US244808A - Harrow - Google Patents

Description

(ModeL) I B. JONES.

' u BY W ATTORNEYS?" UNITED STATES PATENT OFFICE.

BENJAMIN JONES, OF ORANGE, ILLINOIS.

HARROW.

SPECIFICATION forming part of, Letters IPatent No. 244,808, dated July 26, 1881. Application filed May 27, 1881. (Model) I Illinois, have invented certain useful Improvements in Harrows, of which the followingis a specification.

Figure 1 is 'a plan view of my improvement. Fig. 2 is a sectional side elevation of the same, taken through the line ac m, Fig. 1.

Similar letters of reference indicate-corresponding parts. I

The object of this invention is to promote convenience and efficiency in harrowing by making the harrows self-cleaning.

The invention consistsin constructing a harrow of a series of long stationarybeams, a series of short stationary beams'interposed between the rear parts of the long beams, the connecting cross-bars, the crank-rods pivoted to the stationary beams, the movable beams pivoted to the cranks of the crank-rods, and the teeth, whereby the movable beams will be raised from and lowered to the ground to push trash off the barrow-teeth, and thus keep the harrow clean, as will be hereinafter fully described. l

A are the long beams of the barrow-frame, which are placed parallel with each other and are connected attheir front and rear ends by cross-bars B. More or less beams A can be used, according as the harrow is to be wider or narrower.

To the rear cross-bar, B, midway between the beamsA, are attached the rear ends of the short beams O, which are a little less than half the length of the long beams A.

In bearings in the forward parts of the long beams A works a rod, 1), upon which, in the space between the beams A, are formed cranks E. The cranks E project at difl'erent angles, giving to the series of cranks a spiral arrangement. In hearings in the rear partsof the long beams A, and in the middle parts of the short beams G, works a rod, F, upon which, in

the spaces between the long beams A, are formed pairs of cranks Gr upon the opposite sides of the short beam 0. The cranks of each pair upon the opposite sides of the short beam 0 are parallel with each other, and the pairs of the cranks project at different angles, giving to the series of pairs a spiral arrangement.

To each crank E are pivoted the forward ends of two beams, H, which incline from each other to the rearward, and their rear ends are pivoted to the cranks G upon the opposite sides of the short beams C.

To [the beams A G H are attached harrowteeth I. With this arrangement, as the barrow is drawn forward, the teeth of the movable beams H. come in contact with the ground successively in frontof the teeth of the stationarybeams A O, and remain in contact with the ground until the teeth of the said stationary beams have passed them. This movement turns the crank-rods D F and brings the teeth of the next pair of movable beams in contact with the ground, and so on. These movements push the weeds and other trash off the teeth of the stationaryibeams, which trash, as the movable beams rise, is left upon the ground, so that the barrow-teeth will be kept clear of trash.

This construction can also be applied to cultivators and the covering-barrows of grain- Idrills with equal'advantage.

B, of the crank-rods D F and the movable beams'H, substantially as herein shown and described, whereby the barrow-teeth will be kept clear of trash, as set forth.

3. In a harrow, the combination, with the long beams A and the movable beams H, of the crank-rod F, having its cranks Gr arranged in pairs, substantially as herein shown and described, whereby the short beams G can be used between the rear parts .of the long beams and the barrow-teeth brought closer together, as set forth. w

BENJAMIN JONES.

Witnesses:

H. GASAWAY, J OHN GAMBLE.

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