US2304376A

US2304376A - Lister plow

Info

Publication number: US2304376A
Application number: US378270A
Authority: US
Inventors: Walter E Ramsey
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-02-10
Filing date: 1941-02-10
Publication date: 1942-12-08
Anticipated expiration: 1959-12-08

Description

` Dec. 8,1942.

vw. E. RAMsEYf V. 2,304,376

LISTER PLOW Filed Feb. 1Q;` 1941 ArvonnsYs Patented Dec. 8, 1942 UNITED! STATES PATENT OFFICE 2,304,376 Lls'rnn PLOW Walter E. Ramsey', Graham, Tex. Application February 10, 1941, Serial N0. 378,270

1 Claim.

My invention relates broadly to new and useful improvements in plows and more particularly to improvements in lister plows.

An important object of my invention is the provision of a lister plow construction that employs rotatable disks in place of the usual moldboard, which construction greatly facilitates the pulling of the plow through the ground and permits the same to operate satisfactorily when the ground conditions are such as to render the moldboard type of lister plow unsatisfactory in operation if not entirely inoperative.

Another object of my invention is the provision of a lister plow construction of the above-mentioned character which includes frontand rear pairs of disks arranged in forwardly inclined relation with each other and uniquely associated to widen the furrow made` by the breaker point, the inclined angle of the pairs of disks being unique to permit an essentially wide shallow furrow to be formed without substantially obstruct- 4ing or impeding-the drawingof the plowvthrough the ground.

Other objects and avantages of my invention,.

will `be apparent during the course of the following description.

In thedrawing, forming a part of this specification, and wherein like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of a lister plow embodying my invention, i

Figure 2 is a top plan view thereof, Figure 3 is a fragmentary bottom plan view of the same,

Figure 4 is an end elevation of the plow, Figure 5 is a rear elevation of the breaker point comprising a part of the invention,

' Figure 6 is a front elevation of the same, and Figure 7 is a transverse sectional View taken on the line 'I-l of Figure 1.

In the accompanying drawing, wherein for the Y purpose of illustration, is shown a preferred embodiment of my invention, the numeral I0 designates a beam having a bracket II at its forward end, said bracket being formed with a segmental flange I2 having a pluralityof spaced openings I3 for receiving a coupling pin adapted to attach the beam to a tractor, or the like. A bearing I4 is mounted intermediate the ends of the beam for receiving the axle of the supporting wheels (not shown) and the rearward end of the beam curves downwardly and forwardly to form the foot piece I5. A standard I6 in the form of a U-shaped metallic strip extends rearwardly of the beam,

the ends of the strip being disposedin embracing relation with the beam and lxedly secured theretoby means of the rivets Il, or the like. The end of the foot piece I5 is formed with an elongated slot I8 through which extends the bolt I9 for connecting thebreaker point ZIJ therewith.

In order that the advantages to be derived from my plow construction be realized to the full extent, it is necessary that the breaker point be essentially long and substantially thin. The point preferably comprises a metallic member 2l) having beveled ends 20 and forwardly inclined side walls 2|. This construction provides a sharp essentially heavy spine at each end of the breaker point and: the concave rear side 22 thereof snugly receives the convex confronting side 23 of the foot piece to securely locate the point. The head of the bolt I9 is seated withina recess 24 inthe breaker point and the portion thereof extending beyond the foot piece is provided with a Washer 25 and bolt 26 for holding the parts in lxed relation with each other. The elongated slot I8 in the foot piece permits the lower end of the pointto be vertically adjusted to dig a requisite distance into the ground and the manner in which the `point tapers at its opposite ends permits the same to bereversely mounted on the foot piece. ThisA iskan important factor forthe reason that if one end of the point is broken, or Votherwise damaged, it may be easily rotated through to dispose the opposite end thereof in operative association with the ground. It will be readily apparent that, as the lower end of the point passes through the ground, the rearwardly divergent side Walls 2| thereof will form the furrowv and throw the soil removed therefrom in parallel ridges lat the opposite sides thereof. `.,Frontand rear pairs of disks 2l and 28 are slammed fmmth Standard I6 by the U-shaped brackets 29 and 3U. Each pair of disks is essentially small to facilitate-the pulling of the same through the ground. I have arranged the individual disks 21 of the mentioned front pair in forwardly and downwardly inclined relation with each other. It is necessary that the space between the portions of these disks arranged in closest proximity to each other be lesser than the Vwidth of the breaker point. It is also necessary that the disks be disposed at a relatively slight angle in order to reduce the resistance created by-pulling the same through the ground to a minimum. I have found that the depending arms of the front supporting bracket 29 may best be arranged exteriorly of the disks. This construction is best illustrated in Figures 2 and 3 and the extremities of the arms are provided with bearings 3l which rotatably receive stub shafts extending from the disks.

The individual disks 28 of the rear pair are also disposed in forwardly and downwardly inclined relation with each other and the rearward portions of the front disks are arranged in overllapping relation with the Afront portions thereof. The disks 23 are disposed at a slightly greater angle than the front disks 2l whereby the portions thereof extending rearwardlyof the front disks also extend angularly laterally therefrom to widen the furrow formed by the breaker point and front disks. the rearward portions of the disks 28 engage the side walls of the furrow the resistance offered By reason of the fact that only thereby to being drawn through the ground; will be v relatively slight. The manner in which the rear disks 28 are disposed in relatively great angular relation with each other permits the depending arms of the rear supporting bracket 3l) to be received within the disks. As hereinabove-de scribed with reference to the front pair of disks, the extremities of the supporting bracket 3i] are formed with bearings 32 for receiving the stub shafts of the disks.

A bracket 33 is mounted on the standard lili adjacent the bracket 29 and a bracket 3Q is mounted on the standard adjacent the bracket 30.

"I-'hese last-mentioned brackets 33 and 3@ are of essentially U-shaped formation and the depending arms thereof extend downwardly adjacent the outer surfaces ofthe respective pairs of disks. Scrapers 35 andv 36 are mounted on the extremities of the last-mentioned brackets, which brackets hold the same in pressed engagement with the outer surfaces of the disks in a manner toV remove adhering soil andtrash. I prefer that the

brackets

33 and 34 be formed in two parts and that the portions thereof overlying the standard be disposed in overlapping relation, which overlapping portions being providedwith elongated'slots which permit lateral adjustment of the arms to regulate the degree of frictional engagement between the scrapers and the'disks.

In operation, the breaker point is first drawn through the ground and, by reason of'its essentially thin construction, it is easily pulled through the soil to initially form the furrow. The front pair of disks 2T follow immediately in the track ofthe breaker and inasmuch as the breaker is seated to extend into the ground-a depth equal to the depth of thenishedfurrow the front disks merely enter thefurrowV and spread the side walls outwardly to widen the same. The relatively slight angular relation between the front disks will permit this operation to be easily accomplishedrand the manner in which the disks are inclined forwardly andV downwardly will throw the soil removed from the furrow upwardly and to one side thereof. As hereinbefore described the disks 28 follow immediately in the path of the front disks and, inasmuch as they are set for the same depth, they will widen the furrow yet further and the forwardly and downwardly inclined relation thereof will similarly throw the dirt outwardly and upwardly. The fact that the disks are rotatably mounted will facilitate the drawing of the same through the ground and the fact that two pai-rs of disks are provided will permit a relatively wide but shallow furrow to be formed. Obviously, if a single pair of disks were provided, which disks were disposed at a relatively great angle to provide a wide furrow, it would be necessary that the disks extend a relatively great distance into the ground thereby materially increasing the resistance created in pulling the same through the ground. My arrangement provides a relatively large furrow and forms relatively small ridges of soil at each side thereof. The unique manner in which the disks are associated with each other and with the breaker point will provide a furrow having a fairlyv level bottom. The disks permit plowing of landl that is too dry to plow with a moldboard plow in that the rotatable mounting of the disks permits the same to easily pass through land which offers too great resistance to a moldboard.

It is to 'be understood that the form of my invention, herewithr shown and described, is to be taken as a preferred example of the same, and that various changes in the size, shape and arrangement of parts may be resorted to Without departing from the spirit of my invention, or scope of the appended claim.

Having thus described my invention, I claim:

A- lister plow comprising asupporting beam having a depending foot piece and an extension,Y

a breaker point mounted onv said foot piece, front and rear pairs of diskst said front disks being forwardly inclinedY whereby portions thereof in closest proximity will be of lesser width than the width of the breaker point and the rear pair of disks beingforwardly inclined and positioned partly between the forward disks, a bracket connecting each pair of disks withl said extension,

rst andv second inverted and sectional U-shaped brackets mounted on said extension, scrapers at the ends of the legs of the rst bracket engaging said front disks, scrapers at the ends -'of the-legs of the second'bracket engaging the rear disks, and a means adjustably connecting the sections of each bracket one with the other to adjust the respective scrapers with respect to their respective front and'rear disks.

WALTER E. RAMSEY.