US62993A - Andrew barclay - Google Patents

Description

atten gratis getint fitte...

`Annanwfminerais oF'KiLMAnNocK, NoaTn entrain.-

'Leaere Peeeea Ne. 62,993, ezeeeez' Meret 1e, 1867.

IMPROVEMENT nt irtser'sas rea STEAM esusaaroas. Y

.dlgs djchrle rifatta tn in ilgesc @titers glutenttmh making pitt nt the sans.

lTo wHoM 1T M -AY ooNoEaN: e l e Be it known that I, ANDREW BARCLAY, of Kilmarnock, in 'the county of Ayr, North Britain, have invented certain new and useful improvements in Apparatus for Injecting or Eje-ating Fluids or Liquids; and I hereby y declare that the following is a full, clear, and exact description of the same.

Thisinvention relates to certain improvements in apparatus used for the purposes of injecting and ejecting lfluids and liquids, and consists chiefly in theV arrangement of the steam and water nozzles as hereinafter described,

and in the construction of'the apparatus so asv to admit of its .being easily opened up, rendering the packing,y

stalling-boxes, the., around the steam passage, accessible and capable of being adjusted without necessitating the taking asunder of any parts oi the inst'runierit.I Another improvement under this invention consists in forming a tapered or conical condenser, into which'steam or other .eondensable vapor is admitted, in. such quantity as may be requiredfor the purpose of injecting or ejecting fluids. In this arrangement, the iivuids injected or ejected have imparted Jtti-them the momentum of the fluid, moving with the velocity of the vapor yused rushing into a vacuum. In this apparatus the condensation may be eil`ected in any ofthe modes generally used for condensing' steam or other vapors. These hereinbefore-xnentioned arrangements are inorec'learly` described in reference lto sheet 1 of the accompanyingl drawings,v

i v Description of Drazvz'iigsSeeat 1. One Inodiication of this improved apparatus isshown in vertical section in Figui-e1. The cylindrical body of the apparatus may be all cast inxone piece, but it is preferred to construct it of three separate parts, screwed or bolted together, ns shown in fig. 1. The steam in this modification enters' by the branch pipe A, the water or other Huid to bc raised enters by the branch pipe B, and the overflow is formed by the branch pipel C, cast on the lower part ofv the apparatus, as also the flange D, which iiange forms the connection to the boiler or vother receiver, through which the fluid to be injected passes'. The steam nozzle E is screwedl into one end of the adjustable cylinder F, and is lsurrounded by an envelope or casing Gr, leaving a free space between the outsideoi' the nozzle E and its casing this space may be filled with any non-conducting substance, or it may only contain-theair enclosed in putting'on the easing. The object of surroiiiidiiig' the steam nozzle with any non-conductor of heat is to maintain a .higlr temperature ot" the steam until it reaches the exit from its nozzle E, as priming is very injurious whilstiforming the vacuum. The water or second nozzle H, in this modiy {ica-tion, is extended to a considerable distance beyond the first or steam 'nozzle E, and becomes of an annular form bythe introduction ofA the centre adjustable spindle I. The tapered form of this spindle I, when raised or lowered, yby turningthe hand-wheeld",l increases or diminishes the annular space, to suit the pressureiof steam employed, and the height from which the water or other uidhasto be raised. At a short distance from theinozzle H, a receiving nozzle or throat, K, is so placed and adjusted by means of va self-acting valve, L, that when a greater or less quantity of iuid is discharged from the nozzle H, the throat accommodates itself accordingly. The adjustable cylinder F may be raised or lowered by turning the hand-wheel M, 'through the introduction of a screwformed-on itself, working' in a nut formed inthe upper part of the apparatus, as shown 'at N, or any other` convenient appliance, toobtain a similar eli'ect, that is, the-'raising andl lowering ofthe cylinder to suit the desired quantity of fluid to be injected. A series of'holes o'r slotsl is formed opposite. the steam branch A, through whichthe steam passes to the interior of the cylinder` F, as indicated by the arrow at O. To maintain a perfectly air-tight packing between the(steani branch A and the nozzlechamher P,'hemp or other elastic substance is forced into the space Q, between the adjustable cylinder F and the body ofthe apparatus, by meansof a gland, R, which may either be screwed into thebody of' thel apparatus itself, or byv studs or-bolts through flanges, as shown in figs. 1, 2,-and 3. The cylindrical part of the gland R, within the body of the apparatus, and where it passes the steam branch A, has a series of holes ory slots, so as to admit of a free passage of the steam to the interior of the adjustable cylinder F, and may be screwed up so as to compress the packing into the space Q, without in any way obstructing the steam passage. Whenthe water or other liquid has -to be raised about twenty ortwenty-iive feet, it is very necessary that the lower packing Q Should beperfectlyair-tight, and this can accomplished at any-time by screwing up the gland R, shown in gsfl and 2. 'lo prevent any passage or leak of steam within and-around the gland R, two stuiling-boxes with glands S and T, are screwed up by means of bolts er studs when required.' i The adjustable spindle' I is kept steam-tight 'by the stuing-box U. The action ofthe apparatus may be described as follows:V i 1 i j On steam being' admitted by the branch pipe A, it issues at 'the/nozzle E, and'on meeting the 4angle 'ofgthe second nozzle H, it isdeflected towards the centro spindle I, from which it is again'deilected towards the nozzle H, in a nzigzag-form; this zigzag wave motioncnpels the air from thc nozzle-chamber P, and thesteam, forming, .as it were, 'nnlannular uid piston, prevents anyzreturn through the nozzle Hf So soon as the vvacuum is suii- `cient to raise the water or other iuid to'be injected, it rushes in ,through the branch pipe B, and is expelled.by the-steamthrough the secondnozzle H, the 'water andsteam together now forming the duid piston in the nozzle H. The .water as yet may not have suiicient force to pass through the throatK; it therefore-gets'an outlet i bythe overow passage G.- On turning the hand-wheeled and Mf'so as' to -give both more vmter and steam, 4 vthe force imparted tothe water becomes suiiicient to pass through 'the throat K, and enter .the boiler orother receiver. In` starting the apparatus it is very essential that steam nozzle E s hould be very closej to the second nozzle H, when the u'ater has to be raised from ajgreat depth,` such as twentyive feet or tbereabouts.

Another modification of packingtlie adju'stabloV cylinder Il' is represented in Figure 4. In`thisarrangement one. gland, B, serves to maintain theadjustable cylinder F perfectly"steam.'aud. air-tight. Aroirnd he loose ring or cylinder `V, andl through it, are a series of-holes or slots, opposite the steam' branch A,`to admit of the steam passing to theinterior ofthe adjustable'cylinder. In another modification, with the steam and water branches .reversed5-'as in Figure 5, the steam for the first impulse strikes against the centre'. spindle I, and is. deliected towards'the' nozzle H, as shown by -the dotted lines in fig. 3 otherwise the action and' construction of the apparatus are s imilarte those just described. The `water-passim'g through the-nozzlefE is expelled through the, nozzle H by thesurroundingannulus of steam, 1 and'gains sufficient forca to pass through thcthroat K into the receiver, whereuater or 'other iiuids'arereqnired. .It will be'observed from the foregoing escription that watermay be raised from a 'great depth 'and fed into a steam boiler or other-receiver direct by the aforementioned apparatus' I l1 l' At Figure Gris shown in-vertical section another .modification of myimproved apparatus for injecting and ejecting iluids and liquids. The peculiarity o' thisarrangement is,4that initthere are two streams of water admitted, one through'the branchA, and another throughthe branch -B-,..xvh ilst lthe steam is admitted through the branch 0, and on issuing ,from the nozzles,.i'rl willle seen, onrefferring tothe drawingm'vthat thejeltof steam is enclosed or conl'inedhetween the tiro jets of water'issuingfrom-the-iiozzlesphnd'being@conductedl thence by the passages and E, leadinglfrom the branch'inletsAandlB respectivfely.t h' rrungement itwillbe -observed thatl the body'ofthe instrument is opened up sjo as tgain neces" l 'xt erioc' to .the-. 'severnl gland flanges F G vl-I and L by which the several jointsare kept 'steanftigli From the body.

of the upper part of the instrumenty a broad ilanch Kfiarojectsfiht'uxvhieh L u areirhily'secllred; 4the 1 lower end of these studs passing into, and`-un'ited to, .a--.sinzilarHauch.in'A thel ne ypart ci theapparatusi Between the vupper and lower body: parts of the instrument thel intermediate Mlis `intioduceth'.iisjhich' carries the outer set of nozzles. o nchside of the upper' end f this iratermediaA partie-blug, N,"projects, into which a screw-thread is f'cut for'. the receptionofthe screimO', by turning iv ioh'in"ei th lf aright -orlefti' hand direction the outer nozzlesare adjusted. The inner nozzle. isf adjusted b ctua'ting the fh'andf'Wheelv l?, with the tubular part Q, u'liich carries it; this tabula-ripari: turning in 'thescrevv o 'ori-R of th "outer part y of the instrument. The central spindleS'is adjusted as=in"the"preceding modifications I j Havingl pointed `out -in'detail the "inostimport'ant `parts'bf-this modicationfof my axdinventlpn new proceedto showrthedistinetiye features and vpe 1'1liariti es'oi' this `arrangementV tof b o; as follows, `thfats' Vto say, in this modicationthere aretwo water inlets or branches, A and B, in lieuof one' itsius'e'd. 1 the former modifications, whilst there is only one inlet `for steam, the two water branehesAjandzB being' in ldirectcommg nication v vith the two annularfnozzles.' '.When'it is desired tofeed 'a liuidofa somewhatelevated temperature, the warmed uidjis admittedv through the 'bi'ancli A, whence it travels orjpasses onwards to' the-central'tvater f space, but since the principle of` Ithe apparatus and itsy effectual ivorking'are 'chieiiy dependelitnpon the' formation of a vacuum produced by thecondensation of steam admitted at the branch @Bf-it. ous'fthat if the injected orejected uid beef a ver-y'elevated temperature, it will act detrimentally upon het'oi-king'of the instrument by preventingr so perfect ayacuum being formed. 4To counteract the production f Vth e'c't, `and 'to seeurethe very eientual Working ofthe instrument'prior to `the admission of the vheegteiilflul or one possessedof a temperaturesuciently low 'to insure the action being eec'tive, is`ist a edvv through the branch B, and this comingdncontact with the steam jet, causes the latinar 4tobe speedilycohdenseivvhen the cold water is impelled forward with ul velocity corresponding to thatf'thepressure of; rsteamnsed, rushing from an lorifice into'v'the atmosphere, `the impelled rwater having a-monientum equivalent tq it s o,\vn weight" multiplied by the velocity of the flow of the steam or other impellingiiuid. Sosoon as the'action 'of theV strip -ment is insured by the admission'ofithe cold Water` andisteain, then the heated liquid is? a(li f11 i. t;ted,tv and-1` is, as v.

it'wcre, pulledforward throughthe nozzle b'y the rushing action vof the colder fluid.' t Another'form of injecting or ejecting 4o ,ppalfatusis shown in vertical section 'at Figure'fwhich cf'nisists.l simply oan outer. casing, A, into which a current of cold Water orv other'iinidof low temperature is admitted by the branch B, and out of ivhich it flows bythe 'duet C. The use of these two branches, B and'G, is to 4provide the means to enable a continuous iiowv of cold uidaround the' conical nozzle D, into which steam is .admittedrand condensed.' v v 'i .4

When the.condensation-has.takemplace, acoutinuous rush of .steam ifrom thcsourceofthnt fiuid'impinges, upon the condensed portion and causes it to be emitted from lthe nozzle with a. momentum corresponding to the amount of condensed steam multipliedinto thevelocty with \v hich tho'ste am itselftvouldgiiush into a vacuum. j

Figure 8 is a modification ofthislast-naxned apparhtus, in'whih tl1e'thole, ora portion, of thccondeusing h fluid is ejectodfas wellcas the condensed iluid itself; this result being effected by making the nozzle to terminate a shmort distance lwithin the vesselcontaining the condensing iluid. l A A A Another improvement under this invention consists as follows: The portion ot' the apparatuswhich contains the steam and vater nozzles is furnished, at the end nearest the handles or wheels for regulating the ow of if the water and steam, with a flanch, into which'four or othernumber of pillars are fixed, being arranged to V carryi-atftheir upper ends, another similar Hauch, which projects from and forms part of 'u tubo; one portion 'i o i hich'cxtends,downwards into the main body ofthe instrument, leaving an annular space around it, whilst `the other portion above theila-nch has a screw-thread formed 'oniit,which is used, as will hereinafter he shown, for partly regulating the feed. The main portion ofthe instrument has a stuiling-boxformcd in it, and is pro. vided'with a gland, through which passes a'tubularpiece, carrying at its inner end the steam noz,zle. This lastmentioned tubular piece is furnished at its outer end with a ilanch, into which two or more pillars are iixedj these carry, at their upperend, a ring, which titsinto acircular'reccss formed on the regulating wheel or handle, and by turning the wheel or handle upon the screwed portion of the first-mentioned tubular piece, the st eam` nozzles are caused eitherrto recede or advance. It shouldbe'mentioned that the tube carrying the steain nozzle .I {its into and is capable of being moved upwards or downwards in the annular spaceformed by the irst-named tube and the body of the instrument. T wo of the pill-ars ofthe lower set und the two'i'orming the upper set ure screwed f so that nuts may pass over them for tightening the glands of the stuffing-boxes which surround both the first'and second-named tubular pieces. As itis desirable `to have as vunich-command as possible over the quant-ity of feed at any given time, to further this object, the`spindle by which the ilowof the steam from the nozzles is regulated e v is, under thcpresentinvention, made'hollow, and a solid spindlel is passed down through the opening. By means'` of this arrangement thel inner spindle is regulated to give any desired amount of opening for theyilow of the'- water, andis mudo topass downinto thc water nozzle for the purpose of enlarging or contracting th area of the opening. By moving the outer ring the flow of thoisteam can be varied or shut'o' as required. vThe ho'llew spindle passes through a stuing-boit iu the upper endof the screwed tubular piece. ,Another peculiar feature, 'oi` this invention consists in forming the valve in .the throat of the apparatus of such a curved' form that-by means of this form and the back pressure `of the feed water, its area of opening is made to exactly correspond at any time with the area of opening ofthe water nozzle. f' v There are other modes of varying the actual .arca'of the nozzles besides: the one ,hereinbefo're referred to, viz: An air-tight box ymay be cast on one side of the hody of the apparatus, having in it a spindle, equal portions of which have right-and-left screw-threadscut anthem. lThe spindle passes through two pieces-of metal ot'a quadrantal form, in which a set of nozzles of'various' sizes is xed, the use of the right and left-hand screw beingthat when it is required Vto shift the qua-drautal piece, by turning the spindle in one direction these f pieces are released from the actual nozzle and throat of thev instrument, so that it can be turned on its centre,` until a set of holes, which willgive the required fded, is brought round, when the' spindle is reversed, and the quadrantal pieces are again brought close against the' nozzle and throat, in manner jsuitable for working. Besides the lust-mentioned arrangement,'a cock may 'be madri to-revolve, having holesfor nozzles mede in it ofv different sizes, to correspond with variations of feed, the holes or nozzles being turned round to suit the feed required. The" improved arrangements just referred tolwill be clearly understood from' the description otv the drawings, sheets .2 and 3,i'mmediately following. Description of Drawings, 'Sheets' 2 and 3. v t On Sheet 2, Figure 1, is a longitudinal sectionof the improved injecting and ejecting apparatus. p Figure 2 is a similar section of another form of the apparatus. I t In iig.,y 1 the lower` part of the body vof the instrument lis composed of three vprincipal pieces, AA1 A?, which are screwed together in the'manner shown. The upper end ofthis part of theinstrument is furnished with l a iianeh B, which carries the` four pillars G, two only of 'which are -seen at iig. 1. The four pillars C carry at their upper end the lanch D, and from the upperfandlowe'r sides of this tlanch the tubular `pieces E and E I project, the upper one having-a square threaded scrcwi'ormed thereon, as seen in the figure. xehandwheel F, for regula-ting the opening of the water nozzles, has QT screw-thread cut in it to correspond with that on the pubular piece E', und the boss ofthe wheel projects below to receive a Hauch, Gr, which is kept in place on they hess by means ot'. the collar H. From' this ilaneh G, 'two pillars, I, pass downwards, throgh holes inthe ilnn'ch D, andare thence continued on to the Hauch K, which carries the tubular piece L and nozzle L', by means of which the supply of water is regulated. As it is necessary that the jontbetween the tubular piece L and the l external body part A, should be air-tight, a stuffing-box is vprovided at the upper end of the piece A, and n f gland M, having holes, through which the pillars Cpass, keeps the packing tightl therein, the pressure ou the A gland lieing regulated by the nuts on the screu'edfportions of the pillars. -By means of this arrangement, the great difficulty always hithcrto'experienced in keeping tight the bottom packing ofl the tube carrying the water Y 3 Y nozzles is'obviated, as the packing in the stulhngbox can at any time he instantly tightened' up, or, if required, .new packing may be rapidly filled in, so that the inaccuracies of the working oi`-the instrument on account of g l a leaky joint at thispart are prevented, audits continuous action is now rendered certain'for any length of 4rime. It is absolutely necessary, when apparatus of this class is employed for lifting liquids from great depths, that the joint around the -steam passage E, form'ed by the stuiiing-bonand glandfM, iig. 1, should be maintained L perfectly air-tight, otherwise the lifting elciency of the instrument isnuch impaired by air passing in around the steam passage, and mixing with the water as it 1passes towards the nozzlesL, through the passage V, and i as the apparatus, as arranged in the several modifications comprised under this invention, is morel especially designed with thevicw oi' lifting liquids from 1nu'eli.gi'euter depths than hitherto, the opening up of the outside body parts oF't'he'finstrunient s0 that the packing around the steam passage maybe instantly adjusted vsnhout the necessity of talcing nypartof the instrumentasunder, is'considered the special feature and main improvement, as comprised under these present Letters Patent. v 1 t is to heunderstood that the remarks in this immedi-' -ately preceding clause apply equally to the three succeeding'modicutionshereinaftcr specified. `The admission, l of steam through the nozzles is,`inthis'modication, regu-lated in theusual manner by means of-a central spindle I Ol,- the screwed .part ot' which passes throughs. holc correspondinglycutin the inner projection Ozof tlie tubes n E E. The steam inletis'indicated by the dtted `circular lines W. Y is the -watcr inlet," and X the overllow;

Y being the valveby which dire-ot communication with the boiler-is prcveptdwhen thc instrument isnotV i feeding. Y l l' i 'l In Figure 2, sheet 2, thelgcner a l arrangement ismuch the saluons `that described and shown inreferenc'e'to Athe preceding modification, and tnesame figures or letters of reference` nrerixedtmparts corresponding to 4those in iig. 1, and therefore need not be further referred to. 'l

The chief pcculiarity in this second modification consists in so ys irranging the instrnmentthnt the regulating whcel'F, together-with the screwl arrangement,l -ianch G, and pillars 1", Iconstitutingthe gear v'by which -the i l admission of water-is'regulated, arlsdispcnsed with. A three-sided `lanch, M, is formed on the Ytubular piece,

ig.'2; and the part A` of the body of tho instrument is provided with n, corresponding tlanch';4 the two parts aro connectcdptogethcr' by studs C. A stuiing-boxV isl formed in 'the upper part of the tubularv piece'A, and the gland N sccnres'the packing therein, forming a'perfcctly tight joint around the picco 0, being pressed down by nuts in the usual' manner'. The piece O, carrying the water rnozzlel), is regulated by mcausotltho screw P, which turns in a lug, P', cast on one side ot' thogpiecqo. A etching-bon is also. formed at the upper part of the piece O, by'which n. perfect joint is maintained between it andthe inner tubular lpiece O', through which'. thc steam passes on to the nozzles. The central spindle bywhifeh the admission of steam is regulated,` is

adjusted in the usual manner hymen-ns of' thescre'ir R, the spindle-passingthrough a stuling-box, S, and sur u mounted by a' hand-rvheel, T,-by which it is actuated. The advantages resulting from this second modication are similar to those previously described andreferrcd to as belonging to the lfirst arrnngement.V i

On sheet 3, Figure 1, is a longitudinal lsection of another modification of my invention. 1n this arrangement the lower part of the instrumentfilil also madeof-three parts, A A and Az, as in the rst modification referred to, lon^`slxeet of the drawings,and l'the .upper part, 'Ayisfurnished witha anch for carrying the 'pillars B, Vby which the upper and lower ex'torionrjmn-in parts -t the instrument' arel connected. In order` to obtain easy access to the packingy of thezinner tube'jC, with' thc view of rendering the joints betweeny it and `the outer parts of the instrument morcirm and secure, stufing-boxcs D and 'D' are formed in the upper and lower'ij exterior portions, end 'glands E and E', are respectively proyidcd to keep the packing tight, the pillars B'havng screw-threads butV on them, and prorid'ed n'ithhutspas showniul the igure,' by which the tightnessof thcjoints lis regulated.V .By moans of thismode ofv arranging theseparts of the instrument, the packing around the C is easily accessible, so that the' joints may he continuously maintained tight, and'theadmission of thel nis-with the water asit' is drawn' or forced in through the supply passageF, as well as theLcscape of steam around the tube Q, as this is let infor-.producing the feeding action, is prevented. l

, Figure 2 shows irr `horizontal section the passages in thc tube by. which the steam is admitted on its wayto the nozzles. For regulating the supply of water, the .tuhe C is furnished with a hand-wheel, F, by which the tube/is turned i'n its screw-bearing, G, formed in the upper main portion. of the instrument. The central-spindle H, for regulating the flow of steam through thev nozzles, is also operated in manner simlur'to that shown and described in reference Vto thcltn'oprevious modifications, and as all" tho other-. parts of the apparatus not described in-refcrcnco to this modification are similar to those shown in the two previous modi- I licatons, and are common to apparatus of this class, it is notgconsidered inl the present case necessary to refer totliern.` If,

Figure 3, sheet 3, represents 'another modication'ot' the 1 ipparatus. v In this' case the general nrrangef ment is much the same as that shown in themodication immediately preceding, with the exception' that in place of regulating thc admission of water by means of a hand-wheel on thc tube C, in this case it is regulated hy the scrcwI passing through the upper and lower ilanchesAzand A, respectively; a collar, K, being placed'on its lower end to vprevent its lposition with respect to these iianches' being altered." A lug, Il, is cast on 'one side of 4the tubular piece C, and the scrcwI passes. through a. corresponding screw-threaded hole cut therein, so that as the screw I is turned either in a right or left-hand direction the-tube C andthe Water nozzles L are accordinglyv raised or lowelgd. ,In both gurcs 1` and 3, sheet 3, M is the steam nozzle, vhl 'the unterv nozzle, and O-thej '5u o'verowl, As fhown in allthe modications on sheets 2 and 3, I prefer to employ the hollow no zzles, described in reference .to sheetl of the accompanying drawings. The nozzle is constructed by means of the cavity in theouter piece a being mede of larger diameter 'than the outerdianieter of the inner piece b, so that vn. space shown by the darkly shadedparts in iigs. 1.and 2, sheet2, and tige. 1 and', sheet 3,.is left'between them g this gf space may be-allowedto remain; us an'air space, or may be lled with now-conducting material, as' hereinbefore described in reference to sheet v1 of the drawings. l j

At Figure 4, sheet 3, isshown one mode of arranging and applying a'varible'setjof nozzles.: In this arrangement a parallel cylindrical opening is made right through the body ofthe instrument, at that part I wherein the nozzles c and throatd o f lthe instrument Vare situated. A'tuhular piece A, having a set of nozzles, 1`

d, of various sizes, and throat pieces b, corresponding to them, are fixed on opposite sides of thietubularpieca und as the 'ends of the actual nozzles c andf throat d are constructed to correspond und fit against the exterior surface ofthe tubular piece A, any one-ei` the y variousV nozzles and throats, situated in`tbis piece A, may at once be applied by sliding the picco A through opening until the nozzle Ian rout necessary foi'- producing 4 the. required feed are brought lntopositionto enable the instrument to work.' Instead' of constructing the 'variable nozzles, and using the lmode of applying them, as glionnnt fig. 1 1,

sheet 2, they lmay be constructed of two quadrantal or circularly formed pieces, as described in angca'rlier part l of this specification. What I consider specially as my invention at this point is the application of a variable set of nozzles and throats to apparatus o't the class to which these present Letters Patent refer.

l Claims. v 1. The combination, with the steam and water. nozzles of an injecter, of a tixed'casingvcontaining any nonvconducting substance, interposed between the said nozzies, as herein shown andspeeied.-

2. The arrangement of an adjustable artightpalcing between the steam and water .iniets,`as herein before described.

3. The arrangement and construction of apparatus for injecting or ejecting fluids and liquids, in' which a double set of nozzles vis employed'in combination with aninjecting or Water nozzle, so as toform annular jets of steam and water, as hereinbefore described. I I l l 4. The arrangement and construction of apparatus for injecting or ejeeting uids of different temperatures, whether in immediate contact or not with the steam nozzle, as hereinbefore described. f v 5. The combination of the exterior main portions of the instrument, with the pillarsv or studs, or equivalentl devices, for'connecting the same under the arrangement herein specified, so that they smiling-boxes, joints,

' and packing are rendered accessible, and capable ofbeing readily adjusted, as set forth.

6. The application of a set ot' variable nozzlcsand throats to apparatus of the kind hereinbefore described,

in the manner specified. I l

In testimony whereof I have signed my naine to this specification in the presencoof two subscribing witnesses.'

` ANDREW BARCLAY.

Witnesses:

. ST. Jon-N VINCENT.

d. BROWN.

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