claim: 1. A cult ' iv,,ttor liaATing ,t ivheeled frame, a tool slipportino- ctrao- bar pivotecl to saicl fr @ii-qe, a spring connected to ,t foi-ward part of the fraine aiid exteiidino, past tlie pinot, 100 an cl inoans comprising a collar ,icljustible aro und the drag b,,tr and 1-iaving a serrated po rtion acl,,tpted to bear against ,t stop on tlle drig bar for varying the efiective action of the sprino- in biasing the drag bar to 105 tlie riglit or left ivhen it is molted in either of these directiol'is olit of norlllll position. 2. A cultivator 1-iavilig a )vheelecl fraine, ,t drag b,,tr coiiiiected witli the fraiite so that it inay be savung in a vertictl 1)1,,tne, @.1 spriilg 110 soi -viiig to b@Llince the (Irag bar and to ,tssist iii raising it to transport position, and iiie,,tiis ass ociated -with the spring for Litilizing a po rtioll of the spriiig to form ,t resilient stop pe rmittiiig the clrag b,,tr to 1-iLve a - limited 115 do wnward movement from its normal opera ting position. 3. A cultivator 1-i,,tving a Nvl-ieeled frame, a clrag bar connected with tl-ie frime so that it m be s-wung in ,t vertic,.tl qncl in a hori121 @1 70 nt,tl pl,,tne, a spriiig serving to btlaiice the drag bar, to assist iii raising it, to biq s it in ,t liorizontal clirection wl-len it is mo ved out of tlae line of draft, aiicl means ass oci,,tted -,vith the spring for cal,,sing it to 125 act ,is a resilient stol) to permit tlie drig b,,t r to have -L limited-i-iaoveiiiei-it dowiiwardly from its noriiial operating position. 4. A cultivator having ground wheels, an arched axle between the wheels, drag bars 130

1,526,873 pivotecl to said cultivator, ,t utiidiny pole, longitudinally extendiiig bracin@, embers connected to the sides of the ,trched axle, the rear ends of s,,tid braces fori-iiiiig supports for lioldin- the cultiv,,ttor drag bars in traiisport posii@ion, the froiit ends of s-,Lid braces being connected to the guiding pole, spriiigs connected to the front ends of slid braces and extending rearwtrdly past the pivots of the drag bars, tl-ie re,-Lr ends of saicl 10 spi-inals beiiig adjust,,tbly connect6d to said drao- bars. In testimony wliereof, T affix i-ny signature. JOHN P. SEAHOLM.

Patented Feb. 17, 1925, 1 526@873 UNIT,ED @STA@TES PATENT OFFICE. ,TOI-1111 P. SEAHOLX, OF TIOLINE, ILLINOIS, ASSIGNOR, BY MESNE ASSIC--LVMENTS, TO XOLINE PLOW COMPA-NY, INCOR@PO,.-RATED, OF l@l:QLTNE, ILLINOIS, A CORPORATION OF VIRGINIA. CULTIVATOlt,@ Application filed February 9,1922. Serial No. 535,127. To all who7n it m6@i/ concern Be it kno-%in tbtt I, Jo@.,-i-@N P. ,i citi7.en of tl-ie United St,,ttes, residilig tt 1138 14tli St., Moliiie, coti3.).tv o'l Isl@ind, St,,tte of llliiiois, h,,tve i-nveiitpd cei,tiiii new ai-id useftil Iniproi,einents iii CtiltiA,@ttors, of -which the follo@viiig is ,t specific,@l.L'idii. The i!iiventi.oll. relites tO c LiltiA-,,),tors. The geiiei,.ql object of tl-ie ii-tATeyitioii is to 10 provide a simple, officieiit cilltivt,,tor that ciii be inexpeiisiveli, i)rodiieed. A f Lirtl-ier object is to piiovide t li,,tviii(v ineai-is fol-- a@ssistili@@ tlle opol-titol' il@'i lioldiiig tlie till,.ige tools to oi-ie @- ,Icle or 15 line of draft ivlien stieli position is necess,,ii-v diiring oper,,Lti On. Otlier objects ,tnd ,tclvant.a,,2@es, oT the inventioii -will appeii, from the specificatioil ancl drawings. 20 An embo@limeiit of tl-ie inite, tio s 11 @ii is, tr,tted in the drtivifigs iTi Figtire I is t side eleA7atioii of tlio tor showijig tl-io dra,o,- bai- ill full lille@,i iq it@, loiverec@ position ,ti-id p,,irtli, ii-i@ clotted Iiiries 25 in i@ -,s I'lised positiol-l'. Fi@,rLii@e 2 is a plci,@n view of tlie etiltivi:toi-@ Figtire 3 is a pii-ti,,tl pl,,iii i-ie)v of tl-ie ciilti,t,t@oi- sliowiiig p,,irtieLilai.@ly the ,t sos ei,,tt(,d ivith the drag b,,ir fc)r 1),,il,,iiiciiig it 30 ,illd for biisiiig it toj@eitl-ioi@@ the rip.@lit, oi@ left (f tl-ie'line of, dr,,ift. Fip,,ure 4 is,,t detailed itiew ei-i(I e ,iii adjustable niic ii@ i, lev,,, ioll of co etio -- f,) tli(, b,il,,tllcli,ig spring of the etil.tivttor@ 35 Figure 5 is ,t sicle eleitatioii of tL-e collinection illiistr-,Lted iii Fioiire 4. r', r, igure 6 is ,t perspectiit@. iTieNiT oT the coiinection illtisti-atecl in FioLire 4-. Figure 7 is a det-,iiled cross sectioii 40 the clainp for holdino; the ,txle ii'l. pl,,tce. Tl,ie etiltia,ator coi-iiprise,-, ii-i wheeled frame , of spejif,,l col'istriietibii i. Z, i,io, ,t, pair of cirag D,,ti@S I and rneai-is@ c.op@,prising spriii,2,s 9,'foi- balaiaci,@i(y aiid@ bi,,isiiia: 45 the drag ba@rs' as will be (lescribed. @Tbo fraiiie inelti'des ,i pair of erink a@,lles 8 and 4 iv,laicli stippotit on tlieir loiver wrist portiops,@, the N@,.he@is 5 ,tna 6. The portions 7 of these txles are beiit OiitAvpL-dl@iT 50 th,,tt is, (see Fi(,- 2) tlie@ axles first ATertically ,t short clistanee froi-ii the eriial;@ ),,-i-ists, tre t-lien iiieli:ned oi.,@tlvti-clll, to-wtii-(l the -",heels ,tfter which they agiin i@i-se veiticilly qiid are bei-it toi,iiiii-ia,tin(y i,,i lioi.@i- 55 zontal portioiis 8 aiid 9. This sliape foithe cranl@c ixles provicles aii opeiiin,@- tl-ii-oiigli the ceiater of the ciilfivgtor -%vl-iieli is i-vid-or - ,Lt the top tli,@in at the bottoiii,,. therel)y ing thecultivqtor inore rooiii to clear ei.-ops 60 h,,tving btishy tops stiel-i ,ts cottoii aiid corn. The 1-iorizoiital portions 8 @iiicl 9 o'L . t 1 i "ixles are substaptially . parillel throuo;li openiii2@s iii the separatc,,cl @ncis o-f tnvo toliglieinei@ibevs 10 ,tilcl It@ ivl@ii(,Ii eoii.- 65 vere for'Wardl)T to It 1 p(i it 1_ to -'o I i, th(, otil tiv,,ito@r toligiie to Nv l-licll is iieck yoke 13. The ii-iellibei@s 10 iii(I It br,,iced neaitheir rear ends I)v 9, met@il L),)l box 15 which also sei-ves to support P@ doiible@- 70 tree 16. The p,,tr,,tllel hoi,izoi-ital eiid o-f "IA(?, 9 1 a.xl es are elciiiil)ed to,,,)@etTier by iiie@,-71S Of @ll clan ip 14, illustrited ii-i det@,til ii,, Figiii,@e com prisiiig tivo flat bai.s coi-iiiected b.)r bolts. This eltimi) preATelits ivc,,,ii,ino- oi- latei , @,il dis- 75 plac emeiit of tl-ie cl,,t mp the axles m ty be ii-ioi@ecl the holes iii the i-iieii,,bers 10 ,,,id 1-11 to @illeiease oi, decrease tlie, ivicltli of the ii-laclillie. E @xtencling forlA"Lrdly froill the ivi-ist Por8 0 'Lioiis of the cr,,iiil,: axles "cre conirei@gin 9 o@ bra ces 17 ind 18, aiid 19 and 2 resIDectively, wliieh are coniiected together at their forward eiids, al'id also connectecl to braces @l exte iiding up-wardl37 aiid re,,tr-wardly ,Liid 85 con nectod to the vertical poi-tions of the crlnl c axles by clamps 2-9 -Lnd 9-3. Th6 recir eiicl s of the braces 21 are bent dowii-wardly to fotm hooks 24 for the receptioii of the dra g bars I wheii they are elevated t6 in- 90 op,,:, rative position for transportation purpos es. Brtees 9@5 coiinect the braces 21 -with the toiigue n-ieinbers 10 and 11, tlie,.ze braces ser ATing to hold the axles and the strLictLires carr ied by thein in proper ,tngular relation 95 to tlieotoiigue or, in other words, they coniiect -tlie parts so ,is to combiiie thern into a rigid framewoi@k, A. plurality of holes 26

1;526,873 are provided iii the tongtie iiiembers 10 and 11 so that the point of coi-iiiection of tl-le braces 25 iiiay be viried iii case the axles are sep-,trated or brought closer togetl-ier for increasing or decreasing tlie A-,,icltl-i of tl-ie cultivator. This combinalion coiistructioii procltices ,t frame frolii ,t iiiiniiiiuiia number of p,,Lrts. The ,txles alicl toiigiie, -\vliieh perforin their 10 iiormal fi-,netions, are also 1-itilized as a g,,-otincl work for the fraiiie, aiid the braces for coiinectiiig these parts together are so ,ti-i-aii ecl th,,Lt they serve t plurality of purpose,s thereby ,tvoidiiig the necessity for 15 iiuiiierotis parts each acting in @t single e,,tpacity. All parts are pre,erably macle of iiietal, tl-ie tongiie, i-iecl@-yolK:e aiid dotibletree beiiig m,,ide of chaiinel iroii alicl the axles from metal b,@irs. The constructioii i.s sim20 ple and iiiexpei-isive biit, at fl-ie same tiine, ri,aid and durable. Not oiily does the sliape of the crank axles pi-ovide ,t cultivator li,,tvii-i(y a good center clearance, but the positioi-i of the braces 18 25 aiid 19 also scries to cratl-ier ancl lift falleii plants, sucli as corii stall@s aiid @-yiiide tl-iem t,l-irotigl-i the ceiiter of the cultivator. If these braces ivei-e abseiit, or,, if they Nvere not sli,,tped substantially as illustrated, there 30 i-vould be, ,i tencleilev for the f,,tllen plants to c,,,tteh on the culti@ator ,tiicl be brol;@ell off. The forivard eiids of tl-ie braces are Nvidely separated so that tlie-v ca-@i easily gither iii the plaiits .ind o-ently o,uide tl-iem to-ward the 35 lar(re opeiiiiio- -v,-here they eisily cle,,tr the cultivator. The clrag bars I cari-v sliovel brackets 27 A@-Iiieli are pivotecl to the bars to siviiig ,tboiit i-ei-tic.-LI axes. A Iiiil@ 28 is pivoted to eacli 40 bracl@et aiicl to a projection 29 on sleeves 30 iiiouiitp-cl on tlie cranl@ axle ivrists, the Iiiil;@s being substantlall@- I)ai@allel i-.o tl-ie (-Irag I)ars. by a connection 31 ,vliieli I)ei-ii-iits it to sayin45 ill a horizoii.t,,tl I)IaDe, inovei-i-ieiit, iii -,-L vertical plli)e beino- obtaiiiecl b@, i@otitioi-i of the sleeites 30 oii tl-le axles. The fliiietion of the linl@s 28 is to iiiaintaiii the sliovel brtcl,:(-ts 26 ancl their sl-ioi,els at right aiio-l,s to the 50 clirectioii of tr,,ivel of the cliltiv,,ttor wheii tl-ie drag bars are swiii-iy to oi-ie sicle or the other. such actioii being seelired by the p,,tr,,Ilel iiiik niotioii of the dr,,tg b,,ti.-s and linl@@s. Tt ivill be iioted that there ,ire projec,tioiis .55 29 on eacli sicle of tl-ie poiiit of coiinection of tl-ie dra(y bars to the sleeves 30. This m,,tl@:es the sleeves interch,-Lngeable @iiid it ',Ilso i-iial@es the clra,)- b,,trs iiiter cliai-i@_ye,,ible, thtt is, the riol@lit-l-i,,tiid dri- bar in Figure 2 c,,Ln C)O be exclianged ancl motii-itecl -wbere the lef-t one no-w is aiid vice verst. The operatii,e positio,@'i of the drag b,,ti@s is sbown ii-i ftill Iii-ies in Figure I and the inoperatilte position iii dotted lines, the di-ag 65 bars being siipported in the 1,,ttter position E-.tcli dr,,ig bar is pia,oted to the @O by the hooks 24. In order to prevent the drag bars from being jarred out o-L' the hooks while the ctiltivator is being trailsi)orted.' 1,-ttehes 32 are provicled wl-iieh are pivoted to tl-ie braces 21. The latches lili,e bent por- 70 tioiis aclaptecl to hoolc in behiiicl the shovelcai-ryinff braelk@ets 27 on the, dra(' bars as illtistrtted iii Figtires I and -9. The drag bars ,tre thus loclred against upivarct iiioveiiieiit -Lintil the latebes 32 are tl-irowii bael;@- 75 ivai@cl to the ftill Iiiie position illustrated ipFigure 1. This is ,t siii-iple, -vet effective construction, \vl-iich seciires ,t latc'hin(y actioii with the tddition of olily one siiiiple pai-t, the lptch beiit ol-it of a strip of 80 n-iet,@il, the coopei-ating parts being eleit.'eilts that are necessarv lii tl-ie c-Liltivator consti-tictioi-i exclusive of tlle lateli. The sprin(ys 9, are coni-tected to the forivard part of tl-ie fi-,Illte preferably at tl-ic,. 85 juiieture of tlie, coi-ivergil-ig brac(,,s 17, 18, 10 and 20. These sprino-@s exteiid rear'Wll-dly p,,tst the pivot of the clrag bars to tlle eultivator al-id ,tre eoni-iected to the drt(r birs I'@ b3, iiieans of an ,icllustal)le device 33 illiis- 90 tratect in det,,til in FiO'Ilres 4, 5 6. 'NITheii the drarr birs -,ire in the i-ioriiiql line of clraf-t. that is, at stibstanti,,tlly ri ' (,Yllt aii-gles to the cliltilrator axles, tl-ie spriiios 2 are directlv over the pivots of the clra(r bars aiicl thev 95 -,Ive I 0 effective actio-n in sw inq:ijia the clra(r bars to either tl-ie rigbt or left, but as sool'i as the dria: bars Ire moved eitl-ier to tl-ie right or left, 'L,be, springs plss the ceiiters of tl-ie pivots of the drag bars 9.1-1cl iii iiiiecli- 100 ,itely exert ,t bi,,tsii-is@ ,,ction -wl-iieli inere,-Lseg as the clr,,tg bar is iiiovecl -from the line of clraft. The purpose of tl-iis construction is to provide a nicans for ,tssistin- the o])erator in 105 1-ioldinu the si-tovels to one sicl.e of tlie line of draft. This is freqLiei-itIV necessary in etiltivating, biit becoia-les (liffictilt ,ii-icl tiresome bect-Lise t]-ie tendency of the dr,,tft is to p7Lill the sbovels an(I the (Ir,,i(, btr bacl@ 110 itito t-he line of clraft wl-ienever an attempt is m,,tde to 1-told it to one sicle oi- tl-ie otl-ter. Witli tl-ie above coiistriietioii, ivhei-ieier tl-ie oi)erator moves the dra,7 bar to one sicle of the line of draft, he is' assisted in liolding 115 it tijere by tlie tension of the spring, ti-te eftective force of -wbieh increases as tlle drag bar is inoved f,,,rtlier oiit of tl-ie line of draf4L,, ,tncl as the drag bar bee,omes lit,-clor to liol(--l to its -worl6ng' 1,)Osition. 120 The adjlistable connectiniz device 33 comprises a collar whicli is slicleable and rotat,,tble oii the drafl@ bqr, tl-ie latter being illustrated as a cvlindrical roci. The forw,,trd edp:e of tl-ip, collar cont,,iins a T)Itir ,,tlit-,y 1-25 of serratioi-is 34 -wliiel-i enfrft(ye a pin 35 carried by tlie clrag b,,tr. TI-i@ sprin(,@s 2 are connected in notel-ies 36 in the upper ends of arms carried by the collars. When it is desired to vary ihe effect of one of the 120

spriiigs 2, tl-iat is, wlien it is dc-,sircd to iiiake the spi,ing ]3ias the clrag bar iiiore to the ri,ol-ht or Itft tliaii to tlie@left or ri,)-ht the ,tncl ro -'n ' sleeve "DS is slid bickward , tated to shift the ari-ii to the i.-iglit or left, after -@vliieli thG, collar iS PLISII(,@t back iiito contact witli the pin 35, flirtl-ier rotati6--q being preventecl because of the sei-ratioiis. TI-tis adji-istli-ient has the added adv,,iiit,,ige lo tl-iat, by @iieans of it, the tension of the SI)riiigs iiiay be Litilized to iii,,tintaiii the drag bar in position wben the shovels are s-It at aii aiigle to hill the crops. For exaiiiple, stip@pose the sl-iovels are set to throw the dir'Li5 iiim,ardly. Iii sucli case, the reactioii tends to tlarow the drag bai,s otitia,ardly, but by g th coll,,Lrs so tl -iat their top por eadjustin ons are iiiove -wardly, the spriiigs are ti @d in brought into action to cotinteract the tend20 eiic3, of tl-ie di-au btrs to move otitwardly. The operator is tliiis relicied of the constant strain of plisl-iing inwardly on tlie di-@ae, bars. This adjustmeiit can be iiiade witliout dest;royino: the usefliliiess of tl-ie spring in 1>5 biasing the draly bar to the rio'l-it or left when it is mov@cl in either of Eliese directions. In addition to biasing the drao; bars to the right ancl left', tl-ie springs 2 ilso serve to vert 3o btlaiiee tilem in It -,ea direction and to forin adjustable stops for regliltting tl-ie deptil of'cultivating. Tile vertica,l balancing action is secured by reason of tb6 f Qct that the spriiigs are 35 always under tension aiid, -whenever tl-ie draz bars are lifted vertically a sl-iort distance -Lbove theii- worli@ing position, the leverage of the spring on the drag bar iiner(,,ases so that the f@rce of tlie. spring be40 comes inereasiiio-,Iv effective to raise the drao, bars. By properly clioosing ai-id adjusting the spriiig, the drag bars in'lty be nic@ly btlanced AAhen in the@i@ opei-ative positioi@, ,tnd at the same time, the spring Avill ,tct to .45 g,ently raise the bars wlien the operator gives tlieiii'a slight upw,,trd pusli toward inoperative position. The depth regtilation is sectired by providing a connecting device, 40 in the form 50 of -t @6in fastened at oiie end to an ,tdjustable clip 41 on tlae sprino, 2 and at its otlier end in It lioolc 42 on tlie brace 21. The length of the c'hain is stich that, as the drag bar is lowered, the cli,,tin arrest-, tl-ie move55 iiients of the spring 2, wl-iieh, in ttirii arrests tl-ie donvnward iiiovement of the bar. One positicii of the parts is illiistr in Fio;ure 1. Tlae deptli to which the is lo-wered may be varied by varying the 60 length of tl-ie el-iaiii 40 by changing the, linli: WI-iieli is Tiooked in tlia hook 42. The stop cir depth regulator that is thus provided is a resilient one, th,,tt is, the portion of the spring 2 to the rear of the clip 41 permits 6is the operator to push th6 drag bar and its slio A7,els (lo @A,11-"7 ai@@tly a Iiiiiiteci tiiiotint, suel-i tcti on s.iiitl)13, str ng tl-i@I'L I)Ortioll of the Sl,) I'illg to tll r f the clip. Tll"@s perperator t ii-ioii-ioi-it,al-il), etiltivate iiit, the o clecper than noi-i-iially Ai,,itl@iotit losiii(y the ad- 70 Aantage of thc@ iiiitial adj Llstiiient. The oiie spriii,g accor(, ingl3T Perl'(1-Ifis folir functions, tl-iat is, it balaiices the dra(r bars in a vertical direction; it tlso biises zn theiii to the riglit or left to assist the opellator in 75 holdiiig the sl-iovels out of the line of draft it acts to hold the cirag bar in i:)osition wben the shovels are at an anole; tincl it serves as an adjttsttble resil@'@en@ deptl-i regulator. Al.1 these actions of the spring iii,,ty I)e varied 80 by aljusting iiieaiis periyiittilig quieli 111 ion@ 9-nipulat :r rom tlle , ve description and the drawq 0 ings it will be appi-eciated that 9, cultivator cot -istriietion has tl-ius beeii providecl which 85 is extremelv sim le; one in which the vlriI p ou s necess,,try parts are made to perforiii flin ctions ii-i' addition to what tl-iey ordinar ily perform; and oiae iii Nihiel-i cei-tain ne w functioiis are secured. go It will be understood that the structure sliown is for purposes of illustration olily an d that vari,,ttions i-iigy be made, therein wit hout departing from the spirit and scope of the appended clailns. 95 I