US1893416A - Harrow tooth - Google Patents

Description

G. KAISER HARROW TOOTH Filed July 29, 1932 6207' 9 ,i/zei INVENTOR ATTORNEYS I Jan. 3, 193 3.

Patented Jan. 3, 1933 UNITED STATES FE E 1 GEORGE KAISER, orroLcnoF'r, asses -mam} minnow 'roo'rn Application filed July 29,1932." Seria1 No. 625,961.

This invention relates to an improved har- *Figuref3 is an enlarged detail view ofv the row tooth, and the manner in which it may tooth detached from thestandard. be mounted on and secured to a harrow tooth Figure 4 is a longitudinal sectional V w support or standard. on 'llne' r iof Figure'3.* l

The invention has for its purpose to provide Ref'erring to the drawing 1 identifies a 55 a tooth of this kind which is reversible so that St ndard or support, which is adapted to be either end of the tooth can be operated in the ried by any suitable harrow frame or strucsoil between-the rows of crop, for not only e (h and 5111 g of the Stand-v b ki up th il b t l f tti a'rd where the tooth is mounted is V shaped 10 and weeding the foreign growth. as ehewhet 'Q ehgitgihg this edgeis a 63 Since the harrow tooth is reversible, that teeth 3, Wh is likewise V Shaped r I is to say end for end, the tooth is therefore 1h 9 e eeetiehreehtermihg the V shaped renewable. For example when the cutting e g 'l if prevent turning or twisting edges of the tooth atone end thereof are O t f eh e y When: the Sthgte dulled, the tooth can be detached, and then hg e 2 t ghtned. This fastening e5 replaced with the other end in operative posi- {heehe ,eolhlhleeee hett the head?) of Whteh' ti ISJpBGI'i Qd OI' swaged down upon the outside Another purpose is to provide a tooth of e 's s ce 6 f. h {300th ng this kind which is V shaped in cross section, t seehlte. ehheh h h the The with its opposite ends provided with converg- Shank t ejh f m t y j ent the i tti edges7 i t hi h th fi' t Com head thereof s square orrectangular in cross verging flanges merge, acting to ride under Section as wn at 'Thls square or e the surface of the soil and thereby sever the g l fpe e ,p t Substantial disroots of any foreign growth between the rows tehce'threhghtheetehderd, for x p of crop. i

Another purpose is to provide an improved terlahy 1h RTeVehtlhg the belt from turning, single means for mounting the tooth upon a when p'p y e h 9 t0 the Y BI end 0f the 7 7 support or standard of the harrow, the tooth belt, thereby drew/111g the helttlghtly h p being V shaped substantially throughout its tloh and clelhplhg the V Shaped pertleh 0t length, and since it straddles the support or the tooth e h the shaped edge of the standard a twisting movement of the tooth Standard 1t m; Obvlous that the Square i t d rectangular portion of the shank likewise It is to be understood that the particulars Passes through the apex of the V shaped P herein given are in no way limitative, and that tloh of the e while still keeping within the scope of the in- The p e h of the teeth eljev pe 85 vention, any desired modification of details and h portlohs have cehvet'glhg ehttlhg and proportions may be made in the conedges V struction of the appliance according to cir- Also the pp end Portlehs of the teeth cumstances, are flared or upset as shown at 11, and such The invention comprises further features flereet p t P s merge lhto the C011- and combination of parts to be hereinafter g e; euttlhg etlgee Fhrthermere the set forth, shown in the drawing and claimed. flared upset p e at the pp ends I th d i of the tooth merge into or follow over the Figure 1 is a view of the harrow tooth as p of the V shaped Fertloh of the teeth, mounted upon a standard or Support of th as shown at 12 at the po nts wherethe sharpharrow. ened edges converge to the rounded apexes. Figure 2 is a sectional view on line 2-2 of These flared or upset portions travel under Figure 1 showing the V shaped construction the surface of the soil and the sharpened 50 of the tooth so that it is prevented from turnedges act to sever the roots of foreign growth ing. between the rows of crop. Also by an adj uststantially one half way through assisting may ment of the angle of the standard in any well known conventional manner with respect to the frame of the harrow the depth of the tooth into the soil can be regulated.

Obviously this construction of harrow tooth enables the tooth to be reversed and consequently renewing the tooth- Opposite sides of the tooth substantially mid Way the length have cut away portions 13, which permit the broken up soil to fall back upon the surface of the-soil as the tooth operates. V

The invention having been set forth, what is claimed is:

1. As an article of manufacture, a harrow tooth. comprisinga bodyV shapedin cross section to conform to and engage aVashaped edge of a. supporting standard,tw-ith means passing through the tooth and through the supporting standard to secure the tooth in place and thereby prevent its turning, the opposite end portions of the tooth having flared;

or upturned portions provided with cutting edges converging to'rounded apexes, thereby rendering the tooth reversible and consequently renewable. v

2. A reversible renewable harrow' tooth,

comprising a body V shaped in cross sectionto be mounted upon a supporting'standard,

said tooth atits oppositeends having flared or upset portions provided with cutting edgesconverging toward rounded apexes,,the op+ positesides of the tooth substantially mid. way the apeXes of the cutting edges being; provided with cut away portions to permit the broken up soil to pass and fallback upon the surface of. the soil.

In testimony whereof I aflix my signature.

GEORGEKAISER.

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