US1430311A - Harrow - Google Patents

Description

E. I. MANN.

mumow.` APPLICATION FILED SEPT- 20. |921.

Patented Sept. 26, 1922.

INVENTQR L MMI/v,

BY t

ATTORNEY Patented Sept. Z6, 1922.

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EDWARD J. MANN, 0F ROCK TOWNSHIP, 'WOODBURY COUNTY, IOWA..

HARROW.

Application filed September 20, 1921. Serial No. 502,057.

To all whom it may conce/rn.'

Be it known that l, EDWARD J. MANN, a citizen of the United States, and a resident of Rock Township, lWoodbury County, lowa, have invented certain new and useful improvements in Harrows, of which the fol-v lowing is a specification. j I

My invention aims to provide an improved draw-bar for harrows embodying certain novel features of construction and arrangement of parts whereby it may be folded upon itself to permit its passage through gates and travel upon comparatively narrow roadways.

Furthermore the invention contemplates a folding draw-bar for harrows which is comn paratively simple and inexpensive 'in coni struction yet thoroughly dependable in operation and absolutely rigid horizontally when extended.

Still another object of the invention is the production of a folding draw-bar for har rows embodying certain novel characteristics and features, of construction which while rigid with respect to horizontal movement, is fieXible vertically to permit the end sections thereof to accommodate themselves to inequalities of the earths surface.

With these and other objects in view the invention, consisting in the construction, combination .and novel arrangement of parts, will be clearly understood from the following description, reference being` had to the accompanying drawings which form a part of this application and in which like characters of reference indicate corresponding parts throughout the several Views, of which:

Fig. 1 is a fragmentary plan of a harrow gang and the preferred embodiment of my invention applied thereto.

Fig. 2 is a front elevation of the same with the draft rigging omitted,

Fig. 3 is an enlarged perspective view of one of the end sect-ions of the draw-bar and parts associated therewith, and

.F ig. 4 is a transverse section thereof taken on the line 4 of Fig. 3.

Vhile I have illustrated and hereinafter described but one embodiment of the invention, l would not be understood as being limited to such specific construction, for various alterations and modifications may be made in the details of construction and arrangement of parts herein disclosed without departing from the spirit and scope of the invention as defined in the appended claims.

Referring, now, to the illustrations, 4 represents, conventionally, the usual drag or harrow, in front of which is positioned my improved draw-bar including preferably an elongated intermediate section, 5, and' 'relatively shorter end sections, 6. The front and rear sides of both sections 5 and`6 are preferably clad with metal strips, 7. The harrows, 4, are suitably'coupled to the drawbar, as at 8, vand it will be observed the intermediate harrows are coupled to the section, 5, of the bar, whilethe endharrows are connected respectively with the end sections, 6, of the draw-bar. The metal strips, 7, on the ends of the sections, 6, are spread, vas at 9, to receive the adjacent end portions of the intermediate section, 5, and the extreme end portions of the strips, 9, are provided with upwardly extending ears, 10, which register with similar ears, 11, on the strips, 7, of the intermediate section. Through the said ears, 10 and 11, are inserted bolts, 12,'the intermediate portions of the said bolts, 12, having rotatably secured thereto flat loose metal strips, 13, which rest on the end portions of the bars, overlap the adjacent end sections, 6, and freely project below staples or other suitable stops, 14, on the end sections. The said strips, 13, are preferably of spring steel.

The draft rigging preferably includes flexible elements, as chains, 15, having their outer ends detachably secured respectively to hook bolts, 16, adjacent the free ends of the bar section, 6; and their adjacent ends similarly secured to hoolr bolts, 17, adjacent the ends of the intermediate section, 5. To the bights of the chain, 15, may be secured in any suitable way the usual Whippletree, 18, to which the draft animals are hitched.

lt will now be clear that when the device is traveling over uneven ground the end sections are lifted separately to accoinmodate themselves to the irregular surface. 'In traveling from place to place to facilitate passage of the draw-bar and drags through narrow passageways the end sections are readily folded over the intermediate section, as lshown in dotted lines in Fig. 2, thus permitting the outermost of the drags, 4, to be inverted upon and carried by their companions. The remote ends of the chains, 15, are then detached from the securing members, 16, and attached to the hooks, 17, whereby the dra-ft is then all placed upon the intermediate section, as is clearly presented in dotted lines in Fig. 1.

it will also be observed that after the end sections of the draw-bar pass over depressions they are prevented from declining by virtue of the spring strips, 18, resting on the bar, 5, and being engaged in the members, 14.

The projecting end portions, 9, ot the strips, 7, of the end sections of the bar are preferably provided a distance from their ends with openings, 19. Through the openings, 19, and the holes, 20, in the end portions ot section 5 may be inserted bolts if it is desired to prevent vertical flexing ot the draw-bar.

Having thus described my invention. what l claim as new and desire to secure by Letters Patent of the United States, is:

1. A harrow draw-bar embodying an .intermediate section, end sections, transverse pivot members on the end portions of the 'former section, on which the end sections swing vertically, and supporting strips pivoted. coaxially with said members and secured to the end sections to prei ent their declining below a determinate plane.

2. A harrow draw-bar embodying an intermediate section, end sections, extended parts on the end sections between which parts the end portions oit the intermediate section are respectively pivoted to permit vertical swinging ot the end sections, and supporting strips swinging coaxially with the pivots, and secured to the end sections to prevent their declining below a determinate plane.

3. A harrow draw-bar embodying an intermediate section, and end sections, the sides of said sections being clad with iron strips, the said strips of the end sections being extended to overlap the sides of the end portions of the intermediate section., and formed with upwardly extended ears, and the irons of the intermediate section being formed with ears aligned with said ,first ears, and pivot bolts extended through said ears.

a. A harrow draw-bar embodying an intermediate section, and end sections, fthe sides of said sections being clad with iron strips, the said strips of the end sections being extended to overlap the sides ot the end portions ot the intermediate section, and formed with upwardly extended ears, and the irons of the intermediate section being formed with ears aligned with said first ears, pivot bolts extended. through said ears, and strips pivoted on said bolts and secured to the end sections and coacting with the upper sides of the intermediate section to prevent declining of the end sections below a determinate plane, with respect to the plane of the intermediate sec tion.

5. A harrow draw-bar embodying an intermediate section, and end sections, the sides of said sections being clad with iron strips, the said strips of the end sections being extended to overlap the sides oi' the end portions ot the intermediate section, and formed with upwardly extended ears, and the irons oi the intermediate section being formed with ears aligned with said first ears, and pivot bolts extended through said ears, the extended irons ot the end sections and the intermediate section being provided with registering openings to receive bolts to hold the end sections rigidly7 to the intermediate section.

in testimony whereof, l have hereunto set my hand this 16th day ot September,

EDVARD J. MANN.

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