US450060A - Harrow - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

A. G. DEWEY. HARROW.

No. 450,060. 0 Patented Apr. 7, 1891.

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UNITED STATES PATENT OFFICE.

ANDREXV G. DElVEY, OF CARLYLE, ILLINOIS.

HARROW.

SPECIFICATION forming part of Letters Patent No. 450,060, dated April 7, 1 891.

Application filed November 5, 1890. Serial No. 370,408. (No model.)

To all w/wm it may concern:

Be it known that I, ANDREW G. DEWEY, of Carlyle, Illinois, have made a new and useful Improvement in Harrows, of which the following is.a full, clear, and exact description.

A leading feature of the improved construction is the provision whereby the harrow is made reversible and also capable of being converted into a drag, and, further, whereby the construction is convertible, when desired, into a roller, all substantially as is hereinafter set forth and claimed, aided by the annexed drawings, making part of this specification, in which- Figure 1 is aside elevation of the improved construction arranged as a harrow; Fig. 2, a plan of the same; Fig. 3, a front elevation of the same; Fig. 4, a vertical longitudinalsection of the construction arranged as a drag, and Fig. 5 a view analogous to that of Fig. 4, but showing a roller substituted for the harrow.

In the last two-named views only those portions of the construction are exhibited which are needed for an understanding of the special features set forth in these figures, respectively.

The same letters of reference denote the same parts.

A, Figs. 1, 2, 3, and i, represents the harrow. While its frame a may be variously formed, it is in practice a plank substantially of the proportions shown and provided with teeth a, which project above and beneath the frame and thereby adapt the harrow to be used either side up.

The frame is provided with journals a c to adapt the harrow to be journaled in the arms Z) b of the frame-work B of the machine.

The movement of the harrow in reversing it is indicated by the circular broken line so, Fi 1.

The frame a is also provided with the lips a a They are arranged diagonally from each other upon the frame, substantially as shown. Their functions will be presently described.

The principal elements of the frame-work B are the described arms I) b, the cross-piece b, to which the said arms at the upper end thereof are attached, the tongue b and the central arm o which depends from the cross- I requisition in the various adaptations of the implement. It is journaled at its end cl to the frame-work B and from its point of connection with the frame-work it extends backward to the rear of the harrow, substantially as shown. It is notched at d to enable the lever to coact with the harrowin holding that part in its proper place when in use. To this end the parts are relatively contrived for the rearward lip a of the harrow-frame to enter the lever-notch when the harrow is in position for use and the lever is let down, substantially as shown in Figs. 1 and 2. With the parts thus connected the lever operates to lock the harrow and prevent it from rotating in its bearings.

hen it is desired to reverse the harrow, the free end of the lever is'raised to enable the lever to clear theharrow-frame lip. The harrow when free, is inclined as it is drawn along, to rotate in the arms 1) b; but it is desirable to be able to initiate its rotation if for any cause the harrow does not of itself rotate. Accordingly the lever is provided with a hook d which is pivoted in the lever at d and at its upper end d is jointed to a rod d which extends toward the free end of the lever D and is jointed to a bell-crank lever 01, which in turn is pivoted at d to the lever D. By closing the lever d toward thelever D the point of the hook d is moved into position to catch on the rearward lip a when the free end of the lever D is upturned. This position is indicated by the broken lines in Fig. 1. By continuing to lift the lever D the rearward edge of the harrow-frame is raised sufficiently for the purpose in question and the desired rotation of the harrow is effected.

A spring (not shown) may be used to restore the hook to its original position when the bell-crank d is released.

Owing to the described relative arrange ment of the lips a (t the lever D is operative whieheveredge of the harrow-frame is turned to the rear.

When it is desired to use it as a drag, the harrow is turned into its position of Fig. 4. In this position of theharrow one of the edges of the harrow-frame is toward the ground E, and the harrowis held from turning by means of a stop F. The stop is pivoted at f to the lever D and permits of the forward rotation of the harrow when that part is used as a harrow; but when the harrow is being used as a drag the free end of the stop falls behind the upper lip a and thereby braces the drag from rotating backward. The stop is prevented from swinging backward upon its pivotfby reason of the shoulder f upon the lever B B.

The lever D can also be used in the following manner: The harrow can be removed from its bearing in the arms I) b, and rollers, such as shown at G, Fig. 5, be inserted in the place of the harrow. Two rollers G G have to be used on account of the width of the frame-work B. To support the journals g at the inner ends, respectively, of the rollers G G, the lever D is provided with an arm g, which at its lower end is provided with an elongated bearing 9 The arm g is vertically adjustable in the lever D, and when the rollers G are used the arm g is lowered in the lever D from its position of Fig. 1 into its position of Fig. 5 and there fastened by means of a suitable set-screw 9 In this position of the arm and the lever D the bearing g is at the level of the harrow-bearings in the arms I) Z), and by inserting the inner journals 9 in the bearing g the rollers G G can be properly sustained. A brace 9 may extend from the arm 19 to the arm g to support that part when used.

The stay-chains H H are useful in turning the implement around.

I claim- 1. The combination of the reversible harrow provided with the lips, the frame-work, and the pivoted lever D, provided with the adjustable hook, substantially as described.

2. The combination of the reversible harrow provided with the lips, the frame-work, and the pivoted notched lever provided with the adjustable hook, substantially as described.

8. The combination of the reversible harrow provided with the described lips, the frame-work, and the lever D, provided with the stop F, substantially as described.

4. The combination of the reversible harrow provided with the lips, the frame-Work, the pivoted notched lever, and the stop F, substantially as described.

5. The combination of the reversible harroW provided with the lips, the frame-Work, the pivoted notched lever provided with the adjustable hook, and the stop, substantially as described.

6. The combination of the frame-work having the cross-piece b and the arms b b with the reversible harrow, said harrow consisting of the frame a and the teeth a, and being journaled in said arms, substantially as described.

7. The combination of the framework consisting of the arms Z) Z), the cross-piece b, the tongue 12 and the central arm b, with the harrow A, substantially as described.

\Vitness my hand this 23d day of October, 1890.

ANDREW e. DEWEY.

Witnesses:

JOHN J. McGAFFIeAN, J. O. W. SoHNELL.

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