THE JOURNAL OF THE BOUIETY OF CHENICAL rNDU8TRY. [AprilSO.lEWL

Keywords: IK Siiiall COLEMAS, A.It.C.SC., P.I.C

Tho ii11:ncs iii ihlic~ nre tliasc 01 incii!bcrj or Comniitteo w h o n-iiro at Iic end of the cumnt Swion. Tho following Imvc ~M I I clcctcd.to Ill1 1110 vnenncirs. rind. will tnko olnm in Julv ncxt :-~'icr-~h7lr'ilrnrr: 17. C l o w ~. 

portion of encli of tho three picces of ~~iliccliiy forniiug the triirtiglo. I n tlijs wily coutiict tukcu pliico in tlirco poiuls only; niitl thus lenvcs nniplc wpuce for tliu flume to plny upon tlic sarfiicc exposed. The rcsult is tlint tlioroiigli contnct bctnrcn the flninc iind the vessel to be lientcil is wciirccl. Tlic cffcct of tliia iiuprovcmcnt is to lcesen tho tiinc of Iientiiig, iiiid iilso to incrcnse the tempcrutiirc ittiiiniblc froni i t givcii flniiic. 
l'lic follo\viiig cxpcriinciits sliow tlic ntlvniitngcs of tlic triniiglcs. l'lic h n c iiscd in tliesc cxpcrinici~ts wns tliiit rrom n Ihiiiscn I)uriicr, thc gns s~ipply of wliicli IVIM rcgulntctl by iiieniis of n Stott's governor. l % c CIIAIIIMAS csliiliitcd 11 wcltlcJ liliitiiiuui tririiiglc which I10 Iind usctl for iii:iiiy yciira. 110 foiiutl it iiii iidvwitngo to be iible to iiltcr tlic ciliiqic of tlic triniiglc to siiit dilrcrciit cinctl criicililcs. l'licro w i s Iih~llJ8 11 flight ndlicsioii bctwccii tho triiiiiglc i i i i d tho crucible iit t i rctl lietit, but cvcii iiflcr Iicntiiig iii tlic Ilowpipc flnuio no trniirfcrciico of iuctirl took pliieu. It I V I I ~, Iio\vcvcr, iitlvisiililo to iillow tho triiiiiglc i i i i t l criicililc to cool down bclow rctliiess licforu ticpiirntiiig tliciii ; II tilight toiicli wiis tlieii niillicictit. hIr. Colciiiiiii's triiiiiglc w i s it grciit iiiprorcuicnt 011 tho ordiiiiiry cliiy triniigle. 

Fig

  Fig. 1. 


1.

  A pliitiiiiiin criiciblc \rus use11 iuid 10 cc. of wnter ivcro :ciitly lieiitctl to hoiIiiig, lirst iii tlic iiiiprovctl niid tlicn on :lie ortliniiry foriii of triiiiiglc; tlie tiiire rcquirctl wns ciircfiilly 1roted. llcslllts :-Tcinp. of writer, II'P C. Tcmp. of uir (C~JiiStliiit), 13' C.Sccollds.Ilnprovrtl triniiglc. Time i q i i i i o l Tor 10 ec. ortvntcr.. .15 ,, . . GO Ordinwx ,, Jliflcrclicc iii fnrour of iiiipmretl triiiii~lc ...... 15 9. ((I.) A plnfitism dish a n s cnililoycd, 80 ec. of wnter were l~cntcd to Iioiling oii both forius of triniiglc, nnd tlic tiiuc rcqiiircil noted. Itcsults :-Secolltls. 1iii;irarctl trinnglc with 100 cc. wntor .................. 15 I, .................. 611 Ordinnrx ,, Dillcrciiiw iri lnvnnr nr improwdl trinuglo., , , . , 20 (b.) liito n porcclaia dish 2; in. diaiuctcr, 103 grins. of RII ulloy of lend wid tin wcre ~iitroiliicerl. 'l'lic dish wns licntctl until the dloy WILS tliorouglily melted niiil the tiiiie rrqiiircil noted :-Wit11 iinprorcd trfniiglc ........................... 2 20 ., oriliiuiry ,, ........................... ' 1 50 lliflcreiito in fiivour of iiiqirovrd triiiiigb ...... :10 lfcticc tlic gniii in tirile wna froiii 20 to 25 per cent. 3. l u flat-bottoiiiccl vessels tlic results were not SO good, Iiiit wcrc diglitly in fuvour of tlic iiiiprovcd forin of triiiiiglc. J. I~spcriiiicuts ivere nlso iniidc iii biiriiiiig off orgnnic iiiiittcr. 111 soiiic ciiws tlic tiiiic occupied wiis lcsa tlinn lialf tlint required wlicii tlic ordimiry form of triitiiglc \CIW l'o siiiii 1111, tlic triiiliglc is clictrp siiicc it cnii bc innile iii loiig lciigtlis iiiitl cut iip iuto siiitiiblc portioiis by incniis o f ii filc, which imro tlicii threndctl riiicl Iiouiid togctlicr by irqn wirc iii tho ordiiiiiry wny. It is stroiig, siircc tlic llniigc IS iiiiido at the waikcst poilit, tlint is, tit tlic mitldlc. It is ccoiiomiciil, siiicc n Iiiglirr tciiilicnitiirc iiiid worc nipiil Iimtinp is olitniiicd froni 11 givcii fliiiiic.Iii tlic cspcriinci~ts rccordctl ithovc, ordiiinry pipccliiy w i s iiscd. 'Ytic nioiilil \vim iiiiidc of Iiiirtl uvooil, I L sniootli iroii wirc being uscd for tlic corc. After tlic clny ivnb iiioiildctl into tiliii~ic tlic wiru \rns witlidriiwii, iiud tlic clny tlricd iii tho stciiiu ovcii, riiitl liiiiilly Iiciitctl for sevcrd lioiira iii II iiiiilllc furiiiice niitl iillo\vctl to cool slowly. For use on ir ]urge scale ~iolislicil steel u~oiilds will bn found suit;iblo so us to niliiiit of ii grciitcr lci~gtli of piliceliiy liciiig iiindu irt once, wliicli iiiriy iifter itiiiicnliug be ciit iip iiito the rcqiiircd 


the \vim and veswl iiiuy occur. '1'Lc cxpcu~c iilso is coiiritlcnrblc, niitl effcctunlly ~irccliidcs its iisc by 1111 but iidvniiccd studciits. 2. Tlic odiiinry pipcclny trictnglc prevruta coiitiict of tlrc flame, except iit tlic t h e e iiiiglcs, piirticiiliirly if the vcsscl to be Iiented is siiiiill, such us criicibles

  Is tlic vnrious supports used for Iioldiiig cruciblcs nntl like vesscls iluriiig Iientiug, tlic following ilisndvniitngcs nrc prcseiit , kc.2.Triuirgle~ inn& ciitirely of piirccliiiii iiiid lireclny iirc frngilc nrid expcusive.Tlic Iuoilificutiou iii tlic improved form of triiri~gle xliowu iii Fig.1cousistc simldy iii iiiiikiiig i t lliiiigc iu the iiiiildlc 



:-1. l'lntiiiiiin triuiiglcs on Iiciiting to II bigli twnpcrnturc expund urid soften, iutliicin~ '' mggiiiy." If plntiiiuiii vessels nrc Iicntcd, piirtiiil fiision Iict\vccii
P J B Qorora, Colcman, E Ficld, ' Forth, Pmiicis, C Tnylor Sir, John J T \yooct Tnriicy, Y J 1l, P D Xorcllr, I L I.. .\IICIIIIuTF I N TIIE CIIAIII. G J \vnrti
THE JOURNAL OF THE BOUIETY OF CHENICAL rNDU8TRY. [AprilSO.lEWL