US182424A - Improvement in means for utilizing exhaust steam - Google Patents

Description

4 Sheets-Sheen; I; DOWNES, I MEANS FOR UTILIZING EXHAUST STEAM.

Patented Sept. 19,1876.

Y 4 Sheets-Sheet 2. J. DOWNES.

MEANS FOR UTILIZINGEXHAUST STEAM. No.18Z,4Z4. Patented Sept. 1&7,v 1876.-

N, PETERS. PHDTO'LKTHOGRAPHFJZ, WASHINGTON. D c.

I SheetsSheet 3. J. DOWNES.

MEANS FOR UTILIZING EXHAUST STEAM. No. 182,424, Patented Sept. 19, 1876.

MPETERS. PNOTO-LITHOGRAPHER, WASHINGTON. D C.

4 Sheets-Sheet 4.

J. DOWNES. MEANS FOR UTILIZING EXHAUST STEAM. No;18Z,4Z4. Patented Sept. 19, 1876.

* adam V v TED-STATES JOHN nowm 'ot H ANDsVvoRT H, ErieLAND. l

' IMPROVEMENT INMEANs' Eon urluzmje (EXHAUST s i'E'AM.

Specification forming part of Letters Patent No. 82,424, datedSeptember 19,1876; application filed r July 1,1876.

To all whom it may concern: r

Be it known thatI, JOHN DowNEs,.of Handsworthfln the county of Stafi'ord, England, merchant, have invented new. and useful Improvements in Locomotive'andStationary Steam-Engines, which improvements are fully set forth in the. following specification, reference" being had to the accompanying drawings.

My invention consistsof the construction andcombinations or arrangements of parts, hereinafter, described, of locomptive .and stationary steam-engines, the said construction and combinations of parts having for theiriobject the condensing and utilizing of the exhaust steam'of the said engines, andmaking them noiseless and smokeless, or nearly so, and theeconomizing of fuel and Water.-

. My improvements are especially applicable to locomotive-engines for common-.roadsand tramways, but may also be applied tostationar-y andmarine steam-engines.

V i In carrying my invention into effect, 1 make the outlet-port for the passage of the exhaust steam from the cylinder considerablylarger than the inlet-port, and I connect the said inlet-port with a tank or ranged ashereinafter described, and convey the said exhaust steam into the saidv tank, and from the said tank into the boiler. This tank is, by preference,vlined with sponge, cork, india-rubber, or other material which will rapidly: condense the. exhaust steam, as wen as deaden the noise.

The tank may be divided into compartments, or sections, the

said compartments being in communication withone another. The water with which the boiler of the. engine. is fed is heated 'by the said exhauststeam before it issupplied by the 1 pumpor injector to, the boilers The tank is furnished with arivalve topermit of'the-escape of exhaust steam when. necessary. v i ,From either compartment of the tank described a pipe passes to the fire-hole-ofthe boiler-furnace, the said pipe being. furnished with one or more jets. and regulators... By.

means of-the said pipe and its jet or;- jets'and regulators th eexh'aust steamis conveyed from the tank ortanksinto the furnace in the form .oi'a spray,and tends by its action .to increase .thedraftand suppress smoke... I also in a series of pipes, ar-- similar way-convey the exhaust steam into the funnel of the engine for creating a draft.

gines of tramway-carsthereis no noise of escaping steam, and the'frighteningof horses isavoided.-,:

Havingexplained the nature of-my invention,l will proceed to describe, with reference to the accompanying drawings, the manner in which the same is to be performed.

Figure 1 represents in side elevation, Fig. 2 in end elevation, and Fig. 3 in transverse vertical section, a locomotive steam-engine provided with my improvements. Fig. trepresents a portion of the same in longitudinal vertical section. r 1:

The same letters of reference indicate the same parts in the several figures of the draw- Around thevupper side of the'exterior-of the boilern of the locomotivesteam-engine I placea tank or secondary boiler, b, in to which tank the exhaust steam from the steam-cylim der is conveyed by means of pipes connected with the outlet-ports 10f the said cylinders,

the said outlet-ports beingmadeconsiderably larger thanthe inlet-ports. One of these pipes is represented in Fig; 1, and'is marked 0, the upper end 0t" the saidpipe c dippinginto. the water with which thetankt'is partly filled.-;..

In the drawing, the tank 'b consistsof a singlechamber, but the said tank may be di Ivided .intocompartments or sections commu-j nic'ating itheach other, and'thefsaid tank may belin'edv with sponge or other material which..wi1l rapidly condense' the exhaust.

steam, and deaden the noise of .theentering steam; The exhaust'steam passed into the tank b bythe pipes c i's-ipartly condensed therein, .Btlld the water. in the said "tankuis brought to aboilingor nearly b'oilingheat;

I The-heated water: in the tan-kb maybe'fe d" totheboiler. a by a pump, or: by an injector; oruthe said water, as wellas the un'condensed exhaust steam: in: the; tank may fed to the boiler aby an'injectorin the following manner 0n theend :of :thei-tank b is adomefd,

from the side of which a pipe, 6, passes to the bottom of the boiler 00, a valve or valves, openin g' inwar'dgbein'g situated atthat end ofthe pipe and through the valve or valves in its'bottom' end into the boiler a. i For the purpose of promoting the draft through the-furnace Lincreasin-g the com-bustion of the fuel therein, and :preventing the formationof smoke," I convey a poi-'tionof the exhaust steam from the tank- 11 to'the saidzfuiw nace i'by means-ofrthe pipe 70 passing to the under sideof the boiler The-"lower end of the said pipe'k isfurnished' Witha nozzle=piecej l, which opens-into the-pipe m; passingrthre h the ash-pit n of the furnace,or through the furnace itself." This pipe on is-provided with branch pipes 19 p,-eachof which has at itsend a jet,',- q;,-situated withi nthe belt-mouth pipeu, projecting. into the furnace i. The exhaust steam conveyed to, the pipes to MIDTXGS' with the air entering the said pipes, an'd the mix tureof exhaust steam andair passes-into the furnace Theinner ends of the bell-mouth pipes-a u are flattened out; and provided with 811138, so as to inject the mixture of exhaust steam and air into thefurnacein the form of D The jet q and the bell-mouth pipe u may be dispensed with,; and the pipe p may deliver the exhaust steam direct-into the a-shpit-orfire-box.

The exhaust stea-mvissomewhat superheatedinits passage through the pipe-m, which is heated by the-i urnacei. The quantity of exhaust steam passing-to the furnace through the pipes Z0, m 13; aindjetsq, maybe regulated by the .-stop-co ckw ,1 orthe. exhaust steam may bebrought direct from the dome'f, over the top of the tank I) to thebell'mouthpipes an. The exhaust jsteam alone may be conveyed-to. the bellmouth pipes ;u u in the man ner described, or a mixture of exhaust steam I and heatedam- 111 the latter casethe-pipe' m is connected to the pipe 7,;which passes-Eto-the smoke-box It, the said '-pi;pe a" term-inating'in acoil, 3-, fixed in. the said smoke-box; -V'I(S'ee Fig-. 1;) The end ofthis coil sisopen'rtofth-e ai-rr; Theair circulaztin g through the coil '8 -b'ecomes'=' -heatedthereby -and m-ixi-ng with the exhaust I steam supplied by the :BUZZlG-iil, enters the furnace by the' jets q;' -;Thedraft-through the furnace and; the combust-ion" of'thef fuel. :thereim are thereby promoted,;andismok; prevented." The-draft of the furnace may alsoibe"promoted by con'veyingthe-exhaust, steam. from the a v may bejapplied to' 'locoinotiy'eshn"Wh In. add tlong.to eonveymgthe exhaust steamy" or a'imxture of exhaust steam and heated air,"

to the front of the furnace t, one or more pipes may convey the exhaust steam through the bottomof the furnace,to blow vertically into the ash-pit, and'through the bars of the grate or the exhaust steam may be conveyed to the furnace 41 through the back thereof. By passing theexhau'srsteam into the fire-box it becomes so' heated that on=its escape into the atmosphere it is not condensed,; and is,co nsequentl-y, invisible. i i

By means of a pipe, 9 connected with the steam-dome g, surplus steam may be conveyed to the furnace to deaden the fire a nd prevent,

noise of escaping steam from the the safetyvalve when the engine is standing.

Instead of employing a tank around the upper part of the boiler for condensing the exhauststeam, one or more tanks'ferthe exhaust steam may-be: situated at the" side of sidesof and belowthe b'oi'ler; the said 'exhausttank or tanksibein g used in coinbi nation with a coldwater tank orpipes'aroundt'he boiler;

This modi'fi'cation 'of my invent on is illu's trated in longitudinal "section i=n Fi'g.5, and' I cross-s'ection-inFig. 6,-Where 1 1 are the' tanks' for theexhaust steam at the sidesof andihea low the boiler'a; and 2: is the-tank around the boiler," serving' as ac'old-water tank. 3'isthe exhaust-steampipe'from the 'cyflinderin com -m-unication:with-the tai'ik la Thepi'p'e 3opensinto the-'- tank 1 by means of the-sma1l"-cham'- her 4, the u pper'part ofwhich perforated with smallholes-,- forming'a rose; Betweenthec'old-water'tank 2 am the chamberiisa' valvey 5'. Theex-hauststeam passing through the pipe3-'from"the cylinder is' 'mainl'y condensedby means' of the spray or" jj'etsof cold Water delivered through the perforated top of the-'- chamber-4 from thecol d -wa'ter'tankf21- The valve 51s worked by rodsand leversfrorrt the foot-plank of the 'eu'gine; By'-means" 'of they said rod sand levers the valve 5may be opened and closed at ple'z'tsure. When "the engine is stationary theval ve fi is closed, "and cold -wa f ter. is prevented from passingto'the condens 1 ing-tank lgbut on} starting theengijnethe 'saidvalve-5- is opened when the greater part A of thege'xa'ust ste'amfrom the'cylinder is -co'nf densed by the cold water meeting ition its? 'pa'ssage 'tO-the tank 1 Thehot'water -inthei I tanks 1-1: is- 'pumped therefrom by pumps" worked? from 'eccentricson the: axis'of the -,drtving-wheels of theen gine or otherwise." The framing of the-engin'emay lee-utilized so ia-s tocarry theexhausttanks; f The exhaust steam in'th'e tan-ks' 1 11 may be conveyed tothewfront; back, and pattern of locomotive by an arrange?" e-as that a.

toner is situate irertlcally instead fof horizon i tally-,- and: the said improvements are-ialso,

plicable to locomotive steam-engines for tramway's, and to marine and stationary steam-engines.

In applying the said improvements to locomotive steam-engines for tramways and to marine and stationary steam-engines, I arrange or combine the parts constituting my invention, substantially in the manner described and illustrated, with respect to a locomotive steam-engine, suchchanges only being adopted as are necessary to adapt my improvements to the particular steam-engine with which they are to be used.

Having now described the nature of my invention, and the manner in which the same is to be performed, I wish it to be understood that I do not limit myself to the precise details herein described and illustrated, as the same may be varied without departing from the nature of my invention; but

I claim as my invention of improvements in locomotive and stationary steam-engines-e 1. The combination, substantially as described, of the feed-water tank,'the exhaustpipes leading thereto, and the exhaust-steam blast-pipe, through which the surplus exhaust steam in said tank is conveyed to the-fire-box or furnace, as and for the purposes set forth;

2. The combination, substantially as set forth, of the feedwater tank, the exhauststeam pipe or pipes leading thereto, and the blast and boiler feed connections leading from said tank, whereby the exhaust steam in the said tank is conveyed both to the fire-box or furnace, and, together with the feed-water, to the boiler, substantially as described.

3. The combination and arrangement, substantially as set forth, of the feed-water tank,

JOHN DOWNES.

Witnesses:

GEORGE SHAW, HENRY SKERRETT,

Of 37 Temple Street, Birmingham.

Images