US916917A - Whiffletree. - Google Patents

Description

G. F. DANIELSON.

WHIFPLETBEE. I

APPLICATION FILED SEPT. 1,1906.

Patented Mar. 30, 1909.

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GUSTAVE F. DANIELSON, OF YOUNGSTOWN, OHIO.

WHIFFLE TREE Specification of Letters Patent.

Patented March 30, 1909.

Application filed. September 1, 1906. Serial No. 332,891.

To all whom it may concern:

Be it known that I, GUSTAVE F. DANIEL- SON, a citizen of the United States of America, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in l/Wiiilletrees, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in whilfletrees formed of sheet metal and the objects of the invention are to so form up the metal as to give the maximum of strength with the minimum of material and to facilitate the manufacture.

A further object is to provide a very cheap construction of hook especially adapted to cooperate with the particular form of crossbar to prevent the accidental disengagement of the hooks from the trace of a harness and to provide a very strong and rigid link or clevis which cooperates with the doubletree to pivotally hold the swingletree in the plane of said doubletree.

It is also an object of the invention to provide a sheet metal double clevis for attaching the swingletrees or doubletrees to a cultivator, plow or other device, and to provide certain other new and useful features in the construction all as hereinafter more fully described, reference being had to the accompanying drawings, in which Figure 1, is a lan view of a doubletree and attached swing etree embodying the invention Fig. 2, is an enlarged section of the same on the line :r:r of Fig. 1 Fig. 3, afurt her enlarged section, on the line 3. Fig. i, is a perspective view of one end of the swingletree showing the hook; Fig. 5, a plan view of the same showing the different positions of the .hook in dotted lines; and Fig. 6, is a perspec tive view of the double clevis.

Like letters refer to like parts in all of the figures.

The cross bar 1 of the doubletree and the cross barZ of the swingletree are both formed alike of sheet metal bent U-shape in crosssection with its free forward marginal portions each rolled and reverted with its edges abutting to the flat body of the bar outwardly to form stiffening and strengthening open tubes or ribs 3 along said edges. The sheet metal is so shaped and formed that the bar is widest intermediate its ends and tapers toward each end, the front or rolled edge being straight and the rear rounding edge 4 being curved or arched to form a truss, and the ends of the bar are rounded or curved slightly so that they present no sharp projecting angles. The bar is strengthened and its flat sides held at a fixed distance apart by rivets 5 extending through said sides and upon each of which is a series of washers 6 filling the space between said sides, said rivets being headed down upon the outer surface of the sides.

7 are flat pressed steel hooks for the engagement of the traces of a harness which are each pivoted between the flat upper and lower side of the singletree bar near the ends thereof upon a bolt or rivet extending through said sides, and each is formed with a long point or bill 8 which, when the hook is turned forwardly to operative position, will project some distance into the longitudinal slot 9 or open side of the bar between its rolled edges 3 and. thus close the hook and prevent the possibility of the trace becoming disengaged therefrom. Said hooks are each so shaped and pivoted that its bill will not be swung far enough from the end of the bar to permit the escape of the trace until said hook is turned to its extreme rearward position into contact with the closed edge of the bar, and as the tendency of the trace is to turn the hook forward, the accidental unhooking of the trace is effectually prevented. The swingletree is pivotally attached to the doubletree by a link or clevis 10 formed. of a piece of sheet metal folded upon itself and the ends spread apart to embrace the swingletree and formed with perforations to receive a bolt 11 extending through said perforations and throughholesinsaidswingletree. Thefolded end of the link is inserted in the open forward side or slot 9 of the doubletree near the end thereof and provided with holes to receive a bolt or rivet 12 extending through said doubletree. The swingletree is thus rigidly supported in the plane of the doubletree but is free to turn in said plane. This con struction is especially desirable when the whifiletrees are used upon certain kinds of farming implements where it is not desirable to have a flexible connection permitting the swingletrees to fall below the doubletree.

When the whiffletrees are to be attached to the vertically extending clevis on the end of a plow beam or other implement, a commonU- shaped clevis is ordinarily used on the doubletree and a link to connect this clevis and the vertical clevis on the beam, but this gives a 'tangular connecting wall 16 with the horiconnection, reducing the amount of play and open tubes adapted to act as strengthening long loose connection which is often not d sirable. For such a connection a double clevis or link 13 formed of sheet steel is provided, consisting of two horizontally extending parallel ears 14 to embrace the swingletree or doubletree and oppositely extending vertical ears '15 to receive the plow clevis, each pair of ears being formed with perforations to receive bolts, and each being integral with a rectangular center portion of the blank from which said clev-is is formed, said center portion forming in the clevis a vertical reczontal ears integral with its upper and lower edges and the vertical ears integral with its side edges. A. very light and cheap double elevis is thus secured which makes a short which may be used to attach either the swingletree or doubletree to a farm implement.

Having thus fully described the invention, what I claim is: I

1'. A whiiiietree bar formed. of sheet metal bent throughout its length between its margins into U-shape, its margins being rolled outwardly with the edges abutting the ilat part of the bar into substantially circular el ribs at the open edge of the bar, said bar being formed with its Widest part intermediate its ends and tapering toward each end.

2. A whitlietree bar formed of a sheet metal blank bent throughout its length between its longitudinal edges into a U, each iiat arm having its rectilinear margin rolled upward and reverted in a substantially cylindrical tube with its edge abutting the arm, said bar being wider at its center and tapered therefrom to each end with its tubular mar gins straight.

3. A whifiletree bar formed of a sheet metal blank bent throughout its length between its longitudinaledges into U, said bar being widest at its center and tapered therefrom to each end, a stii'lening tube for each arm formed by the outwardly and upwardly rolled margin with its edge abutting the body of the arm, and stay members consisting of superposed spacing washers interposed between the arms at regular intervals and secured by rivets passing through the arms.

in testimony whereof I afliX my signature in presence of two witnesses.

GUSTAVE F. DANIELSON.

Witnesses CHARLES E. SHUMWAY, ANNA M. Donn.

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