US2132874A - Apparatus for making up batches of paper stock - Google Patents

Description

Oct. '11, 1938. c. w. MORDEN 2,132,374

APPARATUS FOR MAKING UP BATCHES OF PAPER STOCK I Filed June 18, 1935 3 Sheets-Sheet 1 'llllll Oct. 11, 1938. c. w. MORDEN 2,132,874

APPARATUS FOR MAKING UP BATCHES OF PAPER STOCK Filed June 18, 1935 3 Sheets-Sheet 2 I I E 7 s d s I 63 A v :zwur/fizrr Char/Ar 14 Mo r'den Oct. 11, 1938. c. w. MORDEN 2,132,874 APPARATUS FOR MAKING UP BATCHES OF PAPER STOCK Filed June 18, 1935 3 Sheets-Sheet 3 Inca/778w [bar/4r I/l/ar/m Patented Oct. 11, 1938 UNITED TATE-s PATENTDFFIQE APPARATUS a on, MAKING UP BATGHES F PAPER. s'rocK Charles W, MOI-dell; .PIor tlandLOregQ Application June 18, 1935, Serial No.-'27,'225" .12 Claims.

posed of relatively proportioned amounts of ingredients; further causing the delivery of the resulting batches successively -into a receiving receptacle; and finally causing the discharge "from the latter in a continuous, constant flow into a stufi chest, =or'other part of a paper making system; thecooperative action of said devices being arranged so that therate of delivery from the batch make-up element of my device into said receiving receptacle is greater than that of the rate of'the-discharge from the latter.

A further object of my inventionfis to provide simple efficient means 'for feeding' into and automatically p-roportioning the desiredingredients in the primaryreceptacle of mygapparatusi and to proportion relatively the difierent' types=of pulp -in such primary receptacle. r

A further object-of my invention is to provide an apparatus for the purpose mentioned adapted to be combined with'the usual beate'r tub of the 30 paper mill so that a part of the pulp can be automatically supplied from said beater tub.

-A further "object of my invention is to provide automatic means for delivering -coloring' m'atter, size, clay and other-desired ingredients -'in pre- 35 determined quantities automatically into each batch of paper stock produced.

A further object of "my invention -isf to'causethe delivery of different typeset pulp intothe primary receptacle or make-up element-of my 7 4O apparatus to be effected by the level of theco'n tents in said primary receptacle, -so'=that"the"fee'd into the latter will stop inresponse to a predetermined rise in the level of the contents of said primary receptacle.

a control for the transfer of material from .said make-up receptacle to said receiving-receptacle operable by means -of a float .in said receiving receptacle, said float operating said-control in 5,0 response to the riseand -fal1-of=said float to predetermined levels attained by the material in said receiving receptacle, thus interrupting delivery from the make-up receptacle into the receiving receptacle when the latter is filled to a pre- 55 determined high level, and permitting-dumber j "Inthe drawings:

A further object of my invention is to provide filling ofthe receiving receptacle when emptied to a predetermined low level; during the continuous discharge therefrom, the discharge being at :a lesser *rate'than the rate of transfer of material from the batch make-up receptacle to *5 the receiving receptacle.

A'further object of invention isto provide a-control for the discharge from the receiving receptacle of my apparatus 'into the paper making system, whereby a ,steady and substantially 1'0 continuous, constant rate of flow from the receiving :receptacle is maintained, and to effect such result by providing an outlet carried 'by said float by which the said outlet is thus at all times located -a constant depth below the 1-5 levelof the contents of "the receiving receptacle, thus-causing said flow to he -discharged from the receiving receptacle at constant pressure.

' A Ffurthei"object'ofmyfinvention isto provide means whereby the volume discharged from said cutlet-of the receiving receptacle may be definitely varied by a gate controlling said outlet. iistilliurtherobject of my inventionis to provid'ea'sin ple .device readily maintained in order 7 anid'comprising elements cooperatively combined ior carrying my said method and the various 'stepsthereof into practice, controlling the operation of'n y apparatus as a whole by said control of the discharge from the receiving receptacle element of my apparatus.

"Thea-hove 'enumerated objects and incidental features or my'inven'tion I attain 'byth'e method and, apparatus hereinafter fully described with reference to the accompanying drawings, and hereinafter claimed.

Figj l'is a .partial top or plan view, partly diagrammatic, of my apparatus .Fig. 2 is a vertical section on the line 2-2 of Fig. llookingin the direction indicated by the 40 arrows, apart of my apparatus in Fig. 2 being shown diagrammatically; 1 :Fig. .3"is faffragmentary View of'part of my ei para tus taken on'the line ;3-"3 oi'Fig. 1, looking in the direction indicated by the arrows;

Fig. iris-a fragmentary ,vertical section on the line "4"4'*of 1 r Fig. 5 'isafsimilar section on the line"'55 of Fig-6 is -asectional-view, on a' larger'sca'le, of

the dipper element shown on -the left in Fig. 4, but with the dipper in the lowered position Fig. 7 -is-a vertical section, "on still larger scale, taken on thelinefllcf Fig. -6;

(Figs. 18 andi9 are :views liniperspective :of parts of the" dipper element shown in Figs. 4, 6 and 7;

Fig. 10 shows, in vertical section, an optional construction for my primary receptacle;

Fig. 11 is a plan View looking down from the line ll-Il of Fig. 10; V

Fig. 12 is a horizontal section on the line I21-l2 of Fig. 10; and

Fig. 13 is a fragmentary view illustrating the possibility of substituting compressed air means for electrical means in theoperation of certain parts of my device.

Referring to Figs. 1 and 2, 11 indicates a com:-

mon type of beater tub. Connected to the beaten adjacent my feederbox d is cut away as at a2 and a screen a3 is secured on the inner face of the, Wall a by guides a4 and so arranged that it may be. slipped into position or removed when desired. Thisscreen a3 may be made of Wire mesh, .or may consist of aperforated metal plate. The flow of stock from beater tub a into the feeder .box it is controlled by a manually operated .gate g'and by an automatic shutter 9' (see Fig.

5) ,the operation of which will be described later. When the level of the stock in the feeder box d attains the same elevation as that of the stock in the beater tub a, or when the gate a or shutter g is closed, the rotation of the pulp in the beater tubapast the inner face of the screen 123 will tend to dislodge an particles of pulp which may have .become attached to the screen during the passage of the pulp into the feeder box, due to. the fact that flow thru the screen ceases. Thus the innerface of the screen is automatically kept clear.

w The two stuff boxes e and e2 are connected with the feeder box at by manually operated gates 92 and 93, respectively, and by automatic valves 94 and 95, respectively, (see- Figs. 4 and 5). The

stock or other materials or ingredientsto be intermixed are delivered'to the stuff boxes 6" and e2 from sources of supply thru pipes e3 and e4 connected with the bottom of the stuff boxes. Any over-flow from the stuff box e passes intothe box' j over the partition f3 which is understood to be slightly lower'than-the other three walls of the stuff box e; and similarly the overflow from stuff box e2 takes place over the partition f4 into the box f2. The pipeji connects the bottom of box 1" with the source supplying stuff box e; and a similar pipe f6 connects the bottom of box -f2 with the source supplying stuff box .e2, thus returning the over-flow to said source. I Y I The partition d3 is made movable, being supported in one of the pairs of guideways (15, and thus may" be arranged so as to determine the relative amounts of pulp the compartments d and d2 of the feeder box d shall contain.

r 'A hopper 'h is located beneath the feeder box d andis connected with the feeder box by the circular openings h and 71.2 located in the bottom of the compartments d and d2. respectively. A V

pipe 215 connectsthe hopper h with a pulp treating unit 7, which is constructed and operates in the manner described in my PatentNo. 1,915,862, issued June 2'7, 193,3. Check valves b3 and M divide the hopper h into chambers :hB and 72.?

Stuff boxes e and e2 empty into the two and prevent any backflow from the pipe M or from one chamber into the other. The openings h and M are controlled by the manually operated valves d6 and d1, respectively. Since the two compartments d and d2 of the feeder box 01 may be of different size and thus contain different volumes of material, and also since the two kinds of material contained in these two compartments may have different flow characteristics it may be feeder box d in order to furnish a predetermined quantity of color, size, clay solution, alum, or other ingredients for each batch of stock which is being mixed. This metering unit consists of a tank It .(see Figs. 3, 4 and 6), in which the color or other ingredient is contained, and a dipper k2 rigidly attached to a shaft 703. The tank It is supplied by a pipe M3 (Fig. 4) and is also provided with an overflow pipe M4 to return surplus material to the source. The dipper k2 consists of a hollow cylindrical vessel lclfl, as shown in Fig. 9, one side wall 701 of which is provided with a slot or opening M. The other side wall kH is made with a centrally located external projecting stub axle kIZ (see Fig. 7) extending through a central hole M5 in the circular plate Iclfi, and to have a crank or handle kl! rigidly attached at its end. The circular plate 7cl6 has notches M8 at the top (Fig. 8) and the handle kl! is provided with a latch ki l for engaging the notches M8. The circular plate MB is made integral with a spout kill as shown in Fig. 8, and the sides of the spout are made with recesses k2!) to accommodate and fit over the flanges k2 I on the walls of the cylindrical Vessel lclO. 'Thus movement of the handle kll causes the cylindrical vessel kit to turn with respect to the circularplate kl 6 and trough kl 9, and

the latch I024 engaging the notches I018 holds the I said vessel in the desired relative position. The

a position of the outlet lip 7028 of the cylindrical vessel kill with respect to the trough M9 deterthe vessel kill and forms the connection between the vessel and the trough bottom. The sides of the trough k|9 are made with ears 7023 thru which bolts are inserted firmly attaching the trough and dipper to. the shaft k3.

As shown by Figs. 3 and 7, on one end of the shaft k3 is rigidly mounted a gear segment k5 engaging a similar gear segment kfi pivoted at 109. Anelectrically operated thrustor unit 7e25, pivotly mounted on a supporting bracket, is connected to the gear segment I06, and this thrustor when energized causes the gear segment R6 and with it the gear segment 105 to rotate and consequently to cause the dipperrkz to be lifted into discharging position with each upward thrust of the electrical thrustor unit R25. When the latter is deenergized the weight of the dipper will cause it todrop back into the tank is.

- Onthe end of the shaft 103 is rigidlymounted asprocket wheel 7026, connected by sprocket chain k2! to a similar sprocket wheel g6, the latter being rigidly, mounted on the end of shaft 91 operating the-valves g4 and 5. The valves g4 and 95 are curved plates attached to end walls which constians-2,1174

tute circular sectors and which are rigidly mounte ed on :the shaft g7. The valves 94 and :.g5 :move within pairs of walls 98 bracketed on the wall of the feeder box .dwithin the stufl boxes'e' and 2. A t theother end. of the shaft .g'l ismolmted a crank arm 99 which .iszconnected by .a'link glfl to the shutter g. Thus the ,raising of the ldipper k2 by the energizingof 'the :thrustor 792.5 will :also cause the valves .95 and g5 and theshutter g. to close. a 7 My pulp treating unit iincludesa frustro=coni-. cal rotor in a similar shaped shell-and .a pump runner which produces a pumping action. V

The pipe 7" leads fromathetreating unit 7' to the electrically operated valve 7'2 andthencezto the stock flow controller q. The valve 7'2 is operated by an electrical thruster '3 pivotly mounted on bracket 1'4. The stock flow. controller .q com-e prises a tank m in which isa float m which car- Iies a tube ml, the lower rendiof which projects thru'the packing m3 atthe bottom ofcthe'tank' ,m, and the upper end of which projects thru the top of the tank'and thus slides up and down as the float m rises and falls. The tube-m2 has anopening m4, which constitutes the outlet from the tank m and such opening is controlled by a cylindrical gate m5 having a M-shaped recess at its o r nd; The ate m5 attac ed-maximizinually adjustable bya rod m6, slidably mounted in the top of the tube m2 and movable up and down by means of a hand wheel m'l threaded on it. A pair of collars m8 and m9 are fastened :by set screws on the tube m2 and adapted to enga e an end of the bar of the electrictr-ip switch Q.

The electric trip switch oucomprises the-bar 0' pivotedin brackets 02, a contact finger-o3, a compression spring .04, and a bumper 05. The switch 0 connects a source ct-electrical energy p with th ro nd wire p. the other aroun contact being shown at 122. Within the circuit 1p are the electrical thrustors M and 713. mlflis a vent pipe in the'to p of the tank m. The rise and fall of the level of the liquid in the tank m cause the float m and therewith the tube m2 temove; upand down.- When ;the. ;fioat .m rises the lower collarmB by engaging the end of the :bar 0., will cause the switch 0 to be opened. "SiImla-rly, the dropping of the float m :and-tubem2 willcause the upper collar to'engageithe end of the bar 0' and cause the switch 0- to close, as shown in Fig. 2. The closingof switcho causes the electrical thrusto-r k25to-lift the dipper R2 to its discharge position andgtoielose valvesgland g5 and shutter g, and simultaneously causes the electric thrustor iii to open valvej-L permitting the stock to be pumped intothe tank mfrom-rthe treating unit 7'.; V j

The operation of my device is as follows:- The stock to be mixed is permitted to enter. from the beater tub a or from the stuif'boxe' intothe compartmentd' offthefeeder box; d, and the other stock or other ingredient tozbe mixedwith the composite batch of paper stock is permitted to enter the compartment d2 from the stuir boii e2 the relative amounts entering the vfeeder .1002; (1 being determined by the relative-capacities of the compartments dand (12. The amount of coloring matter or other materials to lie-added to the paper stockthru the metering unit is determined bythe position of {the cylindrical ves sel lg! fl t-controlled by *the handle [cf-1,. i The regulating valves d5 and which :are provided :to regulate the flow from the compartments d'- and dZ-of the feeder box 0;, permit the contents of the feedelr box to. pass :into the "hopper th, thru.

the" check-waives 11:3 and andithence thru the pipe 71.5; torithe heaterunit a. When the circuit of the electric thrustor 1 3 is closed the valve '2 is openedand the mixture from the beater unit aiisideliveredainto .thetank m. When the opening of the :outlet ml of the discharge tube m2 of the tank has been manually adjusted by the gate ms, the composite mixture-of paper stock flows at .a uniform predetermined .rateinto the stock flow .line of the paper making system. When the paper stockin the tank m rises to a predetermined high level .thus elevating the float .m' and therewith the tube m2 and the collar m8, the trip switch .owill be opened by engagement'with said collar .m8Qopening the circuit p, \de-energizing the 'electriclthrustor. 3, .causingit to drop because ofrits own weight and thereby causing the valve 0 2 to'close, Furtherstock is then prevented from passing into the tank .111. until the level of the stock in the tank m has been lowered to a predetermined'low. With the opening of the .switch .0, theedipper k will drop back .intothe tank preparatoryto metering another idipper load of coloring material or other ingredients to be mixed with 115138 stock 'in thesfeede'r .box id. When the float m. is lowered sufliciently bythe fall in the level of the stock :in the tank m the closing of trip .switchto will cause the dipper k to be raised and pour its contents into-the batch in the feeder box d, and simultaneously the valve '2 will be opened and again .allow stock to be delivered to thetankm. During all this process a continuous flow ofrthe mixedstock. from the tank m thru the .outletml is maintained, and due to the fact that the outlet-m4 in the tube m2 .carried bythe float m is alwaysmaintained at the same depth below the level of the stock in the tank 111., there will be a constant head in the tank :m above the outlet m4. and a flow at a constant rateiirom said outlet m4 into the stock chestr,

In place of .the electric circuit p, with switch 0, andaelectric thrustors k25,and 7'3,,.o-ther means, for example a system of pompressed air units, may be substituted. Such means is illustrated in 13, in which 51 indicates a pipe conveying air under pressure from anysuitable source, and s2 is a valve-qperated by-the arm 53, so that when arm s3 is in the lowered position-shown in Fig. 13, the compressed air will ,pass from pipe 81 into pipe $4, the vent s5 being closed, but when the arm s3 is in raised position, the compressed air will be prevented from passing out of pipe s! and the vent s5 be opened. 86 is a compressed air cylinder operating the valve 72 controlling -the flow of stock thru the pipe 7" (see Big/ 2). The compressed air' entering cylinder 'sB causes thexrod s] to be moved upward, opening the valve 7'2. A branch-pipe s!) joining pipe slconnects with a cylinder similar to-sG, but not shown; substitutedin place of thezelectric thrustor k25. As indicated in Fig. 13,-the arm s3 is en.- gaged by-the-collars m8 and m9 on the tube m2 carried. by the float m in thetank m; the lowering -of -the level in the tank mcausing the collar mlto move the arm .s3..to the lowered position already described.

When the level in tank m rises sufficiently, the collar m8 will move the arm =s3 tOIfliSBd position, shutting off the air from pipe sl and opening the vent $5. The weight s8 will cause cylinder st to close-and therewith the Valve 9'2.

In Figs 10, 11 and 12 I show an optional modified form of primary receptacle for my device, and differently arranged means for delivering the desired pulp into. such primary receptacle. In this v modified form the primary receptacle t is circuiar in shape with a centrally located circular outlet t.'A tube t2, rigidly attached to and t3 by means of spiders i4, is adapted to, have its bottom end fit into said outlet 12', thus shuttingoff the outlet from the primary receptacle t, and preventing intermixing of the pulps in the radially partitioned sections of the primary receptacle, but permitting entrance to said outlet to be opened and the contents of the radially partitioned sections to pass into said outlet by the'r'aising oi the tube t2. The primary receptacle t is provided with radial partitions of which one, 755, is fixed and the others, 736, are made movable, extending towards the center from the outer cylindrical wall and provided on their inner edges with suitable packing, which bears against the outside of the tube t2 and, while forming a sufficiently tight connection therewith, permits the tube t2 to slide up'anddown with respect to said causes the end of the radial partition tobe I A pipe tlll, leading from some source from which it is desired to deliver pulp into one of the compartments oi the primary receptacle, is connected to the valve til controlling the discharge into the primary receptacle. The valve t is operated by the arm .tl2 whichcarries the float tl3, the purpose of which is to cause the valve ii I to close when the pulp hasreaohed a sufiicient receptacle may be supplied by similar means as desired. Y

H4 and H5 represent the metering units for furnishing color, size, clay solution, or other ingredients for each batch of stock as previously described. These dippers in these metering units are pivoted at H6 and are attached to the rods ti! which in turn are pivotally attached to bar H3. The raising of the bar tl8 will cause the dippers to be lifted and to discharge their contents into the top of the tube 152. The rod 33, on which tube 152 is supported is alsoattached to bar H8. The bottom end of rod t3 slides in a guideway provided in the center of the spider tl9. electric thrustor (or compressed air cylinder as previously described) supported on a base 2l which in turn is supported on the plate i22- covering the primary receptacle. The pushing upward of the bar t23 of the thrustor unit causes the bar tl8, with which it is connected by rods r24, to'be lifted. Lifting of the bar tl causes the tube t2 to be raised, allowing the compartments of the primary receptacleto discharge thru the outlet t, and causes the dippers H4 and M5 to be raised and to discharge their contents thru the tube t2 and outlet t. v

I claim: v i

'1. Inan apparatus of the character. described for'making up batches of flowable material, a batch make-up receptacle, 2. receiving receptacle, means for transferring the contents of" said make-'up'receptacle to said receiving receptacle,

i2!) is an a float in said receiving receptacle, a vertical pipe carried by said float thru which said receiving receptacle discharges, an inlet orifice in said pipe located a predetermined distance below said float, whereby said'receiving receptacle will discharge thru said orifice in said pipe at constant pressure.

2. The. combination described by claim 1 including manual means for'varying the size of the v inlet orifice of the I discharge pipe.

I 3. In an apparatus of the character described for making'up batches of flowable material, a batch make-up receptacle, means for supplying material to. such receptacle, means controlling the delivery into said make-up receptacle, a receiving receptacle, means including a pump for transferring the contents of said make-up receptacle to said receiving receptacle, a control included in said transferring means, a float in said receiving receptacle, said float actuating the controlv in saidtransferring means, a vertical pipe carried by. said float thru which said receiving receptacle discharges, an inlet-orifice in said pipe located a predetermined distance below said float, whereby said receiving receptacle will discharge thru said orifice in said pipe at constant pressure.

4. In an apparatus-of the character described for making up-batches of flowable material, a batch make-up receptacle, means for supplying material to such receptacle, means controlling the delivery into said make-up receptacle, a receiving receptacle, means for transferring the contents of said make-up receptacle to said receiving receptacle and a valve controlling such transfer, an electricaily actuated means operating said valve, a float in said receiving receptacle, said float carrying a tripping element for a switch in' the electric circuit of. said electrically actuated means, a vertical pipe carried by said float thru which said receivingreceptacle discharges, an inlet orifice in said pipe located a-predetermined distance below said float, whereby saidreceiving receptacle will discharge thru said orifice in said pipe at constant pressure.

5. The combination described byv claim 4 including manual means for varying the'size of the inlet orifice of the discharge pipe.

6. In an apparatus of the character described including a make-up receptacle for making up paper stock comprising various ingredients, a means for introducing measured quantities of material into said make-up receptacle, said means comprising a rockable member including a spout, a dipper carried by said rockable member and discharging into said spoutya supply tank into which said dipper is lowered, said dipper having a fiiling and drainage slot in one side, and said dipper'being adjustable on said rockable memberso as to vary the discharge therefrom, from a partial to the complete emptying thereof, and means for controlling the movement of said rockable member. i

7. In an apparatus ofthe character described for making up batches of flowable material, a batch maize-up receptacle provided with a movablepartition dividing the same into compartments of variable capacities, means for supply- 1 ing material to such receptacle, means controlling said receiving receptacle, said float actuating the control in said transferring means, said means for introducing measured quantities of supplemental material into said make-up receptacle comprising a rockable member including a spout, a dipper carried by said rockable member and discharging into said spout, a supply tank into which said dipper is lowered, said dipper having a filling and drainage slot in one side, and said dipper being adjustable on said rockable member so as to vary the discharge therefrom from a.

cle, means for intermittently transferring the contents of said make-up element to said receiving receptacle, said'receiving receptacle having continuous discharge, but at a lesser rate than the rate of transfer of material thereto from said make-up element, acontrol for said transferring means, and a;control for said material supplying means, a float insaid receiving receptacle, said float operati'ng'said controls, respectively, in response to the rise and fall of said float to predetermined levels attained by the material in said receiving receptacle, being adapted to interrupt the supply of material to said compartments, and simultaneously permit transfer of material from said make-up element to said receiving receptacle, when the latter is emptied to a predetermined low level, and to interrupt the transfer of material from said makeup element to the receiving receptacle, and simultaneously cause further supplying of said compartments, when the receiving receptacle is filled to a predetermined high level.

9. In an apparatus of the character described,

a batch make-up element, a beater having an outlet into said batch make-up element thru which material may enter the make-up element when the level of material in said make up element is below the level of material in said beater, a screen covering said outlet, a receiving receptacle, means for intermittently transferring the contents of said make-up element to said receiving receptacle, thus lowering the level of the material contained in said make-up element, and permitting flow of material thereinto from said beater, said receiving receptacle having a continuous discharge, the rate of filling of the makeup element from beater, and the rate of transfer from make-up element to receivingreceptacle being greater than the rate of the discharge from the receiving receptacle, a control for said transferring means, a float in said receiving receptacle, said float operating said control in response to the rise and fall of said float to predetermined levels attained by the material in said receiving receptacle, thus interrupting delivery from the make-up element into the receiving receptacle when the latter is filled to a predetermined high level, and permitting further filling of the receiving receptacle when emptied to a predetermined low level; the filing of make-up element a from beater occurring during the interval the material in receiving receptacle falls from its predetermined high to low level, and the filling up of said make-up element being timed to occur during a lesser period than-said interval, thus.

causing the building up of the level in the makeup element to that of the material ingthe beater, and preventing flow thru said screen from the beater into the make-up element, whereby the continued rotation of the material in the beater tends to dislodge the particles of material adhering to said screen.

7 10. The combination described by claim 8 with adjustable means for varying the size of said compartments in said batch make-up element, whereby to control the proportioning of the amounts of the ingredients in each batch of said flowable material.

11. An apparatus of the character described, comprising a batch make-up receptacle, automatic means for supplying material to said make-up receptacle, a receiving receptacle, means for intermittently transferring batches of material from said make-up receptacle to said receiving receptacle, a control in said transferring means, a float in said receiving receptacle, a discharge pipe for said receiving receptacle, said discharge pipe carried by said float, an inlet orifice in said pipe located a predetermined distance below said float, said float operating said control in response to the rise and fall of said float to predetermined levels, thus interrupting delivery from the make-up receptacle into the receiving receptacle when the latter is filled to a predetermined high level, and permitting further filling of the receiving receptacle when the receiving receptacle has been emptied to a predetermined low level, the discharge from said receiving receptacle being at a lesser rate than the rate of.

transfer of material from the batch make-up

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