Патент USA US2110984код для вставки
March 15, 193.. ‘ L, uBuRKEs 2,110,984 HARROW Filed Dec. 30, 1936 3 Sheets-Sheet l R. 5% 3% ( 51; Inventor Zea E‘Bza rii‘as, Ba???” 19W?‘ Attorneys, March 15, LAII . L_ U_ BURKES I A iiorneys March 15, 193. L. u. BURKES ' 2,110,984 HARROW Filed Dec. 50, 1936 5 Sheets-Sheet 3 \\ \\ My %\ mNMNv %Nliv l| , ~ .\ \ \ ‘ \ \ \ Inventor By“ Mna Attomg'ys I Patented Mar. 15, 1938 2,110,984 ' UNITED STATES PATENT OFFiCE 2,110,984 HARROW Leo U. Burkes, Richton, Miss. Application December 30, 1936, Serial No. 118,415 5 Claims. ,Tlm's invention relates to soil conditioning and cultivating machines and has reference in par O ticular to what may well be called a convertible type harrow, that is, one which may have its multiple spring teeth arranged to function as a customary V-shapedstyle, or may have the teeth obliquely angledwith respect to the line of draft to perform as a so-called side harrow. numerals are employed to designate like parts throughout the various views: Figure 1 is a top plan view of the complete multiple purpose or convertible barrow con structed in accordance with the principles of the present invention showing the old as well as the new features. - Figure 2 is a side elevational View of the rear “structurally. Visualized and compared with end portion of the arrangement depicted in Fig prior. art harrow constructions, it will be observed that the adopted harrow is characterized by a frame unit, a beam intersecting and adjustably connected to the central portion of the frame unit, bracing means for the beam, and steering andmanipulating handles. for the walking at tendant, there being a plurality of spring teeth connected with and dragging behind said frame underneath of the handle.- This general struc tural arrangement is, of course, common to the ure 1 calculated to show to advantage the gen eral relationship of the horizontal beam with respect to the spring teeth and improved holding means therefor. Figure 3 is a bottom plan view of the ractangu lar frame unit showing the two distinguishable positions of the adapter blocks, the stirrup clamp teeth are provided for conversion results. The essence of the present invention is re?ect ing means being omitted for clearness of illus tration, one block being disposed at right angles and the other at oblique angles. Figure 4 is a top plan view of one end portion of Figure 3, that is, a view observing the right hand end portion of Figure 3 with certain of the other features omitted for clearness of illustra ed in the adoption and use of a substantially rec tion of parts. trade and it is also a matter of common knowl-. edge that quick detachable and adjustable spring ' Figure 5 is what may be called a full size view tangular frame unit provided with a plurality of improved bodily adjustable clamps so constructed of one of the multiple lug-equipped adapter as to serve as stirrup-like hangers for the shank blocks or members. Figure 6 is a section taken on the plane of the portions of the spring teeth, the clamps and frame unit being so constructed as to permit the teeth to be disposed at direct right angles to the frame unit for individually or collectively adjust~ ing to assume substantially oblique angled posi tion with respect to said frame unit. Stated more speci?cally, the chief novelty re sides in the provision of a frame unit character ized by spaced parallel bar members having their lower edges formed with keeper notches to selec tively accommodate distinguishably usable reten tion lugs on the block-like adapter forming part 4 0 of the clamping means, said adapter being sad dled in the hanger stirrup or ?xture which is, in turn, secured by set screw or the like to asso ciated retaining means cooperable with the bars of said frameunit. 1 Although novelty is predicated on the notched bar construction of the frame unit as well as the stirrup-like hanger members, the speci?c novelty in chief has to do with the multiple lug-equipped block-like adapter which is in effect the holder 50 (Cl. 55—152l) for the shank portion of the associated detach able spring tooth. \ ' Other features and advantages will become more readily apparent from the following de scription and drawings. 55 . _. In the accompanying drawings wherein like line 6-~6 of Figure 1. Figures 7, 8 and 9 are additional sectional 0 views, on an enlarged scale, taken on the planes of the lines l—'l, 8-8 and 9—9, respectively, of Figure 1. Reference is had ?rst to the general assemblage depicted in Figure 1 of the drawings. Here the spring teeth are denoted by the numeral ill and have downturned hooked ground-engaging ends l I as shown in Figure 2. This is, normally speak ing, a ?ve~tooth harrow and the forward ends or shank portions of the teeth Iii are adjustably clamped in holders carried by the aforementioned rectangular frame unit 12. The numeral i3 des ignates the brace while the numeral it indicates the beam to the forward end of which the source of propulsional power is connected. The cus 45 tomary attendant-controlled handles 15 are shown at the rear. The intermediate portion of the beam intersects the central portion of the frame unit l2 and is adjustably attached to the slotted extension or ?ange It’ as indicated at the point ll. Reference being had now to Figure 3 it will be observed that the ever important frame unit I2 is of general rectangular or longitudinally elon gated form and includes spaced paralleLsup 2 2,110,984 porting bars or members 18 having keeper notches l9 and 20 formed in the lower surfaces or edges thereof and arranged in diagonal staggered rela is clamped ?rmly down on the upper edges of tionship. 29. It also effectively binds the shank of the tooth in the channel 22 thus providing the de sired holder or clamping means for the tooth. The adapter block is denoted by the numeral 2| and is of general rectangular form. As shown to advantage in Figure 3 the bottom of the block is formed with a channel 22 in which the shank of the tooth ?ts sliolably so that the tooth can 10 be adjusted to position the hook or tooth element H toward or from the frame I2. It will be noticed in Figure 5 that one end, that is, the rear end of the block is indicated by the numeral 23, while the diagonally out or oblique forward end is differentiated by the numeral 24. A pair of transverse spaced parallel stabilizing cleats '25 are provided on the attaching side of the block, one of the cleats being close to the rear end 23 and the other one at the center of the block and 20 both cleats being parallel to each other and par allel to said edge 23. Cooperable with these cleats are pairs of lugs 25 extending at obtuse angles in relation to the transverse cleats '25. The effect of these two sets of lugs 26, which function as teeth, is that said lugs are substantially oblique to the longitudinal dimension of the block 2! as a unit. The numeral 21 designates supplementary cleats disposed parallel to each other and in parallelism with the correspondingly inclined or oblique edge 24. A group of three teeth or lugs 28 cooperate with these cleats 21. It follows that the teeth 26, that is, both sets, and the cleats 25 function simultaneously. These are used alternately with respect to the cleats 2'! and their associated prop erly angled teeth 28. The teeth or lugs 28 by the way are substantially straight with respect to the longitudinal dimension of the block 21 . The gist of the idea, however, is to be able to use the selected sets of teeth with respect to predeter mined keeper notches 59 and 20 in the bars l8 as shown in Figure 3 to get the desired prede termined angular position of the adapter block 2| with respect to said bars l8. For example, in Figure 3 at the right it will be noticed that the teeth or lugs 26 are then engaged with the keeper notches l9 and 20. This positions the edge 23 ?iush with the bars I8, disposes the cleats 25 in contact with the inner surfaces of the bars I8 as shown in Figure 4, and positions the block 2| as a unit, at right angles to the longitudinal dimen sion of the frame unit l2. It follows that when the adapter block is in this position the shank portions of the teeth ID are at right angles to said frame unit l2. Then by shifting the block 2| the teeth 28 may be engaged with the notches l9 and 20 at which time the oblique edge 24 matches the bar l8, positioning said adapter block 2| diagonally and throwing the teeth ID in the same diagonal position with respect to the 60 frame unit l2. Attention is now invited to the hanger ?xtures for adapter block 21. Each ?xture is the same in construction and is denoted by the numeral ' 29 as shown to advantage in Figure 6. This ?x 65 ture 29 is a frame the upper portion being ?tted to embrace the suspension clip 39. This clip 30 rests on the upper edges of the bars I9 and, there fore, suspends the hanger ?xture 29 between the bars so that said hanger ?xture is in a position to, 70 in turn, suspend the adapter block 2!. In fact, the adapter block is saddled in a stirrup-like manner in the lower hanging portion of this clamping hanger 29. Attention is also called to the set screw 3|~ engaging the suspension clip or 75 element ‘30. By tightening the screw the clip 39 the bars l8. At the same time it binds the se lected lugs 26 or 28 in the keeper notches l9- and It follows, therefore, that the holder comprises the adapter block 2| adjustably connectible by its teeth 26 and 28 to the keeper notches l9 and 29 through the instrumentality of the set screw 10 clamping means 29. By using the simple hanger clip or suspension element 30 and the set screw 3| and frame hanger 29, the feature 29 can be axially adjusted in conjunction with the toothed block or adapter 2| to satisfactorily obtain either 15 of the two set positions shown in full lines in Figure 3. It follows that with this adjustable tooth clamping or holder means it is possible to proper: ly arrange the teeth ID to function either as the 20 conventional ‘V-shaped harrow or angled with respect to the line of draft to serve as a so-called side harrow. ' Attentionis invited to Figure 2 wherein it ‘will be observed that the numeral 32 designates an 25 arm adjustably mounted by a so-called rosette clamp 33 on one end. of the frame 12. This arm carries a blade 34 which constitutesa dirt shield located between two of the spring teeth‘to facili tate the operation of the ‘teeth and to guard against easy breakage of these fragile spring teeth. It is thought that the description taken incon nection with the drawings will enable a clear understanding of the inventionto be had. There fore, a more lengthy description is thought un necessary. ' While the preferred embodiment of the inven tion has been shown and described, it is to be understood that minor changes coming within 40 the field of invention claimed may be resorted ‘to if desired. What is claimed is : 1. In a structure assemblage of the class de scribed, a frame unit including a pair of spaced 45 parallel bar members, a clip resting on the upper edges of said members, a hanger stirrup ‘embrac-l ing and hung from said clip and located between said bar members, a set screw adjusting, and clamping connection between the clip and hanger 50 stirrup, and adapter means in said hanger stir rup serving- to slidably receive the shank portion of a cooperating spring harrow tooth. ' ’ 2. In a structure of the class described, a rela tively stationaryframe unit of general rectangu 55 lar form including spaced parallel bar members, a stirrup-like hanger vand clamping member dis posed between said bar members, a clip resting on the upper edges of thebar members, said-hanger member being attached thereto through the in 60 strumentality of a set screw, an adapter block saddled in said hanger member, said vadapter block being grooved to slidably accommodate the shank portion of a cooperating spring harrow tooth, and co-acting elements between the lower edges of the bar members and adjacent surface of the adapter block ‘to permit said block to be arranged either at right angles or oblique ‘angles to properly position the harrow tooth as described. 3. In a structure of the class described, a frame unit including spaced parallel bar members hav ing keeper notches formed in their lower edge portions, an adapter block having selectively usable sets of teeth engageable with the keeper notches, said adapter blockhavlng its underside 2,110,984 grooved to slidably receive the shank portion of a complemental harrow tooth, a hanger element embracing the adapter block and located between the bar members of said frame unit, and means for clamping the hanger member ?rmly on said frame unit in the manner and for the purposes I 3 stantially oblique to said longitudinal dimension, and means for clamping the adapter block ?rmly in the notches, said means being cooperable with the bar members of the frame unit. 5. As a new article of manufacture, a com ponent part of an assemblage of the class de described. scribed, comprising a frame unit including spaced 4. In a structure of the class described, a rec-r parallel bar members having selectively usable tangular relatively stationary frame unit includ keeper notches, an adapter unit having selective 10 ing spaced parallel bar members having diagonal ly usable keeper lugs engageable with said keeper notches formed in their lower edges, an notches to allow the unit to be connected with adapter block, said adapter block being provided the frame in a position to dispose it at right with spaced sets of distinguishable lugs and said angles or obliquely to the longitudinal dimension sets of lugs being selectively engageable with said of said frame, said adapter unit being grooved to 15 keeper notches to permit the block to be dis accommodate the shank 'of a harrow tooth. posed either at right angles to the longitudinal dimension of the frame unit or in a position sub LEO U. BURKES.