US346521A - Harrow - Google Patents

Description

(No Modeh) 2 Shee ts-Sheet 1.

J. WBOKMAN.

HARROW. No. 346,521. Patented Aug. 3, 1886.

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2 Sheets-Sheet 2.

(No Model.)

J. WEGKMAN.

HARROW.

No. 346,521. Patented Aug. 3, 1886.

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OF CANTON, OHIO.

HARROW.

SPECIFIGATION forming part of Letters Patent N0.S 1-6,521;dated August 3, 1886.

Serial No. 191,436. (No model.)

To all whom it may concern:

Be it known that I, JOHN \VEOKMAN, of Canton, in the county of Stark and State of Ohio, have invented an Improved Harrow; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification.

My invention belongs to the class of revolv ing harrows, the revolving movement being effected by weighting one side more than the opposite side, and thereby causing the harrow-teeth in the weighted side to offer more resistance to the progress of the harrow than the other side.

My improvements will be specified in the following description of the invention.

Figure l of the accompanying drawings is a top View of my improved harrow; Fig. 2, a side View thereof; Fig. 3, a front view of the same; Fig. 4, a central vertical section of the harrow; Figs. 5, 6, 7, 8, and 9 detail views of the various parts,designated by corresponding letters of reference.

The main body of the harrow is made of two timbers or beams, A A, crossing each other at right angles, and halved together at their crossing, and of two circular rims, B O, bolted or otherwise secured to the upper sides of the cross-timbers, thereby tying and bracing them together. The two rims are concentric, the larger one being near the outer ends of the cross-timbers and the smaller one being much nearer-half way or thereabout to the center of the harrow. These crosstimbers are provided with harrow-teeth a a, arranged at regular distances apart along the length of the two. For some work I also employ intermediate timbers, D D, fitting at their inner ends into the angles of the crosstimbers, and secured to the circular bracerims by bolts or screws or other means. These, when used, are or may be provided with harrow-teeth a a, like the regular cross-timbers. These intermediate timbers are removable from and attachable to the harrow at will without disturbing the harrow proper, and thus constructed and adapted they form one feature of my invention. Another use of these attachable and removable timbers is to carry pulverizers, either with or without harrow-teeth. For this purpose pnlverizingshoes E E, preferably of the form shown in Fig. 5, are bolted to the under side of each auxiliary or attach able timber. They are bolted to the under sides of the timbers, as shown in Fig. (3, the bolts being passed through harrow-teeth holes, if desired, or through separate holes for the purpose. \Vhere the pnlvcrizing-shoes are applied, of course harrow-teeth are to be wanting. The pulverizing-teeth may be separated more or less from the lower sides of the timbers, as indicated in Fig. 6, so as to extend downward as low as desired, and the cut distances from the ends of the timbers, so as to completely sweep the ground as the harrow is drawn along through the whole breadth of land worked by the harrow at each time of passing alon As shown in Fig. 5, each pulverizer is made of an oblong piece, ordinarily of wood,chaml'ered on the. nndcrside,b, of the front edge, and protected from too rapid wear 011 the under surface by a sheet-metal cover ing, 0. The outer'end, d, of the shoe is best made pointed, as shown, so that when moving nearly endwise forward it may properly cleave through the earth. These shoes, as above set forth, form another feature of my invention.

Upon the central part of the crosstimbers A A is secured a socket, F, which turns upon the pivot II of the draft-bar G. This socket or pivot-block has fourllanges, ffff,projecting at right angles to one another, and secured, respectively, to the arms of the cross-timbers. The pivot His also secured by flanges y g to the under side of the draft-bar G, and the pivot itselffitsin the socket F, thus allowing draft-bar is drawn forward.

Of substantially the same diameter as the inner rimiG on the body of the harrow, and situated directly and concentrically over it,is another circular rim or rin'g,I, attached to the lower side of the draft-bar G. This upper rim serves to carry four (more or fewer) friction-rollers, J J J J, preferably equidistant from one another, so that the alternate ones shall be opposite to each other in the circle. The bearings h h h h of the rollers are secured to the under side of the rim I, and the rollers roll upon the rim 0 as upon a circular track. This construction allows a weight to be carshocs of different timbers may be at difl'era free turning movement of the harrow as the ried by the draft-bar and its rim for weighting one side or other of the harrow, to produce the revolution of the same, without much friction of the .parts, and with steadiness of revolving motion communicated to the harrow.

For weighting one side of the harrow, the weight of the driver of the team is utilized. For this purpose, as another feature of my invention, a cross-bar, K, is secured transversely to the draft-bar and also at its ends to the upper rim,I, suitable blocks, it, or their equivalents, being placed between the crossbar and the rim to fill the space between. A seat-board L is located over the cross-bar, and is supported by it,resting on suitable legs, j j,

or other supports attached to thecross-bar. On-

this seat-board (sufficientlyraised above the draft-bar) is placed the drivers seat M, being bolted directly thereto. The seat is made adjustable alongthe length of the seat-board, in order not only to locate the driver out upon the seat-board in the proper position to produce the requisite weight on one side of the harrow to properly revolve the same, but to shift his position from one side of the harrow to the other in order to make it revolvein the other direction when desired. There are various ways of providing for this adjustment; but I prefer the construction represented in the drawings, consisting of a long slot, 7c, in the seat-board L, extending lengthwise thereof, and held by a screw-bolt, Z, passing down through the seat and slot of the seat-board, and tightened bya hand-nut, 111, shown in Fig. 7. On simply turning the hand-nut back a little and loosening the screw-bolt, the seat is ready to be slid along on the seat-board to the required position, and the hand-nut is then turned forward to tighten the bolt. To keep the seat from turning out of position, one or more lugs or projections, n n, Fig. 8, may proect from the lower side of the seat into the slot of the seat-board, or the guides may project down by the front or rear edge of the seatboard. The driver thus is always facing the team when turning the harrow, as well as at other times.

I disclaim, in a revolving harrow, a solid center platform on the body and another platform on the draft-bar, with a friction-roller between the two platforms.

I claim as my i11vention- 1. The combination of the harrow-body having two circular rims, B G, secured to the radial timbers A, the inner rim, 0, serving for a circular track, the draft-bar G, pivoted to the center of the harrow-body, circular rim I,,secured L, supported by the said crossbar at aproper height above the same, anda seat, M, adjustable lengthwise upon the seat-board and transversely to the line of the harrows advancing movement, substantially as and for the purpose herein specified.

3. In combination with the harrow, removable timbers or beams D D, provided with pulverizers E E, and adapted to receive harrowteeth, substantially as and for the purpose herein specified.

JOHN \VECKMAN.

IVitnesses:

BENJAMIN F. FAUST, J. H. HAMAKER.

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