USRE11370E - milton - Google Patents

Description

J. MILTON. LoGoMoTIVE BOILBR ETIENNE.

L .ru e e h. 4. s .T.. nu nu h s 2 Reissued Oct. 3, 1893.

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2 Sheets-Sheet 2)'. J MILT 0 N.

LOGOMOTIVB BOILBR PURNAGB. No. 11,370. Reissued Oct. 3, 1893.

f 'UNITED STAT-Es.

.IToHNj'MILTom .oF-"ALEXANDRIA, v1Re1N1A,AssIGN0R,fBY umu'c'r AND; I i

VIRGINIA.

L oCoM'o'Tivi-:esousn Flinn/ien.

' SPECIFICATION forming pmef Reissuaneers raten-t 'na- 11,370. daten ootbe e, 18193.),

' originalita.soansaaateaiugm15.1893. Application fantino@ enligne 29.1393; siglnmagszajj B e it known that I, JOHN'MILfromof Aleiandria, in the countyof Alexandria and State 'of-Virginia., have inventada new 'and useful `-'ppes'd isposed in linclined positionas a partition just above the fire, and' protected from injurious burning by subjacent water beds, orby jackets of refractory x 11\.teria.l.4

My :present invention' comprises .an improved-'means for protecting the'air' pipes' without interfering with the access to the boiler tubes; and in an improved .meansfor- -.-glutematically'supplying air under pressure "tothe Vair pipes both while the .locomotive isin progress and standingstill, all asher'ein after fully described..

- .Ofja locomotive boiler furnace. Fig; 2 is a 4horizontal`.`section ol the same' through the Rigorous mentaal longitudinal Section ".re box. Fig.3 is ajcross sectional detail-'of .the re brick protection 'forthe air pipes'.

inclined-water pipes disposed in the firezbox just "above Athe fire with' their ends next .to-

3S -higher ends .of these pipes are connected'to- In `fthe drawings Agrepreseuts a series of the door higher than the opposit'eends.-` :The

get hexy' and lat B, YFig'. 1, communicatel with the -water legsf'at thesides of the re' box, 'and at their-lower en'ds'commuicate with through blow olf valve hereinafterA described. These'ivater pipes-are-intended to havev a continuous circulation Vof water through them to keepthern-cool and prevent .4s` -i'ng thejgenerationo steam. These water burning, and for the purpose also o f increasvpipes .fo r.m a 'support for the air pipes I, which larefhc'iused between two layers of fire b -rickl G'and I-I. 'lheseltwo layers of brick have grooves formed'in their adjacent faces to re.v

A ce'iveth'e perforated air pipesgeaclio'fwhich pipes has a row ofperforationson eachside l Bothlayer's of -ire4 brick have vertical open-.1

a portiouof the lire curreiitgtheal, and. greaterpor'fion' :of 'the hotiggges'pasngu p. be?

-tween the rows and outsideofthflir-bricksl 'r The air issuing from the-.ai

through-theperforations upoujone s'ille', and? commingle with 'and' completely consume the smokejand' `gasesarising-`between theows v of .the opposite 'orxinne'r `sidesofthi airpipwesf ther-air is 4directed into the' 'gasesari singf through the opening's-c, and forlthis' purpose I.6 the r'e brcksfhave formed ontheirinner faces-tapering' depressions (l 'that lead the air from theppesnto tlieopenings c.v

' .To 'facilitate cisl jdgi'ng'ashcs; from the top 'of the fire bricks-their 'upper lsides a're bev- '79 eled each 'way 'from the' middleline, andfthe lowerlayers of-briek=l1ave shoulders ce that? lie between the water pipes and prevent thfeln ',t'roni-being displaced laterally=1 These 'bricks are simply laid upon the lvs'ater pipe, end are conveniently and quickly detachable,v so asv` 'to permit access to th tubes'of the boiler for inspecting and 'repairing'the same." These )fire bricks areeasilyre'placodin part or whole when broken" or .worn' o ut, l andthey afford a protection to the' air pipe ag'ainst't'heintensey heatwithin the fire box',` and also serve 'to deflect the air in thin sheets through 'evel "'y.

pm of the rising Smoke' and gases tp-,- fectly consume the same. .i

The airmbesrwhicn supply tie-'are box receive air throughcross pipes J frorn'pip'es L'terminati'ng at theirjfront ends 'in tunnels conveniently placed in the frontpart of the A locomotive and ladapted to create a forced air lthefforced. feed' ceases when the v.loconarrative,

stops, I provide special means forcoutinuii'g' the airblast in an automatic man'ner'asfollows: Pisa box casing or .an enlargedpart of pipe L, having` in its bottom iamop'ening o vat its outer en'dtliat-plays overftliiiori. of;

. 9' 4feed by themovementof the locomotive: """As u lip e-and closes the opening o when valve M -is down. i. This valve is fulcrumed at u andha's a lever extension on the opposite side of its fulcrum that'is connected by a link with 5 a lever arm n on theend of the axis 'cfa but-- terfiy valve m in a steam boiler pipe N. The steampipe runs from the boiler and terminates in a nozzle within the casting P behind the valvelM.` The outer end of the lever arm ro 'n is provided with a connterweight r which slightly overbalances the weight of -valve M and holds it shut and butterfly valve m open.

The action of these parts isl as follows: Then theA locomotive is in motion the air x driven in the funnels K f orces down-the valve M, throwingit wide open, closing with lip v, the orifice 0, and lifting the arm n, and closingthe steam valve'. Air is now being .supf

plied ina forced feed to the-funnel by the zo movement ofthe locomotive. When the locomotive stops, the -ai'rvpressure on valve 'M being removed, counterweight-r drops down and closes valve M; opens air inlet O,and`

also opens thev steam valve m; Steam now z 5 flows through nozzle W, andi sucking air Ain at O, suppliesa forced feed of air j ust so long as the locomotive is stationary. When the locomotivestarts again, the impact of air on' valve .Mopeus it again,I the'steam supply is v 3o cut off, and airis fed by the mere passage `of,

the locomotive again.` In this way thegdevice is made to work automatically, the forced airfced being continuously maintained in a v perfectly automatic'"manner, no matter 3 5 whether the locomotive ismoving or stationary. In casefthere is too strong a draft in the pipe L, as might occur with a head wind, a relief valves, orescape damper, may be provided to allow the escape of a'nydesired 4o portion of the blast.

As amodification of my invention, instead of using steam from pipe N, I may connect this pipe N to the airreservoir that supplies the brakes, andy allow a blast of air to proceed directly therefrom without the indue tion of air by `the steam jet. ,i v

It will be understood that although de# scribed as applicable to locomotive boiler f urnaces, the several features of my invention 5o are net limited thereto, but may, be applied to marineor other forms o f boilers.,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, 'is-'v l 1. Tlxewater `pipes AA communicating with the boiler space and arranged in pairs-between the gratesurface and the tlues, 'in comi bination with an air delivery grating mounted upon said water pipes and provided with.

6e shoulders e adapted to lie between the pairs of supporting water p'ipes, substantially as and for the purpose set forth.

delivered mounted upon water ppes ar.`

ranged in` successive pairs so as to provide vertical-spaces between the air pipes, said air pipes having-'their upper surfaces inclined to permit thefall of ashes, and provided with shoulders e to preveutlateral displacement, .7

`substemtiallyas described.

3. The water. pipes A, A' communicating with the water space, and arranged in sepa,- rate sets or conplets,as described', to furnish supports for the series o f 'air .distributing pipes, and td secnrevertical spaces for the draft and productsv of combustion, as hereinbefore set forth. 1,'

- 4.v The combination .ina steam boiler furf nace, of a set .of water'pipes arrangedin the fire box above the lire and having communi 8o cation at both ends-withl the water space of the boiler,l two layers o f detachable tire brick having cavities in'theiradjacent -faces and supported'npon the water pipes, and a set of perforated air .pipes arranged between the` and described. z

5. The combination` in a furnace,';of the supporting water' pipes A, the two. layers of two layers of .fire brick, substantially'as shown re brick H G having central opening'c and 9o seats or recesses for the air` pipes upon' each side of the layers of. tire. brick on each sdefof Vthe opening, substantially as l.shown and desupporting.waterl pipes A, -the -two' layers of ,tire brickH G'havingcentral openings, shoulders e, and cavities or recesses in 'their adjarec' cent faces, .and the perforatedairpipes I ar'. rangedfbetween the lire brick on each side of 7 the central opening, substantiallyasshown and described.

7. The combination with alocomctivefurfm5A nace; of Ean lair feeding .device consisting of tunnels and pipes arranged tocreate a` forced .draft by the motion of the locomotiva-and a compound air and sfeanrinjecton valve arranged in the -pipe-that leads the air tothe ne furnace, the said air and steam valve being connected together 4 and arranged. to automaticallyoperate in analternate-mauner, the Y opening of l the air. val-ve from .the motion. of

thelocomotive serving to close-'the steam U5 valve, and the steanizvalve being. arranged to .open and the air' valvc to close when the locomotive stands still,- substantially-as shown and described.` l Y 8. The air feeding device consisting of a :ze

pipe havi'nga funnel at its forward end, a

casing -P with lip e` and opening'o, the air valve M .havinglip .v,the steam pipes N with injector n'czzle w and buttery valve m, and

crank arm n weight r, and link t connecting rz 5 the steam valve to the air valve for alternate action, substantiallyas shown and described. In testimony whereof Ilaix mysiguature in presence of two witnesses. 2. The clay pipes through .which the air-is JNO. MILTON.

.Witnesses JOHN J.;WIL1t1:A1 r rH,` N. CURTIS LAMMoND. a

id opening, andtheai'r pipes I pr' 4foratedy u eachside-and arranged Abetween

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