US1030787A - Incandescing element. - Google Patents

Description

D. J. MONOSMITH. INGANDESCING ELEMENT. APPLICATION FILED SEPT. 29, 1011.

Patented June 25, 1912.

o. a2; wheat srarns BEST AVAILABLE COPY min 3'. nonosmiirgcr En gm tioni 1 Myinvention relates to incandescing elements admitting of general use, and more particularly to the form of incandescing element especially suitable-for use in connection with burners of the srycalled fcalciuin light type.

with the plates.

My invention further comprenends an in-' candescing element made up of plates and in which the element after being subjected ts'heat tor the purpose of burning out all combustible matter and driving ofi all volatile gases or apors is shrunken by the application of intense heat.

My invention further comprehends; a 0115 improvements in incande'scizng elen .'t o increas & al-efiiciency and durability of the latte the accompany the pin:pose's-=,of. which are generterence 1s Specificatioir' ofifietteksIntent. Application filed se tem sneief is n' sriar ,as1',94s.- i

g iislnext'suhjeetedto pres'sur Ilannn and:alsov ,the scorei 'flines I? ee-elite vltled n o'rder t6 weaxen th'ei'nin;

ement;."F gi i ucture shown 1'n bbon orlamina' L W 'tically a porous fra ueworkhavmgrgeneraliljg which; in this instance, s-=beit12lfoffl1ed inw Monosn'rrn; a citizen of saunas fiStatesg-and a resident of Spencer, in the "co untj'of Medina and State of Ohio, have inif'ented a new and Improved Inc'andescing-Element, of which the following is a full,;clear, and exact descrip y ameee i me inent fiifl l mwiiliplt i n h ess s ll? element hown-in F as-partiallx for 8 isfisectioironthe line 8'-8 o i and Fig. 9-is a perspectiveshowing' vbut in practice I prefer to use a fabrlc of fibrous material which may" have the form fabric is preferably permeated with a solut-io-riof'nitrate of thorium and nitrate of cerium. -Ihefsolution is dried outyafter which the flamina or ribbon is. cut into ened by score lines12 which parallel with each otheij'and-fwl lines may be cuts extending a-little di'stance into the' -plates ll, or-imaybe perforations figur e, the score lines '12 f a allel-with eachbthef; p 1

, other way.- inlwhichzi -ribbon or-i =lainiii'a} :ina

-bejiormed soas to be built up into-the incm like, member or lamina, 1(l

suitable fabric' and any appropriate solution of die kind mentioned may be employed,

smaller plates 11, and the :latte "are'weak-t efdisposed cent edges of the xplates-i 11; These -score extendingentirely throngh'said plates? Tl e 'manncr of making'thescoreillnes is df amid out and all of cloth or wadding, as desired, and this w.) aiavayav .isaa

COPY

- the form of a solid block; but consisting of indicated in Fig. 3. and isburned. as above described, the block is hardened and shrunken. as far as. possible, by the application of intense heat such as is applied by a veryhotflame. I find from experience 3 that the quality of the finished article is greatly improved if the hardening and shrinking be quite thorough. After the hardening and shrinking of the block is finished. one face of the block is rounded slightly, as indicated at 13 in Figs. a and In brder to use the incandescing element thusdescribed, it is clamped in a holder so that the rotund face 13 is exposed and the flame. or its equivalent. is directed againstthe rot-und face. I find that the rotundity of theface tends to protect the incandescing elementagainst accidental injury and, more over, that the'incandescin g surface thus produced has a suitable form for shedding the light. If, for any reason, either sudden or gradu'al'variation in the relative temperature of different parts of the incandescing element, or because of the element being accidentally subjected to nicchai cal st there. is atcndency for the element.- to rip cracir or otherwise break, the injury tea to take place always in a certain direction which. according to Figs. 4 and itfltitl'tl tie right and left; that is to the crack, if one is produced, will generally be. between two adjacent plates 11 or along a score line 12. A fractureis not nearly so objectionable in an incandescingele-ment, and particularly in the one here under consideration, if said fracture extends in. the gen eral direction indicated, which is substantially at right angles to the incandescing surface to'which the flame is applied.

In Fig. 6 the ribbon-like member 14 of impregnated fabric is formed into a roll 15, the finished article-being shown at 15 in Figs. 7 and 8. In this case the incandescing. element is provided with a-rotund face 16 against which the flame is applied and which becomes incandescent in order to shed light.

In Fig. 9 the ribbon-like member 17 of impregnated fabric is bentback andforth upon itself so as to form foidslS. the latter thus forming seams 19, the rest of the proce s being substantially as above described. 5118 completed st ucture form d in accord' ance with Fig. 9 is provided with a rotund face substantially as above-described with reference to the other figures.

If the structure shown in Figs. 7 and 8, or that indicated in Fig. 9, be subjected to either a molecular or mechanical strain which tends to break itor its constituent parts. the line of fracture tends to be substantially parallel with certain adjacent edges of the material. and'the incandescing element so arranged that the fracture extends as nearly as practicable directly away from the surface to which the flame is applied forthe purpose of producing incandcscence. V y

The incaudescing element above described avoids ouite a number of objections heretofore urged against incandescing elements of the type suitable for calcium gas-lightburners. Among the various objections to such incandescing elements are, first. the relapowers of most refractory substances; second. the fragility of the oxids of the rare earths used for incandescing, the fragility of such oxids being very great when the oxids are subjected to the action of intense heat or even mechanical jar or stress; and third, the necessity for using pure or nearly pure oxygenvin the burner. I have made the discovery that an incandescing element made as above described effectively avoids all of theseobjections, and may be used for a relatively long time under comparatively severe conditions.

'Brsr AVAILABLE COPY tively small incandescent or lightgiving I do not limit myself to the use of any cular material to be employed in my ed incandescing element, except as ted or as defined in my claims.

thus described my invention, what 1 im as new and desire to secure by Letters Fatent is 1. Anincandescing element made up of a plurality of separate plate-like members. of incandescing material, the said members being disposed in the form of a pile and pressed together.

2. An incandescing element comprising aplurality of plate-like members, each Weakened along a predetermined line. said members being disposed parallel with and in contact with each other and arranged in the form of a pile;

3. An incandescing element, consisting of incandescing material arranged in fiat la vers one on top of the other to form-a pile,- the said layers being parallel with each other, the edges of said layers at one end of the element being shaped to form a rounded face at said end for exposure to' a flame.

' 4. An incandescing member built up in layers ofimaterial arranged in contact with each other in the form of a pile and pressed together, the edges of the layers at one end of the member being arranged for exposure wit-beach other and extending in a direction approximately at right angles .to the end to which the flame is applied.

5'. An incandescing element, comprising in'candescing material arranged in fiat lay eis, the layers being disposed parallel: with and in Contact with each other and pressed' together, so that under action tending to break the element 'the breakage 'Willoccurbetween the layers, the. element having a face for exposure-t0 'a flameand the layers extend ng "in a direction substantially at right angles to-theface to which the flame is applied. e

' 6. Anfinc'andescing element built up of ,platelike membersarranged in the form of a; block, saidmembersbeing weakened along BEST AVAILABLE COPY lines parallel With'eac-h other, one end of the incandescing element being. roimdedfor exposure to a flame. v

7. An inca-ndescing element having a plurality of layers of incandescing material arranged one on top of the other and pressed together to form a pile,, one end of the element beingarranged for expdsure to a flame, the said layers' being eachweak'ened at intervals along lines extending parallel with each other-.- p

'- In testimony whereof I have signed 'my name to this specification in the presence of two subscribing Witnesses.

DAVID J. MONOSMITH;

WVitnesses:

J. EDWIN OURTlZCE,' MILAN I.

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