US1071176A - Combined plow and scraper. - Google Patents

Description

E. M. REESE.

COMBINED PLOW AND SGRAPEE.

APPLIOATION FILED JUNE 3, 1912.

Patented Aug. 26, 1913.

542 20572 flfflee 4e.

ATTORNEY WITNESSES.

mmr-unA PLANONRMH (1)., WASHINGTON. n.c.

EDWIN M. REESE, OF DALLAS, TEXAS.

COMBINED PLOW AND SCRAPER.

Specification of Letters Patent.

Patented Aug. 26,1913.

Application filed June 3, 1912. Serial No. 701,157.

To all whom it may concern Be it known that I, EDWIN M. REESE, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Combined Flows and Scrapers, of which the following is a specification.

My invention relates to new and useful improvements in plowing and scraping machinery, and more particularly to combinations of plows and scrapers.

The object of my invention is to provide a combined. plow and scraper, which may be employed to alternately break or loosen a surface that is being graded or lowered, and to scrape the loosened material from said surface.

A further object is to provide a combined plow and scraper, in which the means for plowing and the means for scraping are connected in a rigid relation, the construction being such that the plowing means may be operative during travel of the machine in one direction, and the scraping means operate during travel in the reverse direction, a change in the working positions of the parts being automatically effected when the direction of the travel is reversed.

The object of the invention is finally to provide a device of the character described, that will be simple and durable in construction and eflicient in operation, and one, the various parts of which will. not be likely to get out of working order.

These objects are accomplished by the construction illustrated in the accompanying drawing, wherein;

Figure 1 is a plan view of my combined plow and scraper. Fig. 2 is a view of the same in side elevation, showing the position assumed by the parts when the machine is acting as a plow. Fig. 3 is an end view of the machine, drawn to an enlarged scale. Fig. 4 is a vertical sectional view of that extremity of the implement, upon which the working parts are mounted, the section being taken upon the line of Fig. 1. Fig. 5'is a fragmentary vertical sectional view of the same portion of the implement, the section being taken upon the line y -y of Fig. 1. I

In the drawing, similar reference characters are employed to designate similar parts in all the figures.

The numeral 1 denotes a pair of elongated parallel beams, which are rigidly connected by a number of transverse bars 2 and by a pair of diagonal. intercrossing brace members 3. The beams 1 will preferably be of wood, and the members 2 and 3 of steel, the former member being angular in cross-scction and the latter round. The members 1, 2, and 3 together form a rectangular frame, upon one extremity of which the plowing and scraping means are supported. At said extremity of the rectangular frame, a pair of opposite clamping brackets 1- are mounted upon the beams 1, and said brackets rigidly hold the extremities of a cylindrical rod 5, transverse with the frame. A large rectangular metallic plate 6 is mounted upon the rod 5, its upper and lower edges 'eing parallel to said plate, and substantially equidistant therefrom. The connection between said plate and the rod 5 is formed by a plurality of brackets 7, mounted fast upon one side of the plate, through which brackets the rod is passed. The plate 6 is adapted to undergo a limited angular displacement about the axis formed by the rod 5, and a description will now be given of certain. means em ployed to limit such displacement.

Directly above each clamping bracket 4, there is mounted a bracket 8 of inverted V shape, having its feet equally spaced from the underlying member 1 upon the correlated beam 1. Upon the apices of the bracket 8, are mounted fast the extremities of a bar 9, angular in cross-section, and transverse in relation to the aforesaid rec tangular frame. The height of the bar 9 above the rod 5 is such that the upper edge portion of the plate (3 will contact with said bar when the plate assmnes a position slightly removed from the vertical, as shown in fulllines in Fig. 4 of the drawing. Thus it will be seen that the member 9 acts as a stop-bar and deternlines one of the limiting positions of the plate 6. Another stop-bar is formed by a member 10, parallel to the bar 9, having its extremities mounted fast upon opposite of the two brackets 8. lVhen the plate 6 is in the limiting position determined by its contact with the bar 10, said. plate forms an angle with the ground somewhat less than 45 degrees, is clearly indicated by dash lines in Fig. 4-.

A short distance above its lower edge, the

-- in said position.

plate 6 carries a row of plow members 11, having the nature of pointed bars, projecting at right angles from the plate 6, and mounted sufficiently close to each other to thoroughly break any surface upon which said plows are made to act. Somewhat closer to the lower edge of the plate 6, there are mounted three equidistant bars 12, which are somewhat shorter than the plow members, and are downwardly inclined, forming an angle of approximately forty-five degrees with said plate. The function of the projecting bars 12 will hereinafter be made clear.

WVhen the machine is traveling in the direction of the arrow shown in Fig. 2, the plate 6 occupies the position shown in said figure, the plow members 11 being operative The strain to which the plow members are subjected when in use, impresses upon the plate 6 a tendency to rotation. This tendency is resisted and overcome by the stop-bar 10, thus casing the plow members to maintain their operative positions relative to the surface supporting the machine, as long as the machine travels in the direction of the arrow shown in Fig. 2.

When the machine is traveling in the di rection of the arrow shown in Fig. 4: the plate 6 occupies the position shown in full lines in said figure, adapting said plate to act as a scraper, and rendering the plow members inoperative. The strain to which the plate 6 is subjected while exercising the function of a scraper, impresses upon said plate a tendency to rotation, which is resisted and overcome by the stop-bar 9. Thus the plate 6 will continue to exercise the function of a scraper as long as the machine continues to travel in the direction of the arrow shown in Fig. t.

When the direction of the travel of the machine is reversed, it is desirable to automatically shift the plate 6, so as to bring it to a position corresponding with the changed direction of travel.

A description will now be made of a device provided to facilitate the shifting of the plate 6 when the direction of travel is -eversed.

Upon each of the brackets a bearing 13 is mounted, said bearings being similarly attached to the legs which support the extremity of the bar 10. A pin 14 is mounted in each bearing 13 with one extremity projecting outward, and the projecting ends of said pins form pivots, upon which are mounted the upper ends of swinging arms 15. During the travel of the machine, the arms 15 drag upon the surface supporting the machine, and are inclined in a direction opposite to that in which the machine travels. The lower extremities of the arms 15 are weighted, as indicated at 16, thus increasing the natural tendency of said eX- tremit-ies to maintain contact with the ground during the travel of the machine. Beneath each weight 16, a spike 17 projects downwardly in alinement with the correlated arm. As soon as the direction of travel of the machine is reversed, the spikes 17 penetrate the surface supporting the machine and remain embedded in said surface until the machine has moved a sufficient distance to swing the arms 15 to their limiting positions of rearward inclination with the changed direction of travel. As the arms 15 pass through a vertical position, in undergoing the change described, they slightly elevate the correlated end of the rectangular frame, thus permitting the plate 6 to more readily undergo the necessary angular displacement by freeing said plate from firm contact with the ground. The members 15 are essential in shifting the plate 6 from the position shown in dotted lines in Fig. 1 to that shown in full lines in the same figure, although they might possibly be dispensed with in accomplishing the reverse change. When a change in the direction of travel of the machine takes place, the plate 6 swings from a position in which the lower edge of said plate rests upon the ground, to a position in which the extremities of the plow members 11, rest upon the ground, or vice versa. In order to facilitate the change in the position of the plate, the pointed bars 12 are made to form a means for supporting said plate intermediate of its two limiting positions.

With each of the two arms 15, there is correlated a keeper member 18, having the nature of a horizontal bar mounted upon the outer surface of the correlated beam 1 and spaced therefrom, the extremities of the bar being secured to said beam at points equidistant from the vertical position of the arm.

It will be readily seen from the above ex' 110 planation that the invention is such as to endow one machine with dual functions of a plow and scraper, these functions being automatically made to correspond with the direction of travel of the machine. By ef- 115 fecting such a combination, the work of grading or excavating may be carried on with greater economy of time and labor than is permitted by the methods now commonly employed.

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

.Vhat I claim is;

1. A combined plow and scraper, comprising a rectangular frame, a combined scraping and plowing member, said combined scraping and plowing member being pivotally mounted at one end portion of 130 orin /e said frame and consisting of a scraper memher to which a pluralit Y of plowing members are rigidly secured, a transverse bar for keeping said combined scraping and plowing member in a certain position during the scraping operation and a transverse bar for keeping said combined scraping and plowing member in a certain position during the plowing operation.

2. A combined plow and scraper, comprising a rectangular frame, a combined scraping and plowing member, said combined scraping and plowing member being pivotally mounted at one end portion of said frame, and consisting of a scraping member to which a plurality of plowing members are rigidly secured, and a plurality of members adapted to shift the combined scraping and plowing member from the scraping position to the plowing position and Vice Versa when the direction of travel is reversed, said members being rigidly se- I cured to said combined scraping and plowing member.

I 3. A combined plow and scraper, comprising a rectangular frame, a combined t scraping and plowing member pivotally I mounted at one end portion of said frame ,and consisting of a scraping member to which. a plurality of plowing members are irigidly secured, and members adapted to i raise that portion of the frame including J said scraping and plowing member during i the shifting of said scraping and plowing member from the scraping position to the plowing position or vice versa.

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

]; EDWIN M. REESE.

Witnesses:

W. A. JAoKsoN, H. M. CUNNINGHAM.

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

Washington, D. G.

Images