Aug. 25, "i925,
C. L. RPEN ELECTRIC FURNACE Filed sept.; I. 1921 Ivenbor' Caf! Llp-Seru) b9 IS Antornevcj Patented' Aug. 25, 1925. i y Lgg UNTD STT FQ CARL L. TEPSEN, OF SCHENETADY, NEW 'YRK, ASSIQNR GENERAL ELECTRIC CGMPANY, A COREMTXH F NEW YRI.
inerme.' mimmo Application filed Septemzer im?, 1923i. ferial No. fiiiil/'o fi/Z ae/mm if may concern: caiteil, to seein-ely anchor the layer of prolle it known that' l. Cini. L. lesen, ieetii'e nurteriiil l5 upon `the surfaee. eii'izcn ol' the l'niteil Stuten', residing ut iuyer lli o', rurioruiuluni liriel u on the Scheneetzuiy. in the eounty of Sehenertiitiy, oase of the lower eleetrorlee' constitutes a Starte of New York, have invented Certain hearth upon which n charge 17 of molten G new unil uaeful improvements in Electric brziss or the like may be maintained. The liuriuiees, of which the following is o speeiinorzihle electrodes l0, il are of smaller liculion. diameter tlui'n the cooperating stationery '.lhe present invention comprises im iinelectrorles so that when the upper electrodes proveiuent in electr-i(- furnaces of the are are in zxreing: relation to the iowerelectroes 65 type. lVhcn the are is used as u source of ille ureing tipe: of the upper electrodes may lieiit for metallurgical operations enrrieil be surrounded by Aa layer 18 of granular out nuiterinlly below ure temperatures, such carbon. 'lhe upper aireing end of the lower ne n1-us5 melting, it is necessary to uioiierziilel electrodes preferably is mode Somewhat 1 the heating" iniensity by Shielding the charge liolloweil or die-heil. The furnace may be' 70 from the direct railiution of the ure. provided with any iiesired number of elecln uecordanee with my present invention, trodes, nltlio two only have been indicated, l hure proi'iileil :in improved fui-nere in und operate with sinlrle or polypheise ourn'hich the ehurge is protected by ii Shielii rent Supply. For example, when time fur- 20 which :it the Feine time uroteets the4 hearth nare shown ie operated 'with n singleplmse 'I5 electrode iuijiu'ent the ciuirge 'from oxiilupower supply, suitable Connections are made tion unil thus prolonge the life of the furto the eeetroiles l0, ll, and 'the current nece. posees from one of the upper electrodes to The zwcmnpunying;l drawing comprises in. the eorreepoiKlingr iower electrode through f Fig. l a front eleriition, partly in section, the eoniiueting loiise to "the other lower elec- Sii oi u furnuee embodying` my invention; Fig. troile. troni thence to the J er upper elec :i heiner u cross-section on u smaller Seule. iroile.
ol the. lower cleetroile und part of the uil# By my improved construeilion space is ljoining will. econoiinzed unil :in nnprofed thermal elli` im Referring to the drawing, the l'urnure eiency is secured es Compared with former 85 container eouiprises u housing il ot' sheet eonbtrueiious utilizinr e, Sei'iarute baille, Wall irou lineil with ehupeil unil titled bloeks /L between the electrodes unil the charge. The of reiructory iiuiteriul. the inner layer i5 sluip'e .inil loeution of the electrodes together' preferably consistingofmrhorunihun brick.- with the coatingF 1:3 upon the lower eleclhe rnulteil root i consiste of :i goed gfriuie troiics shielihi the rlnirfe li' from direct heat 90 oi' lire brick. uhove which ie u layer' of roue ruiiiution of the are el ut the 'same time minut-eil heut insulating uniteriul :3. which the. lower eleetrorles i protected from oxinniy he oniitteil. Resting on u .'f'inilueiing (lation, Hem ie, renvoyer! by dief-Ci; .e011- liase G oi' the furnziee :iro stationary elec duction 'from the lower eleetrodes to the -l0 troeles, only one of which, nuniiiereil 7, 'is charge.. 95' shown. Both the base 6 unil the electrodes lil/Vinit l claim iis new :ind desire to secure consist of carbon or graphite. An eleetroclo by Letters atent of the United States, is
) posses through the. bottoni of the lurnuee l. ein electric lurniice comprising at corl'or connection to u Suitable outonuitie. eonbouaeeous electrode lnwingfu coating o heattrol apparatus.l Movable ure electrodes li), conducting oxidation reeisting Vrnaiterial, a 1GO H ,puss through refractory sleeves l2, l', second electrode of :snuiller diameter in coneistingj of n emiiorunduni composition operativo eroine; relation thereto, and con in the root` of the i'urnziee incl eontiirt with tuineilSurrounding i space about the rrrcing the eorreeponiiing lower eleeroriee. tipe of the eieetroiies, Suid container 5i? ln order to preserve the lower' eleetroiieri ingjr i hearth Minicom seid Corrieri electroiie. X05 from deteriorating inliuei'iees they are 2. in ele' le furlieize comprising ai con emite@ with lamiere of un oxiilzition resistminer, un e .trooie loeuteel on the buse oi' ingr imiteriiii siieii :is cirrhoruinluui Acement. Suid oontiii i imi/inf: o. heating epilee sich -iire'eiziii-lr @grooves Li iii-e pro'rulcil in *rho jiieeut, soul. @inet-rode neun? provided with is. i5 .surta-ice. ot the lower eieetroiies, us izulisnruoe loyer oi' i'.\:i,teoiif* Ii-etui oicuhiizion 7:10
