US981455A - Harrow. - Google Patents

Description

W; B. MITCHELL; HABROW.

APPLICATION EILED AUG. 12, 1910.

981,455. Patented Jan.'10,1911.

Attorneys ENTERED STATE% PATENT @FFTQE.

WICKLIFF B. MITCHELL, OF IBEDFORD, INDIANA.

HARBOW.

asresa.

To all whom it may concern:

Be it known that I, .VIoxLIrF B. Mirror:- ELL, a citizen of the United States, residing at Bedford, in the county of Lawrence and State of Indiana, have invented a new and useful Harrow, of which the following is a specification.

This invention has relation to a harrow structure and consists in the novel construction and arrangement of its parts as hereinafter shown and described.

The object of the invention is to provide a simple harrow structure comprising a series of spaced beams held in fixed relation to each other and provided with reversible blades which are held in vertical parallel planes by securing devices located at the forward edges of the said beams. The said securing devices are so mounted and constructed that they may be readily withdrawn so that the blades may be easily and quickly reversed in their positions upon the beams and thus as the blades wear at their forward ends they may be turned so that their rear unworn ends may be forwardly disposed or vice versa.

In the accompanying drawings ;Figure 1 is a top plan view of the harrow. Fig. 2 is a side elevation of the same. Fig. 3 is a detail sectional view of portions of the harrow showing one form of blade attached thereto. Fig. 4 is a detail sectional view of portions of the harrow showing another form of blade attached thereto. Fig. 5 is a detail sectional view of portions of the harrow showing still another form of blade attached thereto.

The harrow consists of beams l which are secured together by bars 2 and which are held by the said bars in spaced relation as indicated in Figs. 1 and 2 of the drawings. The beams 1 are of greater vertical thickness at their rear portions than at their forward portions and the said beams are provided at their forward edges with longitudinally disposed grooves 3. The beams 1 are provided at their rear edges with kerfs or incisions t and at their forward edge portions with kerfs or incisions 5. The kerfs or incisions 4: at the rear edges of the forward blade are in the same vertical plane as the kerfs or incisions 5 of the next adjacent beam 1 to the rear. The kerfs and incisions 4; and 5 of the adjacent beams 1 are adapted to receive the forward and rear end portions, respectively, of blades (3. The blades 6 are Specification of Letters Patent.

provided in their upper portions with perforations 7 and rods 8 pass through the per forations 7 of all of the blades 6 between two adjacent beams 1 and the said rods 8 lie in the grooves 3 provided at the forward edges of the said beams 1. The said rods 8 may be held against longitudinal movement by frictional contact with the said grooves 3 or other means may be provided for preventing the said rods from moving after they have been positioned in the said grooves and passed through the perforations 7 in the blades 6. Each rod 8 is provided at one end with an angularly disposed portion 9, whereby the said rod may be readily with drawn in a direction longitudinal or lengthwise when it is desired to remove the blades 6 from the kerfs for the purpose of reversing the same in the manner above indicated.

It will be seen from Figs. 3, 4E and 5 of the drawings that the blades 6 may be of any desired configuration and the blade 6 as illustrated in Fig. 3 is provided with a pointed upper edge portion, while the blade as shown in Fig. 4: is cut away at its upper corner. The blade as shown in Fig. 5 is in the form of an oblong and the kerfs or incisions at and 5 in the rear and forward edges of the beams 1 are correspondingly formed to receive the blades of the various configurations. hen one or more blades in a harrow structure has become worn at its forward or rear portion to such an extent as to become unserviceable, the rod 8 holding the said blade or blades may be withdrawn from the recess or recesses 3, and the said blade or blades may be reversed from their positions between the adjacent beams 1, thus some one portion of the blade will be exposed or subjected to the work, while those portions of the blade which have become worn will be so positioned as to escape the soil as the implement is drawn over the surface of the same.

Having described the invention what I claim as new and desire to secure by Letters Patent is A harrow comprising spaced beams, said beams having at their rear edges incisions and at their forward edges incisions, the incisions at the rear edges of the forward beams being in the same vertical plane as the incisions at the forward edges of the next beam to the rear and so on throughout the series of beams, said beams having at their forward edges longitudinally disposed Patented Jan. 10, 1911.

Application filed August 12, 1910. Serial No. 576,814. 7 l,

grooves, blades inserted at their forward and In testimony that I claim the foregoing rear end portlons 111 the 1ne1s1ons at the rear as my own, I have hereto afiixed 1ny s1gna and forward edges of ad acent beams, and ture 1n the presence of two witnesses.

rods passing transversely through the blades \VICKLIFF B. MITCHELL. located between the same beams and lying lVitnesses: at their intermediate portions in the grooves C. E. FRANKLIN,

at the forward edges of the said beams. VVALTER Gr. OWENS.

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