1,67@4 004 the, levor 61@ and@ clutch g-roove 46 toF effect may, directly, e n g a g e , s L i ( I p a r t a n d e f f p c t . i n . I the: change in a; most; convenieiit manner. - ineltstic tr@nsli'lission; of force to the armtiAlso, such drii,,ing@ unit is of a, simplified ture. ancl- impi-ioi,ed. charact@er,, espeeially;@ fr@om@ @ 4:. Ariiiature dri@in-v iiiechanism for t 5, the manufaettiriiig, point of view. It consists@ simply of t.Wo punchiiigs, pivot-ed@ toget,her ,sei'@sors,fAshion" on a. cominon@liub b,tviii(,; a clutch collar and a; drive spring.; The tN-@,oi piinchings arei or niay, be,. exact, 10 couiitei-parts, and- ca-n, be produce(l@, in quan, tities! at cost. 'This, (Irii,ing unit iiot only presert-s@ iinT)ort-,iiit adva,ntaaes frorn@ the mIltn-Liflet4irer'@- joint of . i,ie-w, btit ita.l o@ iiia,7---neto comprising, aii- assembl@ coiisist- 70 in'.. of @iv@ rel@@ivel@ mo@abl'e leners with resilient, lileans inter,posed bet%veen theiti, means for @"Ppli,ing a d@iving f6i@ce to one of said feverc; 7@hich force stresses said resirient.@ iiieaiis and then moves t-he. second 15 lever,. tli@@. 1,@,ttar adapted to ti-ansiilit the. f ol--ce to the 1 @@lmature,, and, i-iie@i@s f'(r @bodily sliiftiiio@. .-,,iid asseinblv to the first 9 -@: fi.,ow the user7s@@iiai-iied le@Te 0 adsm ;t the has; important advanta e r t tr di-ii,ino- f6ree 15 point! @ of view. It., is. not oiily inore conveii- to tlle,@ arliiattil-e aiid'rencler the first@ nan-ied' 80 ient tlo - opei-ate but it is@- stiircl-..v: ancl, reliable @transmission ineffective to drive the armlt in-OPeration@ and c-ornpact'in-.,form. 'LLire. reie invention@ has been@ disclosed herein., 15. Arm@tture di-ivin(y: meci-i@.ni'sm. for a e v e r s @ e a - in an embodiment@ at present, pi@eferred@ for m,,to-neto, comprisng, t-\vo piv6ted.1 20 illllstrative biit-tihe scope 6f the-@ 'pable of i-61@ttive sii-i@-o-ino-- iliovement@ re- 8.) ptirposesinventio - is derfined@ bv the ap s oci"tt cl n , pended- claims silient meins a s e ivfth ihe levers and r,,tt-her than by the @f6re(,oing,description@@ stressed b@ their rel@tive illovemellt i n one directio@.i, iii'eql,iis foiapplving. ,t. drivill(Y. What IF claim 1. A@n@,,ir-mattire. driving i-neehanisrn for@ P- force to oiie of said' ieiel,'s \vhich force 25 m gneto@ coluprisiifg-@in con-ibin,,ition.i-v@i t'@l a. ,;tres@@(,s 9@iid. resilient i-netns ,tnct then moves 90 a part@ connected-@ to th-e ariliitill:e fov mov, iDf, the s(,cop-d lever, tl-ie l@itt6r adapted to. transt,he s,,Ime an operat-in(y rnember c,,ipa.ble of -,,it the fo e to t h e a r i n a t u r e , a n ( I ' m e a n s f o r r e bein2@, boclily, sliiftetl intio or @otit, of -posit-ion shiL'tino-. oiie of said levers7 in a, ctirecti6Ti to enzt@Lye said; @art, i2oii,.ipl)IA,,iii 'I. -ii,- 0 .1 9P, illel' tit@s I)ivotal axis to cause the fi@,-,t 30 drivino- force to s'aid, operit,ing. i-iiei-nbeii, nliaied levei. to transmi-t tl-i(@ driving f 6ree, go wherebv tlip, 1,,ttter iitill; be, moyedi and@ if I)o- to tlie. armature aiid render the first -n,,imed sitioned, to eng-ago ,,,aid pai,i, move. the. translaii,,@,,1011, illieffectiie to d'rive the ,irma- . armature,.,,i, seconcl- operatin, @ men-iber ,il-,o aiid. el,,ist ad-lipte,cl to eneacye said, part,- ic: 35 -naeans@ throu-1@ -,@hich, the - fir,@.t @named ol)6rating member -,vhen, shifted@ oiit of@ s@,,ici sitian n@,ly7@tr.,tiismit. a. drivina- for-ce to t@ii(,. oth(-r@ operating- member, and. thus to s,.i@id, part,,. ivhereb)T@ the arm,,it-Lir-e,-m-,iy- be driven 40 b-v@ ' elasti@ t 'cl driv'all ran rnission, from- sai i,@o@ force:,when desirecl. 2.,A.rmature dri'vin@. meeli@,iiisiii@, for a. ma,o,@neto,,co.inprisiiicr. tN@o relati,@el movable y part,3, resi.lie@t means a@s,)ciatecl there-vvii!li., 4 @ and stressed bv tbeir. r@elative -movemc@nt in One direction, means f6r. applyin- -,t. d@ivinc, e ne f @ s " t@l, t7l' , _ _ , fore to 0 1 o aicl.pirts to ei,edy sti-ess s,ild, resilient meaiis tnd then mov6 sai.dother. part,. the lit.ter tra smittino. the dHi,@ n 50 inL-- force- t6 said a.rmature,- and ineang fole bodi,lvsfiiffi@a@@ Sli(l. part,s @",ith thei_r, "issoei - a- resilieiii'means s -hat the firs@ "cl ate, 6 t ,.@nam part become,% effective to transmit. a-n in6las7 tie d@iv.ing force to the @rr@atLire. 3. Arm,,itiire- driving-,. mebhlllnlsm for a magi-ieto, comprising, in combinition initli tl-ie: ar,@iiature and a I)art connectecl tb n-iove -ie same, two pi d eiTe,,,rs to.one tl i@ote of -,@hiel-i the clriving force is applied vnd the otlier, 60 - of iihicli ig adapted to en@,rage 8aid part ,ind transmit- the.- f6rce, froni the first nailied@ lever to the ariiiatur6, resilient ii-ie,,Lnsassociatecl r with said levers and st essed b3,. s:-.tid transmission of force, and means f6r shiftin--@ oiie 651 of said levers so- that. the first named lever, ture-. ng n-ie or a 6. Armitur6 drivi chanism' f iiiaoiieto, comprising- tiv6 pivoted leNCrs, loli eia@tic Y)--ieaii.-I tendina t6 ;Nving@ thein apart, Tneans for limiting; th6 e,@teT-lt 6f. such, relative s-winging movemeiit, me,,ins for appl.)7ina force to one of said levers in;,.a. clirection u h as,t6 swii@-o- tl-ieiu toi-,, a d' 10 s C -,Lrd eacli@other n r) -neans t pa stte@8 said 61asfic. i rt iii the path Of the other le-@er by inean.9 of ivhich tli6 armature ma-@ be moved,.,,t @secolid' pai-t b y me,,tns of wili6htlie ar.ii-iature mq,y be moved, iftfn-o: saicl 16i,irs to brino- 110 and means for, Sli tl-ie first nained lever int@o the path of@ the cond n ze Iltmeo@ p,,Lrt, -@i-hereby the ariiatpre m,,iv be inovecl - witholit transmitt'ln(r tliia -dri@ing force on lever. througli tl-ie see d "7. -zvrn-iafure drivin-,@ mech-,in . ism for ,t@ 115 magileto comprilino- t-wo pivotocli levers, el,,tstic means tendino, to qvving them a-pzt,l't, metns. f@or@ limitinl, Che exteiit of stich rela;tive s",ln@rino, iia6v@riient, means f6r applyida, force to one "@of said.11 evers in a direction@ suc@ 121 a-, to- swiiio, t]-fe@n t6 each 6tlier aiid. . t, w,-, r d stregs said elastic. inoaii:s, part' i.n the paihe of thp. oth r-lever by inevn Of -whicliltlie@ irmature may be Pi6- ved a second@ pa,rt by meins of -whi@h the irmattire maN7 bemoved 125 and nl6,qnS CODilectip-g sp,,id. levers so tl-lat they nlay be shiftecl to-7ether axi,,i-Ily Nvith poet: to the @es said pivol t(:)-bri-qg- the, first iici-ined lever ii-it,o the' path of.@ t-l@e se6ond nained'l?art,, wher6@y th@ armatiire may be i@o

i,674,o94 rnoved withotit transialittilig the driving force through the second lever. 8. Armature driving mechanism for a magneto, comprising, two levers mounted upon a common pivot and shiftable axially thereon, elastic nietns tendino-, to swino, the levers apart, means for limiting the extent of such relative swinging movement, means for applying the armature. driving force to 10 one of said levers in a direction such as to tend to swidg them together and stress said elastic means, an armature driving abutment in the path of the other lever, a second armature driving abutment, and a luo- on the first named lever adapted to engage the Is second armature drivincr abutment when said levers are shifted for the purpo,e of driving the armature without recourse to said elastic means. In testimony whereof I have affixed my 20 si,-nature. PHELPS BROWN.

Patented June 19, 1928. l@674,094@ UNITED STATES PATENT OFFICE. PHELPS BROWN, OF SPRINGFIELD. MASSACHUSETTS. ARMATURE-ACTUATTNG MECHANISM. Application filed March 24:, 1926. Serial No. 97,011. This invention relates to iiiaproved @i-iechanisn-i for actiiatin I the ariiiature of a iiia(yneto. The ina-ention is an i.mprover,@,ep-t oii tli,,it A )f U. S. P-,itent No. 1.,517,94S, u@raiited December 2, 191- )4, oD aii , ipA-ent',-)n of Phelp,-, Brown,and.Ir,,i E. Rendriel,@son. Like that invention the present oii.-- conteiiiplates drii7iiig ir@ech,,tnlsii-i of i ti,l)e - wherein the 10 ari-natiire Mai, be initiillv TiloAed otit of contact ivith its ma,!@netic I)oles by iiielast,ic tr,,insn-iission of force froiti tl@'e drive sli,,tft, imniedi,itely@ followed iip I)v a traismission of force from previoiisly stressed el-,istic 15 i-tieaiis, or wberein the ariilatiire iiiiy be driveii I entirelv by the clesci-ibed iiielistic transniission of force. The first pltin of operation is iigeftil on stai,tina oi- low cilaine speeds and the latter for fti(,Yher eiiaine 20 speeds. III shiftin(, from the first to the secoiid plaii of operation, the clesii,ed advance ill si)eecl is a-t itoiiiati'cillv obtained. The object of tl-iis invention is to proa,ide ,in iiiiproved arinattire actii,,,,ti ng n-iecll,,inigm 25 for the (yener-,il piirposo. ibove set forth and to provicle siieb a iiieebanisn-i ivbich iz-, n-iore conveiiient to op@rate, ebe,.tper to mfinufactui@e iTid as,@enible. ancl simpler tnd niore compact i-n foriii. (ye, .io Otlier objects q,nd @idi,@inta s will appelir in the follo.wing clesel.@iption and will be pointed otif in the ,tl)pended claims. The inveiition will be disclosed @Nlth refereiiee to the accoiiipanyii)g draivings, in 35 ivhich:- Fig. 1 is a front elevatiotial view of a in,,igneto eiiibodying the f,,rm,,iture aettiating meebanisi-n of this invention F i!,Y. 2 is ,i. botton-i plan view tal,-en on the 40 line ?-2 of Fig. l-, Fi(,. 3 is -,tn e-nlar-aed biit fragi-nentary view, tq]@:en silililarly i,@ Fi(-@ 1), but slio-,vin'ii g the ,irinatiiiT n m-cli,,tnisri shifted into I)osition foi.- direct drive-, 45 F;@---. 4 is @iTi etil,,irgecl crosg sectioll-,il view t,ql@eii on the Iiiie 4-4 of Fiq. I Figs. 5 ,ind 6 ,ire enlarged biit. fragmen tarv cross sectioiial views talcen oii the li-nes 15 5 ,iiicl 6-6. i-espectively of Fip@. 1; 50 Fi!z. 7 is a fi@@io-mentary rear clev,,ttio-nal illiistrative of the devices for sliiftinf@, the armature actiiatinff i-nechanism; Fi97. 8 i.9 a sectional 1)lan vleiv t,@l;cen on the line 8-8 o l@i@y. 7:@ TAi,(@, @) is ,i se(,tional elevatioiit]. ),iew Oil the line 9-9 of Fig. 4; Fi(r. 10 is aii enlai,(.Yed sectional view illtistrative of the i-tiounting of the lever arms of the ariiiattire actiiatincy mechanisri; aiid Figs. 11 and l@) @re' plaii and elevational 60 vieivs. respectiveli,, of one@ of stich levei, arnis. The prese@lit in@-entioil being dii-ected primai-ily ioiiiecliallispI for actiiaiing the armatii@,-e. is 1,-r(yelv independent of the particular deti@ils of ;C@'@oT@@triietion of the ot,her pai-ts of 65 the magneto. The magneto shown is illustratia,e of a g(,neral type and is one exaii-iple of ni,-,ny vi@,.@ioi-is inaonetos of tllis general tYI)e witli -N@,hicli the in@-ention nial, be used. Th e inalo,-,ieto illtistrated is, wiih the ex- 70 cepti on of the Priiiature, aettiatincr iiiechanisi)- i Ind the ti,riiat re moiint' U ing, constructed in the ii-i,,,,nner fully disclosed in United State g Letters Patent No. 1,557.9'@6, cyranted Octo ber 20, 1925 on al'i inv'enti@on of Plelps 75 Bi,oi vn and Terrence G. Louis and refereiiee is iit,,tde to this patent for a iiioi-e colliplete disel osiire of the geiieral construction of.the nianeto. Th e fr,,ime A of the maoneto is essentially 80 lili@ e th,,it of said p-,itent except that it is extend ed to oiie side to provide for the mountin_g of the ariiiature actuatiilg iiiechanism ,tnd except that -it is provided -\vith stipportin(r leg@s 10, which support it from a lower 85 hc@ tisi@@ exemplified in part by the bed 11. The iiiagnets 12, cores. 13, pi-im,,try coils 14 and secondtry coi.Is 15 are supported froiii friiii e A in the saine iiialiner shown in said pate nt,-tbe lower ends of tl-ie cores being 90 clami -)ed between the fi-aine proper aiid a sepai-,ite iiiember 16 by bolts 17. The interriipfei, casino.1- 19 is fixe4 in frame inember 16 (Fi-. 6) and c,,irries a fixed breaker point 20 insulited from tl-ie casin(r. The 95 latter also slidabl), reebives a plunger 21 which carries the movabl breal;@er ppint 1),2 e ,ti-id liis a steii-i 23 exteiiding loosely - througli ii iire 25. A ,i Itig 24 fi-.,ed to the ar iat - spi,ino, 26 acts between Iii(r 24 and the base of 100 pliiii,,Yer 21 to lift the latter, whenever possible. ,)iid bold the breal@er poiiits 20 and 22 i.n eDga(,ei-r ' ". tent. These points @tre separ,,Lted when an abiitiiient 1),7 oii steni 9,3 is en(-aged and moved bv tlle Linder side of Itig 24. A 105 second tbutiyient, 28 is proi,ided below abuti-nei-it 27 to periiiit oper,@ition of the breal@er points bv otlier meelianism, is will bereinafter appear. The electrical and inaanetic circuits are, or may be. like those shown in the T),,itent aboie referi,ed to. The ariiiature,@25 is pivotally mounted to

1,674,094 SW a-i'd a-iicl@ into contact ivitii thp. lowmg tow ,5r encls of cores 13 aild away- froiii the 8aiiie, thereby effecting a, @variation of flux in t-he ti i-,l ,t@ li:iio-,vn ii:ianner. Tli@.s ma,gne c circuit r) pivota.1 nlountiTia i@, eff6eted by fixin(, tlio a s@ armature to . haft 000 (Fig. 2) Nvh,6.11 is rotatably ii-iounted iii two spaced lugs 31 formed as inteira-I paxts@ of:- fraiiie A ai-id disposed near the back edge tliereof. A 10 pair- 6f ariiia-tur(@@retui-n springs 32 (Fig. 1) act. betnveon the bed 11 and arn - iattire 2,with a,@.tendency to lift, t-lie@ l@tter toivard A.nd? into; contaIt ivitli @ cores 13. The, arn-iatu,r,e- is fik-ed to Isliaft 30 by cap seileivs 33 1 (Fi@-s.- 2 a,iid' 6)' ivhich eiell pass fi-ee.iy -n re @ilrougli; ltiz 24@ the lamina;ti6ns o,f ari ttu 25, a, sli?ev6 34: and one ear of a, split collar 315,1 Nvhich et-ico-nipasses slia,ft 30. The C screws@ are threacled at their extreli'lities ill-@!0 20 the, other@ of colla.rs: 35. Consequeii'ly. these! screws-. act to hold the lug 24 t@ armature, 25'-- to cla.mp tl@ei@ ariiiatlire, lamina Lions tb,,)-et-lier tb hol(I ' the arm,,tt-ure to the, split @ c-olliirs 35 ancl to tighten tl-le eal@s of 2F) the collh-,rs, -,o that@ th-ey seeurely i@ip sli,,--Ic't 9 30. Ani operating arm -a6 is suitab.ly fixed to @ h4ft 30, at. a, location uliderlyiiig t-ho l@ateral extl-nsio-n of ftame @ A by ;@eans of' - wll:ich@ arm tl-ie sha,ft ni,,ty be ttirn6d to oper30 ate.; tlie. armat Lire-. @ An-n 36 has a,l s Lirface 3,,@ a,nd I @earries@ a, sttid7 38,@-@these p,,irts, 37 a-iicl@ 38 forniing abutiiients inovable -witli th a mat,ure,. One 6rr the' other of these ibuiment8 is @en(-Ta,(Yed by tlie. aiinaturp, actua,tin(, 35 to wliether the,@ari-nattiret be I di@i-veiy; in- it.s fli @rht a,-,v fro,,, @y the poles@ entii(@l@ by an@ ineltstic tra.TismLssio-ii@. - (yf force or bv thi@- expansive. eltort, of a. pr@evi-oiTsl,y- st'res@elci elqstic means follo,,-,,- 40 in-- tlie@ br@alKin2@ of, tl-ie ma:onotic@,h6ld on the armat.Lire by Li-n inela;stic@ . transmission of Th-e:@ ar:iiiatlira a@tua,tiiig lileelitilisll-l inu eludes, a. nit which@ is mounted on sliaft 30 46 a,djacent.ari-n 36 fcfr swinging@moven-ieiit aii(-!' whic,-h-,-, i-s wlso mount-ed to fi-eel .y slide iii an axia,l-. di_rlectdon on tliis- shaft one posi-ie tio@n@ to anot,,l r to,@ e:ffect the ti-vo kind@ of a,rn-ii-tur.e, mov,emei-it jtist cl6scribed. I This r) 0 unit,, comprises; two, le-vers 40 aD-d 1.1 whi@ii arpl or-:m-,Ly be@ exact counterp,,trts@ One of these! levers is: sli6wn, in deta,il, iii Figs. ill a-nd 12- and, as be,- seen @ froiia tl-iese@ figuresi tl-te, leie@r. miy be a@cl k,knt,@i,cyeousl@T' iiiade 5,5 from: sheet met.a,l by - pun@eh pre,-,s operatiotis a,t lo-.w@ luiiit, c6st. T*o o;f these, levers are selected,. arraiiged reversel@, Pnd tli:e.-n placecl onti-uoiis ,it,io-- Q. @ -"Tlieii sid& by7side-in c rei I ' thug, a,@r,,tii.p,,ed;, the - are@@ niounte@d,@ on a coiiiy 6o mon-@hiib 42 (Fio,. 10) whicli @in 'u,-Lirn, is slid%bly@ motinted, on @ sha,ft;@ 30. The l@.,vers a,re hel agftllllst, rela@tive@ ax.ia,l displacement on th e.hLib@,be,;ween.a--fla,n,.4e-43 .tncl the ei-inipeci@ I' over encl 44;o,f hub 4.2. Thi?@ flange 43 in o5 cooperat-ioni-with;a@similar flaT-ige-45.oia.liub 42, aitoid s c l u t c l i i , c o l l a r l i a , v i n g @ a , ; p e r i ' h - p eral groove. 46. The lever@ 40 has @in ou@ . L , - iva-rdly tliriied luo.1- 4'7 Avliieli tinc'terlies lever 11 andi thei l@,it@te li r a s - a . S i , - n i l a r l u o , 4 8 w l i i e l i oiterl'os tlie lei,ei- 40 (Fi(,s. 4 and 5). These 7( '4@ ,iiiO, 481 lill'i illas it til-e@nexteilt t6, wiii6h. tlio levers can inove Piva,.y fi,olii oil,. anotlieil. The free ollcl8 of tli(@ ILvei-s@ 40 and 41 are bent iii reverse direct.l,oiis (Fig. 3) and have projections 49 and 50 (Figs. 4 and 5), i,c@- 7 spectively@ iililelt by icason of the, belidiii( t, of the lever,- , are so i:)ositicned tl-iit p,@,lit, Of one pi-ojectioii ivill overlie part of th,@ 6tlior prbjecti6.i. Cbiisequently, these@ pi,ojections serve as abitti-iieiits ivlilc',i %i-ill (ano-a,(Ye ai,.d 8t) Iiiiiit t-l-ie extent,@ to@ ivhicla @ the leiers inay bc, mov, ed towarcl one another. i@n ari-iiattii-e drive sprino- 51, . a the shape o-f a, coil spring. s 1 -Lilter,po.""", be,@L@,@-veen tlie fi-ee end5 of the levers 40 and 41, the projections 49 and 50 8.,-) beiiio- of a size to 6hter witliiii@ th- coils o-c I the spi@ing aiicl hold 'Lhe same ill plice.: Tlic lever 40@ h,,@,@s aii inte-,-ra.1 lu52@ ii@hich is ttirneel out-,va,i-clly and@ ada-pted' ivlien I'llit, is ulovecl t,o oiie posit,ion (Fi"s. 3 aiid 90 2--l 9).@ to o)@erli-, the abutiaient@ 3'@ 6--ii ariiiatur,-, drii,iii,- I.c-ver 36,--fori-iiiiig tlie, abtiliiiepl.@ herei-Libefore refori,ecl to. AViien tlie. tinit@ is: MO-%cd '@-ol its otliel- positicn (Fia. 2), t@ie abtitiaicnt,@,59, is car@@,.(@d out of @v@@lyin@ r(,@- i) lat@ion witli@ lever 36, ii-Iior6by l@,vei@ .40 @ C-aii bc,@ clel)ressed. in@itliotit clirectly iii-oviii(- lei,e.r 36. Lever 41, lias ,,n inte,-ral a.I)LiLiiieiit@- fo@'lillng projeclio,n 53, siniilir to@ iileiiibc,@, 52, wliieli project-ioii 58 @a ays oic@,i,lies t',ae roo st@ud 38,. iires7t:)ecti e of @iviiieh i)o@-iti v o i i t h e unit occupies. The lever 40 is intermittent lydepressed by an eccentric 55 fOTmed m a driving shaft56 rot@i,tably mctinted@ in frame I A. Tiieec- 10i) cent-ric 55 is eiyeoml)asse d by.an ant@i-friction roll'57 ivbich overlies and en(,Yages the abutment 52 on levei@ 40' When tlii'sabtitiiient 52 als6 overlies the surface 37 of@leve Its: inclicated iii Fiu. 4 t direct.diiv,.e of tlie ll( s I @.armqtlire 25 iron-i sbaft 56 restilt . Th(l drive spridg 51 is not coinpre,-,Sed, or at@l@@ist not inapressed to -ii -ntial dei)-i-ee cc ai substa and lever 36 is molitecl by the eceen@ric 55 i@,i just the sime nianner @s if @this lever were. 115 directly enga@D,,ed by the eccentric. Whe-ii, howe,- %,,er the dri@,-i-@ig unit: 1.9 sliifted, by mein@ to be describi@d, so tlltt ablitineiit 52 is n-ioved' olit@ of ove3- @@ying relation with Llie surfa-ce 37 of lei,er, 36, a quite different aItiori '@20 takes piace. The, ec'centric dep.re@--ses lev6r40 anci@ the l@,,t'Ler iiion@es toward 16- @er 41, e t l - i o r e b 3 , c o i i i p r e s s i n g - t h e d r i v s p r i n i 2 @ 5 1 1 . The 1,,itter, when ftill' stre ed is-- not, h y S s o w - m - -,iTer. siifficient to overcome t@e @orce of @ acr- 125 netic attraction which holds the arm,,ttur(,@ to its poles. Accordingly. the lever 41 whi@ii ag d with sttid 38'a@cl t@hus moves 6nl@ s eng e when the arniattite moves, remaiiis stationary cluring the stressing. of. spri-Tig 51 and until 130

1,6@4,094 3 the pi@ojectiojis 49 i,iid 50 eng,,tge. The@ engagei,nent of these pi-oject,ions periiiits an iiielastic transmission froiii eccentric 50 tliroiigli lever 40, pi@ojections 49 and 50, a lever 41 stud 38, lever 36, and shaft 30 t6 arillattire 25, after t'Lle di-lile spriiig 51 ha@ be@n stressed. This inelastic tran inission of foi-ce serves to break tli-- inagnetic hold on ari-nature 25 and iiio-ve it a very short iiiitial 10 distaiiee aa@,ay froll'i its pcles. As soon as the iiii-Petic hbld is bi-oken, the preiiously stressed dria-e rili- 51 coiiies into play and SP " - idoves the a@iii,,lture aivay fr6n-i its poles at a speocl independent of engine speed. lb The di,lving unit may be sbifted axialll, on sh,,Lft 130 froni one to the other of iis drivin(Ir positions by ,Lnv suitable mean--. As shown, a plate 58 i@-, slidably iiaolinted on the rear face of frdnie A (Figs. 7 @Lnd 8). A 20 ser(,@-", 59 ind a pin 60, fixed to fr-,tn-ie A, pass throu(,h slots in plate 58 aiid guide,tlie s,,in-ie in its Sli'lding niovep@ient. A lever 61, n-ioiinted to freely tui,n on screi-,, 59 as a pivot, lias caiii stirfaces 62 at its loiver end Avhicii en25 lyage I)rojections 63 oii plate 58, -wliereby on swingin@), lever 61. pl,,tte 58 iiiay be shifted. Plate 58 has a dep nd' g ai-m 64 which rides e "' in (yroove 46 of the eltitch coll,,ir, ibove described. Iii- the inagnoto describe-1, the brealcer points 20 and 22 sel),.irate, for the purpose of OpeDID(y @,, noriiiallv short cirellited primary winding, at an intermediate, poiiit in the fliglit cf the ari,@iitiire aii-a37 from its poles. 3 5 These bi-eal@ei@ points-ii,ill, tberefore, close ,it a c r e o r spondin(,, poiiit iii the retiirn iiioveiiient of the arm,-Lture. Thus, the pi.imar3, iviiiding Avill'be short eircuited durin(r the 1,,itter part, of t'iie retiirn tr,,tvel, of the ari-n,.i4e) ture. Tills is desii-ed to assist iii -,ectirin(,y ,t rel,itivel qtiiet seatii-ig of the armattire Oil its poles. The sbort eircuited riiiiary windp iii@y prei-ents ,t i-,ipid buildinff tip of fltix in the 1,@i,,i,giietic circuit, lvhich wolild otliorivise 45 6eciii.- as the ai-iiiature ,ipprolielies its poles -Lnd ivliicli -"7oi Icl tend to d@aw the -,rinattir e iiito contttet ivlth its i)oles with a slia@i1) ]noise. After the ariiiatiire'lias been seated on its po'ies, all of the b6neficial effect of the short-,, 50 eiredited priiiiar Avindiiio- has been obt,,iiiied y ancl to contliil-ie this conclition wotild, be detriinental in tliit the desired btiildin(r up of fl,,i,@ io a 3naxi-@iium intensil@y in the i'@,,igi c,,ii-t woiild be unnecess,,iril netic e'l, ), cl e 1,.i y e d r)5 Therefore, iiaeaias ai@e proiided fo open the pi-imarv iiinding after tl-ie ariiiat-Lire lias be-en se@tecl o.-.i i-ts p@les@and to Si-il)seqiientl3, O'lose thi-s circuit before the, ,iriyiat-tire ao-.iin le,lives -its !)OICS. 60 'Wliiie ttic above ol)ject lias been heretofore ae,@omplis'lied, as in the Brown and Clark T-T. S. Pqtcnt No. 1.489,389-@ dated April 8. 192zi, I iccom,,)Iish it iii this ma(,,neto by a 'fie, spee,@ clifferent anci imi)roi,ed meebaiiism whicl-i will n6w be described. Referring to Figs. 2 aiid 6, the second and lowest abut ment 28 on the stem 23 of movable brea ker point 22 lies directly beneath the fork ed end of a. short lever 65, whi@ch is fixed to one end of i. short shaft 66 rot,,itably 70 mou ntod in a. lu- 67, dependinc, froin franie mem ber 16. Fixed to the othei- end of sliaft 66 is a lever 68, the free eiid of whicli is ui@- aed upwardly against a cam 69 by a sprin g 70, fixed to one of the bearin,r lugs 75 31. Cam 69 has two diametrically ol)posed piojectio-us 71 (Fig. 6) .ind is fixed to oiie end of a short sha@t 't2, rot,,ttably mounted in a hub 73, dependin(y from fi-ame A. The othe r end of shaft @2 carries a gear '(4 (Fi-. 8( 9) @hich is drive-n by a, pil-iion 75 fixed to an extension 76 of the drive shaft r)6. The sh,,tf t 72 is driven at one balf the speed of shaft 56. Honce, as the armature is moved thro u(yl-i one complete cycle on each re%,olli- 85 tion @'f shaft 56 it is necess,,try to provide the two projections 'il on cim 69. Tn Fig. 6, the parts are showii in the relatii,e positions which prelail jlist after the armature has en-ag@d its poles. With sliaft 't'-) turniiig in -,i clockwise direction'. it is al)pareiit that one of the projections 71 will shoi@tly depr ess lever 68 and thus shaft @66 and lei,er 65, wherebv the breaker pcints 20 .ind 22 )vill be separated. Continued moi,ement of shaft @2 will catise th,is projection @l to ride off the end of lever 68, thereby allowiiig the breaker points to be reeiigaged by spring 26. The reenoa(,ement of the breal@er points occu rs just shortl before the arli-iatiire 25 y stai @ts to leai-e its pole 13. s The operation of the magneto will siifficient ly appe,,tr from the foreo-.oing desci@iption and it, is esselitially like that of the ma(yneto di.se losed in Brown, & Hendrickson P tent 103 No. 1,0'17,948 dated Decembei- 2, 1924 except for the extra openiiig aiid closing of the, breali:er points, which has just been describ ed. The action of the armature drivin(y mechanis m, w hereby the armatlil-e may be driven awtv from its poles eitliei@ eiitli,ely b3, tn in-- elasti c transmissioi-i of foi-ce from the drive sbaft or by an initial inelastic traiismission 115 of foi@ce f'olloilved by,an el-,istic traiismission of. force fi-om a previously stressed drii,e sprin (r, is also,broadly similar to that of the n last named patent. ]Flowever, tl)e change r iii m 0 f o olie for f drive, to. the other is ef12o fected by differeiit meaiis and in an ap-proved mgnner. It is no lon!.2@er effected by inserting t spacer (as betiveeii projections 49 and 50) to prevent the -,tressin@@ of the drive sprin-7 aiid c,,iuse the arn-i,,ttiire to lean,e its oles at"aii eai-lier time tliaii wben stress12,) p in(r of the drii!-e spring is pormittecl. Necesstrily, such a spacer must be movin(r conz, tiT)-ti-,tlly and is not coni,-enient to operit(,. Iit the present 6ase, the entire (-Irivinc, iinif shifted axially on its support by ineaiis of