US425148A - Harrow - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. J. B. SHORES. HARROW N0. 425,148. Patented. Apr. 8, 1890.

2 Sheets-Shet 2.

(No Modem J. .B. SHORES. v HARROW. No. 425,148. Patented Apr. 8, 1890.

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UNITED STATES PATENT OFFICE.

JOHN BYRON SHORES, OF OASSVILLE, TENNESSEE.

HARROW.

SPECIFICATION forming part of Letters Patent No. 425,148, dated April 8, 1890.

Application filed December 28, 1889. Serial No. 335,215. (No model.)

To all whom it may concern:

Be it known that I, JOHN BYRON SHORES, a citizen of the United States, residing at Oassville, in the county of \Vhite and State of Tennessee, have invented a new and useful Harrow, of which the following is a specification.

This invention relates to that class of harrows in which the teeth are fitted in revolving beams or cross-bars; and it hasfor its object to construct a harrow of this class which shall possess superior advantages in point of simplicity, durability, and general efficiency.

With these ends in view the invention consists in the improved construction, arrangement, and combination of parts, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 is a plan View of a harrow embodying my improvements. Fig. 2is a longitudinal vertical sectional view of the same. Fig. 3 is a perspective detail view of one of the joints or couplings between the harrow-bars. Fig. l is a detail view showing a modified construction of the harrow-teeth.

Like numerals of reference indicate like parts in all the figures.

Myimproved harrow is composed of a series of parallel transverse bars or rollers, which may be round or polygonalincross-section, and which may be constructed of Wood or metal, or of wood with metallic cores or gudgeons. When constructed of wood, the said rollers are bound at the ends with metallic ferrules.

The bars or rollers, which are designated by 1 1, are each provided with a series of radially-extending teeth or spikes 2, which may be either pointed for use in mellow land, or they may be providedwith sharp edges of suitable width, as shown at 3 in Fig. 4 of the drawings. The ends of the rollers are provided with gudgeofns 4, which are journaled in the links, which are designated by 5 5. Said links are provided at their front and rear ends with vertical perforations G to receive the coupling-bolts 7, and said vertical perforations are intersected by horizontal slots 8 to receive the ends of the coupling-links 9, by means of which the links or straps in which the two ends of the rollers are journaled may be flexibly connected. Each of the straps 5 is provided near its rear end with an outwardly-extending shoulder or offset 10 to provide for the gradually-increasing length of the rollers, the front one of which is the shortest, each succeeding roller being in practice made some five inches longer thanthe one in front of'it.

The straps 5, in which the front roller is journaled, are provided with forwardly-extending and upwardly-curved arms 11, the front ends of which have inwardl extending arms 12, to which the draft-bar 13 is connected by means of bolts 14, two of which are provided at their front ends with hooks 15 for the attachment of the draft. The straps 111 which the two rear rollers are journaled are made integralwith each other, and the teeth of the said two rear rollers intermesh with each other, as will be clearly seen by reference to Fig. 1 of the drawings. The device is thus constructed for the reason that the front rollers or toothed bars serve to break up all the hard clods, while the rear rollers, having their teeth arranged closely together, as shown, are intended to pulverize the soil more finely than could be done if the teeth were not arranged thus closely together. The rear ends of the rear straps 5 are connected by means of asuitableconnecting-rod 16. The teeth or spikes are screw-threaded at their inner ends to engage correspondiugly-threaded openings or recesses in the rollers, in which they are in this manner secured.

The operation and advantages of this invention will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed.

The construction of my improved harrow is exceedingly simple and inexpensive, and the toothed bars or rollers, being flexibly connected in the manner herein described, will readily adapt themselves to any inequalities in the surface of the ground. As the harrow passes over the land the teeth or spikes will enter the soil and penetrate to some depth therein, and the rollers will thus be caused to revolve, causing the teeth or spikes to thoroughly stir, agitate, and pulverize the soil.

The harrow may be readily taken apart for repairs or for the insertion of additional toothed rollers, and, owing to the flexible connections, the device may be folded into a comparatively small space for transportation or storage.

Having thus described my invention, what I claim is- 1. A harrow composed of a series of toothed bars or rollers, each of a somewhatgreater length than the one next in front of: it, the ends of said rollers being journaled in flexibly-connected straps provided near their rear ends with ontwardly-extending shoulders or offsets to provide for the gradually-increased length of the rollers, substantially as and for the purpose set forth.

2. In a harrow, the herein-described straps having the shoulders or oitsets and provided at their front and rear ends with the vertically-perforated ears and intersectinghorizontal recesses, in combination with the connecting bolts and links and the rollers journaled in said straps and having" radially-ex- \Vitnesses:

'J. J. BRADFORD, I W. SPERRY.

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