US359969A - Edward w - Google Patents

Description

(N0 Model.)

E. W. HEBENDEEN.

, SWINGTOOTH HARROW. No. 359,969. Patented Mar. 22, 1887.

a a: a

wires rarns Arena @rrrcn.

EDWARD \V. HERENDEEN, OF GENEVA, NEW YORK.

SWING-TOOTH HARROW.

SPECIFICATION forming part of Letters Patent No. 859,969, dated March 22, 1887.

Application filed October 8, 1886.

To aZZ whom it may concern.-

Be it known that I, EDWARD \V. HEREN- DEEN, of Geneva, in the county of Ontario and State of New York, have invented certain Iniprovements in Swing-Tooth Harrows, of which the following is a specification.

The present invention relates to what are commonly known in the art as reversible or swing-tooth harrows, in which the teeth are connected to the frame in such manner that when the harrow is drawn in one direction they will assume a vertical or substantially a vertical position, and that when the harrow is drawn in the opposite direction they will assume an inclination toward the rear.

7 The aims of my invention are principally to reduce the cost of eonstructiomto give stronger support to the teeth in their different positions, and to prevent the splitting of the beams or frame-bars to which the teeth are attached.

To this end the invention consists, essentially, in slotted or notched plates of improved construction ,secured to the under side of the beams or frame-bars, their form and position being such that they engage the tooth and limit its swinging motion, and that they also serve to prevent the disconnection of the tooth from the beam.

Referring to the accompanying drawings, Figurel represents aportion of aharrow-beam having my improved devices applied thereto. Fig. 12 is a vertical crosssection of the same on the line a; m. Fig. 3 is a perspective view of my improved stop-plate. Fig. is a top plan view of the parts represented in Figs. 1 and 2. Fig. 5 is a top plan view of the stop plate in modified form.

In the drawings, A represents the frame-bar; B, the harrow-tooth; O, the stop-plate, and D the vertical bolt by which the plate is secured in position.

The tooth B may be of any approved form, and jointed or connected at its upper end to the beam or frame in any appropriate manner which will admit of its lower end swinging forward or backward in a plane parallel or substantially parallel with the line of travel, various connections for this purpose being known in the art. I prefer, however, to construct the tooth, as shown in the drawings, with its upper end bent horizontallyand later- Serial No. 215,718. [No model.)

ally at right angles to the body,in order to serve as a journal or pivot, this laterally-extended end being passed into or through a hole in the beam, as shown in the drawings. This hole may extend either obliquely or at right angles to the face of the beam,nccording to the direction in which the tooth is to swing.

The plate G, which is designed to assist the swinging movement of the tooth, support the same when in action,and prevent its accidental disconnection from the beam, is formed, as most plainly represented in Fig. 3, with a flat portion or car adapted to be secured firmly to the under side of the beam by means of the vertical bolt, D, and with a portion which is extended beyond the face of the beam ,and provided with a horizontal slot, at, through which the body of the tooth passes. In order to hold the plate the more firmly in position, I prefer to provide it, as shown,with vertical shoulders b to bear against the side face of the beam, and with vertical studs 0 to enter the under side of the beam; but it is to be understood that these studs and shoulders maybe either or both omitted, and that they may be modified in form at will, provided they retain the mode of action illustrated in the drawings.

The slot of the plate is made of such length and the plate secured in such position that when the harrow is drawn in one directionthat is to say, with one end forward--the tooth may assume a backward inclination, as shown in Fig. 1, in which position it is firmly supported by its contact with the plate at the rear end of the slot, and that when the harrow is drawn in the opposite direction the tooth will assume the upright position indicated by dotted lines in Fig. 1, and be sustained by its contact with the opposite end of the slot. The slot will be extended in a direction parallel with or oblique to the face of the beam ,according to the path in which the tooth is to vibrate in reference to the beam. In Fig. 4 the two positions of the slot are illustrated, one by full and the other by dotted lines.

The plateG may be secured to the under side of the beam in any appropriate manner but I recommend, asshown in the drawings, the employment of a single fasteningbolt passing through the plate, and thence upward entirely through the beam, the bolt thus applied serving the double purpose of holding the plate in.

position and of tying the beam together, so as to prevent it from being split or fractured by the strain of the teeth.

One of the chief advantages of my plate ap plied to the under side of the beam lies in the factthat it engages the tooth at the greatest possible distance from its pivot, thus giving a more rigid support than would otherwise be obtained.

I am aware that pivoted barrow-teeth have been combined with stirrup-bolts; also, that cap-plates in various forms have been used to secure swinging teeth to the side faces of harrow-beams; and, also, that a tooth having a laterally bent upper end has been secured by a plate to the under side of the beam. I be-. lieve myself, however, to be the first toprovide a stop-plate adapted to be applied tothe under side of a beam and extend laterally beyond the same to engage a tooth pivoted to the beam at a higher point.

\Vhile it is preferred to construct the plate with a continuous edge on the outer side of the slot, it is obvious that this edge may be formed with an opening into the slot, as shown at e, Fig. 5, through which the tooth may be conveniently removed when in an intermediate position for the purpose of sharpening the same, or for other purposes, without necessitating the removal of the plate 0.

Having thus described my invention, what I claim is 1. The combination of a harrow-beam, a

2. The combination of the barrow-beam, the

swinging tooth having its upper end extended laterally into the beam, the slotted stop-plate applied to the under side of the beam and projectedlaterally beyond its side face to engage the tooth, and a Vertical bolt passing through 5 the plate and beam, substantially as described, 1 whereby the bolt is caused to serve the double purpose of confining the plate in position and of preventing the beam from being split by the tooth.

3. The stop-plate for a swing-toothiharrow, having the surface adapted for applicationto the under face of the barrow-beam and the extended portion with a vertical slot or opening therethrongh .to receive and of the barrow-tooth.

4. The stop'plate for aharrow provided with the surface adapted for application to the under side of the harrow-beam, and also with the slot at, shoulders I), and studs 0.

In testimonywhereof I hereunto set my hand, this 6th day of October, 1886, in the presence of two attesting witnesses.

EDYVARD V. HERENDEEN.

\Vitnesses:

S. A. TERRY, J. A. ROLLINGS.

permit the play i

Images