US112283A - Improvement in safety-plug attachments to steam-boilers - Google Patents

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N.PETERS. PHOTO-LITHOGRAPMER. WASHINGTON. D C.

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@time @time A' o all (whom /itl'm 1) cm ehusetts, and J QHN OQGHAIWAN, of Gembrhlgeport, in the county and@ State aforesaid, have invented `un p fulhfcleallyiend exact description, reference being hed "gmakng pertothisspeciy asidefelcvationof ourfappm'otus. f

Figure 2 is eliseeti through aportionofasteztm- `lloilerllutving.ournppe` Musipplied thereto. 'lheivater inQfsteum-boilers is, frequently, through fel .low 'the desired, level, ieets to becomeoverted `state tlieyynre liable p ntaLet ofthe water which lsgpunipedih" ltoyl'esu'ppl` he boiler. After thishus been 41repeal-ted"ai. "umher of'times ythe bersof. theirou .become weakenediandtthe `strength of the` crown und 'luefsh'eetsfpis tlfus 'seriouslyiinpaiired, so that, after l been weakened from thiscnnse, an timesoccur, even when tliejirebox or furnace, the v ipe `beingclosed bya. plugor ydiskot fusible itilloy, y yill nieltata given temanditliepipefib gfqconnected with un` euxp pefconiinuuic. 'ngiwith supply of waiter, `whereby,when`tl1e`watt heboiler descends below heldesired level, steil,` dmitted to the pipe und heiiisible plug melted whenf thefwuterl is forced through Ithe 'pipe "into" th rbox' or furnace and the tingnished,"whiclrtlr ",etfectually prevents `the pmge trough `this uled, its lieretoiorfbypuinpihg. water into the boiler. y Tolenblefothers skilledm inwthfe art to undersntnd 4nd usebur inventiomlw l proceed to describejthe `ann`e"`ninlwhieh we her iedit out. i

thesnid drawingi- E f "I Ai representslflsteai @,{theflee which he al pipel is closedl by a; plug l1 fuse `on steen:` coming Iville`,;1`in"thehcounty ofgMid'dlesiex Itud Stute'fof Mussel "utoinittie` Appal,rattilsfor` Extinguishing the A Eire i iu `Stealnoiler:Eux-nocesl when `the wutcr in` the boiler?- 'faillslbelowthe desired level,of which the `ibllonrin'gs.`

` theobjeet of our ists in pipe lending freine point t-"would not be sttieyforv ter` should Staind within ru; `would not be sfe for-the'` Thngnthef que, `ofrivi with' um lmet, pit- 1870. l

1B, 5 which extends down? "Southmost, AND'JOHN c. CHAPMAN, or oAMRiDGE- Pom, MASSACHUSETTS:

auxiliary pipe, D, which extends down und enters the -boilrztt a-pohitwbich will insure its boing ulwztys in 'communication with a, supply of witter.

When the water is atits proper level within the boilerit is prevented, by the plug c, from passing through the pipe B to the fire-box; but should the walter be allowed, through carelessness, todescend "below the lerel'ofthe end 5 ot'. the pipe B, the steum will'enter thisrpipe and melt the plug c, whenlt-he water from the boiler will be forced up through the pipe'D into the pipe B, by reason of the pressure of the steam'upon the body of thelwuter inthe boiler being greaterthun the pressure of the ste'zunpussing v through the pipe vByttnd aided,`.too, by the pussing steam creittinga. partiel vzicunm above the niouthot the pipe-D, andthencethrough the pipe B into the fire-box or furnace' C, tliis immediately extinguishing the iire, and notifying thelpersen in chui-ge that tile*` water has descended below its properflevel.

The above-described automatic appurutus is beyond' the control of the engineer, and the owner of a. boiler can 4thus feel assured tliatthe're will be no liability of its'exploding or becoming injured through the neglect ,or carelessness of the'engineer or person 1n ehm-ge, us, "ontheeventof the water being allowed to descend y below the proper level, it will be inpos'sible'n' theexposed yportions of the boiler to become overheuted, u.; the fire will be extinguished before this cnn occur, und

consequently no 4dumttge cain result from the pumping f iu oflwater `to resupply the boiler, us hns frequently` beentbe ense heretofore.

Instead of the auxiliary pipeD communicuting with vthe interior of the boiler, it may conununicute with zt tank or supply of. water outside the boiler; but this:` .auxiliary pipe must connect with the pipe B at soniej y point between its extremity 5 and the fusible lplug c, which muy be placed ut any .desiredV pointV within the y l `Viiutt we claim as ourinveution, und desire to secure by Letters Pgttent, is-

:The pipe B, 'leading `from the interior offthe boiler i ANDREW ROBES.` JOHN G CrL-XPMAN;

` `Witnesses:

- P. E.'1usoHn;mcnER,

Y L, E. BATcHuLLER.

Connected witlvfthe pipe B, outside `the boiler, is :m

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