US774324A - Plow. - Google Patents

Description

UNITED STATES Patented November 8, 1904:.

PATENT OEEicE.

JOHN BONES HILL AND JOHN NICK STROM, OF EDGEFIELD, SOUTH CAROLINA. I

PLOW.

SPECIFICATION forming part of Letters Patent No. 774,324, dated November 8, 1904.

Application filed March 8, 1904:.

To all whom it may concern.-

Be it known that we, JOHN Bonus HILL and JOHN NICK STROM, citizens of the United States, residing-at Edgefield, in the county of Edgefield and State of South Carolina, have invented new and useful Improvements in Plows, of which the following is a specification.

This invention relates to improvements in plows, and particularly to subsoil-plows which are so formed as to be capable of cutting and raising the ground without encountering great resistances.

The invention consists in a plow having a point of generally triangular contour, a heel projecting rearwardly from the said point, and a standard engaging the attaching-arm projecting upwardly and rearwardly over the point.

It also consists in a plow-point havinga triangular cross-sectional shape, a heel projecting rearwardly from the point and capable of supporting a lateral cutting mechanism, an attaching projection extending from the said point, and a removable cutting attachment secured to the heel of the plow.

It also consists in certain other combinations and arrangements of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 represents a perspective of a plow constructed in accordance with our invention; Fig. 2, a top plan View of the point; Fig. 3, a section across said point on line 3 3 of Fig. 2; Fig. t, a similar section on the line L 4: of said Fig. 2; Fig. 5, a detail perspective of the subsoiling attachment, and Fig. 6 a detail of an attachment for widening the scope of the points action.

The details of construction of frame of the plow are immaterial as far as regards the beam, handles, &c., as any preferred or desired form can be used. The stock A, depending from the usual beam, is provided with a shouldered portion forming recess (4, within which is seated the attaching end of a point B in such manner as to carry its base parallel to the beam, or substantially so, the point be- Serial No. 197,376. (No model.)

ing held in this position by a bolt a, which passes through an openingin the stock A and the upward extension of the point B.

The forward end of the pointB is approximately triangular in cross-section, the whole point being integral or formed with a removable and interchangeable pointed end, the said end or point having three cutting edges, two of which are at the lower edge of the point and parallel to the ground, at the point 3 3 the cross -sectional shape being practically that of an equilateral triangle. The sides are preferably parallel from this point to the rear end or heel, as shown in Fig. 2; but the central vertical cutting edge is given agradual rise or curvature until it joins the stock at a point near the cross-section line 4 at, Fig. 2, being substantially as shown in Fig. 4:. This form offers less resistance to the earth, and the shape tends to cleave the ground on a horizontal plane as the lift of the angular sides increases the strain on the two lines of cut produced by the lower edges. At the rear the point is extended to form a heel C, projecting rearwardly from the stock A.

The heel C is not only useful in supporting the plow-point at a proper angle and giving it a steady movement in the ground, but affords a means for properly supporting attachments which cooperate with the action of the plow-point. As shown in the drawings, it is often advisable to employ cutters which will be capable of widening and extending the lateral cuts made by the lateral edges of the plow-point. We haveillustrated in the drawings such a cutting mechanism, as at D in Fig. 5, the attachment D consisting in a recessed plate having a central offset portion capable of fitting upon the heel C and provided with angular rings E, which project horizontally from the heel-inclosing portion of the said plate. The attachment D is preferably secured rigidly to the heel by means of a bolt F,

which is passed through registering openings Various forms of attachment may be used as long as they tend to increase the force and size of the horizontal out and lift exerted by the angular point, and it is not essential that the device should be attached to the heel C. The form shown in Fig. 6, adapted to certain work in lighter soils, shows two wings or sweeps G G, having their lower edges extended outwardly and rearwardly in plane with the horizontal base of the point, and an upwardly-extended bracket H, by which the wings are secured to the rear of the stock A by the bolt a.

What we claim, and desire to secure by Letters Patent, is

1. A subsoil-plow comprising a point having a triangular cross-section, the flat side of the triangle facing downwardly, a heel projecting rearwardly from the pointand continuing the flat bottom surface of the point, and an upwardly-extending portion of the point projecting above the heel for securing the point to the standard of the plow.

2. A plow comprising a sharp point, a rearwardly-extending heel made integral therewith, the heel continuing the bottom or hearing surface of the point, an integral attaching projection extending upwardly from the point, and a cutting attachment having a socket formed therein for receiving the heel of the plow-point, the lateral cutting portions of said attachment Widening the cut made by the lower edge of the point.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN BONES HILL. JOHN NICK STROM.

Witnesses:

WM. S. COYBURN, J. H. ALLEN.

Images