US2373703A - Cultivating blade and carrier - Google Patents

Description

April 17, 1945. c. s. NOBLE CULTIVATING BLADE AND CARRIER Filed 001;. 9, 1943 v In VEN Toe Char/es .5 Noble Patented Apr. 17, 1 945 Charles sh med Noble,l-.Noblefbrd,,Alberta,

Ganad Application October 9', 1943 5- Serial No. 505,642

teams; (01. 97. 7)

This application is a -continuation-in'-part of application SerialNumber 360,686; filed'Oct-- 10,

1940. I p v I This invention relates to improvements in cultivating bladesand carriers, a principal object" of'the' same being to provide a processing implej ment 'for use on land where moisture is scarce, which will-eradicate weeds-with a minimum disturbance of the groundsurfa'ce and the stubble or' trash remaining thereon,lwhich stubble or trash serves a most useful purpose in holding snow and moisture against rapid evaporation.

A" further object of' my invention'is to' provide a device of the characterherewithin described,

by theuseof' which losses from drifting'soil may be reduced, thereby-increasingyields.

' A- further object of my invention is to provide a device or the character herewithin described which will accomplish the first, as well as all subsequent work, of preparing a fallow.

'A-further'object ofmy invention is toprovide a deviceof the character herewithin described which" is designed to penetrate any land which a plowcan penetrate; being also designed-to e1iminate the use of a plow or any other cultivating implement.

I A furtherobjectof my invention is-to provide .a de'viceoflthe characterherewithin described,

the-bladeofwhichis so shaped asto effect-a soil crushing action, and-toopen upa furrow'slica below ground leve'l at any desired depth andparallel with the" surface of the ground; the said slice being conducted 1 over the blade and carrier in-arr easypolishing fi'ow upwardly, with a mini mum of draft, but in such a wayas toefiect the maximumpossibleweed kill.

' A further object offmy invention is to provide a clevi'ce'"of the character herewithin described; both edges'of which are bevelled upon the same surface so that the blade may be reversedwhen' worn:

A iurther-objectof my invention is'to provide a deviceof the character herewithin' described in whichnopulverizing of the sur'faceofthe land takes place, but whichin spite of'this; willeradia with other implements; but'left erect tosgather snow, the furrow at the roots of the stubble being; however, 1 loosened to absorb better any ran, Wintenor early spring-moisture; I 7 I With the above more important objects in View and such other minor objects as may appear as the specification proceeds, my'invention consists essentially in'the arrangement and" construction: of parts-1 all as hereinaftermore particularly described, reference being had to the accompanying drawing; in-whichz' I Figure 111 is across-sectional elevation on the line l--|-' of Figure 2, of'my -bla'de iand carrier combination. f 1 I l Figure 2'is a plan vieW- of my bladeand carrier combination and'illustrating the-100i of the supporting standards.

In the drawing: like characters :ofl reference: indicate corresponding parts in the! different figures. I y 7 i By: reference to the accompanying. figuresyiti willlbe seen that my elongated transverse'carrier l is secured to the. lower" ends of spaced: hangers or standards-2 adjustab1y secured: at the upper; ends thereof as 1 clearly. described and illustrated in myUnited States'Patent No. 2,323,412 of: J 'uly 6; 1943; the actualc'details of" attachment: of'the', carrier I to the. sta-n'dardsu -ziv consisting: of. the semi circular brackets .orl Wings" 3: which project: outwardly from: the: standards, being. welded thereto; drilled and countersunkito. receive the sidered: asi bisected by the longitudinal vertical cateweeds-and sever theplants from'theroots thereofpafter which the latter willdecompose upon-the surface of the land'- farmore rapidly tharris the -case'when such weed" growth'is plowedunder: I I

'A further object of my'invention'is to' provide a device of the character herewithin described; the useof'which, when used for fall' cultivation, will" prevent" weeds from drawing further moise ture' and'produci'ng seed, the said weeds being decomposed to afford a certain mulching and fertilizing'value; v I

A furtherobject of myinvention'is-to-providea device of the character herewithindescribed; by theuse of which thestubblejis "not broken down plane 6-, to; the left of which isthe'leading, side 1; andionnthe right the trailingaside 8. a

The advanced portion 9 of the upper" surface 40: ofrth'er leading side isplanar or flat,v while. the entirelupper'surface of the carrier to. the rear of the planar portion thereofis arcuate. Overlying the: planar portion 9:.ofthe leadingrside l; is. a

cultivating blade H alsov of downwardly arched,

cross-sectional; configuration. 1 i The blade H is secured to the'carrier'bymeans of the: countersunkubelts 'H' which project through drillingszinrthecarrier; the; nuts I [beingsecured in the-t recesses [3: provided. therefor: in the underside ofv'the carrier, landiit will beinoted thatz Ir provide transverseln' aligned. pairs -?of courrtersunk apertures: HI for-thesaidbolts;so.-that the'bladermay'bereversed whenworn. s

The; upper or scouring r surface I5: 01" the: blade I I is also a'rcuate" but. is struckto a: radius of curvature considerably" greater than zthe-radiusvof curvature of theli-upperisurfacezof thecarrier, and

here I would explain that for practical purposes I consider a radius of 14 inches for the blade and '7 inches for the carrier to be the most suitable.

Such radii as set forth in the preceding paragraph provides the longest practicable curvature in the blade, and at the same time the greatest amount of curvature in the carrier consistent with keeping the assembly as shallow as possible as from the bed 15 of the furrow slice l1 so as to reduce the draft as far as possible and provide the maximum throw of the furrow slice as from the line l8 where it may approximately be said to leave .the blade and remain in temporary suspension before subsiding back onto the surface The under surface 18' of my blade is struck to an arc of similar curvature to the upper surface, and thus it willbe seen that when viewed in transverse cross-section, the adjacent surfaces 9 and I8 present a shallow segmental contour l9, which also provides a means whereby the blade can be secured very tightly to the carrier via thebolts and nuts l2, since a certain resiliency will exist as a result of the segmental space.

In conclusion, and of particular importance is the fact that my cultivating blade is secured in a step-lapped relationship to the carrier, in contrast to a flush-lapped relationship, whereby that part of the upper surface of the carrier which is to the rear of the blade, occupies a stratum of space definitely spaced from and underlying that occupied by the upper surface of the trailing portion of the blade. While in suitable soils, the furrow slice l1 leaves the blade at approximately the point indicated, it is to be understood that there are other and heavier types of soil which do not rise clear, and which tend to lay on the cultivating surfaces. Under such circumstances, if the upper surface of my carrier were flush with the upper surface of the blade, excessive and unnecessary friction would take place, materially increasin the draft required to draw the implement through the ground since it may roughly be said that even in the heaviest type of land, a certain amount of free fall can be attained, or in other words, a certain limited distance can be traveled before the under surface 20 of the furrow slice'will make contact with the upper surface of the carrier after leaving the trailing edge 2! of the blade.

Since various modifications can be made in my invention as hereinabove described and many apparently widely different embodiments of same made within the scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense and I desire only such limitations placed thereon as are specifically expressed in the accompanying claims.

What I claim as my invention is:

1. In an elongated cultivating blade and carrier combination wherein said carrier is secured directly to standards depending from a mobile superstructure, a blade having parallel leading and trailin sides on either side of a vertical plane to be considered as extending longitudinally and centrally therethrough, said blade being designed for overlapping attachment of the trailing side thereof to the upper surface of said carrier, at least the upper surface of said blade being convex when viewed in transverse cross-section, the upper surface of the overlapping side,

thereof occupying a stratum of space spaced from and overlying that occupied by the upper surface ofsaid carrier.

2. In an elongated cultivating blade and carrier combination wherein said carrier is secured directly to standards depending from a mobile superstructure, a blade having parallel leading and trailing edges, said blade and said carrier also having leading and trailing sides bisected by vertical planes to be considered as extending longitudinally through said blade and carrier respectively, said blade being designed for overlapping attachment to the upper surface of said carrier, the upper surface of the leading side of said carrier being planar and inclining forwardly and downwardly, the upper surface of the trailing side of said carrier being convex, at least the upper surface of said blade being also of convex cross-sectional configuration, the upper surface of that part of said blade which overlaps said carrier occupying a stratum of space overlying that occupied by the upper surface of said carrier.

3. The combination as defined in claim 2 in which the under surface of said blade is concave, said concave under surface overlapping the planar surface of said carrier and being adjacent thereto so that the said overlapping portion or the under surface of said blade and said planar surface present a shallow segmental contour when viewed in transverse cross-section.

4. In an elongated cultivating blade and carrier combination wherein said carrier is secured directly to standards depending from a mobile superstructure, a carrier of downwardly arched cross-sectional configuration, a blade also of downwardly arched cross-sectional con-figuration, said blade and said carrier each being considered as longitudinally and vertically bisected by planes extending through said blade and carrier respectively to define leading and trailing sides, said blade. being secured to the upper surface of the leading side of said carrier in overlapping attachment such that at least the upper trailing surface thereof occupies a stratum of space overlying that occupied by the upper surface of said carrier, the leading side of said blade projecting forwardly beyond the'leading edge of said carrier, the leading edge of said blade being below the leading edge of said carrier.

5. In an elongated cultivating blade and carrier combination wherein said carrier is secured directly to standards depending from a mobile superstructure, and wherein said blade and said carrier are each to be'considered as longitudinally and vertically bisected by planes extending through said blade and carrier respectively to define leading and trailing sides, the trailing side of said blade being secured to the upper surface of the leading side of said carrier in wholly overlapping attachment such that at least the upper trailing surface of said blade occupies a stratum of space overlying that occupied by the upper surface of the trailing side of said carrier, the upper surface of said blade being convex, at least the upper surface of the trailing side of said carrier being also convex.

6. The combination as defined in claim 5 in which the convex upper surface of said blade, and the convex upper surface of the trailing side of said carrier are both arcuate, the radius of curvature of the upper surface of said blade being greater than that of the upper surface of the trailing side of said carrier.

CHARLES SHERWOOD NOBLE.

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