meral 34, @iesigtiates -a blonl@c of,c sheet i inetftl@ lier. asb3,.;spotwpl,.I-',@ no,. Ther spoke. elements from Avhi c@ tlle s@ructure showii. in;. Fiol@. I'@ are,@pre'Leiqbly reinfo,-cce,,L .@'fyy sectirino_@ E@- pair 35 is cut o-Lit. The manner in which this strue- of ,innular members 50 tjiereto on oppos'te tui-e can be cilit out to sav,@-,,materiiil. is sho- n, sides the,.) spokes, cross from one si-de in Fig. 6 This structure iiieludes 9, rii'll inember 36 having a, plurality . o-LI @ intogra;lly attacl-ied spoke elements 38 extending fron-i one siele and a pli:trality of inte-rall@ @i'tachecl. spoke elements 40 extending from.the io o 'p6site sid@. 'The iem'entg @8 and. 40 are p ti,r,.,ano'ec.-I in staggerecl 'r'elailoii with respect to eaell otl@6i@. After tlie@ striieture sho"Tn in i" bas been pro'Nid6d, the @l@i me'zmb-er 36 is rolled iip into i-ino@ - f'orii"i -aiia- the @nds 15 t@liereo@ secured too-eth-er in suit"tible 'm'anne'r ,t's by, sp6ti@,eldi'no-.' The sp-oke elements on b6l,-,I-i sides o-i' the rim @membep tre" .'bent b'ack. I . : 00 t s -vn in tliroti,)'h ,t littl6 more,'than 9 s hoN F.Ig' 8 to thetii the ei-6@s @6lation s@o-,vii. 20 This bei-iain@, is @@ef6r@bi@ d lines 42 sl@ON;i in Fig. 'I, on tohfa ncoltit@ees instp,adi o directly,@t the bases bf the s@6ke elements. TI iis rna,.-incr of beiidinc@- @i,o,,icl'e'c@, i'nwarc-.Ily e@iteiidii-i'p- flanges 44 -@ro-,-,'iid both side@ of the; 25 rim. TI-@@ sli@ping of t@,:e l'im iiii6 ri@,- I-orm ancl,' the bleiiding ba,ci@ 6-o.tilp" @poke eleineiits ma . be, peiTormed i@. a:6y @uit,@ble man@n'eiy i . . ,is by the use of shapino- (I i e.- -@,ft@@ the of the wheel to the other. The -wheel when finished has. t@ie - same appearance as the form preN,iou@-ly du3ci-ibed and referred to in Fig. 40 5@ in 1,6 'A;nish@a c'ondition. The aclvantp,-es of my,prpcess a.re obvio Wh@!Bls haiingo, o,r@4t sir6n'gtb nn'd,dtir:ibility cati b@,!c@caply, @re,adil nstru6@ted from y, co pqrat' is greatly f OQill- 45 sheet,metal. The o ion tat.e. by ctitting, O,U,L 'o, -Tie-, o'f', tl-i6' Avheel members -vvith, integr @ly 4@aphe,,d. spol@o, elorgents. 1 1 c ai The proce8s of makii-ig Nvheels Nvhicl@;consists i4 etit.tiiio,-. f o sb e I ,t heel o II I ,I @- - r rn, i4@tE@ W , member anc iiiteo-r ally, attaclied spoke@ Cl@B7 m:@e'n-t';s', sha'pino-,tbe cLit-6tit struettire iiito the foi-iii Nvhici-.i @it O'ce@,ipi s in the, @finislied Avh eel by @endino, saicl wheel, member into circular T-or;m.,,tnd,b,@, bendi@@ s@i'cl sdoke clemelits 65 b,ckwardly thr h 900 to caljse, s@'l@i's@oke elem nt,@,to ei-oss from on side of tho wheel to the oth-er securino, reinf6reinLy annular @ me ers , to, sa spoltl@, eleiiients Avl,iere, they tl-iiis cross and,t@pn, securing the 60 ot-l@er@@vl@' @l s 1 eel meio,@r,t t fi:ee e cl 6f sa'd Q , lij@, spoli:es h@ive been, given @ I tile cro@@ @elation @ s-Doke elements. 1,10 ... @vhereof.f,hq tinto afrjc my 30 s NVII in r@i-, 'S ah-Lib 46 'of 'the proper, In testimon aiict having 0 t-tlirne@l fla@ A8 igl@ature", u es is s e" 7@e inner' ad@ed by se@iiiii-i the flaii @,es. 48 t'6 encls of tl-ie spgke@ 6lements in suitable manGRII@F'ITH.

1 43 5, 38 8: Patc-r-ted 14, 1922. @U N I !,,'4.@E!D STATES PATENT@,@@ OF,FICE.., RALPH R. GRIFFITH OF XllqNEAPOLIS;:XINNFSOTA. PROCESS FOR XAKIXG, WHEELS. Application fil6d June 13,1921. Serial No. 477 059. l'o@ allt6AO@n it q;?,ay concern., Be it kiriown that I RALPH R.' GRIFFITH, a c iz n of the U:ftlt-ed it' e Stat es, re@@ding at 'Atinneapolis, in the'county of Hennepin and St,tte of MiDneSOt@,t have invented certain new and useful Improveiiients iii Processe@ fol. Mtking AVheels, of whicli the @-@ilO I @wing is @t specificatio-Ti Tqv invention relates to @rocess6s of mak10 ing @-vii@ei@ from sheet met,,il. An obje6t is to pi-6A7ide a, proc6ss of making wheels b@ etittino@ froi@-i sheet metal:one of tho whee-I iiiembei-S with integrItIly attached spoke elernelit@ the said wheel memb6r and spolce ele1,5 ments being then sliaped and bent froil'i their sheet form into the position whi6h',the-@@oceudv in the finishecl wheel. ; ", :@ @, 7 ' @ @.' , 'flie @iill obje'ets and ,tclvantage's, oi my iiiPe vel.iiion -@vill ap ar in connection wit@ th e 20 cletalled description, and the n6vel foatures embodied in my inventive idea, @,vill be pa,rti@-,Ularly ointed @otit in the claims. p In the accornpa,nyino, drawing which illti@sti-ate two forms in wnich my pi-ocess moby 2,5 be carried out, l'ig. I is a fi@agmenttry plah view of a piece of sheet nietal from which a h-Lib and iiltegrall attached spoke elements y niay be cut out. I"ig. 2 is a plan view showjn(- the hub member and the i-ntegrally at30 tached spoke elements after cuttino, thk@m fr6lil the sheet metal. Fig. 3 is a section@l view tali:en lengthwise through the hub after the hub member has been rolle(i up i nt6 the c,Ylindrical form and the spoke elements ha-ve 35. been positione(i by bending them back throtigli ,t little more than 900. Fig. 4 is ,t sectional view through the wheel after it h,,ts been completed by the addition of a rim and a, pair of annular.reinforeina members. 4o Fig. 5 is a side elevational view -of the finished ivheel, a small portion of the same being' broken aw,,ty. F'ig. 6 is a, fra.g:@- ientary Ian p view of a piece of sheet mel-,al showing in dotted lines the manner in which a series of 45 rim members ajid integrally attached spolke elei-p-ents are cut out. Fi-. 7 is a plan view showing the rim n-ie I iiiber-and integrally attached spoke elements after cuttina the@rd from the sheet meta.I. Fig. 8 is ,t@ se'etional 50 view through the structure producecl by r6lling up the rim iii,mber into ring form @ind by bending the spoke elements back through a little more thaii 90'. Fig. 9 is a sectional view through the wheel aftef it has been com56 pleted by the addition of a h-Lib and t pair of annular reinforcink men-ibers. Referring first to the form shown in Figs. 1 t6 4,@the iium ral 10 de@ignates a bl,,tnk of e , sheet m6tal from which the stru r h etu e s own in Fia. 2 is cut., This structure includes a 60 hub mejhber 12 having a plurality of (integ-t@lly,att.a6h4@d spoke elements 14 extending - fi,,Om one end 'a'nd a plurality of iiitegrally attached spoke elenients 16 extendin froin 9 the oppo ite en,d. These sp,olke elements are 65 eiit, from each othe@, oii lines such @s indicated at 18 but are left @attached at their bases t.o tli@'hub meniber. 'The spoke elements 14 and 16, i@s@ectiv6ly ar6 offset. with relation to her on account of th fa t th th each ot e c at e70 cut s 18 on one end are midway betN@6en,ltlhe ctit@ IS 6n t]@6 6ther@ end. In order, to comt : for this staggered o@'off et arr,.tnge,- pe4sa e s nient, the side margins 20 @nd .22 of the hub in in d line i,vhieh are 75 mo@@bei a@e cut on el e @ s locat@d slightly b I eyond the@ba@es <)f the adj4cent sp.oIK6 @@leriient@, this- latter arrangeni@iit'beii@-@'iii o@der t'hat s-@fficieiit over-@ap niay@ @oe' , provi d@a for se6uring the iiia.rgiiis t6o,eiher. It will'be ufiderst,o6d, iherefore 80 @n I h h@ F' ' t @'t af ter t e strudture wn in I ig. 2 has beeii pr6vided the hub member 12, is roll ed up ii-ito cylindrical form with the niar(-- ,-ins 20 and 2-9 slightly overlapped in order @t' hat they may be se@ured together as by 85 sp otwelding. Ih - spoli:e e ements at both en ds of the h b member are bent back thr ough a little more thall 901. This bendino @ is preferably on the dotted lines 24 shown in Fi i- 2 instead of in lines at the bases of the go sp oke elements. This. manner of bending r ovides flanges 26 around both edges of the p hu b. The:shaping of the htib into cylindrical form and the bending bacli: of the spoke ele ments inay be perforraed in any suitable 95 ma nner @s by the use o:f shapiiig dies. After the spoke elements 'have been given the cro ssed relation shown in Fig. 3, a riln 28 ha ving inturned flanges 30 is added b@..sdcLiriiig these fl,,tnges to the ends of the s oke eleloo . p me nts in suitable inanii@er as by spotwelding. Th e spoke elements are prefeiably r,einfor ced by securing in suitable manner as by sp otweldinz a, pair of angle bars 32 on opposit6 side@ at the places where the sp6kes io5 cross from one side of the wheel to the other. The wheel when finished has the appearance shown in Fig. 5. In the form shown in Figs. 6 to 9, the sl)ol@ce elements instead of being out out in- iio tecfrally with tho hub member -,tre clit out integr Ily with the rim member. The nua