claimeci is: 1. In a rot,,ti@y ro(I Nvee(.1el. the coi)il)inatioii ISO

1,801,979 3 of .t wheel supported a rotary ro(I mounted in fixed position thereoii, ft draft franie'pivotally connectecl to the ivlieel supPted frame Liiid exteiidiiig forwardly tl-iereillo0iii, tiid n-ieans for adjustiiig the i@elative aiigular 1)ositions of the frames thereby elevatiiig ancl loivering the ro'ary r6d. 2. A 1-otai@y rocl weeder comprisipu, in coiiibination, % rotary wee(lin(y rod, a wheel 10 stipported fraiiie carrying the rod in fixed pordly extendir.,- draft frair. sition, t forwa ie pivotecl to the wheel stipportecl frame and adaptecl to have its forward end supported at ,t tractor at a- fi@xed elev ion, aiid mantial15 1 operable means eiigagino_- the fi-ames for justing the aiio;-Lilar relation 6T the frames @o vary the ground peiietration f the rotary 0 rod. 3. A rotary rod iveeder having a iiiain 20 fr,,Liiie, a. draft franie pivotally connectecl at its rear end to the main franie and overlapping said frame, a tractor hitch a-t the forNvard encl of the draft frame, and a pressure regulator adjustably connecting the I main 25 frame and the draft fraine intermedi,,tte the encls of the latter. 4. In a rotary rod weeder, a -wheel supP()rted fran-ie, a rotary weedina rod carried by said frame, a draft frame - 1@ivotbllv con-, 30 nected to the -wheel supported frame at a stibstantial distance froll'i ihe front of the latter and extendin- forwardly therefrom n,ieans at the forward end of the draft frame for attachment to the drawbar of a ti-actor, 35 and manually operable means infermediate the ends of the draft fraine f or controlling the position of said rotary rod, said raanually operable n-ieans beino, capable of so lifting the forward end of @he wheel supported 40 frame that its entire weio-ht will be carried by the rotary rod. 5. A rotai-y rod weeder comprisin@o,, in combination, a wheel stipported frame, It rotarv Nveedinz rod carried by said frame, t 45 draft frame extendin, forivardly of the Wlteel support@ed fr,- trne aiild pivotally conliected tliereto at t posit,ionsubstaiitially i-eillove(I from the f i,ont ol' said wheel suppol-ted frame, iiieaiis at the forw,,ird end of the 5o draft frame for att'lichnieiit to the dra-wbar of a tractor, alid a iuaiiually operable pressure reo-tila-tcr connectino, the forward end of- the wheel supported frame and the dr,-Lft franie, sllld pressure regulator beilig capablo 56 of inereasinc,- the distance between the forNvard eiid ofthe wheel supported fraiiae and the draft frame f or raisin(Y the rotary rod from the grouiid. 6. A rotai@y rod weeder cornprisi-.,g, in 60 co@Mbiiiation, a fi-an-ie, a rotary 'weedino, rod carried by said frame, i-neans carried by said frame for transini-tting rotary movemeiit to said rod, a ground wheel at the rear of saicl fr,,tme ,tnd located rearwardly of said rotary 6.5 rod, a o@ro-tind wheel stipport pivotally m6iinted on the rearward portion of saicl f@ame, ,t ivindino- shaft journaled on said frame, means connecting said winding shaft and said[ pivotal support, mea-ns for turning saicl -winding shaft to - vvind up said conneet'ng 70 i'lie,,tns thereoli,,incl elevate the rearward portion of said frariae by pullino, said ground -v.,-heel forw,,trdly, and means connecting saicl@ pivot,,tl support and frame and ad,,tpted to ii-iaintiin the gi,otincl wheel out of contict @",ith the (,Yround. III testimon -whereof I affix n-iy sio-nature. CKYARLES W. ROBIN'SON. so

Patented Apr. 21, 1931 118019979 UNITED STATES :PATENT OFFICE ibiiARLES W. ROBINSON, OF HAMILTON, ONTARIO, CANAD.&, ASSIGNOR, @BY NESNE ASSIGNYI.ENTS, TO INT-@-'RN.@-TIONAL HAr@VESTER'COMPANY, OF CHICAGO, ILLINOIS A CDRPOR-ATION OF NrlW irERISEY ROTARY ROD WEEDER Application filed October 811927. Serial No. 224,832. This invention relate8 to rotary rod -weeders and niore par@ icularl to . a novel cony striliction cap-,tble of advantageotis use Nvith ,tractors. An object 6f the iniedtioii is to pi,oiide ,t pr,l@ctic,,il ancl successf,,Il rot,,tr@y rod - @,veeOLer of such lionel consl@-riletioll that its - operati6n inay be ,td-vtntigeously controlled when - 'Llie i,i,iachiiie is @ulled by a tractor. @19 A-nother, objeec, of the invention is to I)rovi-de a rotary rod weecler havine, novel mechanism for maintaininp@ the iii,,tchine in operative condition. Ftirther objects of the invent'ion willl,,tp@415 pear as the following description pi,oceeds. Aii illus'Lrptive 6mbodiment of the tion is sho-vvn in th,e accoinpanying 4rawingfs, in which: 21) Fig-Lire 1 is a side el,;,,Vation 6f the rot,@i-y r6d weed--r Figtire 2 is a Plan; Figure 3 is a transverse vertical view, part, ly in section and partly in elevation, show,- inc,y,@the,adjListino, mechanism for'ooverning 2"5 th6 eration of the machine - O-P 'Fid,ure 4 is a lonoitudinal or side @levational vieiv of the strue'@ure shown in Figure 3; @Figure 5 @'@s a rear perspective view of the iiiachine; 20 Figtire 6 is a detail elevation of one end of,tlie m,,tchine sho-wl.nz i)arts of the driving), inechanism; Figui-e 7 is a -vieNN', pal.tiy li@ vertic,,il seetion and partly in elevtttion, showino- tli(, 35 structure by which the oporator's s.eat i@s acljus'@@bly moved upon tl-ie Tnacliine for the ptirpose of balancing and for the pui-po.se of controlling the opei-ation of the rotary rod; and 40 Figure 8 is ali enlarged elevation shonvin(y zn parts of the controlling meeliiiiisn-i iii secti,)i,-i. The ill-Listrative rod weeder comprises ,,t wheel supported frame mqde -Lip of the tranS7 v , e fr,,ime members 10 and 11 rigid@y coners 45 nected by. longit-Lidinal frame - men@t)ers 12 and 13. Intermediate IL-he Ion,-itudin,,il n-iellib6rs 13 tre be,,tiiis 14 also rigidly Qonnected to the ineinbers 10 and 11 and havincr rearward extensions 15, as clearly indicated iii Fiotiro 2 of the drawinas. This @i-aid frime is carriecl by supporting wheels 16 motintecl Upon axles ii rotatably jolirnalecl bene,,tth tlie, loi-igittidinal inembers 12 and 13. r' or the piirpose of propellin,o- the above clescribed ivheel sLipportecl frame, a draft 5-7) fran-io is applied there",-O. In the drawings thi's draft iraiiie comprises the ceiitral idember 18 extendiiio- ove I r the front transverse iiie-niber 10 and piv6ted to the rear transverse meinber 11 at 19 by means of brackets 6(l 20 avid a pivot pin 21, as ilIListrated in tl-le drawings. Side u-iein@ers 22 @ire secured @'@O the- for qrd@ end of the central member 18 as indidated at 23 in Figure 1. These s'cl inembers prefei@ably diveroe i@eai,wardly ,ind have down-turned, rod-like ends 21 loosely and pi-@o-@',ally motinted in brackets 25 sectired to the rear transverse 'inember 11, as. sho",n in Figures 1 and 2 of th@ clrawings. For the purpose 'of tfforclino@@ @,t rel,.ttively _Ixed support froiii which the machine may be con,@@rolled, a l@igid draft hiteli -96 is fixed to c,,tted in Ficrtires I tncl 8 of,. the drtwinas. This draft-structure has its forward end o'ffs'et doivnwardly to a posi-tion where@ it is s,ectired to a tractor clrawbar at 27., This draNil ba,.thus.,,tffords t relatively fixed suppoi-t from which the oper-ati6l-l of- tl-ie mtchine ,tncl the (leptli of peiielrt,tion of the ro'LLir,y rocl may ]:)e ad-,q.uatel-V colitrollecl. Foi- the piii-pose of accomplisliliic,)- the co7nof the iii-icllile .is al)oie referred to t go-vei,ning ()r eotltl.ollino- lied @ine,@@ns is ppp to the dr,,tft fraiiie interli'lecliq-te its encls, ts iiiclic@ited i@. FigLti-es 1 ai-icl 8 of the drawings. TI-iis ' governing or contiolling means includes ',I Yolice 28 i)ivot,,tllv motinted upon a pivot pil'i 2,9@held i-ii T)Iace bv the bracl@,6t,s 30, wi-iich are @,ecilre,-! to the fronlu- trapsvers,. frame meniber 10. ThecentrLimemberlSofthedraft,,e exte-.id's bet,-",ee-.i the sides of the 3'01@e, as cleirly i-Tidicated in Fi tire 3 of the di-a-",ings. 9 The iipper eiid of t@he yoke is screw-tlireadeet eceive a s6re-wtlii-e,,tded aclj to r usting rod 31. T,ii-s rod is mounte-,l in -Liprigl-it position ext,-,iidin@z down tlirouo,h the yoke qnd havin(y 32 xeJ iipOT-i its lower end by a in p 33. The head 32 is nfined s6 that it mti co St rel-iiain in subst,,tntiil 6i-iaageiiient w ith the the.forwqrd end of tbe draft as indi5 50

2 1,801,979 upper siirface of tli@l- illeiiib(,r 1.8. This is aecompi.islied bv a secondary yoke or -uide litetiiber 34, which is preferably bored to receivetlieadjustiji(Y-screv,,31. Tlieloweren(is 6 '35 of the guide 34 are beiil- i@-iivar(Ily iiiidei-neath the flange of the ceiitr,,tl niember IS, as clearly indicated by Fi cure 3 o4i the drawliigs. The part of the giiide ineiiaber 34- bet,,veen the upright t)arts of the yo"Ke 28 is ' ii the f crm of !ii a plate. This 1)late lias -,,xteiisioiis 36 extendin i), oiitAvar(Ily so as to stradclle the sides of 9 the yolce 28. Motinted i,,pon t,.Iie iipper end of f-he sha--Ft or rod 31 is t liaiid cranlc 007, the turning of which will so tilt the wheel supi por4,red frai-ie that the eiitire weight Of -'u-li,,tt frame ma-v beai- tipoii the rot,,try rod 38. For ri@idiy holding the i.-otai-v i-od 38 in position, plou, t)eams ot, "oose-iieck stiiidards --ii 39 are secure(I to the f i-aiiie. The rotary rod is jouriiale(I in I)Iow I)olnts 40 fixedly secured to the lower en(,Is of the standLii-d,; 39. At one end the rotary rod is I)rovided witli a ililivers,-tl joiiit 41 for coiiiiect",n- tlie, rod to ail Intermediate shaft 42. This shaft is driven 2.') irom cotinter-shaft 43 by meaiis of gears 44 and 45. The outer end of the sbaft 42 a@,' 11 as botl ds of the si aft 43 i-@re j ourii aled we i en .1 in the de eiidin(, legs 46 iid 47 of i sui)port p n rig,ridly seetired to a si(:e - eXtCDSioti of the .1@ frame merr.. ber 11. as cleirly shown 1 ii F,.,@),ui-e (rs. I The ini-ier e 6 of the drawin,- nd of the sh,,ift 43 has a sprocket ivheel 4,9 fi,- ,@ecl thei@eod. This shaft is driven b.), a sproelce4@- ebain 49 which is trained around a driviii,r sprocket 3,5 50 no-n-rotatively mouiited iil)oii olie of th(@ axles 17. Mea-is is provided iindei-ne,,,itli (,xteiiub .;ions 15 for clevatin(Ir I e rotnri ro(I '08 to its inoper--tive I)osition indicated in Fj(,,ure 8 6f 4to the drawings. This -Lneludes a supportiii ,g -*vh(lel 5"L journaled til-.)on the niicl-i)ortioii of .t yolze or bail havino, tl e til)wardlv e,, 14 (@ling arms.52a,id53. A ttlieii.-ii7,)I)ereii(Istlie@tilms 52 atid 53 ai@e beiit at ri,),Iit in(,,',e@-, to f oi-,ni the piv I - otinemberq,54and5r). i-otatively iiiounte(I in jour ii,,il@,, s('- (itire(i to tlle ext(@ils-lons 15 s,ii(i (-Xterisif)iis by the I)Ioe]Ts r)7. Rotatively joiirnal.ed ets .58 and 59 is a ivindiiig @,,Iiaft 60 t liftnd craiik 61 at its otiter Such a flp-xible el.ement @.-s a el-iaiii 62 is secured to the sliaft 60 so t@ll,.),t it may be -ivoiiii(I tlier(,oii. A Iink 63 coiiiects the cliaiii 6L) to a I)Iate the support el 64 ancliored to foi-- tlle ;51. In Fi@,tire 1 of the drawliip-,,s the wh@-,el 51 is sliowri in its rearwar(I posii@ioil', the rotary rod 38 to operate le,,c-.atli 'lie stii-face of the soil. When it is clesii-ecl to briii tlle ro(i to inoperative position., the silift 60 i@', rotated ill --i clocl@-wise dii-ection b.)T t'ile c-@,-ank 61. This actioii winds tip tl,@e cliaii C)2 oil the sliaft 60 ard brin@,s tlie ivhe,(@l 51 foi-iN,ai-d, I)rin,@ing the pai-ts to the po@;.:Itlor. indicc,.te(i i n Figui-c 8 of tli,,@ d--a-wiio-4@ iii(I tliiis 'L@lic rot,,il-y I-OCT to its illol,)C',I-@itiv(, positioii. The eriiik 61 iiiay J.)e @;(,,ctii@ed I)y a,,iy silit,.Il)le i@etaii)lii(,r irieaiis 65. Tlic,, of tlio iii@iciiiiie the uiiifoi-iiiity o woi-i@: (,'toje by tlic,, i.-otii-3, i-od is 70 tffected by t,ic positioji @it wl.iieli tiie NN,eit@lit of the op;@ritor is e--l-erted upoii the fraitie. The f ai-tliei- reirwardly tli(@ opei',,ttor.'Ls placed iil,)oii t'lic 1'riiiie,, the it., the effect t( hold the i-o cl do@,@ii t., ivc)i-k. Uii(lei, 75 cei-taiii con=;. ;.[ is to liave the m.,,chiiie woi.-Ilc ivi.tli effects, tnd, to ii-iect these con('Iit@,o,-is as ia-ell as to v-,ti-y, the i-esistaiiee wliieli t'ile. rottry rod opposes to gi-ound foi-(@es, iiic-aiis ai-c pi,ovided for faciliso tatin(y the placiiig of the driver ,it different positions ,iloTi(,, the extei)sl'oi-is 15. The ii-Iiistratiie itie@tn,@ for accomplisliiiig this piirpose illel-..-ides i plate 66 exteiidiii(Y transvei-sely of t-'i(, exteiis'oji I.,5 itid ovei.- the to i $85 thereof. 'J.'Iiis pl,.Ite lias sliort downwardyly extei,,ding ltil(ys 67 -T'Ixe(I ilear its ends and a(lapted to extend iiito aiiy pair of a series of liole@, (t8 i,@i blie -,-espective ex@Lensiolis 15. III orde'r t'o prevei-,t the pi.ate 66 fi-oin being ae- go ,-,,I(teita'Llv fi-oiii its opci-ative -)ositiori it has be@-,i adjusted and to allow for coii clit ve@li - ,iCjti,,,tineiit of the plate aloiig the extensio-.ls 15, the fo!-iiiei- is provided wit.li a i-etaiiie7-- 69 hei-ein sliown as a bar flexil)ly 95 I 1 c;ecured to the p"ate aiid haviiig lugs 70 exteri@,I-Iiig outivai.-(Ilv uiideriieatli the extensioiis 15. 'Flie lugs 70 ai-c stiffi(,ieii(-Iy spaced froiii the loiver siirfaces of the exteilsions 15 so as to tllow the ti I)in(, of the plate 66 forwardly 100 p Z, onotigli to free the piiis 67 fi-oiii the holes iii the exterisioiis 15. @Vheii tlils is (lo@vie the elltire seat stipportiiio- sti-tietti-,-e 1 la.@, b moi,ed along aiid di-opped ilito other 1-ioles li the exi tensions. An operatoi,"s seat 71 's secured irt 105 IL coiiv-2niei-it positioii tipoii the pl,,ite 66 by iiieans of a bar 72. Wli,eii the niaeli;lne is iii operation, it is ad@--.Iiita(yeous t-.t tiiiies to iiia@ntii@-i the wlieel ,-)I in C-levat--d PO t;on so ti-,at it is eiitirely cleai- 110 of tli(@ (Yi@otill(@@.i 'rliis itiay be doiie tlirotigli the Iiitiii(- of the :it-iiis 52 ai.@d 53 so that the rijig 73 oit clii.iii 74 ciii 1)(-. hoolce(l. arottii(.! the 0 et screNN, 75 seciii-ii (y the st 1) collai76 to the iiii(I-portioii of the zn pii,otal stipport for the 115 wlicel 51. "rii(-, clia-in 'i4 is secure(I at its til)- C i: X C pei@ end to a bi-a I et 7i e@ t tidiii- rearwardly t, of the friiiie aiid lixect tlereto, as clearly si,OA@@ll iii tli,-@ llrlleii the parts a,-,le o,@.--ioiie(I as iii Fi(,u-. c r) of the (]rawl@, @ , t - 120 ill,,s t-iie cli,.t-iii 74 ivil.1 (@pei-atG@ to pi-eveijt uii(lue iiiov(@iii(@iit of tli,,, ,,,tippor-tl for the wlieel r- I Wliile the iiiA-(,iiti.oii liis I)ecn de---cribe(I wiluli ret"ei-eiiee to t p!lli,,tictilar iyitellillc,, it 125 i@n, to be utidei-stoocl that it is ilot li:inited thereto I)ut is of a scol)e commeiisiii-ate ivitli the s(,-ol-)(@, of the tpp(,iided eltinis. AVIiit is