US602538A - Harrow - Google Patents

Description

(No Model.)

G. E. GEDGE. HARROW.

, PatentedvApr. 19, 1898.

Nrrn STATES A'IEN'I Erica.

GEORGE E. GEDGE, OF SPRINGFIELD, OHIO.

HARROW.

SPECIFICATION forming part of Letters Patent No. 602,538, dated April 19, 1898.

Application filed August 27, 1897. Serial No. 6%,684. (No model.)

To ctZZ whom it ntctg concern.-

Be it known that I, GEORGE E. GEDGE, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Harrows, of which the following is a specification.

My invention relates to improvements in tubular-frame barrows; and it relates particularly to means for holding the harrowteeth so that the same may be adjusted in the frame.

The invention consist-s in the constructions and combinations of parts hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a plan view of a harrow embodying my invention. Fig. 2 is a detail view in perspective, illustrating the means for holding the barrow-teeth. Fig. 3 is a detail View in section, showing the adjustable tooth-holding device.

Like parts are represented by similar letters of reference in the several views.

In constructing my barrow-frame I use tubular bars a, connected together by any suitable cross-bars a in the usual manner. The harrow-teeth b are mounted in the tubular bars a, the bars being drilled or punched for this purpose to receive the teeth which extend through the bars. Forholding the teeth firmly in their positions, and also to provide means for adjusting the teeth, I employ a clamping device 0, which is provided at the top and bottom with openings 0' and 0 formed of the same shape as the harrow-tooth, which is preferably square. The openings 0 and 0 however, are preferably slightly larger than the cross-section of the harrow-tooth b, and the sides of the openings are arranged at an angle to the plane of the clip or clamping device. This clip or clamping device 0 is provided with a bolt 0 which passes through the upper and lower portions thereof and is adapted to draw said portions together. The upper and lower portions of the clamping device between the bolt 0 and the openings are formed on their inside to conform to the shape of the tubular bar a, so that as'the bolt is tightened to draw the upper and lower portions together they draw around the pipe. The result of this construction is that if the tooth b is extending through the openings of the clamping device and through the corre sponding opening in the tubular bar the tube will be clamped between one side of the opening in the bar and the opposite sides of the openings in the clamping device.

In Fig. 2 I have shown the upper and lower portions of the clamping device formed in one piece with a connecting-strip 0 In this construction the clamping device is formed of malleable metal, so that the bar 0 will yield to permit the clamping parts to assume the proper clamping position.

In Fig. 3 I have shown the upper and lower parts of the clamping device disconnected except as they are connected by the bolt 0 the part 0 being shown in dotted lines to indicate its position when it is employed. In either case, however, the result is the same, the clamping parts being adapted to fit one side of the tubular bar only, and as they are drawn together they have a tendency to move around the bar in opposite directions and thus clamp the barrow-tooth.

It is obvtous that by this construction the barrow-tooth may be clamped in any position of adjustment. The tooth may be of any shape in cross-section, either round, square, or polygonal, and of a uniform size through out the adjustable portion of its length. By this arrangement the openings through the tubular bars may be formed to conform to the shape of the teeth, or they may be simply round holes drilled or punched in the bar, as the shape of the clamping device will not only hold the tooth against longitudinal movement through the bar, but it will also prevent the rotation of the same in the bar.

Having thus described my invention, I claim 1. The combination with a continuous walled tubular bar, of a harrow-tooth extending through the same, of a clamping device having portions above and below said bar and fitting around said tooth, said portions being adapted to substantially conform to and fit one side of said bar, and means for drawing said portions of the clamping device against said tooth, substantially as described.

2. A harrow formed with tubular bars, harrow-teeth extending through said bars,clamping devices for said barrow-teeth consisting of upperand lower portions formed with openings therein through which said barrow-teeth are adapted to pass, the respective portions of said clamping device being adapted to substantially conform to one side of said bar, and means for drawing said upper and lower portions together on the side to which they conform to said bar, substantially as specified.

3. The combination with a tubular bar, a tooth projecting through the same, a clamping device having a portion above and aportion below said bar and connected at one side bya yielding connection and on the opposite side by an adjustable bolt, said portions having parts which extend around and are adapted to substantially conform to one side of said bar,said portions having openings corresponding to said tooth, said portions being adapted to be clamped against said tooth substantially as specified.

4. The combination with the continuous walled bar a, barrow-tooth b, said tooth being adapted to pass through openings in said bar, clamping device 0 having openings for said tooth, the adjustable bolt 0 and a connecting-piece 0 substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand this 23d day of August, A. D. 1897.

GEORGE E. GEDGE.

W'itnesses:

CHAs. I. WELoH, G. M. GRIDLEY.

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