Dec. 31, 1946. ' DQR. BOMFORD l _ 2,413,429 IMPLEMENT -0R MACHINE FOR HOEING Filed Sept. 23, 1944 Fiyi ~A 2 Sheets-Sheet 1 L ATTORNEYS Dec.,3l, 1946. D. R. BoMFoRD 2,413,429 IMPLEMENT OR MACHINE FOR HOEING Filed Sept. 25, 1944 2 SheetsfSheet 2 INVENTOR ATTORNEYS 2,413,429 Patented Dec. 31, 1946 UNITED STATES PATENT OFFICE 2,41a42o` IMPLEMENT OR MACHINE FOR HOEIÑG‘ Douglas Raymond Bomford, Pi'tchìll, near' Evesham, England Application September 23, 1944, SerialNo. 555,511 In Great Britain November 18, 1943 '7 Claims. 1 This invention has reference to implements or machines employed in hoeing operations and in order that the invention may be the better under stoodI remark that in the hoeing of land on (Cl. 9’7-154) eñìciency than with such implements as hereto fore constructed or proposed. The invention resides in an implement or ma which the crop under cultivation is sown or planted in wide rows and with the plants in the respective rows set at fairly wide intervals apart the hoeing of the land which becomes necessary or -desirable from time toy time during the rais _ing of a crop involves two distinct operations, namely one whereby the weeding and loosening of the earth between the successive rows is ef fected, which is known as inter-row hoeing, and 2 by the performance of the hoeing operations can be effected with considerably greater >facility and chine for the purpose aforesaid characterised broadly in that the arms or members which carry the horizontal or substantially horizontal blades or shares proper are operated for eiîecting the requisite relative motions of the said blades or shares when the implement or machine is in use, through the medium of pedal actuated mecha nism, the said pedal actuated mechanism having in association therewith hand operable means for the other, technically known as inter-plant hoe steering the blades into and maintaining them in ing, whereby the hoeing operation is effected on 15 the desired path between the plants during the the strips of earth which separate each succes traverse ofthe machine. y sive plant in a row. The invention further resides in certain details The inter-row hoeing is commonly performed of construction of parts of the mechanism here by a horse or tractor drawn implement and the inafter described and in the implement or ma inter-plant hoeing by hand tools, but it has been chine as a whole, whether designed to operate on proposed to effect the inter-plant hoeing by an a single row only on each traverse of the ma implement or machine embodying inter alia two chine, or, by providing a duplication or multipli members so pívotally mounted on a traversable cationvof the parts such as are hereinafter de frame and having operating means associated scribed on a common supporting frame, to oper therewith that they can .beV swung towards and 25 ate on a plurality of adjoining rows on each trav away from each other, each of the said members erse ofthe machine. ' ` being furnished at 'its lower or acting end with a A convenient embodiment of the invention will horizontally, or substantially horizontally, dis be further and more particularly described with posed blade or share proper which projects there from in the direction of the middle longitudinal reference to the accompanying drawings, where- 1 plane between the members the length of the said m: blades or shares being such that their inwardly ing machine embodying improvements in accord Figure l represents in plan an inter-plant hoe presented ends normally somewhat overlap so ance with the present invention and wherein the that the blades co-_act to afford a continuous cut machine is designed to operate on three rows 35 ting edge between the members. for each traverse of the machine, two of the mech In the use of such inter-plant hoeing imple anisms provided for effecting the hoeing opera ments or machines the machine is traversed along tions being shown in the said figure, the third be the row to be hoed with the two blade-carrying ing broken away in View of the limitation im members disposed one on each side of the row and on the sizeof the sheet,V portions of the the co-acting blades lying in overlapping rela 40 posed frame members hereinafter referred to being tionship across the row so that in the forward also broken away for the same reason. motion of the machine they shear the weeds and Figure 2 is a side elevation, partly in section loosen the soil between the plants, andas the and viewed in the direction of the arrow- in blades come up to each successive'plant in the 1. ' ‘ row the actuating mechanism >is operated so as 45 Figure Figure 3 is a fragmentary-view, showing a por to swing said members outwardly or to such posi tion of one ofthe tines and a caster wheel for tion relative to each other that the blades are supporting it. ' y ' „ thereby moved from their overlapping condition In the embodiment of the invention illustrated and a gap is formed between their inner or pre the frame` structure or carriage of the machine sented ends so that they can be steered past the 50 and whereon the plurality of pairs of blade car stems of the plants without liability to the sev rying arms and their operating mechanisms are ering of the plants from the roots thereof. mounted for effecting the traction thereof is of The present invention has for its object to pro vide an inter-plant hoeing implement or machine simple and economical in construction and Where 55 rectangular formation and embodies longitudi nally extending side members denoted by the rei 2,413,429 3 4 erence 3 and one only of which is seen in the nished on its rear face with a tubular portion Ma the axis of which is vertical and which affords a bearing for a pin or spindle I7 carrying a hori zontally disposed plate I‘la to which the front ends of a pair of |handles i3 associated with the mechanism for eifecting the steering thereof, are fixed. The spindle l1 is retained in the bearing lt by a cotter pin passed through the upper end of the spindle which projects above the bearing plan Figure 1 the other being broken away, the said longitudinally extending bars being inter connected at their front and rearward ends by transverse bar members denoted respectively by the references 4 and 5, all the said members being conveniently fabricated from appropriate lengths of L or other suitable section bar metal. Where L section bars are employed in the fabrication of the frame structure each longitudi nal and transverse member of the frame may em body two such bars so disposed relative to each other that the said members are of a rectangular tube-like formation in cross section. The front transverse bar member li may be adapted for a longitudinally adjustable attach ment to the front end parts of the side bar mem bers 3, as for example by locating and fixing the respective ends of the said transverse member il in the upper ends of vertical slots 6a in pairs of 20 bifurcated plates 6 arranged one on each side of the said bars 3 and constituting brackets or arms thereon for the attachment to the vcarriage tube. The steering handles I3 may be constituted by a pair of tubular rods which extend rearwardly in divergent relationship to each other and are so upwardly bent or inclined that their rear ends are brought to a convenient location to be gripped by the hands of an operator occupying a seat I9 provided at the rearward end of the sup porting frame or carriage of the machine. The said steering handles I8 are preferably fur~ nished at or adjacent their rear ends with up wardly projecting short rods Ita ñtted with a sleeve of rubber, or other suitable'non-metallic of parts hereinafter described, the said plates 6 having in their upper parts two holes which can be brought into coincidence with two of the series of holes 3a provided in the front end parts of the material to afford convenientv grips f cr facilitating their operation. The swivelling plate lla is provided with a pair of upwardly projecting pins Hb disposed sym members 3, screw bolts 1 passed through the coin metrically on each side of the spindle i? which cident holes securely fixing the bracket plates in carries the said plate, with which pins tubular the adjusted position on the bars. 30 parts Ita on the front ends of the respective The front end of the traversable frame struc arms i3 have a swivelling connection, and the ture has a secondary transverse bar member ¿a said arms extend rearwardly and divergently associated therewith therespective ends‘of the from their pivotal connections with the bracket said member 4a being fixed in the lower ends of the slots 6a of the bracket plates. ' 35 Ila so that their rear ends at whichthe cranked portions /depend‘ verticallyr are at a greater dis The frame structure-or carriage may be fur tance apart than the front ends thereof. ' nished at its front end with means for the con The normal degree of divergence of the swiv nection thereto of draught horse chain gear but elling arms I3 and the length of the blades 2l) preferably the machine is adapted for tractor operation for which purpose and as shown in 40 which are mounted on and project horizontally, or substantially horizontally, inwardly from the the drawings it is provided with a forwardly ex lower ends of the vertically depending parts of tending draw bar` 8 disposed in the middle longi the arms are such that the inner ends of the tudinai plane of the carriage the said bar having blades lie in overlapping relationship and co means at its front end, such as the pair of per act as is well understood to provide a continuous forated plates lìa whereby it is adapted for a ver tical pivotal connection with an appropriate part cutting edge while the mechanism is traversed between one .plant andthe next in the row in on the tractor or a suitable hitch associated there with. The rearward end of the said bar 8 is rigid ly attached to the transverse member 4a of the frame structure and the bar is braced to the said member da and to the transverse member 4 by rods such as 9. ` v The rearward end of the frame structure or carriage is supported on travelling wheels lil which may be mounted on a continuous axle, or the working of the machine. ' The blade-likeV members >or shares proper ‘Pil ' maybe fixed to the depending cranked portions ' 50 of the arms I3 by the provision Yon the respective blades of a vertical> cylindricalprojection 2te of a diameter proper to ñt into‘ the tubular lower ends of said arms and to provide for an adjust able setting of the said shares the lower portion of the depending parts may be slit vertically at one side thereof and the lowerends be furnished as shown in the drawings, on stub axles i Ijcar-` ried by the inclined bar members l2, l2a fixed to and depending from the underside of the longi tudinal bars 3 of the carriage. with a collar Mib-having a slit therein coincident with the slit in the tube, the lparts of the collar , Each arm I3 of the pair comprised in the hoeing mechanism, or in each such mechanism where more than one is provided on the carriage', is constituted by a crank-like member, the said crank-like members which may be formed from 60 said boltserving very securely to clamp the blades in any position to which they may be ad justed on the ends of the arms i3. The arms I3 are preserved in vtheir normal a single piece of appropriately bent :metallic tubing, or, as shown in the drawings, from Ytwo connected pieces of tubing, being disposed in ver tical planes and extending longitudinally rear wardly from their connection as hereinafter de. scribed with a plate or bracket l5 having a swivel mounting on a horizontal spindle Iñmounted in 70 bearings provided by lugs i6 carried by the lower , ` ` ’ The said swivelling plate or bracket lllis fur-A degree of divergence relative to each other as seen in full lines in Figure land are adapted to be moved'or swung from suchcondition'for the purpose of carrying their blades or shares 2B out of overlapping relationship as indicated in dotted lines on the right-hand mechanism in _Figure 1 so as to form a gap between the blades front transverse bar ¿la aforesaid of the carriage or frame. adjoining the slit having outwardly projecting lugs through coincident holes in which a screw bolt is passed, the tightening up of a nut on the is which _permits them to pass ,the >stems of ‘the plants in the forward traversing Vof ‘the machine. by the provision inasso'ciation with each arm 2,413,429 5 I3 of a bar or link 22 which has a pivotal attach ment to or abutment against a pin or stud I3c» on the arm, the links associated with the respec tive arms 'projecting inwardly in oppositely in clined directions and their inner ends having a pivotal connection with lugs or projections 23 disposed at diametrically opposite points on a plate or disc 23a which is furnished, on a diame ter at right angles to that on which the lugs 23 are disposed, with laterally extending arms 23b which are respectively in operative connection through rods 23C with pedal actuating mechanism mounted on the steering handles as hereinafter 6 have with the disc 23a linked to the respective arms I3, co-operates with the motion which is given to the arms through their connectionvwith the plate I'Im which turns angularly with the steering handles to effect the corresponding Steerage action of the arms and the blades or shares carried thereby. One of the steering handles I8 is, or may be, furnished with a stop such as 3i to co-act with a'projection on the adjoining arm, conveniently the pin or stud I3c thereon, to limit the outward swinging motion of the arms I3 when the ma chine is in operation. y - The weight of the arms I3 and the other parts The said armed plate or disc 23a is adapted to 15 associated therewith for their operation and the steerage of the machine may be borne by a turn on a central vertical axis or pivot 24 mountn spring suspension of the parts from the main ed in-a bearing carried by a cross bar 24a iixed frame or carriage, >a suitable spring suspension in suitable location between the handles or rods embodying a pair of coil springs 32 the lower ends I8, and a coil spring 25 which interconnects the arms I3 at points between their front ends and 20 of which are attached to convenient anchorages on the aforesaid cross bar 24a carried by the the points thereonV with which the links 22 ccn~ steering arms or handles I8, the upper ends of necting said arms with the disc or`plate have said springs being attached to an interconnecting pivotal connection, co-operates with the said disc member 32'a fixed to the lower end oi a chain and links in maintaining the arms in their normal 25 33 the upper part of which is looped around a condition. rod 34 extending transversely above the frame The pedal actuated mechanism provided for or carriage, its respective ends being mounted on eiiïecting the turning motions of the armed plate pillars or standards 35 provided on the longitudi or disc 23aL in one or other direction for moving nal side members of the frame or carriage. the arms I3 from the normal condition to the The chain connection of the springs 32 with the relative positions for forming the gapA between 30 rod 34 affords a ready means of adjusting the the blades embodies two plate~like members 26, height of the suspendedrparts relative to the one for supporting and taking the pressure of ground level in order to compensate for the vary each foot of the operator, the said plate-like ing degrees of downward pressure which may be members having ,upwardly bent parts 26a and 28b at their rear ends and outer side edges respec 35 exerted on the handles and pedals by operators of diiîerent physiques. tively for locating the foot thereon and prevent In lieu of this spring suspension of the arms ing its slipping from the pedal. y I3 and associated parts, the vertical limb of each Each plate-like member 26 has a swivel mount» arm VI3 may, as is illustrated in Figure 3, have a ing on a laterally projecting pin 2ï provided at or adjacent the lower end of a bar 23 and the 40 travelling wheel?! mounted thereon, the mount» ing of this wheel being effected by providing the upper ends of the saidbars 2t 'have a swivel vertical limb of the arm with ar tubular part ¿3b mounting on a horizontal rod 29 extending be« in which the vertical part of a cranked rcd 2i* tween the steering rods and carried in bearing carrying the wheel rits and turns so that the brackets 30 appropriately located on the respec 45 wheel can swivel caster-wise. tive handles I8. described. ' Each swivelling pedal plate 26 is connected Where a" plurality of hoeing mechanisms is through the medium of the rods or wires 23C aforesaid with the outer end of the respective side arms 23b of the rotatable plate 23a with which the arms YI3 have the link connections aforesaid, mounted on the frame or carriage a separate seat Iâ may be provided for each operator or the seat may be made continuous from side to side of the carriage or frame and the said seat or seats may be supported on the frame by metal» the rear end of each wire 2t!c having a swivel connection with a lug 2$dron the respective pedal lic bars or strips Iiia the rearward ends of which and its front end a similar connection with the ~ are upwardly cranked and'connected to the rear armsv23b on the rotatable plate 23e, and it will be appreciated that by exerting pressure of the end cross member 5 of the frame, the front ends foot on one pedal, the left hand pedal when the parts are arranged as shown in the drawings, and relaxing the pressure of the 'right foot on the right hand pedal thedisc 23a will be turned in a direction which acts to` move the arms I3 to the relative positions- for affording a gap between the blades or shares 2B, while pressure by the cranked and having a bearing or lodgment on a i right foot and the relaxation of pressure bythe left foot will turn the disc in the reverse direction thus bringing the arms back to their normal con dition, the spring 25 which has been expanded by the outward turning of the arms assisting in Y the return of the parts to the normal condition. of the said bars or strips being downwardly rod 3S which extends transversely across the v’trame its respectiveends resting on the down wardly inclined bars or rods I2a aforesaid and being located and ñxed between brackets such as 3l provided on the said bars or rods I2a. It will be appreciated that considerable vari ation in details of construction of the parts de scribed may be made without departing from the nature of the invention. ` ' > An implement or machine in accordance with this invention may readily be yadapted for the performance of hoeing operations close upto the respective sides of a row, or rows, of plants Any steering of the mechanism which may be requisite due to the successive plants in the row 70 wherein the plants are set so closely that hoeing between the successive plants by the machine is not being in strict alignment is effected by swir1g~V ' impracticable, such adaptation being effected by ing the steering handles I8'in one or other lateral the provision for use in association with the direction on their front end pivot I‘I according to Y vthe direction and extent of the Steerage necessary » pairs of blade or share carrying arms of means and the connection which the said handles I8 75 whereby they can be temporarily fixed at such 2,413,429 8 degree of divergence relative to each other that pivoted on said fra-‘me to swing laterally thereof a gap of any predetermined size is maintained between their inner or presentedA ends, Qon swinging said arms thereby. and carrying said pedal actuated meansV for i ` ' 5. A machine. for inter-plant hoeing, compris venient means for the said purposemay be oo_n stituted by a rod or bar of appropriate length and the ends of which are adapted-for engage ment with pins or studs suitably located on the ing a traversable frame, a pair of arms pivotally connected thereto for swinging movements later ally of the> frame, blades mounted on the respec respective blade-carrying arms, so that the rod or bar extends transversely between the arms to maintain them at the requisite de_gree’oi tive arms to swing therewith into overlapping cutting relation and into separated relation to form a gap between them, pedal actuated means divergence. I claim: for swinging the arms laterally in relatively op 1. A machine for inter-plant hoeing, compris ing a traversable frame, a pair of arms connected thereto to move laterally thereof and carrying blades movable by the lateral movements of said the other of said relations, and manually oper posite directions to bring the blades into one or~ arms into overlapping cutting relation and into separated relation, and pedal actuated means connecting said arms for simultaneous lateral movements thereof in relatively opposite direc-~ », ated means for swinging both of said arms to ward one or the other side of the frame for steer ing the blades embodying a pair of handles pivoted on the frame to swing laterally thereof and connected to said arms, and a rod extending between and connecting the handles, said pedal actuated means comprising a bar suspended from tions to bring the blades into said cutting` and separated relations. 2. A machine for inter-plant hoeing, compris on said bar. ing a travez-sable frame, a pair of arms con nected thereto to move laterally vthereof and .y a. traversable trame, a pair of arms pivotally connected thereto for swinging movements later carrying blades movable by the lateral move ments of said arms into overlapping cutting re aily of the frame, blades mounted on the respec lation and into separated relation, and pedal ac tuated means comprising a pair of pedals, and means connecting said arms and pedals for ~ rod, and a pair of pedals pivotally mounted n machine for inter-plant boeing, compris tive arms to @wing therewith into overlapping cutting relation and into separated relation to form a gap between them, pedal actuated Vmeans .for swinging the arms laterallyin relatively op simultaneous lateral movements of the arms to posite directions to bring the blades into one or bring the blades into overlapping cutting relation the other or" said relations, and manually oper ated means for swinging both of said arms to by operation of one of the pedals, and for-simule taneous lateral movements of the arms to bring ward one or the other side of the frame for steer the blades into separated relation by operation ing the blades, said arms and manually operated of the other pedal. steering means being connected to the frame for relative raising and lowering movements, and a spring suspension mounted on said frame and yieldingly supporting arms and steering - 3. A machine for inter-plant hoeing, compris ing a travel-sable frame, a pair of arms connected thereto to move laterally thereof and carrying blades movable by the lateral movements of said arms into overlapping cutting relation and i?. A machine for inter-plant hoe/ing, compris into separated relation, and pedal actuated means ing a traversable frame having _a seat thereon for comprising a pair of pedals, a rotatably mounted the operator, a pair of arms pivotally connected member having links connected to its diametri to the frame to swing laterally .thereof andcar cally opposite sides and to the respective arms, .45 rying blades movable by the lateral swinging and links connected to other diametrically op movements oi the arms into-overiapping cutting posite sides of said member and to the respective reía-tion and into separated relation to form a gap pedals for rotating said member by operation of between them, a pair of handles pivotally .con one the pedals to bring the blades into cut necL _d to the frame to swing in unison> laterally ting relation and for rotating said member in an and extending to a position adjacent to opposite direction by operation of the other pedal the operatorie seat, a pair of ¿pedals pivotall ’ sup to bring the blades into separated relation. ported by the handles adjacent to the operator’s 4. A machine for inter-plant hoeing, compris seat, mechanism carried-by the handles andoper ing a traversable frame, a pair of arms pivotally Vatively connecting said arms for simultaneous connected thereto for swinging movements lat lateral swinging movements lthereof in relatively erally of the frame, blades mounted on the re opposite directions to swing the blades into rcut spective arms to swing therewith into overlap ting or separated relation, means connecting one means. ping cutting relation and into separated relation v ' y of the pedals _to said mechanismto operate the to form a gap between them, pedal actuated latter Yto swing the blades to cutting ‘relation means Íor swinging the arms laterally in rela 60 when said pedal is operated, and means connect tively opposite directions to bring the blades into >one or the other of said relations, and manually `operated means for swinging ~`both of said arms toward one or the other side of the frame for steering the blades, embodying a pair of handles ing rthe other pedal to said mechanism to oper ate the latter to swing-the blades to separated re lation when said other pedal is operated. DOUGLAS RAYMOND BOMFORD.