US122251A - Improvement in revolving harrows - Google Patents

Description

J. HI-LL & J. (a. STEWART.

Improvement in Revolving Harrows.

N0 122,25]. 2 279-1. Patented Dec.

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UNITED STATES PATENT GFFICE.

JACOB HILL- AND JAMES G. STEWART, OF JONESVILLE, INDIANA.

IMPROVEMENT IN REVOLVING HARROWS.

Specification forming part of Letters Patent No. 122,251, dated December 26, 1871.

accompanying drawing and to the letters of reference marked thereon which form a part of this specification.

The nature of our inven tlon conslsts 1n the construction and arrangement of a revolving harrow, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which our invention appertains to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawing, in which Figure 1 is a plan view, and Fig. 2 a side View of my machine.

' AArepresent two parallel side beams, connected at or near their front ends by means of two crossbars, B B, and with these form the frame of our machine. In the side beams A A an axle, O, has its bearings, and on said axle are mounted the drivingwheels D D, one on each end of the axle inside of the frame. Upon one end of the axle 0, outside of the frame, is a large pulley, E, connected by a belt, a, with a small pulley, E, on the end of a shaft, G, placed in suitable journalboxcs across the front end of the frame. 0n the opposite end of this shaft is a large pulley, E connected by a belt, I), with a pulley, E on one of the journals of a roller, H, which is mounted in the rear end of the frame. This roller is provided with several series of spirally-arranged barrow-teeth, d d, and when the machine is in motion this roller obtains a very rapid rotating movement. The tongue I is secured in the center on the under side of the cross-bars B B. Between the tongue I and the front cross-bar B is inserted a stepped sliding-block, J, which is slotted longitudinally, so that the bolt which secures the tongue to said cross-bar will pass through the same. By adjusting this block at the dilierent steps, or, in other words, increasing or diminishing the distance between said cross-bar and the tongue, the frame .is thrown more or less over back ward, and hence the depth at which the harrow-teeth d d will work readily regulated.

This harrow is perfectly balanced, and, as the driving-wheels are inside of the frame, the ground packed by them will at once be loosened by the roller.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent,'is

The combination of the frame A B, roller H with spirally-arranged barrow-teeth d. d, tongue I, and slotted-stepped sliding-block J, all constructed and arranged substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing as our own we aftlx our signatures in presence of two witnesses.

J AGOB HILL. JAS. Gr. STEWART.

Witnesses T. F. ERRINGER,

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