1,633,320 2. In combin,@ttion,,t Mountila(y unit iiieltid in(,- q tube haviiig slots in one @nd pi-ovided Y@- @I'L,li sea-ts,,t lainp I-iivia(y lug)s c-liga(,Yed i,.i the ,@lot:@, ,tnd s,,@,its, a@ pliig iilou-tit6cl in, tli6 'u,Libe a aiiist iio'uatioii ,iiid acii,pted to hai,e sii,yht 7o 9 tlon-ittidiiial@. iiioneii-ieiit, a con'L-)(,,t carried by si'@,ct pllig in eii(yageii:.,ci-ilu inltli the stud of tl-,.e -'i.a@i-ip, a seco2-@d plug ada,p'lledi tlo turii ill the ttil)e, ,in operati,@ig riiig on tbe, t-Libe ht@iii(Y conii,ecL,oi,. @vlih lulie s(,,coiicl-r,,iiiiecl pluofor 7.5 ttirni'ng tle saiiie, meaiis co-operative b.-tnveen t-he r!T-ioand ttibe to liold the ljlii,,o; in tivo set positioiis Avl-leii pirtially turiied a contact cari-led by the secoiicl Plll(Y a 11 ncl norma y spr;n,, pi-ess(,(l 'Loivard 'Ulie fii-st-iaal-yied con- 80 Ltet, the spi-in(, presst"rg, sei@vin(-" to liolcl said co-Tit@,@cts ip- opeii or closed pos'l@L-'Ions and ioreinc, salo@ iu(,s of the laiiip outward into the se,,t'Ls. 3. Iq coi-ibiiiatioia, ' @ii(, iiiounted t-liei-eir-1, c dz,7o,-i said casing,@ a casi,@i(- a-@i(I i-nclii@liii(- a, moiintin(- unit a cas- Sf) t) a, h.-tndl6 fixedl ii:iounty sw;.,U-Cll iliouiited iii the - paii, of contact carryi@ig plti(.s s!iO;,ably'iiiotinted in s;,,tid casi@o@ f o@ iiioA,"eii-ieits longitil@dinally tliereof , a. sii@- 90 (,.'Le sT)i,in(y pi'c,,,sed @OPtact c,,t,,,ried by one of s,,i@.d pli,,,gs, a contact eleme.-Lit carri.ed by 'Lhe ot-lier pl,,i(,- ii-ieans cari@ied by the casiiig ineltiding a iiic,,iiibei@ adjteent saici hai-idlie ancl iyiovable about the axis of said casin- for S)5 iiioain(y oiie of said plu(-s loiigitudipally of . &, zn t'ile caslii(l, ,,,,li-d the coiitacts into and out of cii-.ao-(,ii)eiit A-vith oiie aiiother and a lamp liaviiig its base mouiitecl in a socl@et forined 17 4- b LIie casi,,i(, and exertiiig pressure against 10( o-4o contact'througlien(,,ageiiaeiit A-vith th(, otiiei: ter. itS Stiticl engaging th-, lat5 COn Avi t'lle secoi)d-naiiied plu(y foi- ii)o- @o--aiiist the otlier saicl o -,IL-,a t, fo lioldby abutment of tl-ic binding post 55 tgaitst the encl ivall of ti-ie cli@gmber 53 betiveen tlie' chamber aiicl the cut-out 47. The spring serves the dual ftinction of insiii-iilg a close cont""t betweeii the hepd 50 and the cont'act 41 and of urgin(l, @Lhe biilb out,,Ya.-dly in its socket so tliat. the pins 31 %i,e forced i-nto and Iield- in seats in tl-ie b,-,yoiiot slots 32. The biilb is @Ll-iLis firiiily lield in place and jo prevente,,l fi@oi-ri jai,i@in loose dlie to vibra9 tions ircdent to traveli.ng over uneven roads or otherivise, and t,he parts are ,tlso held from r,,tttling or (,e'k,ting loose ,tncl d:srupting the cii-eiilt ol-, c,,ti,.s;no- sliort eireliiting. Ii-i the ol)ei-,,ition of the device, the switch collar 24 is (,,- iieii a partivl turn to rotate the plu(- 43 so thlt theco-Titacts 52 are iiioved into aligni-ne-nt Aiitli the cont@iet 41 to close tl,,e cii-euit ol., ai-e catised to str.-,ddle the con1( tact 41 to o eii the circuit. In tl-.is latter p pos itioll, tlio cojita-It portions 5,), ivlll remain in firm engagement iiith the sp,,teed portions of the insul,,Lted pltig '0'5 tipon opposite sides of the slot or groove 4-9 in ivhlcli the part 41 fits, so that tlae bulb is not oiily held in position, but all the pftrts are retained in position lir,,d the contacts are hold out of en,io@ement. Since the spriiig urges the plug 43 iniva,rdli, the piii 28 ii-ill be hold iii tiie outer ends of 10 the slots 26 so tha'L, the s-Nvitch ii,'ll alAY,,iys rellialln in open or closed position. Ano'lier ad-v,,tntage cf the construction is L' tb,,tt the plug 35 iii,,tv inove lo.-ilgitudinally ivlien tl,le bulb 'Is - ,@orced i-Lito its socket to f au 0 i.5 cili'ate iiiser'ion f the btilb. Dur;Dg the insertion, tl-ie spring 57 will be compressed ancl 'Lhere,,,T'Lor its exp,@l-@isioll AN@ill holcl the cont,,Lcts en(r,,ic,-ecl under tension and the bulb in po,,,iti(n. 11 illliile I li,,tve eiititlecl the invention as a ,,@I)otli,,-ht sv.,Titch it VTlll be uiidei-sto 7 O'J tilat the sii@iteli is Ldai)ted 'or (yenei,al lise tnd iiiay Yary Niidely 'Iii its co-Listrtictio-ii ivi'thout 'i'rolii the spii-it of ll'ly i-p-i,entiOT-1. I claii-ii: 1. in coiaibi-,i,@l.tioii, a iiiountin(,y unit incl-LicliT-i- ,t t,,ib-. liavii-i(, slots in oiie end provicled -w;tli seit,,@ a laiiip li,.ii,iiig luo-s eno-ao-ed i-n the @n t, Z-1 slots aiic@,Se,,its, t plu(y iiaoiilitecl iii the tube zn tit'oii and ad,,tpted to have siia 1 ,gaiiisf, ilo - ht i contaot ctiri-ic(f by sai pltl( -r iii ciiga(yeiiiciil. IVith the stud of tli,@ c laii-ip, a sc--copd plti- adapted to tui@ii in 41-lie -t@ tul)o, ai-i )pei@,itin- oii the @kiibe liaiiii(@- ii'ecti0yi 'tli ttii-iiiii,,Ythe F3,ii-,ic,,ii-ieans co-ol)eratli,e I)eEii,een 11-lic,, riii(y tnd tiib(, to liold the plug in t@vo set -,)ositions -%Ylien partially turiied ,t contael' cari--ied by the secoi-id plug and normally spriiig p--,essecl toivard the fi@st-i'lamed c,oi-ltact, the secolidna@-ned contact bein bi-fur9 cat.c,cl to (,ngage the first-named contact in one positioii ai-id stracldle 'Lhe same in aiiot',Ier position, and an electrical eireiiit in.5 eltidiiicy siid contact and lainp aD-d the, ttibe, 4. I:n a spotli-ht o-V the clitracter deset-it)(@t], a@,iioi@.jitiiig, a ttibe held in the iiioiintiiig, i 1(5 P',I,il' Of PILIGS coaxitlly aiid. i-elatively slid tli@, tube and havin- contact -e(-[ I L iioi-,ii,,illy eiio@,ig.ing o I ne aiiother, a I-laiidle oii the ttibe, snvi@eli iiieans, adjacent sa'd liincile ivith one of said plu(Ys 110 fol, @- titiiig it @or iiali:ii@i- and breaking elec-. ti@ical, connect,loii betv,,e'@en said contacts, a, itilip illoiinte(,l in one eiid of the tiibo, in eiio-aac@.,i:,eiit iiith tliie other coiita t, s,.iid ttibe c liai,in,, bayollet slots the laiiip hai,incr luo's 115 (Y o-ii its I)as(, e,.Igaled A'Vitli tihe slots aiid aclapt ed iv ei tlicrci-Ti to be helcl agaiiist outA-,7ard displ,,iceiiient t .0 -i lioi -,Li.oil , ajid a single spi,j.iio, eiic@a,,i n(, ot-ie of said contacts aiicl actC p C r 120 'tho, 1-Lius i,,i the seits of the slots. Z7, Iii coi-nbiT-iitioii, a switeli-ctrr-yino, tube, ,i h,,tndle liaviiio, a bai-rel Po ti( r )n @dti')7ted t@ telescope over the rear 6ncl of the tlibe, It claiiip sci-ev@, carried by iiid extendin(y dia125 ri-ietr;.c,-@lly of tl-ie barrel p ol-tion of tl-ie fi,iiidle, the tube ii,,tving a recess for the reception of said screiy T,,-Iien posl'ti6iiii-(y the liandle on the tube and a claii-ii) nionabor on the screiv @ . 1 -rtithin i'@liq ttibe. adapted to b tightened 1 e 30

4(,ain@t th6 int@knql f ad6 of the tube for el'aii,ipii-ig the htndl@ and ttibo to,-ether. 6. In col,iibination, a tube, lamp Plil,- ,ind a switch plut), in s@iid tube t latter plug bein@@ 6s@illatorv, curreiitsupp wires cori-. nected to said sl%Titch plug, the t e having an 6penin(,r f@om one end through% ivhi6h said -%vi@es ai-e adapted to pass and erfiorge from the bottoiu of the tube, a htndle having a bartel porti6n -.iclapted, t6 teles'eopo ov . er silct end of the tube ,ind haviiicr . an openirig froni oiie ond adapted to roceive s'aid wires and to register ivitli sicid openiiicr in the tub6 means for securin(y said handl'e oii the t.ube, and a switch-opoi@atiii& collar Dn tl-ie tube fittinover the forw,,lrd 6ild of tho, barrel find olosino, the end (jf the wil@6 oponino, therein. GEDOR,, W. ALDEEN.

1 9 6 9 3 @ 3 2 0 , Patented Sept. 4 1928. UNITED @STATES ,PATENT @OFFICE.@ GEDOR W. ALDEEN, OF F.OCKFOP-D ILLINOIS, ASSIC-NOR TO FYRAC MANUFACTURING I CO.1 OF ROCIIFORD, ILLINOIS@ A CORPORATIOIIT, OF ILLINOIS. SPOT-LIGHT SWITCH. Application filed Febi-aary 20,1925. Serial No. 10,500. This ip-ventioii relntes@ to spotliglits of 'the type hai,in@-; an uiiiiersal mo-Linting iii a s-Lipportin,- member such as a 1,kTindshield of ,tn a.-Liton-lobile and t@-e pi@imary object tltereof is I to provicle ,t noiel and simple sivit@h unit ad,,iptecl to be contained in the ti-ibe colistitiiting a I)art of tle mounting for tiie spotlio;IiLt, aiid ",hich is ulsuilly c-irriecl b the b,,ill ail-d y socket iiaeiiibe,.r or otliet iiiountino, instillecl in a i'vindshield or other suitable slipport.. i@ly invention f ui-ther coiiipreh--nds '.he provisiol'i of ,i novel switch or cont--dt -m-lans ad,,ipted for -Lise @,vith @,, sing e contt(. t light bulb, thereby simplii@ying the struct-Lire of IL-Ilie contact n-lechanism and s-witch st@lucture over tile double contae'Ll type previously ep--iplo3,ed. My invention also aiMS to PI-OlTiC!-- a constr-Liction wliieh will be econoniical to m,,,nLifactur,e and will be of li.ght ancl siiiiple strtico tiii@e n6t lil,:ely to be rendered inop@-r-)tive or L Of in,,orking ordel-, cli-ie to displace)iient ,o"et o-L, or jarring loose o tl-ie parts. The in-vention ,ilso eiiibodies a novel s-",itch st,.,ucttii@e and iiieans, for actuating the sai-,ie to ll(,,I-it or extingiiisli the sl,)otlio-lit. YN,hich cin be easily n-iinii,)ulated @vhile (yrasping the hap-d'Ie of the device and -which NNill be positively ,- Iiaiiitai iied i@.i an operat,' ve or inoperative positioii iihen once act-Liated tliei-eb3, iiisiii-iii(r ag)@iinst ,iceidently nialcino- or bi-cali:ino- of the circuit, @@- Iiieli @i,oul(I resi-ilt in ttirnin.o,- tile S-,)Otli gli t on oi, off. Aiiotli.e@ object of the inven'.@ion is coit-ipi-ehe,iaded ;Iii the pi.-ovision of novel inc-ai-is for holdidg tlio contacts in engageiiient and at the saiiie 'L'Ime boldin(y 'Llie li(-;ht bulb in po@iai ZD " tion ag 'nst accident'lil @lthile I 1-iave sho-@vn qnd vtill 1-iereinafter describe i-iiy iiii,entic)n in coiinectibn ivi'uii a spotlight aiid 1)prticul,-rly, oiie 6f ti-ie cli-tigible @"yp(, ad-,il)tecl to b(, n-iounted -Lipon the @l,,iss - Acinclsh;-elcl o-L' an autoiiiobile or the likel i'Ll is ,Linclei-stood that it is iiot restrietecl in its ti,-e to i. spotliglit b-Lit i-s e,,@Lpable of, iise. iii i-iia-.iy i strLie'Lures. 14'-Lirtheriiioi.-e iiian val,iations iii y , the structiii,e ai,rino,emeiij@ @ind aldplicatioii of the ilia@ be as desirecl \vltlain the@ ns-ion of iiiy i,nventio b wliieli i-iicompie e is li ited only by the scoi3e of tl-ie claims, Other objects and attejidant @dv@-i-itao'es will be apprecia'ed by t,liose sl@illed:i--,i this -,rt as the inventi-oii becomes better iinderstood, by reference to the folloting description -,A,hen cor@sidere,-l in conneclion witli ti-ie aecomp"lny' g d ,twin I in whichin r g@ Fig. 1 is a vertic@l longit@udinal sectional view thro-Ligl-i a spotlight embodyin- my i I n-vention; Fi . 2 is a fragiiieiitary view taken at ri@,ht 9 zm aiigles to Fig. 1 with certain of the parts c@o sh6iin in eleva-tion; Figs. 3.,,tnd 4 are.cross sectional views taken on the pltnes of the section Iiiies 3@3 ind 4-4 of Fi@,r- 1; Fig. 5 is a, fr,@t(,Mentary elevation sho-@ving 6,li a slot in tl-ie iuounting tube of tl'le device; ri ig. 6 is a detailed perspective view of It r-,iovable co-@it,,tet moi-iaber einployed in conneetion -with the device; and Fi--. 7 is a perspective view of a i-elatively 70 stationary or sliding contact forinino- pa@t of the structtire or device. Referriiig to the drawings in detail, ih II-iieh similar characters of reference desig-, nate corresponding parts thi-oug,,hotit the sev- 75 eral vic@vs of the dra ngs, 10 @vi lesio-nates the tlight -enertlly, same, refe ' ly incl spo p rab iidin(, the us-L,.,,Ll reflector casing ancl lens havino, a Vi-ibi-ilar extension sleeve or neck 11 of reduced size at t@lile back ,id,,Ipted to be fixed: 80 over the f orward end of ,i, tube 12 and ret-,lined in fixed positioii as by i-iieans of a set screiv 13 eiio-a(yed tl-irotigli the neck -,nd AviLli n , the periphery. of tl-i(I tu@'e- or otbei!ivise @as etesired. The t.-Libe is adal)ted to be iiioli-iitecl in 85 cr a, sui@,,tble suppoi-t or be,,t in,r of the dii-illible or ball ancl socl@.et type, or otherwise, if desli-ed for ex,,tniple as shoivn and Oescribed in my copending @ipplicatioi-i Serial No. 692,975 filecl February 15 192,i. As illustrated in 90 dotted lines ill l@'io-. 1 of tl-io clzaAA7i.ngs, the tube is shoivn iiiol @iited io slipport the spotlight for universal anu-Lila-r movel-.qent in a ball and socket be,,i.rin_, se,,ti.-ed in an openilig proltided in a glp..ss windsliield of an 9,iito- 95 lia6bilo, but it is to be Linderstood th,,it I do liot desire to be restricted to p,,trtic,,ilar use or n-iounting, as the device is cal),,ible of application to other us,-S.-witl-iout depai-ting from tl-ie spirit and scoi)e of the inventio3l. I A 1) aiic'tio 14- is rro-ut rit(-,d oi-i -'@lie i,e,,tr or iiinell e--Lid o.T' the' tti'k)e 12, a-nd is 1)@@efei-,,tbly in tlic, foriii oT' a I)i8tol g,,,ip 1-ia@ ,t handl.e bai-rel 15 its foi,-\Yard.or@(t fitte'd over thp, ti@@be, in wliic'ii position it is h,-Id bv a SC W re ik) -v,-Iiieh I)asses tliroi@gh the, barrel 15 f,,:Oi-D- beloi@- ancl al@so through a slot 17 lo,,-igittidinally in the acllacen.t portion of the tube l@, ti@e e,-icl O-LI the screiv enterino;, a hole in t,he opl@)0site Nv,,tll of the @ilibe atid threading or being i iii

see-tir,-d -Lh a socl@et, 18:in bi,rrel iii aligiiA iiut 19 prefer--bly o-il foi@ii,) is threaoed on tl,-ie scre-w 16 all,-l lipop- the scre,,v into se,-iiriiiu posi4@@ion@ th,-, ntit -will @,e drawn do),,nwl,,trclly for clamping the ttibe a,-icl b,- trre'L togethe,,' betavecii the r,.-ijt- aild ',,he liead of the scile-@t t-h@,is Fx,-OLI.y seciii-i.n(, the hap-cile 'U-o the ttibe. T,i(, @)1,1 1( ol)en@,niy 2.1, in wi@.- T-1 a slot ol- open2 fo", the I)uri)ose of accom"I r 9 99- CT 1)@ 3 v, s @v' 1 co-nct it 0 fl@ill i Ibc i-iioi-e A SI.ecA, c 24 ;.@bLlttabi-@ rioi-ir,,ted 6ii -Llhe tLi]De 'S PI-OATiCl ed wifli ,t s@Titel-i c liir -95 at it,,-@ 0 1-ii-,or o e,,id f-@x d to or @@orm@d inte@zral.13, (@,7,;-I,th Itiicl be,-it from ltq til:ct aiini-i' oi l'ile slec@ve 'L-o fit oA,01.1 tho foi-Avai@d enct ol@-' tlie: bl"@,,,i-el 15 the col@lai@ boi-ii(, 1)rcfei,,ibIAr Yi t rasp'lii,,,, s-.-ii-fa,6(-, t)-v led to I)ro''de iv,lii-cli the -,,Tl'd sleeve iiia@i @)e casi or ttrrnecl 'Wliile tl)-(@ or' inclependently rlie ttil,-z,@ 1-2 i!s@, ip)rovided witli opl)ositely@clispos(--d citcuilafe"eT-Iti,"Il slots 2a oa-lh ll',IlTi -19 an (PPOSitely bevelecl or l@ncline(I c.- ,mr,,iin,-, stirftee 27 oii. its rec@,- @iall,,prefei-ably slopir@- fi@oii@t tlio irteriiiediate Poi@tion or center of- the sl,-)t N@,hi.c'li extends 6nly pql,tly around the ttibe. A@,; slioi-vn tl-i-- slots'2C)@ a're foe-,Etecl in cliametriopl,)osite sid.e,s of tlie, tubo- 1'-) to receive ,i h,@@i cl f,- cl pill -98- -%VI,--.Cli is f!7iedly iiioiinted iT-i n -hr, t,,h i ai@ly c,,Ieove 24 aiicl exte cls t -)-ti si,,ii'l r enin,(@ys f-liei;ei-i. TI-i , e pi-.i 28 ip@.too, 6p - 1, the @slots 26 and co-operates wil@li tl-ie ellil.1 stirfice,,@ or e(),T)is 9-7 of the tube 12 to actiiite the 91,,Titch i-lpon rott@l ve i.novemen of tli@,, switeli;colli,r 24. A,.t incg,,i,-Iesce-nt electric biilb 29 enA,-eToj)ecr 40@ b 11 e ,y t,ic efl etor c@.isir.(r ]II the 4asliion. 11',I,S ',,I SiD(Y!Ostud oi, coji'Lltet 30 i,,id ol)p if. ,,,,I 0 @", , . ext,,@ndi-,i cl ,g li:igs oi@ I)iiis 31 adal-,)te' to (-,-iter II)avoriet slots 3.) ii,@ tlie: foriyti-d encl o-fthe 12. II-,, the 1),,,,Ib, fh(" Plll',@ 4 5 iiion,-ed i;@to e'ti-@,ved. litera@ll.Y, ciii-ecteci or -,ireiiii-iferential. I)ortlens '03 Of thc,, slet,,@- ;I)y m,,ik-inr ap.(-]. b,-eakiTi(r the eirct7,it. The i!l tlio nl"tTiTier. A Stl,).t'OT I _11,1-'AT Pllla 3 @-, of P, c e IC, cli lectr' or iTi@til,,itini, i-fil teriil., tis b,,,l el'ie, 1)01-cel.@ir, liai-d i-t,,bber or the Ilize is iTioii-i'@e(I iii tlte titb(,, II-) i-lelir fo,;ivi,r-,l eiid tliei-eof b, 1(-l froiii i-ctit,'oi-i b t Iti -oicev g @ or @ :@,)i tion 3C) oi- 1,,T@-essed iii fii6ii-i the tiile iiito i Ion ,giti-idiii@il -roo@-,e 37 in the pltiso F, tI 101,1 ,,5 5 til"Lt ttle PlilP,, I , fi-Ce :T-r :1 6r toii1:110Nelilent, but-, i@-, spliuecl or 1-i c, 1. (i@ a,),aiTir,t tiirniii(r. riie plti- is I)rovi-d6d -w@tli a central open'lng ')S t liei-ethrou,(,Ob, to iTeei@'o ,-t cont-.tet '09 P,-@ef em, bly of T-sliape@t forn-i be@,@t Pio ii Fi--s I aiid 7 of the dr,-win(,@s, The sl-@.-t,ik of cont,,ict '01) -xtejiOF,@ tlirough ti-ic o eiii y in the pl.lig an(! Its o-Lit(-,,i, eTid 40 p n, l@e oD'i,,irged or tipset to retdi--i the @il position and loc,,tte the s,,tme fo,,.@ with the codtact 30 of the ]am',) T c r o Pi iiit-,iiibcllr, or 1),Itr 4-'I@ is einbodd(@d in the oppos@ite ei--d of the ])Itig to feriii a contact strip I s th(@reof ,ire spaceci @o-f- and Llie ei-ICi f roiii the@ poi-iplie--@,y ancl -,.icls of a, P;-rc,,,Yo 4@@ i@--i the ivi,-, Avhicli i-eceives it so 7(@ p I th.,i-.- cortget ivitli ttie tiibe 12 @!..-icl th,,is sliort c ,j t-, 1-11(l, Tll-e @@ii-itch plu,(- 43 iiitde of sii-nito t--4e 3@ is (@,.ylir@dri.cal or oT- other el-oss .teec)rd-@ng to the sh,,il)3 oi.- cross 7@i sect.@!,)jl )f tlio ttibe oi, housii-ic, therefoi,. This ecl eris iiioiint i,,i the t-Libe 12, i@nt nae(li;ateiv @f its ends i--ri, sp@,.Ced reifttio-Ti to the It@,gi')51,-,,-tidispioiicfed)vitlisppceclopenp iT@(-,@s 4@l ,i@-@id 4r) ti.roitch h'ch tho w-@re 22 so ai@cl 23 e@xte-,icl. The ivire 9-3 is co, -.iected to sti,i[) 4C) seciir(-d i.,i a@perilhe ra-I 0'roolTo ,it the encl of the -,-,Ii,,g 43, @Lhis strip bein(@ electillc,,,tlly connected tli.,@oiigli the I)ii 28 t,) the tiibe 1,2. iA7ire Tli -9-9 ,ifter e:@tendirig tliroiio,-Ii the (peill iiz 44, is accoii-imo@l-all-ed in a eiit@otit or recess 4@ i@ o-,qo si.de of tl-te@ piti- 43, it is co,.nT)-ecled to the b@.nd-'@Lng fost 55. The pltig 43 's ad,,ti ted to be turned in the t-Libe 12 hv go sw;,tcl-i c@llar 24 actin- through the pin 28. The pl,i-ig 43 is also provided with: a longitudir)-ally mov,,ible contact member 48 depicted i-iiore clearly in Fl(,,. 6 cf the dra-ivings and sho-@vri in,.Ln Isseilibled pos,.tion in Fi(rs I and 95 2 of tli(,@ This cont,,ict iiiember consi ated strid of current consts of! an elon@4 du ti g material 1-1@o the cont -t-o9 such fts c n a_ br,,),ss or coppei- ,i,nd i-s rovid--d Y,,,ith an openp in@z 49 in tfie end of its shanlc portion or stem I(O trid btq an @O a'U @,ts ol)posite c- d bifiircated ",s inclic ted -,t 51 to provi-,Ie sp, I ced co-@itif-t T,-oiltions or fui@efiiti,,)ns 52 at eit@l-ier sicle thereof. If desir@--cl the recesg 51 tnt f ri,@,qv cont'lin inslilt,tion the iinport, act io5 p -tet poriT)(@y t,lie ion of sp,,iced co,,it I t'ons @-t,dil,,tecl 'n 0 ii e, I ])osition t6 efic,,,t(,e the @7' t' her position ixo Mal con+,,tet 41 qi)-d ii-i anot r thei-eto, to bridge, or stra,ddl(,, the porti-oii 4i go -s to re@niin oiit of coi,,t,,ict thereavith tbei@e- 110 ec)nt,,tct 48 i@ slid,,tl)ly,movable in I chirriber 53 in the I)Iil@g 1-3, -Ni,liieh l@,hs:aii ixial. glot 54 comn-iiini.catiiio,- the@ewith @it its iniier end tlii-oucrh WI-ii,ch t]-ic -bank of tlie, cont,,tct 48 1 i,5 pr6jects f,)r coni,,oction to:tli(-' lei,cl ivire 22 by iiie.-ins -f. t,lie bipdiii post 55 tlii@e,,iclecl into 0 9 tlie, ol-)enin 49 9 - foriA!,,trd eiicl The o )T)osite oi of the plti 43 9 - 120 's provi@tecl ivil-'I-i ,t trinsverse slot 56 e-xtend ijig di,,tiiieti-;cally tliereof t6 illovtbly receive t3.@(3 eiil,,i,r-en-leiit r)O thei-eiii. An expansible coil sl:)i-iii@ r)7 siii-roi,indi.nL), the P)bftnk 48 within the clia@niber 53 engtges ,t cii-p wisi-@.er-r)8 at the head end 50 ol-nd t w,,tsher 1,@9 i-n tl-ie oppo- 12.@ site end of the eb.atnber -,@7hich the slot 54 exte.,icls. The:si)i@ina 57 iir-oes the @7 heid 50 i..iito enga(yeiiieht w@th the cont@et 41 or the pliig 35 del,)endiT)@(r tipon tl-,e, a--qoular S; po ti.6n of tile h@ad. Mb@,einent @is -limi-tied i,.i