US2674173A - Reversible plowshare structure - Google Patents

Description

April 6, 1954 Filed June 7, 1949 W. l. WHEELER REVERSIBLE PLOWSHARE STRUCTURE I'Ie 1 2 Sheets-Shea?, l

IN VEN TOR.

April 6, 1954 w. l. WHEELER REVERSIBLE PLOWSHARE STRUCTURE 2 Sheets-Sheet 2 Filed June 7, 1949 -WlliamIWheeIer ATTORNEY Patented Apr. 6, 1954 UNITED STA-res 'Thisinventi'on relates generally to theclassof pl'ows-l and is directed particularly'to improvements-in plowshares.

A-principal object of the-present invention isto provide'in an earth working plow, an im'-V provedshare Ystructure which is designed forV reversal Aso 'that' two `blade edges'r'may beprovided 'upon theone share for the Yreversal and employmentA of a second blade when Athe -rst used bladeV has'becomedulled.

Another'object of the-- invention-'is to provide an `improved Y'pl'owshare construction having aremovable vdoubleiedgefblade, wherein" the' body of' the share andthe blade portion areijoinedtogather so as to provide a relatively smooth surface leading onto 'the surfacemof Ythewnoldboard, to' which the share is attached.

Another `object of 'the invention is to -provide in aplow construction a master sharejelement which is detachably connected toithe moldboard in the customary manner whereby'reinovalv of the share as a whole may beeffected if-and when desired,` witha blade forming a 'part ofthe master share element vand* detachably connected therewith. y Still another `object ofthe inventionisto providea constructionr of the above described'char'- acterywhereinithe; said blade has'each ofiits two long Ysides beveled to provide cutting edges; the master share jelementihavng 'a' correspondinglyv beveled.l surface for matching 4the bevel' of either side of theblade Whereby'to facilitate the connection. oitheblade onto the'master element^to vide a double edged double `pointed. reversible..

bladefor a plowshare .wherein a novelmeanslis employed for locking the. blade to the landside ofthe share, .whereby a .strongandfrigidconstruction; is obtained.

The.: invention will be best understood fromfa consideration of the following detailed descriptibn taken. in connection: with the 'accompanying drawingsfformingrapart of the specification, with the understanding, however, that the invention is` not to be-'limited tothe exact-detailsof-cernV struction shown vand described sinceobvicus :.2 modicationslwilloccur' tolaperson skilled1 in. the art.

In the drawings:

Figure lista view of; themoldboardside oflan earth Working plow showing inrassociationtherewith a llandside andE reversible blades constructed:

inaccordance with an= embodiment-of the present@ invention. o

AFigure 2-is a `viewfin perspective of the blade structurelfromthe rear.

Figure y 3 is-va -rear perspective1 view-Lofamodi-- tied" form of the doubleedgeblade ystructure wherein Vthe I cutting`- edge of" the lblade-at both ci'desextends straight to the fplow point.

Figure-4 2 is-a detailfvview in perspective vof fthe rear side of 'one-cfI theV blades ShowingV -an fin-terlocking connection betweenthe point and the orw-ardend ofthellandside'of-the plow.

' Figure isfa sectionalfviewtaken substantially on the line S-#S-OfFigure y-1.

Figure 6 is afview n-e1evationfof-the mold-- board- Sid'e-fof-4 a plow A showing the double -edgeblade forming 'the complete share as distin guishedv from the constructionY shown in-Figure v"1 where theblade forms apart on-1y'-offtheshare;`

AFigure l1" isaviewin rear elevationl gof Aone end;

of' a share 'showing' anl interlocking 'connection betweenv` the-point and the Iadjacent l part of the' landside. Y

Figure l2" is a view 'of the landside ofajplbw showingthemanner in which thelandside is em-j ployed to supportvthe point ofA a Vdouble edge blade or 4share of the character illustratedf in Figures''and'. Y.

'Referring now more-particularly to thedrawingsv Figure 1 illustrates Aa mojded share confl struction"wherein a double edge blade.- r(2011, structed'rni accordance with ;thewpresentinvenf the numeral" @generally designates'the usual or aevgiva conventional moldboard which has a straight or square cut bottom edge at II against which is fixed a correspondingly formed edge of a conventional share.

In accordance with one manner of carrying out the present invention such conventional share may be modified to have secured thereto the double edge share blade which is generally designated I2.

The modified conventional share is designated I3 and this has formed integral therewith at the landside of the plow, the landside bar I4 which, l for the application of one style of blade, is cut at an oblique angle as indicated at I5.

The double edge share construction or the blade I2 therefor, comprises a longbody of steel Y which is designated I6, the length of which is considerably greater than the length of the bottom edge I2 or of the modified share or master element I3. This blade bar I6 has the oppositely directedobliquely extending integral points I'I at the two ends thereof, the landside faces I3 of which are approximately parallel.

Each longitudinal edge of the blade bar I6 is beveled as indicated at I9 to provide a cutting edge 20. Each of these cutting edges extends forwardly along the shearing or cutting side of the point as indicated at 2l. i

Each of thepoints has a thickened landside portion 22 which extendsrearwardly from the point through approximately half the length of the landside face I8 as shown in Figure 2 and such thickened portion terminates in the rearwardly directed abutment shoulder 23 against which the edge I5 of the landside bar bears.

As shown in Figure 5 the retained portion of the modified standard share structure I3 has the bottom edge thereof beveled as indicated at 24 to correspond with vthe bevel I9 at either side of the blade bar I6. When the blade bar is placed in position with one beveled edge I9 against the beveled edge 24 and the shoulder 23 against the angled end l5 of the landside bar, the forward face of the moldboard will present a smooth surface across which the turned soil moves in the use yof the plow. Conventional securing means may be employed for coupling the blade bar I6 to the retained portion of the conventional share structure, as indicated at 26 and thecustomary means is employed for securing the share portion I3 to the bottom edge of the conventional moldboard, such means not being illustrated in the gures under consideration. Y

It will be readily seen upon referenceto Figure 1 that when the double edge share or share blade isin position one point I I will extend forwardly in the customary or conventional manner and the other point will be disposed a substantial distance rearwardly of the moldboard and will be extending upwardly from the edge of the blade which is in service. Since the points are of lduplicate form it will be seen that when the point in service and the edge corresponding thereto becomes damaged, dulled or otherwise uniit for use the bladecan be removed and reversed so as to bring a new pointand cutting edge into service. y

'In Figure l3 is'illust'rated a double edge share blade constructed in accordance with the present invention which corresponds in Width and in theformation of theV ends to a conventional removable blade. nated 2'! and has the two ends cut obliquely to form'the landside faces 28. Each longitudinal This blade is .generally desig.

`is generally designated 34. such blade visshown to illustrate a manner in edge of this blade is beveled as at 23 to provide a. cutting edge 30 and such edges, as shown, extend directly or in a straight line to the point 3| of the blade whereas in the form shown in Figures 1 and 2 such edge curves forwardly to follow the adjacent side of the elongated or forwardly extending point II.

The points 3| are thickened toward the rear through approximately half the length of the face 28, as indicated at "32 whereby there is formed a rearwardly facing'shoulder 33 against which the angled forward face of the landside bar bears.

In Figure 4 there is illustrated a blade which One end only of which an interlocking connection may be es- -'t'ablished between the point 35 of the blade and the forward end of the landside bar which is designated 36. In this construction the thickcned part 3l of the point has its rear side in the form of a V-notch '38 and the forward end of the'landside bar is corrrespondingly pointed as indicated at 39 to t in such notch. This arrangement tends to prevent deformation of the point under strains to which the point may be subjected as the same is put into use.

In the form of the invention thus far described the share structure has been illustrated and described as comprising amaster Velement which consists of a portion of the conventional share, and a double edgeddouble pointed blade. Figure 6, however, illustrates the double edge, double pointed blade as constituting the complete share.

In the illustration of the above referred lto form of the invention the moldboard is generally designated 4i) and the bottom edge thereof is ground to a bevel as indicated at 4I in Figure 9 to correspond to the bevel 42 upon either of the longitudinal edges of the share which is generally designated 43. The share as illustrated constitutes a single plate or bar of steel in which the two longitudinal edges are beveled as shown to `form the'cutting edges 44 and each end is extended obliquely to provide the ground penetrating point 45.

In the double edge, double point structure illustrated in Figures 6, 7 and 9 the bar is of the same thickness throughout from point to point and is, accordingly, placed upon thelower edge of the moldboard and secured by suitable conventional securing elements here shown as straps 46 althoughit is to be understood rthat the invention is not restricted to this'method of securing the share since it will be readily obvious that bolts, lugs, clips or other securing elements may be employed.

While in Figures 6 and 8 the lower edge of the moldboard has been shown as beveled to conform t'o the bevel 42 of the share it will be readily apparent upon reference to Figure 9 that the share may be applied directly to the square cut edge of the moldboard of conventional form or construction such as that shown in Figure l.l In such a case the lower edge 41 of the moldboard 48 would have one corner positioned against the beveled edge or beveled surface 42 of the share and the securing strap 49 would extend across the small gap between the adjacent edges of the Vtwo parts 48 and 43 as illustrated. This would,

of course, form a slight overlap of the upper edge of the share and the front face of the moldboard and would not, ofcourse, beas .desirable an arrangement as that shown in Figures@ and/or 8.

although such an arrangement might be effected if necessary without detracting from the advantages of the invention.

Figure illustrates a master element construction which is generally designated 50 in which the forward end of the landside bar 5l has a forwardly directed tapered point 52 which is formed oppositely to the point 39 of the construction illustrated in Figure 4.

The blade used with this master element is designated 53 and the thickened forward end part 54 of the point 55 has formed in the back part thereof the horizontal notch 56 which is tapered or pointed to receive the tapered point or tapered edge 52 of the landside bar.

The means employed for securing the blade 53 to the body of the master element 50 may be of any suitable character such as is commonly employed for securing a share to a landside and with this interlocking connection between the landside bar and the thickened point portion 54 of the blade it will be seen that a. rigid or solid coupling between the parts is eiected which will effectively resist bending strains which may be applied to the point in the various uses of the plow.

As is clearly shown in Figures 1 and 10 the landside is in part formed integral with the master element where the narrow double edge blade is employed. In the use of the full size blade or share as shown in Figures 6 and 7 the master element is not, of course, employed. In this event it becomes necessary and desirable to use a long landside as indicated at 51 in Figure 12. Such a landside would have `a long forward end portion or point 58 which extends forwardly under the point 45 of the share 43 as illustrated thus providing the support for the point 45 which is provided by the landside element 5l of the master element for the point of the narrow blade 53.

From the foregoing it will be readily apparent that there is provided in the present invention an improved plow share construction in which the blade is designed in a. novel manner whereby there may be obtained from the blade unit twice as much service as is obtainable from share blades constructed in accordance with the present practice since each share or blade has two usable points and two cutting edges, one of wh-ich may be put into use after the other has served its purpose.

I claim:

In a plow share structure, a moldboard having a straight unbroken bottom edge extending the full length thereof, a bar depending from the forward end of the said bottom edge in continuation with the leading edge of the moldboard, a ilat elongate share body having a straight intermediate portion of a length as great as the length of said moldboard edge and its longitudinal edges parallel and beveled to form cutting edges, oppositely and outwardly ,directed obliquely extending points formed at the ends of the share body, each of said points having a straight landside face which aligns with the landside face of the moldboard when the same is mounted in working position, each of said points being laterally and upwardly thickened a distance approximately one 'half of the width of the adjacent face of the share body to provide a shoulder at the upper end of the thickened portion against which the lower end of said bar abuts when the share body is in place, and means for securing the share body to the plow moldboard with a cutting edge in opposing relation to the said moldboard bottom edge, said share body when so secured having the rearwardly directed point thereof extending beyond the rear edge of the moldboard.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 23,898 Bryan May 10, 1859 94,667 Tessier Sept. 7, 1869 243,576 Kessler June 28, 1881 344,656 Hatcher June 29, 1886 420,350 Miller et al. Jan. 28, 1890 1,230,963 Westbrook June 26, 1917 1,680,830 Wheeler Aug. 14, 1928 1,762,251 Vegors June 10, 1930

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