US1493896A - Electric-furnace resistor support - Google Patents

Description

May 13 1924. 1,493,896

T. A. REID ELECTRIC FURNACE RESISTOR SUPPORT Filed Jan. 13, 1922 aga Q76 W WlTNESSES:

INVENTOR 7770070814. fiQ/k/ v BY ATTORNEY of a resistor spaced relatively supporting therebetween Fig. 2 is apartial l'ongitut I 3, taken on the line V-V Elia-aresfz ant f-rlatented- May I3; @924.

PATENT OFFICE.

THOMAS A. REID, OF IVILKINSB'URG, YEN

NSYLVANIA, ASSIGN GR T0 WESTINGHOUSE ELECTRIC c MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

ELECTRIC-FURNACE RESISTOR SUPPORT.

Application filed January 13, 1922. Serial No. 529,004.

T 0 all whom it may concern:

Be it known that I, Trroaras citizen of the Unitledfitates and resident of Wilkinsburg, in the com of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Electric- Furnace Resistor Supports, of which the following is a specification.

My invention relates to electric furnaces A. Ruin, a

0 and particularly to electric-resistance furnaces and it has for its object to provide a relatively simple, easily assembled and disassembled heating element for an electricresistance furnace, having adj portions small distances apart.

In practising my invention, provide a plurality of relatively narrow refractory members, of substantially 'l shape,

Sill)- 20 ported in spaced-apart relation by the walls of the furnace, each member having plurality of slots extending laterally there through in the inner face of the member. Each slot has two arts. one nart llfilil role l i .L l":

- 'tively narrow andsubstantially rectangular in cross section, the other part being Wiuei and of substantially lozenge shape in cross section. The two partsare loca n reverse position relatively to each other in adjacent 30 slots. A relatively heavy preformed resistor member, having a plurality of substantially parallel-extending end-connected convolutions is located in said slots and heir beyond the refractory ll'iOll iii ber of trapezoidal cross the wider part of each sistor member in proper in the furnace chamber.

In the single sheet of dr Figure 1 is a view, in VOL; section on the line Il of l trio-resistance furnace in w porated ihe device embodyin 9. of an elech moor-- tional view thereof on the Fig. 1;

3 is a partial lateral eroview of the-resistor-supporting in Fig. l is a partial longitudinal tional viewer the member illustrate 3, taken on the line IV IV t" reef;

Fi 5 is a partial longitudinal cross tionzil view of the member illustrated sec in Fig; i

Fig. 6 is a perspective view of a retain-- ing member. v

An electricresistance furnace ll com prises a metallic skeleton or framework 1Q having a plurality of supporting member; 13 suitably secured thereto. An outer linin 14 comprises a plurality of suitably shape bricks or blocks of a heat-insulating refractory material. An inner lining 15 comprises a plurality of bricks or blocks of a suitable high-temperature-resisting refractory material, the two linings being so formed and disposed as to provide a furnace chamber 16 of any suitable or desired contour and dimensions. The inner lining 15 is built up in spaced-apart sections to provide a plurality of groups 3.7 therebetween, the bricks or blocks immediately adjacent the groove 17 being provided with overhanging shoulder portions 18. 7

A relatively narrow refractory member 19, of T-shape in lateral cross section, has its-outer end located in one of the grooves 17, its inner end extending into the furnace chamber 16, the overhanging shoulder portions 18 of the lining 15 serving to hold the member 19 in its proper operative position, substantially as illustrated in the drawing. While I may make the member 19 of a single refractory member of proper or required dimensions, I may subdivide this member, as is i strated in the roof portion of the furnace in Fig. 1 of the drawing, A plurality of'laterally-erte'nding two part slots are formed in each of the members 9 l niceietely adjacent the inner face @nc 2i oi each of the slots is relatively new and of substantially rectangular form in lateral cross section While the other part of each of the slots is of lozengeshape in lat ral cross section. The two parts each of he slots are in revc positions in the adjacei'it slot to permit o; locating them relatively small distances strength of the 0 we part5 of the co -operate to hold the resistor operative position in the furnace ell inner A resistor comprises a relatively heavy preformed rod or bar having a plurality of substantially parallel-extending end-connected ccnvolutions, a portion of each of the convolutions being located in one of the slots slots hereinoefore described and held in proper ive position therein by means of a reg member 24: of irapezoiclal cross seclion locetecl in the part 22 of each slot. The member 24 may be made of Qllllifll a suitable e: l or of a refractory material.

t is clesiiecl to assemble the preformed member 23 in the furnace, it'is only accessory to move the resistor member lati'ally of the furnace so that portions therelre located in the slots in {lie refracmelnoer 19, after which retaining momslosfis by movingthem longitudic resistor convolutions, which will J necessitating the use oi somc form of slot similar to the slot portion to permit of locating therein a retaining member. The refracioi-y supporting members 13 may be spaced apart any suitable distance in confoisiiiicy with the a'cca of moss section of the 'slzo'i member, the main consideration bca chat the distance between the niemoers 1S the dimensions of llio resistor member shall be such as lo make the resistor member substantially sellf suppoiting betwee the supporting means 19.

This application is closely related to a coapplicat-ion of 6. A. Colby, Serial ,212 filed December 17, 1921, and as- Slgfifiil to the lVesiinghouse Electric & Mam clamoring Qompany. t, is also closely i'ecl ie an application 01' O. A. Colby, Se- No. 502,691, filed Sept. 23, 1921, and as- 1; Eil to the fi estingliousc Electric & Mani' have illustrated a specific embo lmy invention, 1 clesiic than? only itaiions shall be placed thereon as are imposed by the prior art or are specifically set forth in the appended claims.

I claim as invention 1. A resistor-supporcing means comprising a relativelv narrow i'ciii'actory member having a plurality of laterally extending cwoparc slots thercthrougli, one part being of substantially rectangular shape in lateral cross seciion, and the other part being of substantially lozenge-slime in lateral cross section, and means located in the outer porlioii of saizl Part of lozenge-shape for opera- "iely engag ng a resistor member and holdiug it in said slot.

1 may be placed in the half portions 2, A resislior-supporting means comprising a relatively narrow refractory member having a plurality of laterally extending two-part slots illerethrougli, one part being of substantially rectangular shape in lateral cross-section and the other partbeing of substantially lozengeshape in lateral cross-section, and the two parts being arranged in opposite positions relatively to each other in successive slots and means locatcd in the part of lozenge shape of said slot for retaining a resistor member in said slot.

A resistor-supporting means comprising a relatively narrow refractory member having a olurality of two-part slots extendiog laterallytheretlirougli, one part of said slot being relatively narrow for receiving 1 resistor smiths other part being wider for receiving a resistor and a resistor-holdlog means.

i. A resistocsupporting means comprising a relatively narrow refractory member having a lut-ality of two-part slots extend- Eng lacera ly therethrough, one part of each 90 of said slots beingiclatively narrow andihe other part being wider and having overhanging-flange portions, the two parts being located in reversed positions relatively is each other in adjacent successive slots.

A heating element comprising a plurality of spaced-apart refractory members, each having a lu'rality of two-part slots oxtenclixig latei'a ly therethrougli, one part of said. slots beingrelatively narrow and the 1 other part being wider and having overhanging flange portions, the two parts of sairl slots being located in reversed. positions relatively to each other in adjacent slots, at relaiively heavy resistor member extending 106 between and beyond said refractory members and having portions located in said slots, and means located in said wider parts of said slots for holding said resistor member in operative position relatively to said 110 refractory members.

6. In an electric-resistance furnace, in combinatioii, a plurality of spaced-apart relatively narrow refractory members, each having a plurality of two-part slots extemi- 1w laterally therethrougli, one part of each of said slots losing relatively narrow, and she other part being wider and having overhanging flange portions, the two parts of said slots being located in reversed positions relatively to each other in adjacent slots, a relatively heavy resistor preformed to comprise a pluralifiy of substantially paranal-extending end-connected convolutions, extepdinglhrough said slots, between and beyond said spaced-apart refractory membars and being substantially self-supporting therebetween and therebeyond, and means located in the wier part of said slotsfor holding said msistor in proper operative we ggsition relatively to said i'eiractor'y memrs.

. 7. In an electric-resistance furnace, in ombimition, a lu'raility of walls enclosing i a furnace chain 1 ,*"i plurality of spacedagart-relatively narrow refractory members 0 substantially T-shape suppoxted by said walls, each refracto member having a plurality of two-part ots extending laterally '10 therethrough, one part of each of said slots being rel islvely narrow and the other part being wi er' and having overhanging flange rtlons, thetwo arts of said slots being ocntedin reve v positions relatively to 15 each other iii adjacent slots, a relatively heavy resistor reformed to comprise a plu'ra-lit of suoetantiall v parallel-extend ing en -eonnectecl eonvo utzons throu' h said slots, between and beyond said space apart refractory members and being extenzling substantially self-s11 porting therebetweer and therebeyoncl, an means located in {he wider part of each of said sloizs for holdmf;

moms A. REID.

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