US30280A - Improvement in harrows - Google Patents

Description

v0. WATSON..l

Rotary Harrow. Y No. 30,200. Patented 0G02, 1000.

www? 7% A N. PETERS, PHDTOALITHOSRAEHR. WASHINGTON, D. C.

' UNITED STATES PATENT OFFICE.

O. WATSON, OF OASOADE, VIRGINIA, ASSIGNOR TO HIMSELF AND A. H.

TIKNSLEY, OF SAME PLACE.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 30,280, dated October f2, 1860.

To all whom fit may concern:

Be it known that I, QWATSON, of Cascade, in the county of Pittsylvania andLState of Virginia, have invented a new and Improved Rotary Harrow 5 and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specication, in which- Figure l is va side view of my invention; Fig. 2, a plan or top View of my invention.

Similar letters of reference indicate corresponding parts in the two figures.

The rotary harrow, which is comparatively a recent invention, is acknowledged to be superior to the ordinary square and triangular ones,inasn1uch as theydo not have atendency to collect weeds and trash, but rather to cast them oft' as they rotate. They also cover seed in a more thorough manner and pulverize the earth better than the old styles of harrows. As a general thing, however, they have been rather complex in their arrangement, expensive to construct, and liable tov become deranged by use. The object of this invention is to obviate these difficulties.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

Arepresentsahub, which may be constructed of wood or metal and in any proper way; and B are spokes or arms, the inner ends ot' which are mortisedinto the hub A, and the outer ends have a strong metal rim, C, secured to them by clips or cuits l), which pass around the ends of the spokes and through the rim O and have nuts a on their ende.. These clips or cuffs, while serving to secure the rim O to the spokes or arms B, also serve to prevent the arms from splitting by the adjustment of the teeth D into them. The teeth D may be of quadrilateral taper form, gradually diminishing from the arms to their points, as shown clearly in Fig. 1, the upper ends of the teeth being tapered in a reverse direction and having screw-threads cut on them, on which nuts b are fitted, and by turning which in the proper direction theteeth are firmly adjusted in the arms B.

E is an axle, the lower end of which is provided with an arm, on which the hub A is titted and secured in any proper way, the upper part of the arm, at its junction with the axle E, being provided with a.col1ar or shoulder, c,

which bears or rests on the upper end of the hub. On the axle E a beam, F, is placed and secured by keys d. The axle E is of quadrilateral form, and the beam is rmly secured to it, the beam resting on the collar or shoulder c. The axle E extends some distance above the hub A, and a brace, Gr, is connected to the inner end of the beam F and to the upper end of the axle E, the inner end of the beam extending somedistance beyond the axle. This brace Gr retains the beam in proper position and renders the whole machine stift' and lrm. On the upper end ot' the axle E there is placed a collar, H, which rests on a shoulder, e, on the upper end ot' brace G, and is secured on the axle by a nut-,jl The collar H is allowed to turn freely on the axle, and to said collar there is attached a curved arm, g, which has a box,l, secured to its lower end.

The operation is as follows: The team is attached to the outer end of the beam F, and the box I is partially or wholly tted with stone or other substances to give it sufficient weight to cause the teeth ot the portion ot' the harrow immediately below it to penetrate the earth sufficiently to insure the rotation ot' the harrow as it is drawn along, the resistance which the loaded side of the barrow offers to the draft movement producing such result.

The harrow can be made to rotate. in either direction by shifting the position of theloaded box I, which is readily done in consequence of the collar H heilig allowed to turn freely on the axle E.

From the above description it will be seen that the harrow is composed of but few parts, but one toothed wheel being used and a single adjustable weight, which does not require to be very heavy in order to be efcacious on account of the leverage obtained in connecting it with the upper part of the axle E. This is an important feature, for it reduces the draft by dispensing with the superfluous weight.

I do not claim the employment or .use of a tary collar H, upright axle E, brace G, beam wheel provided with teeth and arranged to ro- F, hub A, and arms B, all as herein jshown tate by the draft; movement of the machine and described, for the purpose set forth. irrespective of the arrangement herein shown and described; but C' WATSON' I do claim as new and desire to secure by Witnesses:

Letters Patent- G. W. GRANT,

The arrangement ofA the box I, arm Z', ro- I. M. CABANISS.

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