US1083606A - Moldboard. - Google Patents

Description

J. S. FERRIS.

MOLDBOARD. APPLICATION FILED APR. a, 1913.

1,083,606. Patented Jan. 6, 1914,

' James :5. Ferrzls;

COLUMBIA PLANOORAPH conwAsamu'tcN. n. c.

UNITED STAT JAMES S. FERRIS, OF WAXAHAGI-IIE, TEXAS.

MOLIDBOARD.

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Specification of Letters Patent.

Patented Jan. 6, 1914:.

Application filed April 3, 1913. Serial No. 758,533.

To all whom it may concern:

Be it known that I, JAMns S. Fnnnrs, a citizen of the United States, residing at WaXahachie, in the county of Ellis and State of Texas, have invented certain new and useful Improvements in Moldboards, of which the following is a specification.

My invention relates to mold boards for plows, and relates more particularly to that type of mold board which has its working face coated with plaster of Paris to more eiiiciently shed sticky or moist soil, such as that commonly termed black waxy land.

In the present practice, the plaster of Paris coating is held upon the working face of the mold board by bolting or riveting certain pieces upon said face to provide a retention to said coating, and in order that the holes for the rivets or bolts may be bored, the temper must be drawn out of the mold board and again restored after the holes have been bored. This process is rather expensive and moreover is apt to leave the mold board in an impaired condition. This method of retaining the plaster of Paris coating upon the mold board face is further objectionable for the reason that a very considerable amount of work is necessary to remove the said pieces when it is desired to use the plow without the plaster of Paris coating.

It is the object of my invention to provide a device for retaining a plaster of Paris coating upon a mold board, which device may be easily attached to or detached from the mold board, without necessitating boring any holes in the mold board or otherwise altering the same.

A further object of my invention is to provide a device that will be strong, durable, simple and eflicient and comparatively easy to construct and one which will not be likely to get out of order.

With these objects in view, my inventlon has relation to certain novel features of the construction and use, an example of which is described in the following specification, and illustrated in the accompanying drawing, wherein:

Figure 1 is a top view of a mold board provided with a plaster of Paris coating retained by the novel device constituting my invention. Fig. 2 is a transverse sectional view taken upon the line m-m of Fig. 1.

Referring now more particularly to the drawing, wherein like reference characters designate similar parts in both of the figures, the numeral 1 denotes an ordinary plow mold board having its working face coated with plaster of Paris as indicated at 2. The short edge of the mold board which will come adjacent to the plow point is designated by the numeral 1 Upon the two opposite elongated edges of the mold board are mounted rods 8 and 4 of circular cross section, which rods conform to the curve of said mold board edges and serve to retain the plaster of Paris coating against a displacement parallel with the mold board face. Since the cylindrical surfaces of said rods 3 and 4: permit a certain amount of the plaster of Paris to enter between said rods and the mold board face, they will also to some extent retain the coating against displacement outward from the mold board face. To each of said rods there is pivotally secured a number of hooks 5, the hooks 5 of one rod being extended toward those of the other and engaged with same as indicated at 5 The lengths of the hooks will preferably be such that engagement between the two sets will be made above the center portion of the mold board. The rivets which establish a pivotal connection between the hooks 5 and the correlated rods 3 and 4 are designated by the numeral 6. The outer end of each hook 5 is formed with a hook 7 which is adapted to engage the correlated mold board edge as is clearly shown in Fig. 2. The members 5 serve the double purpose of reinforcing and retaining the plaster of Paris coating and also retaining the members 3 and a in their proper positions relative to the mold board. The members 5 will preferably be spaced slightly above the mold board face in order to better retain the plaster of Paris coating against displacement from said face.

The above described device is such that it may be very quickly applied to a mold board before the plaster of Paris is poured upon the same, and when it is desired to use the mold board in the ordinary manner, the plaster of Paris may be broken off and the retaining device easily removed.

The invention is presented as including all such modifications and changes as properly come within the scope of the following claims.

What I claim is:

1. In a composite mold board, an imperforate plate, having a continuous face free from marginal projections, a marginal retaining device removably mounted along two edges of the plate, and a coating of plastic material deposited on the face of plate and confined by the marginal retaining device.

2. In a composite mold board, an imperforate plate having a continuous face free from marginal projections, a marginal retaining device comprising means engaging two edges of the plate and adapted to hold the retaining device on the plate, and a coating of plastic material deposited on the face of the plate and confined by the marginal retaining device.

3. In a composite mold board, a met-a1 plate, a pair of opposed marginal retaining members shaped to conform to opposite edges of the plate, means connected with the members for engaging the edges of the plate, connections between the said means extending over the face of the plate, and a coating of plastic material deposited on the face of the plate embedding the connections and retained by retaining members.

4. In a mold board, a metal plate, marginal retaining members, hooks carried by said members and engaging over the edges of the plate, connections between the members extending over he face of the plate,

and a coating of plastic material deposited on the face of the plate concealing the connections and retained by the members.

5. In a composite mold board, a metal plate, marginal retaining members disposed in opposite relation along opposite edges of the plate, hooks pivoted to the members in opposed relation and engaging each other between the members and also engaging the edges of the plate, and a coating of plastic material deposited on the face of the plate concealing the hooks and retained by the members.

6. In a device for retaining a plastic coating on a plow mold board, a pair of opposed retaining members shaped to conform to the contour of opposite edges of a mold board, devices connected to the members for engaging said edges of the mold board, and connections extending between devices, said members being adapted to retain a coating of plastic material on the face of the mold board and to confine the plastic material.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. 7

JAMES S. FERRIS.

WVitnes'ses:

J. T. SPENCER- N. GAMMoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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