US1078741A - Plow. - Google Patents

Description

J. O. MGRAE, JR.

PLOW.

APPLICATION FILED OCT. 12, 1912.

1,978 741 Patented Nov. 18, 1913.

JAMES C. McRAE, an, or DUNBAR, SOUTH CAROLINA.

PLOW.

Specification of Letters Patent.

Patented Nov. 18,1913.

' Application filed October 12, 1912. Serial No. 725,469.

make and use'the same.

This invention relates to plows and has for its object to improve the construction of plows whereby the adjustment of the angle of incidence of a plow point, for deeper or shallower plowing and the raising or lowering of the plow beam, may be accomplished 7 without the use of tools.

With this object in View, the invention consists in the improved construction, arrangement and combination of the parts of a device of the character specified, which will hereinafter be fully described and af- 7 terwards specifically claimed.

In the accompanying drawings which form a part of this specification, Figure 1 is a side elevation view of my improved plow, and, Fig. 2 is a top plan view thereof.

Referring to the drawings in which similar reference characters designate corresponding parts throughout the several figures, the plow beam 5 consists of a forward end portion 6 and a rear end portion 7, a clevis 8 being secured on the forward end, by which the plow may be drawn.

Obviously, the beam may be made of a single piece of material, but I prefer to form the forward portion 6 of wood, while the portion 7 is formed of two similar flat metal bars secured to the portion 6 by means of bolts 9, the rear ends of the bars 7 being bent inwardly at 10, into contact with each other and are apertured for the reception of a bolt 11. Handles 12 are secured to the beam, in the usual manner, their medial gear portion being supported by struts 13, engaged with the bolt 11.

A stock or principal support 14 is pivotally connected at 15, to the beam, its lower end being pivoted at 16 to the forward end of a shoe 17, said shoe having a sole 18 formed thereon and adapted to lie flat upon the beam of the furrow which is being made by the plow. The rear end of the beam 5 is supported by means of a link or auxiliary support l9, pivoted to the shoe .17 by means of a bolt 20, its upper end being pivoted on the bolt 11.

The stock 1 1 is curved to conform with the under side of the mold board 21 and the plow point 22; said mold board and plow point being secured on the stock 14, by any proper means. The lower and forward end of the stock 1 1 is preferably tapered to a point and extends considerably forward of the pivot 16, so as to properly support the plow point. The base of the extended portion let, of the stock l t-and the base of the plow point 22 are normally in alinement with the base of the shoe 18, so that the draft of the plow is normally in a horizontal direction. spaced apart equal to the distance between the-pivots 16 and 20, while the pivots 15 and 16 are spaced apart equal to the distance between the pivots 11 and 20, so that the plow beam and the elongated rectilinear shoe 17 are parallel at all times and in every adjusted position on their pivots. Between 7 the bars 7, which constitute the rear end portion of the beam 5, is pivotally mounted an internally threaded sleeve 28, the pivots.

24 thereof extending through suitable apertures in the bars 7. An adjusting shaft 25 is screw-threaded at 26, this screw-threaded. portion being engaged with the screw-threads of the sleeve 23 and adapted to be rotated for moving it longitudinally through the sleeve, a hand wheel 27 being mounted upon the upper end thereofadjacent to the hand holds 12, so that one of said hand holds may be held with one hand while the hand wheel 27 is manipulated by the other hand of an operator. The shaft- 25 is in swiveled engagement at 28 with a swivel member 29, the latter being pivoted at 30 to the shoe 17.

It will be seen that when the hand wheel 27 and shaft 25 are rotated to the right, or clockwise, the distance will be increased between the pivots 2a and 30; that is, the

The pivots or bolts 15 and 11 are sleeve 23 will be drawn rearward relative to a further rotation of the shaft 25 will i-ncrease the angle of incidence between the plow point and the sole 18, so that the plow point would tend to lead the plow nearer to the surface of the ground or decrease the draft of the plow. On the other hand, it

the shaft is rotatedto the left, or contraclockwise, the plow point will be moved downward, so as to increase the suction or draft of the plow, so that the furrow would be made deeper. In this way, the draft of the plow can be quickly changed by the operator whether the plow is in operation or not, to suit the attending conditions of the soil and the height of the draft animals rangerne'nts of parts as herewith described illustrated, but my invention may only i be limited by areasonable interpretation of the-claims.

I claim: r V

1. A- plow comprising a beam, a standard pivoted thereto, a plow point thereon, a Shoe pivoted to the standard, an extension x-carried by the beam, a link pivoted at its point thereon, a beam niovably connected to the standard, a shoe pivoted to' the standard,- ext-ensionscarried by the beam, alink pivoted to" the rear ends of the extensions and the rear end of the shoe, anut swingingly supported between the extensions, a threaded shaft operable through the nut, and a meniberpivotally connecting the shaft to the sh'oe.

In testimony whereof I have signed my name to this specification i-n thepresence of two subscribing witnesses.

. JAMES C. lvIoRAE, Jn.

Witnesses:

L. J. Conn, B Brn'il ljl' B.

(foiiies of th'i s'patent may be obtained for five cents each-,by addressing the c ommi'ssioner of l atents,

Washington, I); 02

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