US1249886A - Testing attachment for steam-heated drying-cylinders. - Google Patents

Description

G. H. BARRUS; TESTING ATTACHMENT FOR STEAM HEATED DRYING CYLINDERS. APPLICATION FILED SEPT. 30. 1915.

Patented Dee. H, 1917/.

2 SHEETS-SHEET I.-

G. H. BARRUS.

TESTING ATTACHMENT FUR STEAM HEATED DRYING CYLINDERS.

7 APPLICATION FILED SEPT- 30, 1915 Patented Dec. 11,1917.

UNITED STATES enema H. 12m ns, or BROOKLINE, MASSACHUSETTS. assienon 'ro INTERNATIONAL PATENT OFFICE.

PAPER COMPANY, A CORPORATION OF NEW YORK.

rnsrme Armour/rum 'ron STEAM-HEATED nnirme-c'rnmnens- To all whom it may concern:

Be it known that l[, GEORGE H. Barnes, a citizen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Testing Attachments for Steam-Heated Drying- Cylinders, of which the following is a specification, reference being-had therein to the accompanying drawing. f

In drying apparatus, designed-more particularly' for drying paper in the manufacture of the. same, hollow steam heated rotary cylinders are employed, around which the paper web passes, the heating steam being introduced, usually under pressure, through hollow journals on the cylinders. Such cylinders are usually equipped-with means for the discharge of the water of condensation collecting in the lower portion of the cylinder, since any considerable accumulation of the water therein will greatly impair the heating effect of the steam. It

is desirable there ore that means be provided to enable the at endant to ascertain if the water is being properly. discharged from the cylinder, or hascollected therein, and if so, to what extent. It has been proposed, in order to meet these conditions, to apply a try-cock to the head of the c linder near its outer edge, so "that by opening the cock and observing whether the issuing jet blows water or steam, and noting to what angular distance in the revolution of the cylinder the cock blows off water, if any, the amount of' water within the cylinder will be revealed.

Such an expedientis applicable only to slow running machines, or to those temporarily slowed down for thepurpose of applying the test,'but in any machine it is objection-' able for a number of reasons, mainl becausethe escaping water striking the rame of the machine, splashes down on the paper web 'nd felt andinter'feres with the'drying My invention aims "to'enablethe attendant to readily determine the conditions obtaining within the cylinder with respect to the discharge of the water or the degree of ac-Q cumulation therein, without the "objections above mentioned, and without the necessity of reducing the speed of operation, and the invention consists in combining. with the rotary cylinder, a test pipe, having a portion withilltheipylinder 'providedwith an inlet Specification 01 Letters Patent. Patented Dec, 11, 1917, Application filed September so, 1915. semi No. 53,458.

opening, and having a portion extendingjet issuing through the vent opening whether steam or water, and the position of the. pipe, will reveal to the attendant the conditions within the cylinder. i

In carrying my invention into effect in its preferred form, I propose to utilize a known form of siphon drain pipe employed to effeet the discharge of water from the cylinder, by so modifying its form. and inpunting that its functlon-as a be rendered inactive at will, andit may then be operated to act as a test pipe. Such a drain pipe comprises a longitudinal portion extending outside the cylinder and provided with a discharge opening, and a lateral'portion within the cylinder provided with an inlet opening, the pressure of steam on the surface of the water of co densation fore-- ing the. same up into theElateral portion of the pipe and causing its ischarge therethrough. To utilize such form of drainpipe in carrying my invention into effect, I provide 'the pipe with a valve controlled vent opening, I arran e means for shutting off the normal disc arge of the. water drain pipe may through the pipe, thereby renderin its disfixedly relatively to the rotary cylinder when it is acting as a drain pipe, it may be turnedat will about the axis of its lon 'tudinal portion to raise and lower the in at opening in;

the pipe within the cylinder. As a result inlet opening within the cylinder, the attendant can note at what point in the movefment of the pipe, the-jet issuing from the I vent opening begins to blow steam, and can thus determme'the height of the water level within the cylinder, and the (1118111173 of water therein. The determination o the water level may befacilitated by applying- 'to the-longitudinal portion of the pipe, out- I side the cylinder,-an indicating arm extendof this construction andarrangement of inner portion of the pipe within the cylining radially from the pipe in the same rela- -that the position of the arm relative to the head of the cylinder at the moment that the vent opening blows steam, will showaccurately the corresponding position of the lateral portion of the pipe within the cylinder, and consequently the water level may be readily determined.

In the accompanying drawings:

Figure 1 is a central longitudinal section through a drying cylinder having my invention embodied therein.

Fig. 2 is a longitudinal section on an enlarged scale of the drain pipe and sustaining parts removed from the cylinder, said pipe constructed in accordance with my invention.

Fig. 3 is an end elevation of the same.

Fig. 4 is a side elevation showing how the drainage pipe is mounted and operated.

Fig. 5 is a horizontal sectional view on the line aa of Fig. 4.

Referring to the drawings:

1 represents one ofa series of rotary hollow drying cylinders employed in paper making machines for drying thedamp'paper web, and around which'cylinders the web is adapted to pass as the cylinders are rotated. The cylinders are heated internally by the introduction of steam therein, in the present instance the cylinder being provided with a hollow journal projecting axiall from the head of the same and mounted in suitable bearings 3, the steam entering the cylinder through said journal. As shown in Fig. 1, the end of the journal abuts steam-tight against a casting or frame 4, which frame is formed with an internal chamber 5, to which a steam supply pipe 6 is connected. A collar 7 extends through the hollow journal and is screwed at its outer end into an opening in the frame, the interior of the collar communicating with the chamber 5 so that the steam entering the pipe 6 will flow through the collar 7. and enter the cylinder. 8 represents a drain pipe. for the discharge of such water of condensation as may collect in the lower portion of the cylinder. This pipe is formed with a longitudinal portion 8 extending centrally through the hollow journal 2 within the collar 7, through the chamber 5 in the frame' 4 and outwardly through a stufling box 9 at the end of the frame. The

der is bent laterally, and terminates at its end adjacent the inner surface of the cylinder, so that when the lateral end extends downwardly vertically within the cylinder, the inlet opening in its end will be in position to receive the water of condensation. Outward of the chamber 5, the frame 4 is provided with a chamber 10, through which the longitudinal portion of the drain pipe passes, and within this chamber the pipe is formed in its side with a discharge opening 11 through which the water of condensation from the cylinder is discharged and flows into a discharge pipe 12 connected with the chamber 10 and provided with a cut-ofl' valve 13 for the purpose presently to be described.

In the normal operation of the mechanism so far described, the pressure of the steam introduced by the steam supply pipe 6, acting on the surface of the water of condensation within the cylinder, will force. the same up into the entrance end of the drain pipe, and the Water flowing therethrough will issue through the discharge opening 11 and flow off through the discharge pipe 12, it being understood that the valve 13 remains open in this operation.

In accordance with my invention, the longitudina'l portion 8 of the drain pipe, is so mounted within the frame 4 and collar 7, that the pipe may be turned therein about its longitudinal axis, the result of which will be to raise and lower the inlet end of the laterally extending portion within the cylinder, the stufiing box 9 before alluded to, preventing the escape around the pipe, of water from chamber 10. The outer end of the longitudinal portion of the drain pipe beyond the frame 4 is open, and constitutes in effect a vent opening, which in the normal operation of the pipe as a drain pipe, is closed by a valve 14. The purpose of this vent opening is to indicate to the attendant the presence or absence of accumulated water within the cylinder, and whether or not the water is being properly discharged in the normal operation of the machine. These objects are effected in the following manner: When the attendant desires to be apprised of the conditions mentioned, he first closes the valve 13 in the discharge pipe 12, and then opens valve 14 of the vent opening of the drain pipe, and turns the longitudinal portion of the "pipe about'its axis, the effect of which will be to swing up the lateral end of the pipe within the cylinder and elevate the inlet opening If there is accumulated water within the cylinder, water will issue from the vent opening, and will continue to issue until, by the continued turning of the pipe, the inlet opening passes above the water level, whereupon steam will imue through the vent opening. Therefore by noting the point in the movement of the pipe at which the water ceases to flow and steam begins to flow, the attendant will be enabled to calculate the level of the water in the cylinder. a

In the normal operation of the apparatus. the drain pipe for draining purposes is held in fixed relation to the rotary cylinder, with its inner lateral end extending vertically downward as shown in Fig. 1, so that the inlet opening will be inthe lowest position to drain oil the water to the lowest level, the

5, the handle is within the cylinder.

pipe being held in 'this position by releasable lecking means, so that-the attendant, by vreleaslng these] locking means will be enabled at will, and whenever the test is to be Th made, to turn the pipe as described. In order that the pipe may be thus held, and may be conveniently turned when desired, and. in order that means may be afforded for indicating readily andwith accuracy, the level of the accumulated water, I fix to the exposed end of the longitudinal portionof the pipe, a handle 15 which projects radially therefrom, and which, by being applied theretoin the same angular relation as that of the lateral inner end of the pipe, will serve, in addition to an operating handle, as an indicating means for showing .on the outside,.the position of the end of the pipe particularly in Figs. 4' and releasably locked to the frame or casting 4, by means of a horizontal As shownmore plunger 17 extending loosely through an opening'in the handle and through a guiding so that by withopening 18 in the frame,

' drawing the plunger outwardly from its lbeen actuated to release the when the plunger guiding opening to disengage the same from the frame, the handlewill be free to be moved to turn the drain pipe, and so that is seated Within its guidlng opening and engaged with the frame, the handle will be locked, therelation of the parts being such that when the handle is locked, the inner lateral end of the pipe will extend vertically downward Within the cylinder as shown in Fig. 1. The plunger is provided near its inner end with an annular groove 17*, and is releasably locked within its guiding opemng in engagement with the frame to hold the handlelocked, by means of a horizontal'locking pin 19 mounted to slide loosely in a horizontal opening in the frame 4, in such relation to the annular groove in the plunger, that when the latteris seated to its full extent in its guiding opening,-th e end of the pin will-enter the annular groove, and will lock the plunger in.

place. The pin is acted on by a leaf spring 21 fixed at one end vto the frame 4:, andslotted at its opposite end to embrace the pin, the said spring bearing on a shoulder 22 on the pin andacting to hold the pin yieldingly inward as shown in Fig. 5. The pin is provided with a knurled head 22 for withdrawing it to disengage its inner end from. the plunger, and the plunger is providedon its end. with a knurled head 23 by 1 which it may be withdrawn endwiseto release the handle after the locking pin has plu'ngerJ In the operation of the drain pipe for making the tests mentioned, the valve of the disf charge, pipe 12 being closed, and the vent "tending portion within t e "valve 14 of the drain pipe opened, the

handle 15 is and is turned left, until the flow of water in eachposition ceases, and the escaping jet changes to steam.

ese -two points mark the angular posireleased as before described,

to the right, and then to the tions of the entrance end of the pipe within the cylinder'when said entrance end is at the water level, and thereby the location of'thelevel of the wateris established, and consequently the drain pipe, neither water no steam issues through the vent opening, it indicates a stoppage in the pipe, and inasmuch as the pipe extends'straight longitudinally from its lateral inner end, a duced through thevent-opening and pushed through the pipe,

the pipe is permittedand facilitated by the construction of the valve ll, which as shownin Fig. 4 is provided with a straightway' va'lvepassage 14:; valve is turned to straight continuation of the passage through the pipe. As a result, the wire may be readilyentered into and pushed through the its depth. Ifin this oper tion of fine wire may be introand the obstruction rexmoved, The introduction ofithe wire into this passage, when-the open position, forming a.

valve and pipe without liability of being obv structed by the valve.

ln the foregoing description and accompanying drawings, I have set forth my invention in the particular form and embodimentwhich l'prefer to adopt, and which in practice has been found to answer to a satisfactory degree the ends to be attained. It will be manifest, however, to the skilled mechanic, that the invention is not limited to this form of embodiment, and that various changes in the detailed construction-of the" same may be made without departing from the limits of my inventlon provided the operation will be substantially as above 1nd1- cated. Further it will be understood that the invention is not limited to any particular so disposed 2. In combination with a rotary cylinder having means for the introduction. 0 steam therein, a test pipe havin a laterally excylinder provided with an inlet opening, and having a longitudinal portion extending outside of the cylinder and provided with a vent openlld lllh

and a valve ing, so disposed that thejet issuin there from will be exposed to view, a va ve controlling the vent opening, and an indicating member fixed to the longitudinal portion of the pipe in the same angular relation thereto as that of the laterally extending portion, said longitudinal portion of the pipe being rotatable about its axis to vary, the height of the inlet opening Within the cylinder.

3. In combination with a rotary cylinder having means for the introduction of steam therein, a normally fixed pipe for the discharge of the water of condensation therefrom, and means for rendering the discharging function of" the pipe inactive at will, said pipe being movable from its nor- .mal position while its discharging function is inactive and being provided with a vent. opening so disposed that the fluid issuing therefromwill be exposed to view.

4:. In combination with a rotary cylinder provided with means for the introduction of steam therein, anormally fixed drain pipe entering the cylinder and through which the water of. condensation is normally discharged, said pipe being provided with a valve-controlled vent opening so disposed that the jet issuing therefrom will be exposed to view, and said pipe being movable at will from its normal position to cause the discharge through the vent opening.

5. In combination with a rotary cylinder I provided with means for the introduction of steam therein, a normally fixed drain pipe entering the cylinder and through which the water of condensation is normally discharged, said pipe being provided with a valve-controlled vent opening so disposed that the jet issuing therefrom will be exposed to view, and said pipe being movable t at will from its normal discharging position for test purposes.

6. In combination with a rotary cylinder having means for the introduction of steam therein, a test ,pipe having a laterally ex tending portion within the cylinder provided with an inlet opening, and having a portion outside the cylinder provided With a vent opening so disposed that the jet issuing therefrom. will be exposed to view, a valve controlling said vent opening,and a handle applied to the exposed portion of the pipe for turning the same to vary the height of the inlet opening within the cylinder.

7. In combination with a rotary e linder having means for the introduction 0 steam therein, a-test pipe having a laterally extending portion within the cylinder provided with an inlet opening, and having a portion extending outside the cylinder provided with a vent opening so disposed that the jet issuing therefrom will be exposed to view, a valve controlling said vent opening, a'handle on the exposed portion of the pipe for turning it to vary the height of the inlet opening within the cylinder, and releasable means for locking said handle to hold the pipe normally fixed relatively to the cylin- 8. In combination with a rotary cylinder having means for the introduction of steam therein, a normally fixed drain pipe extending into the cylinder and having an inlet opening, said pipe being movable at will to vary. the height of the inlet opening, and being provided with a normally closed vent opening for test purposes so disposed that the fluid issuing therefrom will be exposed to view.

9. In combination with a rotary cylinder provided with means for the introduction of steam therein, a drain pipe having a longitudinally extending outer portion situated outside the cylinder and open at its outer end, and having a laterally extending inner portion with an inlet'opening within the cylinder, and having in its longitudinal portion a lateral opening for the normal discharge of the water, a valve closing the outer end of the pipe, means for shutting off the normal discharge of the water through the discharge opening, and means for turning thepipe at will about the axis of its longitudinal portion to vary the height of the inlet opening.

In testimony whereof, I have afiixed my signature.

GEORGE H; BARRUS.

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