US1759231A

US1759231A - Liquid distributor

Info

Publication number: US1759231A
Application number: US174922A
Authority: US
Inventors: Feldmeier Harvey; Charles B Dalzell
Original assignee: Cherry Burrell Corp
Current assignee: Cherry Burrell Corp
Priority date: 1927-03-12
Filing date: 1927-03-12
Publication date: 1930-05-20
Anticipated expiration: 1947-05-20

Description

Y May 20, 1930. H. FELDMElr-:R ET AL LIQUID DISTRIBUTOR Filed March Y12, v192'7 2 Sheets-Sheet l w l 20% A TTU/F/V.

May 20, 1930. H. FELDMEIER ET AL 1,759,231 y LIQUID DISTRIBUTOR .A Filed March'lz. 1927 2sheets-sneez 2 /A/l/ NTU/P.

Patented May 20, 1930V HARVEY EELDMEIEE AND CHARLES E. DALZELL, oE LITTLE EALLs, NEW YOEIQA PATENT SIGNORS TO D. H. vIBTII'ItIIztIlIlIJ & CO'., INC., OF LITTLE FALLS, NEW YORK v i LIQUID :DIs'rEiEUToR Applicationled March 12, 1927. Serial No. 174,922.

This invention relates to liquid distributors, and kmorey particularly tothose which may be employed in connection with the treatment of liquids, such as milk, where the parts of the distributor exposed to the liquid should be -easily accessible for cleansing purposes. Heretofore, it zhas been a common practice in the treatment of milk or cream,

interchanger wall or surface which maybe in the form of superposed but spaced horizontal pipes,`so that the liquid will flow overthe surfacesof the pipes, successively and be suitable cooling or heating medium which is circulated through thetpipes, thedischarge of the milkv or cream upon' the upper portion of the heat interchanging wall or uppermost cooling or heating pipe, for example, without spattering of the milk or cream so deposited upon such wall or upper pipe, has been diiiicult to accomplish, and difiiculty has also been experienced heretofore in obtaining a uniform distribution of the liquid film along in the rate at which the liquid is deposited upon such heat interchange surfaceor pipes.

An object of this inventionis to provide an improved liquid distributor with which a liquid to be treated may be flowed over a heat interchanging surface or'vwall as a iilrn at various rates without sp'attering and with a substantially uniform distrbutionof-thel 35. flow'along said 'surface or wall, unaffected by the rate of flow.

A lfurther object of the invention is to provide 'an improved device for depositing a liquid to be treated upon a heat interchanging surface uniformly along the length of the same', and with which all parts exposed to the contact ofthe liquid maybe easily reached for cleansing purposes.` y v A further object is to provide an improved device for accomplishing each o r any ofthe above objects,- which will be relatively simple, durable, `practical vand inexpensive.

. A further object of the invention is to provide an improved method ofvunifo'rmly distributing a liquidto the treated upon a heat such as-during the cooling yor heatingof the same, to flow the same as a film over a heat cooled or heated by a heattransfer with a such surface or pipes through all variations interchanging wall or surface. ing rates. I .I

Variousother objects and advantageswill be apparent from the following description of an emb-odiment of the invention, and the novel featuresv will be .particularly pointed out hereinafter .in connection` with the appended claims. f n .n Y A In ,the accompanying drawings:

Fig.l1 is a front elevation ofthe upper" v,part of a heat interchanger constructed in accordance with thisinvention; Y

Fig. Qis a similar elevation of a part o at all operat- F ig.l 5 is a transverse, sectional elevation .of the same, approximately along the line 5 5 of'Fig. 1, and illustrating the manner 1n which the liquid is distributed uniformly Vupon the heat interchanging surfaces; and Fig. 6 is a fragmentary,vsectional elevation throughy apart of thev coupling head and V illustrating the manner' of connectingthe outer tube thereto. f

In the illustrated embodiment of the in-v vention, the heat interchanger may include a vertically disposed row of

pipes

10,11, 12, etc., which extend between spaced headers 13 through which the ends of the pipes are con-k nected together alternately, so that a fluid 'may be circulated successively through said disposed just` above the uppermosthorizontal cooling pipe 10 and, if desiredat a point intermediate the ends of the same, as shown in Fig. 1. A supply pipe 16 is secured to the vdischarge passage of the head, so as to form a horizontal continuation thereof, the end ofthe pipe 16y being received withinr the bore of the discharge passage and secured therein any'` suitable manner, such as by 5 Welding, brazing or shrinking. Y

A second or distributingfpipe or tube 17 ,L considerably larger than the'pipe 16, is fitted 'i over the i'pe16 in spaced relation therewith,

*andfitte' `at oneend over a'boss 18 which surroundstthe discharge passage of the fheadfromy which the pipezlG extends.'v The boss may have a beveled abutmentwall,lil-against whichgan outwardly flangedend2Q .of t'hepipe f 'or tube' '17 kmay. 'abu't, .asy show'hjin Fig.. 2. A

ferrulel 21 vmay be'securedjto the free'end of 7 y the inner pipel in any suitable mannensuelr c as by weld1ng,b razing or shrinking the saine 'l IV -15' Y Y `threaded to receivean enclosing'fflange' of a @afp which abutsfthe free endjof lthepipe ror the route-r` pipe or-tube' 17 and effectively Yclose pipe`17 firmly against the beveled'shoullder or f 3()^ thereto, and this ferraille :may 4be yezdernally :points along Ythe lengftliof the saine will tend i to, seekits own :level in the outer pipe, and thus Awill leave the outer pipe through the rows` The. free fend edgeofthe fl'angeof the cap "2,2may also haveabeveled or inclined surface '23V for abutting against an outwardly 'extending flange 24eV atthe free endrof the tube or pipe17, asshown in 'Figure 2so that vwhen the capv is threaded "upon thefferrula'it will wedge itself into'the ladjacent" or ,free endV of 1thespaeebetween tlre'concentric pipesjl and 17 at their free \ends,gaswell Vas forcethe outer surface 1,9 oftheheadl.y This provides 'a 1 simpleY and'r prac-tical manner of connecting Vv `the lpipes '16'and17 to the Vhead k15 and for closing the space between .the free endsrof the l f Vpipes 16 and`17 i Theicap may have alug 25 extending from 'its outer end face, whichV may V*be*lre `zeived and mountedl'ina slot 26* in a Y la ' proper"horizontfal'ipositions over the upperL heat interchangepipelll. Y' Y lbracket 27 removablyiclamped tothe upper end of an adjacent header 13'of; the cooler.

The bracket27 and the cap thus serve to "supy pertthe free ends of the pipes 16 and17 inV The'outer pipe or tube 17 VVis'provided along Yeit'slower por-tionwith one or more rows of V-apertures28 (Figs. 4 and 5) there being prefy Y era-blytwo rows of such apertures arranged Y along the length ,ofthe pipeor tube 17 at Y points slightly spaced laterally from a verti' calv plane through the 'center ofthat tube or j pipe. The'tube orpipe 17 is slightly 'spaced above the uppermost cooler pipe 10, so that a'liquid in the pipe or tube 17 flows therefrom through said rows of aperturesand fall upon v ,Y the pipe lslightly at each side ofthe uppermost-edge-or surface ofthe pipe 10, as shown inFigng,` j `Thu-saliquidin the pipe or tube 17 will-leaveit irrtvvo` sets of streams, which in strikingthepipe'lrwill lowy down opposite e V sides thereof infillnsfas shown in Fig.V 5.

60. Y pipe lOwillbe `guided or delleeted, such as by The liquid reaching the lowerportion ofthe abar or lin 29therein, to opposite sides .of the next lower. pipe 11-1 fin two'silnilar lstrea1nsso `that the two lilins will flow: successively .fromy pyipe'to'H pipe under the rijn'llu'mvceofv gravity,

vs'hich the liquidl enters thetube 17fmust fno 4tures 28' under a headless 'thanthediameter length of thejpipe 17. Thejetsgofliquid and while so passing over the

pipes

10, 11, 12, etc., the liquid lihnwill be subjectedlvto a heat transfer through these Vpipes withlthe fluid circulating through said pipes. f i

The innerV pipe 16 isl provided withV an o outlet slotv or plurality of outletpassages orv apertures 30 arrangedalong the length of the same, softhat a liquidjto Vbe treated'U which enters theV coupling l head -15 will pass into the inner pipe 116. fan-dgjbe dis-V 'charged therefrom intoV the outer Ypipe or Ytube 17 ata vplurality of points along-the' length of thesanie.. The liquid thus dis` charged into the outer pipe 17 at different of 'apertures'28 thereof underV a head which is f f' substantially uniform throughout the length `of the pipe 17, regardless of the rate `at which the liquid is supplied' t'hereto.,fand:substan-f ti'all-y independentlyhoff the .arrangeurent'y or size of the `apertures igalong'the innerpipe *16* through .which vthe liquid.- issupplied thereto, provided, 'of'.course,.that` the rate` at exceedthe rateat whichit can leave 'the ap'ere of thetube17. Inother words, the relation ofthe apertures S0 and issuch'that: thetu'b l17y never'runsfull of liquid,l Y i, Preferably the 4apertures 30 v.are arranged- Vin a row along theuppergpartlof the inner, pipe 16, as shown in Figs. 2 andj, so that, the c y jets y of the`l liquid discharged therethrough Y willl enter the 'surrounding pipev or" tubej17 at points out of alinementwith theapertures 28, and preferably spaced angularly therefrom about theaxis of the tube 17: This arrangement aids in promoting a uniform distribug. tionfof Vthe liquid tol be treated,1 4alon the leaving the apertures `30 lmay* strike and be Y spreadby the inner surface 'of the surround-V ling vpipe `or tube 17and in fiowing-downthe 110 inner surface ofthe pipe V17'. will alsobe disv 'tributedinore or less uniformlyalong ,the Y length thereof.l These features all assist in obtaining levels of the liquid in the pipef17 always substantiallyuniform Vthroughout its length, under all operating conditions.

, rlhe inner pipe 16A may also be 'provided with a srnall drainage aperture 31, in l its lower part, through which'the contents of each innerpipe may drain into' the Vsurrounding pipe' whenever the lquidsupply is-cut .Y off from the'vheadj15, and-'the'liquid thus.` draining into the outer pipeswill of course bedischarged through' the aperture 28upon the heat interchanging walls or pipes.

,Y The relative capacitiesof the apertures in the inner and Vouter .pipes 16 andv 17, is such that `during normal flow. of the liquid through, the pipes, a headof liquid will be maintained in lthe outer'tube. L

CIL

The end of the outer pipe or tube 17 which is received upon the head 15y may be provided with a slot 32, which slidingly straddles a pin or screw 33 providedy upon the Yboss 18 of the head, in order toinsure proper positioning ofthe rows of apertures 28 relatively to the heat interchange surface.

From the foregoing it will be observed that `when a liquid to be treated is forced through rrate at which the lliquid is forced into the pipe or tube 17, also independently of the height of the level of the liquid in the tube 17, and also substantially independently of the 1 distribution and size of the apertures 30 along the inner pipe 16, provided that the tube 17 never runs full of liquid. :Thus a iiow of liquid vover the heat interchanging walls yorpipes will be obtainedwhich automatically is uniformly distributed 'thereon throughout all variations in thepoperating conditions of the device. be disposed at one end of the interchanger or be in the form of a T and be disposed, as shown, between the ends of the

pipes

10, 11, 12, etc. and supplying two sets of'pipes 16 and 17 extending inL opposite directions.

The device may be readily taken apart for the cleaning of all surfaces exposed to the liquids, by merely removing the caps 22 'and then removing the outer pipes 17. The inner pipesthen are exposed for the cleansing of both inner andl outer surfaces, and the passages of the head 15 are also then accessible for cleansing. The inner surface of each ypipe 17 is*k also thus conveniently accessible Afor cleansing.

vWhile there will be a short section of the pipe 10 immediately beneath the Ahead upon' which the liquid to be treated will not be directly sprayedfor discharged, this space is comparatively short compared to the whole length of the cooler, and as the liquid passes downwardly over` the pipe 10, it will tend to spread endwise of the pipefand cover this relativelyk short section. l Ordinarily, this liquid will have covered the surface along the entire length of the

pipes

10, 11, 12, etc. before the bottom pipes are reached. However, it will be understood that a few holes may, if desired, be provided in the ybottom The Ahead 15 may cause some of the spattering, the avoidance of which is sought by this construction. Y t

It will be observed that with the apertures 30 in the inner pipes 16 opening upwardly, any foreign matter that may enter these pipes 16 drops to the bottom so as not to stop or clog the apertures 30 kor cut down the disl tribution or flow into, the distributing .or outer pipes 17 If the holesBO opened downwardly, any foreign matter' getting into the pipes 16 might entirely stop the apertures or ,While the invention has been described in connection with an embodiment particularly applicable for the cooling offmilk'or cream,

cut down the effective capacity of the pipesv it will be understood that the device is equally y useful in and applicable to all heat interchangers or the like, whether Vheating or cooling, where a uniform distribution of a lowing liquid under various operating conditions is desired.

thevdetails, which have been herein described and illustrated, in order to explain the nature of the invention, may be made by those skilled lt will be obvious that various changesin in the art within the principle and scope of v to and fitted at one end to said head, a capY connected between said ferrule and the free end of said ytube to close the space between.

the tube and ferrule at the free end of the pipe and also close the free end of the pipe,

said tube having apertures arranged-along the lower portion thereof, said pipe having apertures opening into the space between it l and the tube at points out of alinement with the apertures in said tube, whereby a liquid entering said pipe from said head will ente-r said tube at a plurality of points spaced along the same, andthe liquid leaving-said tube will flow under a head which is uniform throughout the length of the tube, substantially independently of the distribution along the tube of the liquid entering therein from the pipe.

2. In a liquid distributor, a couplinol head,

a pipe extending horizontally from and communicating with the bore of said head and having,` a ferrule ,at its free end, a tubeisurroundingsaid pipe in spaced relation thereto and fitted at one end to said. head, a cap connected between said ferrule and the free end of said tube to close the space between the tube and ferrule at the free end of the pipe andalso close the free end vof the pipe, said tube having apertures arranged along the lower port-ion thereof, said pipe having i apertures opening into the space betweenpit and the tube at points out of alinenie-ntwith the apertures Vin said tube, wherebyfa liquid entering said pipe from said head Vwill enter Y said tube at a plurality ofpoints spaced'along the saine, and the li'quidleaving said tube will 'n -flow under a head which is uniform throughn out thelength of thetube, substantially inde- Y pendently ofthe distribution along the tube flo of the liquid entering therein from the pipe,

said pipe also haviiiga sinall aperture in its f lower part to `perinit drainage of anyv liquid remaining in said pipe'intothetube when 'the supply of liquid tol said pipe is cut oli.

3i. In alliquid distributor, a ycoupling head having a horizontally disposed discharge opening, a horizontally extending pipe con# nectedto said head and `forniinga continuaY tion of said opening, a tube surrounding and' spaced fromfsaid pipe' and fitted at one end against said head, means for closing the free end of said pipe and the 'space between-saidv pipe and tube at the free end of said pipe,

said tube having apertures arranged lengthwise along the lower'part thereof, said Apipe `havinor a ertures o enine` into the s acebetween'tlierpipe andvtube at-apluralilty of Vpoi-nts along ,the same, whereby the liquidleaving said tube throughn its apertures will flow under a head substantially uniform throughout the length thereof, independently Y i v of the amount of liquidentering the tube at any point valong the length of the saine, and independently of the level of the liquid in the tube yat any time. i t y Y 4. *In* a liquid distributor, a coupling head f having ,a horizontally disposed discharge opening, a horizontally extending pipe connected to said head and forming yay continuation of4 said opening, a tube surrounding and spaced from said pipe. and iitted atrone end. vagainst said head, means for closing the free end of said pipe and the space betweensaid lpipe andv tube at the freeend of said pipe, said tube having apertures arrangedv length-` wise along thelower part thereof, said pipe having apertures opening` into the space be- 'tween the pipe and tube at aplurality of Y points along the saine, whereby the liquid 'leaving said tu-be. through its apertures will 4iiow under al head substantiallyV uniform throughout the' length thereof, independently ofrthe'ainount of liquidr entering the tube at f any point along the length of the saine, and

ing in said pipe will drain into said. tube and leave-said tube through the apertures in the Y latter.

5.',In a'liquid distributor, a coupling head having a horizontallyextending ldischarge opening,a pipe extending horizontally from yalong-the entire vlength Vthereof said head and forming va continuation of said opening and being open at its rfree end, a `'tube surrounding and spaced from said pipeand seated. at one end against kand attached to saidhead', and a cap `closing the space between said pipe andtube andA alsoclosing theopen end of said pipe, said tube having apertures y Y arrangedlengthwise along its lower part, and

said pipe opening into said tube'at a point intermediate the ends of the saine, whereby the liquid leaving said tube will flow Vunder a head uniform along the entire length'thereof.V

6. In aliquidv distributor,V a coupling head having a horizontally extending discharge' opening, a Vpipe extending horizontally from 1 said head and vforininga continuation of said opening and being open at its free end,'a tube surrounding and spaced from said pipefand seated at one end against and attached to said head, and cap closing the space between said pipe and tube and also closing the openendV of said pipe, said tube 'having apertures arranged lengthwise along its lowerV part, .and said pipe having openingsV into saidtube at a plurality of points along the saine,the apertures in said pipebeing out ofalineinent with those'of the tube, whereby the liquid leaving Y saidtube will flow under a' head uniform ,y

7 In a liquid distributor, a coupling head having a Ahorizontally extending discharge opening, a pipe extending horizontally from said head and forming a continuation of said lopening and being open at its free end, atube surrounding and spaced Vfrom said pipe and,`

seated at one end against and attached to said head, and a cap closing the space between said pipe and'tube andalso closing the open l end of said pipe, said tube having apertures i arranged lengthwise along its lower'fpa'rt,

and said pipe having openings into said tube at a .plurality of points along the saine, the A apertures inv said pipe being arranged at points spaced angularly about the axis of the ypipe from the apertures'in said tube, whereby the liquid leaving said tube will fiowunder a' head unifornialong theentire' length thereof.

8. In a liquiddistributor, a coupling head Vhaving a horizontally opening discharge passage, a horizontal pipe connected yto said vheadand'forniinga continuation ofsaid pas,-

sage, a tube surrounding and spaoedfrom riio said pipe and removably lfitted at one endto said head, a cap removably attached between the pipe and tube at their free ends for closing therspace between` the pipe and tube and closing the free end of said pipe, saidtube having apertures arranged lengthwise along the lower part thereof to discharge .its con-rV tents, and. said pipeopening into said tube at at least a point intermediate the length'of the saine, whereby `the Yliquid leaving said tube tire length thereof.

9.' In a liquid distributorpa 'couplinghead izo " will flow-under a head uniform along the en-4 f *19 a second pipe surrounding and spaced ii'oni ein.; to renin, coniprismg a umanitari having a horizontally opening discharge passage, a horizontal pipe connected to said head and forming a continuation of said passage,ia tube surrounding and spaced from said pipe and removably fitted at one end to said head, a cap removably attached between the pipe and tube at theirgfree ends for closing the space between the pipe vand tube and closing the free end of saidpipe, said tube having apertures arranged lengthwise along lthe lower part thereof to discharge its consaid head, a cap removably attached between the pipe and tube at their free ends for closing the space between the pipe and tube and closing the free end of said pipe, said tube having apertures arranged lengthwise along the lower part thereof to discharge its contents, and said pipe having apertures opening into said tube at a plurality of points along the length of the same, the apertures in said pipes being disposed along the upper part thereof, said pipe also having a drainage aperture along its lower part opening into said tube, whereby the liquid leaving said tube will flow under a head uniform along the entire length thereof. A

1l. In a liquid distributor, a coupling head having a horizontally opening discharge passage, a horizontal pipe connected to said head and forming a continuation of said passage,

a second pipe surrounding and spaced from y a said first pipe and removably fitted at its free end to said head, a cap threaded to the free end of one of said pipes and abutting with the free end of the other of said pipes for closing the space between said pipes, and also closing the free end of said rfirst pipe, said outer pipe having apertures arranged lengthwise along the same at its lower part, said first pipe having a plurality of apertures arranged along the same and opening into the space between thepipes, whereby the liquid leaving said tube will flow under a head uniform along the entire length thereof, the removal of said cap permitting removal of said outer pipe to permit cleansingv of both surfaces of both pipes. f

12. In a liquid distributor, a coupling head having a horizontally opening discharge pas` sage, a horizontal pipe connected to said head and forming a continuation of said passage, a second pipe surrounding and spaced from said first pipe and removably fitted at its free l end to said head, a cap threaded to the free end of one of said pipes'and abutting with, the free end of the other of said-pipes for closing the space between said pipes, and also closing. the free end of said first pipe, said outer pipe having apertures arranged lengthwise along the same at its lower part, said first pipe having a plurality of apertures arranged along the same and opening intothe space between the pipes, whereby the liquid leaving said tube ywill iiow under a head uniform along the entire length thereof, the removal o fsaid cap permitting removal of said outer pipe to permit cleansing of both surfaces ofboth pipes, said head and outer pipe having cooperating parts insuring'the positioning ofthe outer pipe with its apertures in the lower part thereof whenever the outer pipe is attached to said head.

having a horizontally opening discharge passage, a horizontal pipe connected to said head andforming a continuation of said passage, asecond pipe surrounding and spaced rst pipe having'a plurality of apertures ar-` ranged along the same and opening into the space. between thev pipes, whereby the liquid le'aving'said tube will flow under a head uniform along the entire length thereof, the re-` moval'of'said cap permitting removal of said outer pipe to permit cleansing of both'surfaces'of both pipes, said cap also having an', extension serving as a support for the free i' ends of the pipes. 14.V A distributing device ing a tendency to foam, comprising a pair of horizontal tubes, one enclosing theA other,

for a liquid havi means for supplying the liquid under pres'- sure to the inner tube, said inner tube having a rseries of holes arranged lengthwise along itsv top,`the outer tube being spaced from the bottom of the inner tube andlhaving a plurality of holesarranged along its bottom, the

relative capacities'of the openings in ythe 'inl ner and youter tubes being suchV that during normal fiow of the liquid through saidtubes, a head will nbe maintainedin said outer tube,

whereby the liquid will passv through said` outer tube and equalize its level insaid outer tube, Vand beldischarged therefrom as a relativelyy broad stream which remains uniform throughout its width independently ofthe rate of'flow, and foam of the discharged'lq.-

uid will be dissipated.

l5.' A distributor for liquidshaving a tent ency to foam, comprising a horizontally arv esl l 13. In a liquid distributor, a coupling head A.

i' 15` v Y out its length, the liquid will equalize its own rangedpipe` having apertures arranged atv intervals along the length of said pipeclosely adjacentits bottom, a seeondhorizontally arranged pipe communicating withfthe first pipe at alplurality of points along thelength of the saine, and from the same vertical level in the second pipe, and means for supplying t saidliquid under pressure t t0 said second pipe, the relative capacities ofthe apertures and the communications between theV inner and outer pipes being such'that during norl mail flow of the liquid'through said pipes, ahead will be maintained inY said outer tubel whereby said liquidwill be. supplied to said Y iirstlpipe approximately uniformly throughlevel in said first pipe, and theifoarn insaid liquid will be .dissipated throughout the stream discharged'from the irst pipe.` Y Y 16. A'distributor for liquids having a teniV "dency to foam, which vcomprises a pair of Vtubes one 'within and largely spaced froin i tendencyY to foam, which 4 comprises a ypair of tubes one Within and largelyspacedfrom Y the other, the outer Vtubehaving apertures arreharged liquid.

the otherfthe outer tube having 'aperturesKV arranged alongits bottom for discharging its QOntents, and said inner tube having apex. l 'tures arranged at the same level and .at a plurality of points along itsrlengthfor dis-l charging its contents into said-outer tube,v Vand means "for delivering the liquid underV r pressure to said inner tube, wherebyv the liquid vwill be `discharged as a thin broad stream, .uniform throughoutits width and independently of the rate of flow, and any foam forming 'will be dissipatedin the dis* 17. A distributorV for liquids having a ranged along its bottom for discharging its contents, the inner ,Y tube having Aapertures arranged at the saine level andfat a plurality of points along its length for discharging its ,contents into the outer tube, the apertures in the inner tube being disposed angu- .larly about theaxis of the inner Atube from Y the apertures inthe outer tube, whereby the liquid in the space between the tubes will have an opportunity to Vadjust its own level kbeforefbeing discharged from the outer tube, andlneans for supplying said liquid. under pressure to the inner tube.

A18. .The method of discharging a liquid having a tendency toy foam, in a relatively i thinv broad. streamsubstantially free from i foam, V"which comprisesV dischargingv 'said Y liquid froma horizontalr pipe at a plurality 'Y lof points along thepipe. into an enclosing chamber, building up aheadrof liquid inzand partially filling said chamber, and dischargingsaidliquid under said head Vfrom said chamber at a plurality' of spaced points arranged to form said thin broad stream.

f HARVEY FELDMEIER.' CHARLES B. DALZELL.

CERTIFICATE 0F CORRECTION. Patent No. 1,759.1231. Granted May 20, 1930, to

HARVEY FELDMEIER ET AL.

It is hereby certified that the above numbered patent was erroneously issued to "D. H. Burrell & Co., Inc., of Little Falls, New York", whereas said patent should have been issued to "Cherry-Burrell Corporation, of Wilmington, Delaware, a corporation of Delaware'rsaid corporation being assignee of the entire interest in said invention, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 24th day of June, A. D. 1930.

M. J. Moore. (Seal) Acting Commissioner of Patents.