt, 18, being trained under or in contact with the lower parts of the cylinders of the bottom tier or row, in a wellknown manner. Guide-rollers forholding HEISSUED' the felts to the cylinders are indicated at 19.

Each felt is provided with a suitable system of guiding and tensioning rollers 20, engaging the return run of the felt, including one or more adjustable take-up or tightening rollers 21.

In order toelirninate the usual e uipment of intermeshing gears for driving t e cylinders, whichgears are omitted from the illustrative apparatus, it is necessary to mount the journals 22 of the drying cylinders on bearings of such anti-friction quality as to permit the cylinders to be readily rotated y frictional engagement with an endless contacting medium, such for instance as'the felts 17 and 18 when starting up the machine, or by the paper sheet held in contact with the cylinders byv the felts after the I machine is in'operation.

A type of bearing adapted for this purpose is illustrated in Figs. 5 to 7 of the drawings, showing a construction designed by the present inventor for the special duty of supporting drying cylinder journals, and which not only possesses extreme anti-friction qualities,'but is otherwise very practicable and reliable for the object in 'view. The specificconstruction of bearing shown may be briefly described as follows:

The-cylinder 'ournal 22 enters a journal box 23, shown aving its upper part constructed as a removable cap 24 secured to the body of the box by stud bolts 25. A filler 26 of Babbitt metal-or the like'may be provided in the cap to bear on the top of the journal. The journal box, which is mounted on the rail 27 of the machine frame, may be slightly rounded on its bottom and maybe provided with a central hole 28 at its base to pivotally engage a stud on the supporting rail, in order that the box may be self-adjusting .toalign with the journal.

Within the journal box, the journal 22 bears on a pair of rollers, 29 and 30, which are mounted by means of anti-friction bearings on fixed shafts 31; the anti-friction bearings being enclosed within the rollers, as shown more clearly in Fi 6. Said antifric-tion bearings, two of w ich are shown in Fig. 6, comprise concentric race rings 32 and 33 of hardened steel, and interposed hardened steel balls or rollers 34. In the specific construction shown, the outer race rings of-the two bearings are separated by a spacing sleeve 35;one of the annular ball bearing devices being fitted in the end of the bore in the journal sugpaorting roller 30 and a removable cap 36 ing secured by screws in a countersunk recess at the other end of saidroller 30, whereby the parts are -maintained correctly in desired relation-' though of course it will be understood that other means for this function may be emv be applied to the-last cylinder of the series 130 ployed. The shaft 31 may be longitudinally and transversely grooved for supplying oil 'or lubricant to the anti-friction bearings encased in the journal supporting rollers, oneof the screw plugs 39 associated with each shaft being desirably bored to permit introduction of the stem of a lubricant fill-, ing device (not shown).i

With this construction, the cylinder journal 22 bears on comparatively large rollers, which in turn are freely revoluble on annular series of rolling elements revolving about fixed shafts so that theheavy drying cylinder thus'supported maybe turned with expenditure of very little power. Aside from this anti-friction property in the bearing, the bearing is particularly adapted for the purpose "in view, because it is one which will.

not tend to bind the journals under expan sion caused by heat changes, it being understood that the journals of drying cylinders are subject to such temperature changes by the introduction of the steam or other heating medium through the hollow journals into the cylinders. With the illustrative bearing, expansion of the journal will merely raise its center, without affecting the antifriction capacity of the bearing; and furthermore the construction is such that the annular ball bearing devices areremoved from contact with the heated journals.

It will furthermore be observed that by mounting the journal-supporting rollers on stationary shafts, with the ball. bearing d'e-" vices-enclosed within the rollers, as shown for example in the illustrativeconstruction, such short shaftsmay be emplo 'ed as to reduce shaft flexing under the oad ,t'o'aminimum; and such flexing as may occur will be substantially immaterial, sinceit has no other effect than the mere bending of a ion stationary \shaft and consequently no -tendency to set up' crystallization as would accompany the flexing of a rotating loadsustaining shaft.

The dryin cylinders of the paper machine being t us journalled on self-aligning, non-binding, extremely anti-friction journal bearings, the cylinders, notwithstanding their weight may readily be set in motion frictional engagement of the drier felts and'18, in starting the machine, and by papersheet with the engagement of the rm hold of the felts cylinders under the after the machine is in dperation.

It is'accordin l only necessar to a l powerto run t e felt's,'which'1 i1 this in stance serve .the function of drivin belts. For this purpose the journals of t e first two drying cylinders 1 and 2 are shown provided with intermesliing gears 40 and 41, the gear 40 on the journal. of cylinder 1 being driven by a pinionor gear 42 on a shaft 43,-

as clearly appears from ,Fig. 2. It-will be understood, however, that the power may izo - sheet of paper is successively passed; said or to any cylinder in engagement with the felt to be driven. It will also be understood that drying equipment may be supplied comprising only one tier of drying cylinders or two, three or more tiers, and the power application means should accordingly be modified to suit the circumstances; for instance if there were three or more tiers of cylinders, the cylinders of such tiers adjacent the cylinder 2 of 'the illustrative machine would likewise be provided with gears for transmitting power to thefelts supplied with the extra tiers.

Fig. 3 shows an alternative power applying means in which the journals at one end of the cylinders 12 and 13, being in this instance the last cylinders of the group, are in the form of extended shafts and equipped with pulleys 44 and 45 for driving these cylinders by belts.

Fig, 4 represents an arrangement in which the cylinder 12 is driven from the cylinder 13 by a crossed belt 46 engaging pulleys 47 and 48; the cylinder 13 being provided with-a pulley 49 to which power is applied by the belt 50.

Among other advantages the present invention avoids a positive gear drive of the cylinders at a peripheral speed differing from the speed of the aper and felts, which of course more or ess fluctuates in the transitthrough the machine due to changes in moisture conditions. This will be readily appreciated by those familiar with the art.

Obviously the present invention is not limited to the specific details of construction and arrangement shown and described, which may be variously modified to Suit different requirements and conditions; nor is it essential that all the features of the invention be used conjointly since they 'may be advantageously used in various different combinations and subcombinations.

Having thus described my invention, what I claim is:

1. In a paper drying apparatus, a rota table drying cylinder unprovided with a driving gear; and non-binding anti-friction bearings for the cylinder journals whereby the cylinder may be easily rotated with light application of power by the passage of a contacting medium.

2. An apparatus of. the class described comprising, in combination, a plurality of drying cylinders in contact with which a cylinders being unprovided with driving gears; anti-friction journal bearings for said cylinders; the construction and arrangement being such as to permit said cylinders to be rotated by endless means in frictional contact with the cylinders.

3. A machine of the class described, comprising in combination, a plurality of drying cylinders; anti-friction cylinder journal bearings; endless means frictionally engaging a plurality of said cylinders; a cylinder engaged by said means being provided with power applying means; the remaining cylinders engaged by said endless means being driven by the said endless means.

4. An apparatus of 1 the class described, comprising anti-frictionally supported and freely rotatable drying cylinders and endless driving means for a plurality of such cylinders,.operating by friction, there being no other power applying means associate with such plurality of cylinders.

5. In a'paper drying apparatus, a rotatable drying cylinder vunprovided with a driving gear; non-binding cylinder bearings comprising comparatively large journal supporting rollers; and anti-friction bearingson which said rollers are mounted; whereby the cylinder may beeasily rotated with light application of power by the passage of a contacting medium.

6. In-a paper drying apparatus, a gearless antifrictionally journalled dry-ing cylinder driven by'the passage of a medium in contact with the cylinder surface.

7. In a paper drying apparatus, an antifrictionall (iournalled drying means trame about the cylinder for carrycylinder;

ing the paper sheet in contact therewith;

sald cylinder being free of connection with driving mechanism other than through said means. i p

8. An apparatus of the class described comprising, in combination, a power-driven drying cylinder and a plurality ofungearedanti-frictionally journalled cylinders driven from said first mentioned cylinder by a medium traveling in contact with said cylinders. i

9. An apparatus of the class described comprising a set of drying cylinders entrained by the sheet passing through the apparatus, including a plurality of ungeared anti-frictionally journalled cyl nders and a driving cylinder connected wlth power-applying means.

10. An apparatus of the class described 7 comprising a set of anti-frictionally jour-' nalled drying cylinders, entrained by the drying cylinders; endless means vfriction- J ally engaging said Cylinders; driving means rying means cooperating therewith; means connected with and driving certain of said cylinders; said sheet-carrying means being driven thereby and serving as driving means for a plurality of said cylinders; said plun'a'lit-y of cylinders being free'of driving or other connections except through said sheet carrying means. I

15. An -apparatus of the class described comprising, in combination, a plurality of anti-frictionally journalled drying cylinders; an endless felt for. carrying a sheet of paper successively in contact therewith; one of said plurality of cylinders provided with power-applyin means for driving saidc linder; the other cylinders of said pl'urality being driven by said felt.

16. An apparatus of the class described "comprising, in combination, .drying cylinders arranged in tiers; each tier including a power-connected driving cylinder and a plurality of ungeared anti friction'ally journalled driven cylinders; and endless means frictionally engaging the cylinders of each tier, whereby said ungeared cylinders-are name to. this specification.

driven from the driving cylinder of such tier.

17. An apparatus of the classdescribed comprisin a series-of drying cylinders in contact withwhich the paper sheet is su.c-'

without connections therewith other than through the means employed for passing the sheet in contact with the cylinders.

18. An apparatus of the class described comprising, in combination, power-applyingmeans; and a plurality of anti-frictiom' ally jo'urnalled drying cylinders driven from said power-applying means through the passage'of a medium traveling in con- *tact with said cylinders.

19. An apparatus of the class described comprising, in combination, a plurality of antifrictionally journalled drying cylinders; endless means operating by friction for driving said cylinders; and means'for operating said endless means.

v 20. The combination with drying "cylinders of meansfor driving certain only of the same, and a traveling belt associated =with said'cylinders and driving those not connected with said driving mechanism.

21. The combination with the drying cylinders of drive shafting provided with gearing for driving certain only of said cylinders and a traveling belt traveling over and around said drying cylinders and driving those not connected with said power shafting.

22. The combination of drying cylinders and a traveling felt driving said cylinders. In testimony whereof, I have signed my WILLIAM H. MILLSRAUGH.

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