US1108261A - Harrow. - Google Patents

Description

E. W. SMITH.

Patened Ang. 251 i914.

vision EDGAR W. SMITH, OF CARBON, ALBERTA, CANABA, ASSIGNOR OF ONE-HALF '.L'OA i ALEXNDER J. MCLEOD, GF CARBGN, CANADA,

HARROV.

modem.

Specification of Letters Patent.

Patented Aug. 25, 1914. l

Application filed January 19, 1914. Serial No. 813,009.

To all 'whom t may concern Be it known that I, EDGAR W.' SMiTH, a citizen or" the Dominion of Canada, residing at Carbon7 in the Province of Alberta and Dominion of Canada., have invented certain new and useful Improvements in Harrows, of which the following is a specilication, reference being had to the accompanying drawings.

This invention relates to new andV useful improvements in harrows and more particularly to that type known as roller harrows wherein a plurality of rollers are provided having teeth adapted to engage the soil to thoroughly pulverize the same as the harrow is drawn thereover.

Another object of my invention' is the proof a barrow of this diameter wherein the rollers are so arranged that when the frame ot the narrow is drawn in a straight line, the rollers Will diagonally engage the soil and thoroughly pulverize the saine, this forni of harrovv engaging more of the earth than the Well known harrows wherein the rollers are arranged in a longitudinal position.

ftnother objeet of the invention is the provision of harrow oi this eliaraeter which will poss advantages in points of ellioiency and durability, is inexpensive of manufacture and at the lsaine time is simple in Construction and operation lViti'rthe above andA ot..er ol *ts in view, this invention consists in the novel features of construction and the combination and arrangement of parts to be hereinafter more fully described, pointed out in the claim shown in the accompanying drawings2 in Which- Figure 1 is a top plan View of a harroW constructed in acoordanee with my invention; Fig. 2 is a rear elevation; Fig. 3 is a front elevation.

Referring more particularly to the drawings, 1 and 2 indicate tivo substantially rectangular frames which are arranged in di- 'vergeht relation and Connected at their outer ends by having the inner corners thereof flattened and riveted together, as shown at 3,

the outer corners of the frames being suit.

ably connected by means of a transverse bar 4. These rectangular frames l and 2 are preferably Constructed of metal, the outer side portion thereof having its inner end extending transversely across the rear portion .of the barrow and in parallel relation with' of the main frame of the harrow, the ends'k forming the outer side portions of each of Y the frames being connected together' at the rear end of the harrow by means of a U- shaped member 5, the ends of said member being rigidly secured to the ends of the bars. A colter or guide wheel is mounted Within the U shaped member 5 and is adapted to hold the harrow from anyside draft.

Arranged between the inner sidesof the frames 1 and 2 and connected thereto and to the transverse end portions 7 is a cross piece 8 in which is formed a bearing 9 adapted to receive the spindle 10 of the roller 1l, the other end of said roller beine mounted Within a second U-shaped member 12, the ends of which are secured to the inner side portions of the Ytrames 1 and It will be noted from the accompanying drawings that the rollers 11 are arranged upon opposite sides of the Center of the harroW and are disposed at an angle in divergent relation with respect to the center.

Arranged Within the frames 1 and 2 are the rollers 13 which are arranged in sets in each of the frames, having their ends rotatably mounted within the end portions of the frame. AThese rollers 13 are disposedI at divergent angles with respect to the Center the rollers l1. The rollers 11 and i3 are provided with outwardly projecting teeth 14 which are arranged in alternate staggered relation upon the peripheries of the rollers and are adapted to engage the soil to loosen the same as the frame is dragged thereover.

Secured to the forward ends of the frames 1 and and arranged upon the louter sides thereof are the loops 15 to which isY secured the doubletree 16. From the above it will be readily apparent that l have provided a simple and durable harrow which is enn tremely simple in construction, the .trame portion thereof being preferably constructed 100 ot metal While the rollers may, if desired, be formed of Wood or any other suitable material. It will be noted that by the peculiar arrangement of the rollers that the soil will be more thoroughly pulverized, than by the 105 well known form of harrow-in use at the present time. lft will also be apparent that my device es oely 1e in construetion and. can be tively 10W oost.

While I have shown and described the preferred form of my invention7 it will be obvious that various changes in' the details of construction and .in the proportions may be resorted to for successfully carryin my invention into practice without sacri cing any of the novel features or departing from the scope of the appended claim.

A device of the class described including divergent frames having their inner'corners rigidly connected7 the rear portions of said frames having portions extending part-way across the rear of the barrow, a U-shaped member connecting the extended portions at the central portion of the harrow, a second the second U-shaped member and the angular pieces, and a second set 0f rollers rotatably mounted within each of said frames, and teeth carried by said rollers, as and for the purpose set forth.

In testimony whereof I hereunto affix mysignaturein the presence of two witnesses. EDGAR W. SMITH.

Witnesses:

ARTHUR H. MACNEIL, J. V. GRIMES.

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