US2521232A

US2521232A - Infrared ray equipment

Info

Publication number: US2521232A
Application number: US657396A
Authority: US
Inventors: Ralph W Lashells
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-03-27
Filing date: 1946-03-27
Publication date: 1950-09-05
Anticipated expiration: 1967-09-05

Description

2 Sept. 1950 R. w. LASHELLS 2,521,232

INFI RARED RAY EQUIPMENT Filed March 27, 1946 5 Sheets-Sheet 1 /6 L i W1 INVENTUR. Falp% lWXdJieZZJ.

F Td/F/V Ki Sept. 5, 1950 R. w. LASHELLS INFRARED RAY EQUIPMENT 5 Sheets-Sheet 2 Filed March 27, 1946 S p 1950 R. w. LASHELLS 2,521,232

INFRARED RAY EQUIPMENT Filed-March 27, 1946 3 Sheets-Sheet I5 INVENTOR. 2722,; MJJZe 2Z6.

Patented Sept. 5, 1950 cmrs o PAJE'. ir1

INFRARERRA QU PM N 7.

Ralph WJIIasliells; Findlay; Ohio Application lvlmrchizq,194e,seria italicised v 2 Elaims. (01119 -3421) This invention,relates/to infrared. rayequip: merit and particularlyhtoathattype thereof in whichinfraredrayflamps are arranged injoanksj,

so as vto idirect theerays. therefrom upon an obe.

jGt%,tQ- heireated. thereby, the ,princ-ipal "object beingsrthe provision ofa construction.including a minimu-lr-i1- number, of standardrparts so con; structed and arranged. as to permit banks of,

infrared? lamps; .of: various. sizes and shapes :to be:; cons,tructedevtherefromp-at a ,minimum of; ex Den e- Objects nof thev invention include the provision of laacenstrocticn of mounting a plurality. ofj in .2 frared, lamps in banks-including. parts whic may- ,ibecutrto length and/or employed. in"m'l l1f; tiple,-- to produce; aebankof infrared, ray lamps ofrian-y' desired size, andfi shape ;.l thevprovision of I a construction as; abovedescri-bed in which the, inirared-erayvlamps; are-:arranged in, rows and;

each roW has a single reflector asseeiated therewith; common to allof the, lamps: of such row;

the provisiont of a constructiom as above f-described in,-which the frarneworhmof a bankjinicludes send: frame assemblies, "of standard: se ctioneinter'connected b cross members which. are

formedtol providet conduits me the Wiringame played for? energizing the l 1 lamps; i th r p i i n ofea construction= asaabove Tdescribed including certain, standard partsand/or, sections, capable ofsbeing used in .the construction of a bar-1k :of, a

infrared ray lamps regardlessof the sizeo sh'ape, ofatherbank; and',the provision. of. a z on tr ca tion as above described that.-is,.-simple. incon:

struction, eflicient in; operation, and economical toimanufacture" h It 7111;; o flcoursa be appreciated that; varia uia urine pla tsproduce articles-0f;

The above :vbeing amon the. objects oi the,

present inventien the, same consists in .oerta' novel. features, of constru tion and comb nations? 8 of ,partsv to" be; hereinafter described in reference t0,t1i8 ,aCCOmpaI1ying"dllaw s, an theniclaimei havingji-ithe ,abov'e and] other objects in view.

In the a'ocompanying drawings which illustrate. suitable embodiments, of the, pre ent n vention andlinr-whichilike numeralsureter'. ool k parts. throughout ,the several odifierent views, I

Fig. 1 ,is anve'nd' view oftwo banks-of, infra- 7. red" .ray lamps constructed inv accordance with thecpresentinvention and .iarranged in 0ppOSBdL relation .with respect to each;v other whereby ,to;

form an oven-likestructure through which ar ticlesitosbe, heated thereby. may be, passed,

Fig. ;,2isa-Mrearl quarterperspective view off.v one; of the banks-,- oilinfrared ray, lamps, shQWIL inlFigfi 1 etc better. bring v.outthe?construction thereof i Bis; a v frag'rrlentary perspective view illjus trating' a modifiedf form of construction for a;

part of the strilctur e shovm injFi'g; 2;

Fig. 4i s' an enlarged; partiallyf broken'; perspective view taken lookingflingthesame di rectiorr asf in FigLZ 'an'd showing onejof there'- flecto'rs', thej associated horizontal and vertical?" conduit iorming' menrhers, andf fragments-of as?v sociated;partsineigplodedqview,

Fig; 51s, a" still further emargeaif ent ly,"

per'spect eii viewtaken in, the ame direction; as; in; Fig and 4' i1lus trating in greater detail"the con n -Mat the e iof"thelioriz ntal ,1c0 1i-; waits and? the-various; attaching means therefor,' and anienlargedi trfl sverseg sectionaliview take pen" the liIie 66 of Fig, 2 through one of thefihorizontal conduitsand the associatefre fleic rE a a In infrared rayf lamp equip'ment it, is ,conven';

tio'nal practice to-' provide 1 banks of infrared rayj, lalnps each bank in thelform of a unitinclud v ingf rsupportingmeansfora pluralityfofi'inf red ray; lamps and; reflectors" associated there 1 with: Thearrangementisthat two suchhanksorj un'it's' ofilarnps" may b'e arranged in spaced but oppbsed rel'ationshib;with respect to each 9the'r;1 origo'pposite Sides'ofthe path of movementlof worktherehetween so as to]form; in'efiectianf he'ajted'hy' the-infrared ray lamps in order; to"

have some resulting efieot; as for example, the dryingo'fia coat of paint or enamel with whichthef vvork has been provided with.

w1dely varying sizes and shapes; which may dsir-ably Ue'p'rofces'sedIbj ihfi'iii'd ra'y lamps and" that the -ba'nk's of lamps in each case may vary in' size and shape from those required lor gdesiredf, other cases; If-differentparts'areQrequiredf; for each different size and shape ofl th e bank offinfi-a-red ray lanips requir'ed in each case, tlien I it wilPbe" appreciated that the ultimate costto theuserwill ldefliigher' than if'this werenot ne essarygf and ;thei' manufacturer of *suchgbanksiof lamps wfillbe requiredito, carry a greaterjinven tory1 oipartsthan" if this" were not the case;

Aic'cordin''g; 1y,j it" is' desirable inthe manuiactu're '1 of? such banks. of infrared y a p thatem, bank'"or;unitiheformed of standard parts adapteable for use in anyunit regardless-of the size;

or; shape thereof) and j standard' structural or other sections Which m'ay'fcome. in relatively ex v rnzli ,2l n t s. o'i tra ey r quire; 6-;

ing adapted to banks or units of different sizes and shapes, is to be cut to the required length. The invention relates to the latter type of structure and, because of its design, it is believed to be particularly efiicacious in producing infrared ray banks of lamps or units at a minimum of expense, it makes it possible for such banks or units to be quickly and readily fabricated, and it produces a highly efficient apparatus.

Referring now to the accompanying drawings, each bank of lamps constructed in accordance with the present invention includes a pair of laterally spaced end frames preferably formed from a standard structural section such, for instance, as the angle iron sections shown in the drawings. In the broader aspects of the invention, it will, of course, be appreciated that the method of supporting each bank of lamps is more or less unimportant, but it has been found desirable that such banks of lamps be mobile, and for that reason the end frames in theconstructions shown are provided with caster wheels for movably supporting the same from a floor or other supporting surface.

The shapes of the end frames will, of course, vary with the desired cross-sectional shape of the bank formed in each case to conform to the size and shape of the particular object or class of objects which the banks of lamps are intended to treat. In the particular case illustrated in Fig. 1, it is assumed that the object to be heated is a relatively elongated object such as indicated at II! in Fig. 1, of generally rectangular configuration and which, as a matter of illustration, may be treated by passing it between a pair of opposed banks of lamps such as illustrated in Fig, 1 as by means of a monorail conveyor indicated generally at I2. In the case shown in the drawings, it is assumed, by way of illustration, that the object I is of such size that each bank of lamps desirably include siX rows of lamps so arranged so as to project the rays therefrom not only upon the sides of the member I 0 but also upon the top and bottom surfaces thereofj Accordingly, this arrangement desirably includes the four center rows of lamps arranged to project the light therefrom laterally in a generally horizontal direction against the corresponding side of the object I0, and the upper and lower rows arranged to direct the light therefrom downwardly and inwardly, and upwardly and inwardly, respectively, so as to project the rays therefrom against the corresponding top and bottom surfaces of the object I0. With this in mind and appreciating that the framework to be described is arranged in this particular case to obtain this result, the modification of such framework to vary the arrangement of the various rows of lamps to conform them to any desired size or shape of object will be readily appreciated by those skilled in the art.

In adapting the present invention to the set of circumstances above pointed out, each end frame member of each bank comprises a vertically directed angle iron element Marranged with one flange thereof parallel to the general plane of the bank and the other flange thereof directed rearwardly from the outer edge of the first flange. The angle iron I4 at its lower end is rigidly fixed as by welding or the like to a relatively short horizontally directed angle iron I6 arranged with its length perpendicular to the general plane of the bank. The angle iron I6 is of identically the same section as the angle iron I 4, and to each of its opposite ends is suitably secured a caster wheel assembly indicated generally at I3. The angle iron I4 is substantially longer than the desired vertical spacing of the four rows of horizontally directed lamps to be employed, and adjacent its lower end an angle iron member 20 is extended between it, at a point spaced upwardly from its point of connection with the member I6, to the member I6 at a point spaced longitudinally thereof from its point of connection with the member I4, and the member 20 is suitably secured to both the members I4 and I5 in any suitable manner, as by welding or the like. It will be noted that the member 20 is arranged with its length perpendicular to the plane including the axes of the lower row of lamps, this being for a purpose which will hereinafter be described. Additionally, an angle iron member 22 is suitably secured, as by welding or the like, to the upper end of each member I4 and extends upwardly and inwardly therefrom and also perpendicular to the plane including the axes of the upper row of lamps. As will be appreciated, the

members

20 and 22 are required only to accommodate corresponding rows of lamps which are directed at a different angle than the lamps arranged with their axes perpendicular to the plane of the front face of the members I4.

The above described simple structure is all that is necessary for each end frame and it will be understood that all elements thereof except the caster wheel assemblies I8 are formed from standard structural sections simply cut to length, and/or shaped where required, and welded or otherwise suitably secured together. In the particular case shown, all the members are shown as being formed from the same size and shape of structural elements, although this is not essential in the broader aspects of the invention even though desirable.

The end frames thus described are connected together in pairs by means of a plurality of interconnecting horizontally directed cross members 30, each centrally arranged with respect to a plane including the axes of a correspondingly desired row of lamps. As best brought out in Fig. 4, each member 30 is formed from sheet metal into a channel section, the open side of which is directed rearwardly. All of the members 30 are identical to each other in size, shape, and configuration, and are preferably simply cut from relatively long lengths of such section which may be kept in stock.

In order to secure the ends of the cross members 30 to the end frame members, each end of each cross member 30 is provided with a mounting bracket best brought out in Figs. 4 and 5. As brought out in Fig. 5, each mounting bracket comprises a rectangular plate 32 of the same size as the internal dimensions of a cross member 30, and is provided with laterally turned flanges 34 along the three edges thereof, all turned in the same direction from the plane of the plate 32.

Along the fourth edge a laterally directed flange I ..fiange 36 in the plane of the open side of the member 30 and directed away therefrom, and

seem-232 a they;are suitably secured in placeeintanyr'ssuitt-tz 6 vertically aligne the; corresponding; 'channela;

membersiflrmay adjacent: channel; members 1.1: 50ri if desired; or 1 ,Wheretlieimembers: BUfare; all 'iidenticalras shown,

short?- angularly; sectioned :lengthspf such zohan-r nels may;-berrinterposedzvbetween, the resulting;

spacediends of? theiaangularly "disposed: channels and sfth'er ends of? the: next.- adja cent ichannelL Pref ablmrhowever, andst'as; broughtrvout in g-Fig;

2, iti'is simplerrandi cheaper merely to ,extendithetpieeetofsflexibie:tubing160 between :an endmfeach such."- angularly*disposedxchannel SKI-wand the adjacent' end .of'sth'eznext adjacent channel '56, the:

threaded end of-"a-lamp; indicated 917442.?Thus}?clfitfoppositesendsofstheflxible tube? Ell b'eingrconthe members 36 notonly serve as. cross a members;

for -the framework for: each? banki orz unihx, buttalso :serve as receptacles: f or the; sockets-:4 ll= iandv thewiring; a fragmentfofrwhichiis showni=andirre dicated at '44iin Fig. 4; and also illustrated in; Figrb? order -to connect the wiring:within eachr cross member 30;with that in-zeaeh:other-crossrmember; each cross member 30, as :best. brought out in Fig. 4,-'int'ermediate its endsandzpreferably 253. memberv3ll :and tel close the: operrv sides thereef,.

centrally thereof r as shown; is providedrl'witht' at; short length of-vertically directed channel Shear ranged with' its open: side facing. rearwardlysthe:

same as:the--channel's 3l In fact, the channels:

ventional-ly rsecuredrirr the corresponding. openingsiswioff the: channels: J

The open Asides-ruff the: channel: sectioned "cross members' '3flfland jthezopenr-sides of; the channels vided' ith: a -:channel:' sectionedjcover: 62;: adapted to. fitaover. theeuppers andrflower walls-of each;

andithey may be; removably' secured in placeain any; suitable manner asvbyscrews 153i 7 Similarly, eachzchannel Sfiiisprovidedi'with :a corresponding cover: lil wvhich-mayc be removably secured there 50 are preferably formed: by cuttingaofi fcorre -e-aoi' to irrany suitablelmannerzasibyrscrews165.,

spondihg lengths of the same stock from :whicha the-channel "cross members 3E8 are formed from: v

The-upper and lower walls of: each cross-member 3ll""are notched out= to receive the corresponding cross members 30 at' the point which theyzare' notched" to receivethe corresponding channew member 509a flanged plate member 5'2ris insertedm between i the upper and? lower- Walls .of "eachwrossf-x member 3%) at each-sidewf' the c p o fi lfl connection:therewithit may be desirable insorne therein for: the channel member 5ill 7and'i in'r-flush' n relatiorr with respect :to: the sides" of the notchiu and "is suitably fixed? thereto: r Each p1'ate mem-. ber* 52 is provided withanopening 154 therein aligned-with a similar opening in the side wall 45 of the--corresponding channel mernberr'5fl"'so as to permit the projectionof the wiring: Me in reach it cr0ss membcr"3ll on' either sideoffthe corre-.-

sponding channel 5 ll to 1 within the correspondingar 'Il'iiis; eachrcrossf member 3313;!)(14135'00781 62 and teach channel ajmember; 50 and :its cover 64 form' a.--closedr:conduitrinwhich the wiring :of the varicnsrlampsrflzfis enclosechiand; protected and? channeb fifithereinr In- 0rder-to'reinforceisthe 3511' additionally thei cross.-membersr3l and their:-

covers flirfo'rm' arec'eptacle. or enclosure for the":

various SGCKQtS' AOIL.

Instead of iernploying :channel members such as 5ll 'of th'e length shown'in Figr2and=described in casesrto make the channels :56 of: the shorter length; as?for instance;illustrated at 56a in Fig; 3,

with such channels being otherwiseiddentical to spacedffitom' 'one another and 'in'isuch case short lengths or fie'xible tubingclilm, .of'itheisame' generalcharacter as :the flexible tubingfiil previously channel 501- If desired, conventional 'nipplesr-'orrnmrd i nb employs-d2 t nn t the bushings may "be projected through ith'ese opene ings toprevent cutting ofthe wiringxM by.=the=- sharp edges-thereof as Wellasto serve as'a-:-means for securing each channel 50 to" its correspondingoppos'ed' 'ends of adjacent channelu membersfiila, all-as brought: out in Fig; 3: The-result is; of course, =substantially the 'same. in bothacasesvalthough Where the ends of, the: channelslabut each feeted-in any ethersuitabl ma-nner; The" chan-- nels 50 are, as brought out in Fig. LpreEe'rably provided with end *rnembers 5li suitably 'forrned andfiXedwi-th respectthereto, such end members:

lustrated in Fig. 2, itirnay'raidfiin"afford'ingzthe" structure some additional rigidity:

New in banks of' infraredray 'lampssof" the: type described,- it-is desirable; and particularly being provided 'with openings 58 1i)!"the' palssaige fleiilso wliere tl'ievlj nps employediareagf t type:

of the wiring M therethrough.

Asbest brought out' in Fig. 2; the --channels" 5llf preferably--project an equal amount above and? below theh corresponding crossmembers 30 and provide some-means for reflectingtthe rays from? the lamps in properly diffused relation upon-the worlii and preventing. the 1 raysr r fromfbeingpro= they are-preferab y ofsucl lngth that Wherrtheflfii jected in a direction which willihave no utility.

cross members 341 are -assembledin-verticallyspaced relationship'to' eachother, as -to the-end framemembers M} their opposed ends abut" each other'as indicated and in' whicli case=co1r-- In the 1 present case, the reflecting means I em? ployed consists oi atr'oughelike' member indicated generally at' l 01 one: reflectors r! l] zbeingprovided foreachrow=of lamps 42J Each refiector mils r ventional-bushings or nipples" may be-projected l of a length equal: to the-distancebetweerrithe-i end frames' of the device and, as :brought -out:v in Fig. each comprises a substantially fiatiine ner 'wa'll l2: and azlpair 'of' f opposite outwardly diverging substantially" flat side-Walls It? the lat the upper"and lower members 30 which arenot ter prefrably terminatingat tl'ieir free end's ina e1 fcrmed fscrasto? extend into? contacting:.relationshipi' withrrespect'; to the: nextw 5li-aarez preferably.closed, and :xfor; that; purpose each channelfsectioned cross-t member 331cm each; sid'er ofritsacorresponding'crossehannel 50 is pro the stem of each lamp projects, and each reflector- !8- is mounted with its central longitudinal plane including the axes of the lamps 42 for the corresponding row. Preferably, the side walls 14 are arranged in outwardly diverging relationship with respect to the central plane of the reflector and corresponding lamps 42 at an angle between 30 and 45 as by this arrangement certain advantages in the reflection of the rays from the lamps 42 is obtained, as brought out in detail in my copending application for Letters Patent of the United States on the same subject matter as the present application, filed on even date herewith, and serially numbere 657,395 now Patent Number 2,497,676. 1

Preferably, but not necessarily, the reflectors 19 are formed from relatively thin sheet aluminum having a specular finish providing a reflectivity of in the neighborhood of 80% or better, as such material has been found to be ideally suitable for use as such reflectors and, additionally, when formed from suitably thin sheets it is such as to permit the side walls"! to be bent with respect to the inner wall 12, and the flanges l bent with respect to the side walls 14, to readilyadapt them to varying spacing of the rows of lamps 42, to varying angular relationship between adjacent reflectors l0, and to meet other conditions as will be readily understood by those skilled in the art. It will be understood, however, that the reflectors H! are preferably formed to a standard section and in relatively long lengths so that in building up a bank or unit all that is required is to out such long lengths into the shorter lengths required in any particular installation and, if necessary, bend the side walls 14 with respect to the inner walls 12, and/or the flanges T6 with respect to the side walls M; to accomznodate them to the particular arrangement of parts being produced.

Preferably, the spacing of the rows of bulbs 42 is such that the adjacent flanges T3 of adjacent reflectors Hl overlap each other as brought out in Fig. 1 in which case the overlapping flanges 75 are preferably secured together as by sheet metal screws or the like indicated at 80. Where as in the case of the reflectors for the upper and lower rows of lamps 42 in the arrangement shown in Fig. l the angle of the inner sideof the reflector is substantially'the same as the flange '16 on the next adjacent reflector 10,- then and as in the case shown the first fiangemay Ibe simply removed if desired. l

The reflectors 19 are mounted in the manner shown, each from its corresponding cross member 30, and this is accomplished by fixing to the upper and lower face of each cross member 30 at each end thereof a forwardly projecting sheet relatively wide leg 88 is fixed to each upper and lower face of the member so. Each leg 88 'is centrally notched, as brought out in Fig. 4, to fit around the corresponding channel 50, and the legs 88 thus serve to reinforce the channel 30 where it is cut out to receive the corresponding channel 50. As in the case of the legs 82,

the forward end portions of the legs 88 are laterally outwardly flanged as at SI] and are similarly secured to the rear walls 12 of the corresponding greflector 10. Thus, each reflector is mounted upon its corresponding channel 30'.

The last described feature is desirable inasmuch as in building up a bank or unit of light the various channels 30 which are to be emmidployed therein including all of the auxiliary associated parts may be built up as complete subassemblies and then applied as such to the end frames of the bank or unit. For instance, in such case and referring to Fig. 4, each such subassembly may comprise a channel member 30 and its corresponding channel member 50, the corresponding reflector 10 secured thereto by the corresponding

legs

82 and 88, the corresponding mounting brackets 32 and brackets 52, covers 62 and 64, the various sockets 40 and the wiring therefor if desired. By this method of assembly, relatively small units are provided upon which the bulk of the work may be easily and quickly performed after which these sub-assemblies may be simply assembled together and to the end frames to produce the final product. It is important to note that the end frames including the members I4, I6, 20, and 22 all comprise suitable lengths of the same standard sectional material so that regardless of the size or shape of the bank of lamps to be constructed only one size of the standard structural element is required to be carried in stock and to be available; Likewise, the cross members 30 and channels 50 are all formed from the standard section so that regardless of the shape or size of the bank of lamps to be constructed, they may be formed by simply cutting off suitable lengths of such stock and properly forming such cut oil" lengths if and as required. The

covers

62 and 64 are likewise formed from a standard section and may be provided by simply cutting off suitable lengths of stock of such section. The brackets 32 and 52 are of the standard size and may be employed regardless of the'length of the bank of lamps to be constructed, and the

legs

82 and 88 are standard in size and shape and the reflectors 10' are of a standard section. Accordingly, by employing a relatively small number of standard sections for the various elements of a bank of lamps constructed in accordance with the present invention, and the small number of standard brackets or the like, substantially any desired size and/or shape of infrared ray lamp bank or unit may be quickly and economically constructed and with the result that a highly efficient device is provided.

As previously mentioned, it is common practice to mount a pair of such banks or units of infrared ray lamps in opposed relation to each other as brought out in Fig. 1 so as to form, in effect, an infrared ray oven through which articles such as the article l0 may be passed by any suitable means as, for instance, the monorail conveyor [2 for treatment by the lamps. In such installations, because of the high degree of heat given off by the lamps, some arrangement is desiralbly provided for protecting the wiring for the lamps against the deleterious effect of such heat. Where such banks of lamps are constructed in accordance with the present invention then, as brought out in Fig. l, the reflectors l0 serve to shield the conduits for the wiring, namely the cross members 30 and the channels 50, from direct reception Of all except a minor portion of the rays from the lamps 42. The cross members 32 and channels 52' are, however, spaced rear wardly from the reflectors i0 and are connected thereto only by the

legs

82 and 88, which, being relatively narrow as compared to the length of the reflectors and being relatively thin, provide only relatively small and limited paths for the conduction of heat directly from the reflectors "ill to cross members as and channels 50. In other words, it may be said that the legs 32 and 68 form paths of low heat conductivity between the connected members so that the heat absorbed by the cross members 30 and channels 50 will be mainly absorbed by convention and/or radiation of heat from the reflectors l9. However, in view of the fact that the cross members and the channels 50 are spaced rearwar-dly from the reflectors iii, a free path is provided for the flow of air upwardly over the rear faces of the reflectors between the reflectors and the cross members 38, and over the cross members 30 and the channels 50. This provides an efficient means for carrying off the heat from the members forming the conduits for the wiring and consequently prevents these conduit forming members from reaching a temperature detrimental to the wiring contained therein. This last mentioned flow of air is indicated by the arrows 90 in Fig. 1.

Furthermore, in' arranging a pair of such banks of lamps in opposed relationship, as illustrated in Fig. 1, the two banks will be arranged in opposed relation with the opposed edges of the upper and lower reflectors 1 01 in spaced relation with respect to each other as shown and as is necessary particularly where the work such as I dicated by the arrows 92 in Fig. 1, then upwardly Q between the two banks of lamps 42 and then escape from between the opposed edges of the two upper reflectors. This provides a natural draft of air upwardly between the banks'which is particularly advantageous where the work Ibeing performed is the drying of a paint or enamel coating on an object, or the driving off of some volatile substance from the work, as in such case fresh air is continuously supplied which more readily absorbs and carries off such volatile substance.

Havin thus described my invention, what 1 claim by Letters Patent is:

1. Infrared ray equipment comprising, in combination, a pair of laterally spaced and vertical ly directed end frame members, a plurality of vertically spaced horizontally extending cross members interconnecting said end frames, said cross members each comprising a channel sectioned member arranged with the open side thereof facing rearwardly, the forward wall of each of said cross members being provided with a plurality of laterally spaced openings therethrough, a plurality of lamp sockets within each of said cross members secured thereto one in line with each of said openings, wiring disposed in the channel of each of said cross members interconnecting said sockets, vertically extending conduit means interconnecting said cross members including a plurality of relatively short channel sectioned members, each arranged with its open side facing rearwardly, the upper and low er walls of or said cross members being nctched out to receive one of said channel sectioned conduit members and each one of said cross members having one of said channel secticned conduit forming members fixed with respect thereto, removable means closing the open sides of said cross members, removable means closing the open sides of said channel sectioned conduit means, a plurality of vertically and hori zontally spaced legs fixed to each of said cross members and projecting foriwardly therefrom, a generally trough shaped reflector of approxi- ,ateiy the same length said cross members rranged in forwardly spaced relation to each of said cross members, the reflector corresponding to each of said cross members being fixed to the forward terminus of said legs for the corresponding cross member and arranged with the channel thereof opening away from said cross member, and each of said reflectors having an opening in a rear wall thereof in line with each opening in the corresponding said cross members.

2. An assembly unit for infrared ray equipment comprising, in combination, an elongated channel sectioned member having a plurality of longitudinally spaced Openings in the bottom wall of the channel, a plurality of lamp sockets fixed to said member within the channel, thereof, the side walls of said channel being notched out between the ends of said member, a relatively short channel sectioned element received in said notch with its open side opening in the same direction as the open side of said member and fixed thereto, said element projecting beyond opposite sides of said member, wiring in the channel of said member interconnecting said sockets, said wiring extending into said element, a trough shaped reflector of substantially the same length as said member arranged with the bottom of the trough in opposed, parallel and spaced relation to said bottom of said channel, said bottom of said trough having openings therein one aligned with each of said openings in said member, and means extending between and secured to said member and said reflector connecting them into a unitary structure.

RALPH W. LASHELLS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,400,859 Brown et al. Dec. 20, 1921 2,042,855 Merklein June 2, 1936 2,263,866 Barber Nov. 25, 1941 2,317,426 Wilson Apr. 27, 1943 2,355,459 Miskella Aug. 8, 1944 2,419,643 Hudson Apr. 29, 1947