US2226884A - Fabricated cultivator sweep - Google Patents

Description

L. O. WIESE FABRICATED CULTIVAIOR SWEEP Dec. 31, 1940.-

Filed July 23, 1957 Patented Dec. 31, 1940 FABRICATED CUL'rivAT R swear Lee 0. Wiese, Perry, Iowa a v This invention relates to improvements in cultivator sweeps and particularly the type of cultivator sweep that is used for surface cultivation, employing an upright body member and laterally and rearwardly inclined cutting elements connected to the lower 'end of the body.

Heretofore this type of cultivator sweep has been formed from a single piece of sheet metal, the same being first blanked from the metal by suitable dies. On account of the peculiar shape of the device a considerable amount of waste of metal is encountered. Furthermore, difficulty is encountered in obtaining the most desirable shape by the stamping process, it being desirable to provide on the sweep a rib extending from the point of the shovel and terminating in the upright body portionv so as to form a dividingelement to assist in separating the material as it is i moved past the lower end of the body member in two directions.

I have found that by forming the sweepof a number of pieces of stock material and welding the adjoining edges of the pieces togetherto form a unitary sweep member, the cost of the construction of the sweep may be considerably reduced and at the same time provide a sweep having a better and more desirable shape.

It is, therefore, the object of my invention to construct a cultivator sweep of the type having a vertical body member and laterally and rearwardly extending cutter elements projecting from the lower end of the body member formed of sections of stock sheet metal, and welding the sections together to accomplish the desired results.

A further object of my invention is to provide in a cultivator sweep of the type above described, improved means for increasing the life of the point of the sweep.

My invention further consists in an improved method by means of which the sweep of the type above described may be easily and efliciently constructed.

My invention consists in the construction, ar-

rangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawing, in which:

Figure 1 is a perspective view of my improved cultivator sweep.

Figure 2 is a bottom elevation of the same. Figure 3 is a detail sectional view taken on the line 3-3 of Figure 1.

Figure l illustrates n at ,the'cutterportions asblanked from stock inateriaL;

, Figure 5 is a planview of the sweep. Figure 6Qis an end view'of Figure 5;'

Fi ure 7 is a detail sectionalview.tak

orgi e my} member My improved fsweep' comprises a body" portion l0 blanked from stockbarsjof steel or other suitable material having one end prbvidedfwith beveled: portions it to. form a pointed end; The member .Illjis then placed in, a die and, curved as indicatedin Figure 6, a rib. .13 being foi rnedlat the pointed end, as indicated in Figure QJfsaid ribbeing projected upwardly from thefffr'ont or right and left. The ,b'ody'portion i9. and thecutter portions [4 are then placed in a suitable, jig IT, with thebeveled portions Iii of the mem; bers l4 nearly adjoining, and ,the bevels 12 of the..memberjadjoining th upper edges-.of ..the innerends of themembe'rs M, the members l4 being inclinedrelative tothelhorizontal when the device is in its normal-working position. The

beveled edges l2 and IGare then welded together,

as illustrated in Figure 2, with a small amount of the hard welding material between the beveled edges I6 to form a hard seam zea, as illustrated in Figure 10, the sweep being placed in the jig preferably in an inserted position and with the jig supported beneath a forming die is, having a pointed end 19 supported above the seam uniting the beveled edges It. As'soon as the said edges l6 have been welded together, then the die I8 is lowered so as to press the welded ends I 6 into a groove 20 formed in the jig ll, so as to form a rib 2| connecting with the rib I 3 of the body ID, or in some cases, both the ribs 2| and 13 may be formed by a single operation, said forming operation taking place while the seam is hot from the welding process. The cavity in the pointed end 22 of the sweep is filled with a non-abrasive alloy 23 by an electric welding method. This provides means for reinforcing the pointed end and at the same time providing a very hard tough substance which will withstand a comparatively large amount of wear.

Holes 24 are formed in the body memberfby means of which the sweep may be attached to a cultivator shank by suitable bolts. The front and upper surface of the sweep is then finished and polished and the edge I5 is sharpened, the

of earth formed by moving the sweepthere through.

Figure 11 illustrates a modified form of my device in which the lower end of the body [0 is pointed in the manner above described. A V- shaped cutter element 28 is then provided, the beveled edges of the pointed end of the body (0 being placed .adjaeent to the adjoining inner and upper edges of the member 28,after which the said edges are welded together. A rib 29 is then formed in the apex end of the front surface of the member 28, all as clearly illustrated in Figure 11. v v

In Figure 12 I have illustrated'another modified form in which the lower end of the body I0 is provided with an enlarged portion 25 having shoulders 26 to receive the adjoining ends of the cutters 21. These are welded together in the manner before described. A separating rib 30 may then be formed in the enlarged portion 25.

Thus it will be seen I have provided a cultivator sweep which is simple, durable and of comparatively cheap cost, and. one which may be easily manufactured with a comparatively small amount of equipment, as it will readily be seen that sweeps of various dimensions may be easily constructed by simply increasingor decreasing the length of the cutter members [4 and a single jig used for the assemblingiof 'the device if the angle of the cutting edges is the same, one relative to the other. Difierent shaped sweeps may be easily provided by simply changing the angle of the beveled edges l2 and 16 and providing suitable jigs for the assembly, or an adjustable jig can easily be provided, in which case a single jig would be sufficient to permit the manufacturer to assemble sweeps of various shapes and sizes; Heretofore it has been necessary in providing sweeps of different sizesjto provide a complete set of blanking and forming dies for each different size or shape, so that the initial cost of manufacturing applicants sweep has been a greatly decreased from that necessary to manufacture sweeps of a single piece.

I claim as my invention:

1. The method of forming a fabricated cultivator sweep, comprising an upright body and a portion provided with laterally diverging and projecting cutter portions, which consists in stamping the body and cutter portions separately of sheet metal, then welding the parts together to form a unitary sweep structure, then pressing by suitable dies one of the Welded seams while hot from welding, to formon the upper and forward surface of the sweep an gipwardly and' rearwardly extending dividing 'rib.'

, 2. The method of forming a fabricated cultivator sweep, comprising an upright body and a portion provided with laterally diverging and projecting cutter portions, which consists in stampingthe body and cutter portions separately of sheetmetal, then supporting the stampof the sweep an upwardly and rearwardly extending dividing rib.

' 3. 'Ihemethod of forming a fabricated cultivator sweep, comprising an upright body and a portion provided with laterallydiverging and projecting cutter portions which consists in stamping the body and cutter portions separately of sheet metal, then supporting the stampings in a jig in the desired form, then welding the adjoining ends together with hard welding material in such quantitiesas to form a seam or rib on the under surface of and between the adjoining ends of the cutters, then pressing the seam thus formed, outwardly from said inner surface into a suitable groove in the supporting jig while hot from welding, to form behind and between the adjoining edges of said cutter portion a hardened and upwardly and rearwardly extended dividing rib. I

4. The method of forming a fabricated cultivator sweep, comprising an upright body portion provided with laterally diverging and projecting cutterportions which consists in stamping the body and cutter portions separately of sheet metal, the cutter portions being formed of sheet metal previously rolled to a taper to form a cutting edge, then supporting the body and cutter portions inproper relation to each other,

then welding the adjoining endstogether with a hard welding alloy to form a seam or rib on the under surface of and between the adjoining ends of the cutters, then pressing the seam thus formed, outwardly from said surface into a suitable groove in the supporting jig while hot from welding, to form behind and between the adjoining edges of the cutter portion an upwardly and rearwardly extended dividing rib.

- LEE 0. WIESE.

Images