claim: 1. The combination in a. four-wheel radial 3o truck for a locomotive, of an iiitegral main frame consisting of T-NVO side frames; and a rear end frame and- a for-ward frame havi.ig a bearing f or a pivot pin by which. it is connected to the main frame of the locomotive, s5 the truck havino, a central projection arralftged to be conne-,ted to a draw bar pivoted to the main fraine and extending to the rear of the locomotive. 2. The combination in -,t folir-wheel radial io locoiuotive trLick, of a main frame havincr side members ancl end members, one of s,.iid end members forming a radius bar by Nvhich the triieli: isipivoted to the main fram(-, of the locomotive; an integral cross-tie, sa:id cross46 tie having projections arranged to extend into a radial@ slot in the main frtme and having a c6ntral projection arranged to be adapted to a dra-w bar mounted on the same pivot as the truck and extending to the rear end of the 60 locomotive. 3. Th6 combination in a f6ur@wheel radial locomotive truck, of an int@gral main frame havin- ch,,inneled side bars and eiid crossbarsj one of said cross-bars being in the f orm 65@ of a raclius bar and havin- a pivot pin openiiig; a cross-tie at the center of the truck; projections on the cross-tie adapted to slide in a se,gmental slot in the fraiiie; and eqtializing mech anism located witl-iin t.1-ie channels of the go@@ side frame and connected to the main eq-Lializino, meehanism of the locomotive. 4. The combination in a, four-wl-ieel radial locomotive trLick, of an integral main frame consisting of side members ancl end members. -ob@ op-e of -@vbich is i,n tlae form of a radiiis bLI,; a cross-tie extendina from one side member to the other; a cent,@@@pin bearili (T on the, e-rosstie arranged to be engaged b@'a dm-w bar, ancl a projection on each side of the, center pin bearino, grranced to extend iiito a radial t-I - -1 7( slot in tl-ie main frame of the locomotive and rollers carried by said projections and arrai-iged to travel -Linder the frame. 5. The combination in a four--wheel raclial locomotive trueli:, of an integral ruaiii frame 7, cosistino, of side members and end ii-embers, one of -Whicli is iii the forin of a radius bar; a cross-tie extending from one side member to the other; a center pin bearing on the crosstie ,trranged to be en(yacred by ,t draw bar-, 8( a projection on each s de of the center pin be-,tring arranged 't-lo extencl into a radial slot in the main frime of the locomotive; rollers c,,trriecl by said projections and arraii(-ed to travel Linder the frame; and centerin(y 8, mechanism adal)tecl to said projectiop-s an@ extendid- thro-Li-h openings in the iiiaiii fraine of the locomotive. 6. The combination in the, iiiain frame 6f i locomotive havin-,t radial slot talc(-,n from. the piv6t pin on the frame, of a trucli: mo-Lirited Lincler the frime and pivoted at the abovemeiitionecl 1:)oint t6 the frame, and having projectioiis extending into the radial slot; rollers on the truelk arran-ed to travel iincler 9,, the, fra.nle at each side of the slot; racks on the main frame of the locomotive; and piniops adjoining tl-ie rollers and arranged to mesh -",ltl-i the racks. ME, NAHE, M RIVI@-,IN. 1(

Patented July 28, 1931 1 8 1 6 , 7 4 6 @ UNITED STATES PATEN@T Oj'PFICE XENTAHEX RIVKIN, OF PI-IILADELPIIIA, rtNI@'SYLVANIA FOUR-WH-P.EL RAI):@:AL T-RUCK mer.@s in four-wheel re,,tr trucks for locolliotil,es.@ The invention is particuzltrl@, used in connection with the re@ir end :f@-,tme @,-s k@ showti in,,i, companion ap lication, Serial No. p -1@62,009, filed June 18, 1930. One object of this invention is to ii-iptove the constr7,iction of a radial s@vii-i- truck by t@ whi,-h it c,,tn be adapted to the franie deserl 'bed in the above-mep-tionecl -,ipl:)Iicition ancl which will be -uid-ed by raclial rails on the fraine, with t ra,ditis takeii 'Lronl tbc-.ooint -,it which the truck is pivo'Led to the main . frame@15 A ftirtlier object of the invejiti6n is to so des@gn the trueli: that th6 iveight of the reaier.,d of the locomotive is receia,,ad it a central r,t,di,@tl line. The invei-ition also relttes ta cert-,tin detail@9 nc of Constrtiction - ,vhich will be fully described I-Icreinafter. Tn the a,ecompai)ying drawings: Figtire I is -,t side view of the iinproi,ed four-wbeel trizek, the main frame of the lo25 -@omotive being shown in dotted lines; Fig. 2 is a plan -,,iew 6f the truck, showing the axle anci wheels in dotted lines and the engi,-ie frame in dotted lines; Fig. 3 is a s--ctiontl view on the line 3-3 Fig. 2, showing centering devices, with the PD(Illle frame in full lines; Fig. 4 is a sectional view on the line 4-4, Fi(, 2 - Fig. 5 is a sectional view on the line 5-5, 3'@ Fig. 3 Fi-s. 6'and 7 are views of a rnodification showing a rack and pinion in combination with the rollers; and Fio,. 8 is a iiiodification of a view - illustratn in(,, i. slide as a substitut@-- for the rollers. 1 is the frame of the truck, which is made in the present instance as an integral strlicture havinly side n-iembers 2-9-, a member 3 at one encf-of the truc'k, a member 4 at the opposite end of tl-ie trucli: formin,- a radius bftr, a pivot pin bearing 5, and a reinforci ng transverso m-ombei.- 6. The side members 2-2 are in tho lorni of inverted chatinels and thf3se ebannels qre open at the top ab--ve the Qqiaalizing spri.T),gg. At thg c@g@titer of the Application filed June 20,1930. Seriil No. 462,609. Mv inventiol.'l relates to cortald- improvetrtick is a cross-ti-e, 7 k@- hi-ch 1-ias a center pi@n L@earin 8 and two - LiDi@ight projectiohs@ 9 9 N@,hioh fit the radiul slot 10 f ormed in' t,@he extensio--ti It of th6 i-nain@frame@ 1.2 of'the locomotive. Thi,,3 freqme is shcivn iif, dottect &.3 lines in Fi@,s. I and 2 tnd, in full, lin@@9 it t-n - , Fi-g. 3. The ptrticultr constrilcticin, of tliis fr,,tm is s )endino, a@: plicp ition @ e et, fortli iii ,t I Seriil,'-'N7o. 4621009@l,filed Jiine 1,81 1030.. 01, @ The pr 'eclions 9 ,tre rocessed a-, shown@- in 6@ F@g. 3 tor rece@@ve'tlie short sl-iafts@ 13@ oii @,%,hi(!h ire ii-i ilinteci the i-ollers 14 iyhijeh, bie@ar, agftlil,@,t tl,,e Linder,--ide of the rails 15 ind foriii aA inteo- -a' pai-t of the- center cross-t'e 7 The radial@ slot iii @the frame is fi,,ow the 65 point x Fio,-, 1--), whi,ch i8 the pi-%,ot poi-n-t of th@ trticlk:. 'Pivoted, to the- fr',qme of- the truclz, I-S t dr,.tiv bi@,r 16. This clrt'w bar e-vtends to the re,,ii- end of the locorlotive@ and is@ cotf ledp tothete_nder. Thedrawb-ar-] :galsoset)fortl@i 70 a;nd claimed in % separat.e apl)lic,,ttioii, filed June 20-@ 1930 ulider. Serial No-.. 462,,610'. Thisdra-vvbarisn-iountedon'th4@-ga@nie@ivot!7 ,s'tb-e trucli@ an.-J, lias an opeiiing for the@ pivot pin :LS -which extei-@ids tliroitgh' the pi-V,6 t p-n 7,.5 ,, . bearifi,(,r 8 of the triiek. in soiiie. inqtaitc@@s tli(2@ pi--,vot bogri@tig- 5 i (.fl th@e truelc m,,ty be omitted@ IT@, this' cise th@6 trucl3- dep-end! tipon tho draw barf6r, radial iilovment. 90 in Pi (3@s. 6- 7 pi@nrons! !4a aro sbown, in@ addition@to tho rollors. Th-es , e pinibns@ niesh,, with ra lis 15(t o -n the under8i.de of the f ra4 c1,1:of the,trtick. lii somp, 1 nst'aftces the@ro inav be dispensed with and slide,wayq 1*61 a& may ber formed, on t@h@e@ iruct-.r,@ which slide under the@portion-s 1,56 of the fram&. ln order to ceiiter tho trucl3: vfter it ha! @ pvcss4d t cttrlte@, Ili . suita:bte ce'nte@i-i,no device, y @ t, may be Lise(:I. f-n, Fig. 3 1 httve, sliown one 96; form:,of oentor'i@ng cl@eniee of rods. 19 pii7oied@ at@ 20@ to, the proi ieti]4i- i!,),@ortions" 9 of the,@ triiek fra.me. : Each ro(I 19@, Paissres: t-hrotioh an opening 21 iiy th@,6 exteiis@ioil: 11 of ii@@fr@a@me, 1-2 and-, tlirgtigh Poni-ill- ]II the@ plate@ 35@ s@cti i t,@h 1, eth' @ re&- o e butsidi@ o - - : socket 23@ of 'the@ franie: 111, a@ji'd, inotihted. on (@ach rad' i@@ ii @piti'l@prino,'@@- whi6h, is- lo-.- catcd- iVithj'fi@ a 2,3 of the@ 11-115 PC) tbat Oter tho, pit4pos grouna th@e@

2: - 1,816,746 curve tliese springs tend to center the trLLcl@. The equalizing mechanism on each side of the truck is located - ",ithin the side men-ibers 2 of the frame of the truck. Springs 24-24a extend o,ver the edestal openings and rest lipon the boxes 25 of the axles 26. 27 is an eqlializing leved pi%,oted to the center of the frame at 28. One arm of each equalizing lever is connected by a lirik 29 to oiie end of each spring 2-1-- 24a. The other end of the spring 24 i.s connected by a link 30'to ,t lever 31, which is pivoted at 32 to the frame ,tnd each of these levers is arranged di,,tgojially as sho-Nvn and connected by, a link 33 to the 15 n-iain eq-Lializin- mechanisin of the locomotive. The rear end of tl-ie spring 24a is coniiected by a linli 34 to the main frame O%f the trucl@.. NV-hile I have sho-wn the projection 8 on the cross-tie '@, in some iiistances 'the, cross-tie 7 may b6 omitted and the I)rojection may 'be mounted on the re,,tr ep-d 3 of the truckfran-ie and in this coiistruction it will be understood that the rad;.al slidewgy of the extension of the m.-Lin fr-,tme -NvoLild h,,ive to be moved so as to be above the rear end frame of the trucli:. -1