US787647A - Plow. - Google Patents

Description

PATENTED APR. 18, 1905.

.No.787,64'7.- V v J. P. SMITH. I

PLOW-. APPLIOATION FILED NOV.7,1904.'

Witnesses UNITED STATES Patented April 18, 1905.

PATENT, OFFICE- JAMES P. SMITH, RAEFORD, NORTH CAROLINA.

SPECIFICATION forming part of Letters Patent No. 787,617, dated April 18, 1905.

Application filed November 7, 1904. Serial No. 231,774.

To all whom it may concern.-

Be it known that 1, JAMES P. SMITH, a citizen of the United States, residing at Raeford, in the county of Cumberland and State of North Carolina, have invented a new and useful Plow, of which the following is a specification. Y

This invention relates to plows, and has for its object to improve the construction and increase the efficiency and operativeness without material increase in the expense of manufacture.

With these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by likedesignating characters, is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, as various changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing from the principle of the invention or sacrificing any of its advantages.

In the drawings, Figure l is a side elevation with the plow in section. Fig. 2 is a bottom plan view with the standard adjusted to its lower position or in position to provide for the transportation of the implement. Fig. 3 is a detail side view illustrating the adjustment for elevating the point of the moldboard above the heel-plate. Fig. 4 18 a sectional detail on the line 4 4 of Fig. 1. Y

The beam 10 of the improved plow is pref.- erably of steel, curving downwardly at the rear end and provided with means, such as a hook 21, for attaching the draft-animals in the usual manner. The heel end of the beam is provided with a circular cavity 23, having convex sides and adapted to receive a circular stub 12 on the rear end of a heel-plate 11, the stub being concaved to correspond to the convex interior surface of the cavity. The cavity.

will be first formed with its inlet as large or larger than the interior to freely receive the stub, and then after the latter is inserted the extremity 24 of the cavity will be bent upward by force to decrease the inlet and prevent the withdrawal of the stub and attached heel-plate longitudinally, while the coacting concave and convex surfaces effectually pre-' vent lateral movement. Thus the heel-plate is free to swing vertically upon the heel end of the beam, but is firmly held from. lateral movement.

A standard 13 is provided in elongated U form and pivotal ly connected to opposite sides of the forward end of the heel-plate, as at 14, and embracing the opposite sides of the beam by the spaced sides near the closed end. The standard is provided with two set screws, one, 15, hearing against the outer face of the beam and the other, 16, bearing against the side of the beam, and the two sides of the standard are also connected beneath the beam -by a transverse stop 17 for bearing against the beam.

The moldboard 18 is secured to the standard in the usual manner by a heel-bolt 19, and the handles 20 are also attached in the usual manner to the beam. 1

The curve of the beam 10 is eccentric to the pivot-point 14 between the standard and heelplate, the beam being farther from the pivot 14 at the heel end of the beam than at the forward end of the curved portion, so that as the standard is elevated toward the perpendicular the draft end 21 of the beam will be elevated correspondingly by the pressure of the stop 17 upon the under side of the beam. By this arrangement it will be noted that the pitch of the moldboard may be adjusted to any required extent by moving the standard along the curved portion of the beam and held firmly at any desired point by the set-screws 15 16. It will also be noted that the action of adjusting the standard and moldboard will correspondingly adjust the draft end of the beam vertically by reason of the eccentric curve of the beam, as before noted. An additional adjustment may also be secured by means of the rear set-screw 15 to an extent equal to the movement of the beam within the area between the stop 17 and the closed upper end of the standard.

Another adjustment which may be quickly accomplished and which is a very important and valuable feature of the invention is to loosen both the set-screws 15 16 and permit the standard and its attached moldboard to fall to the lowest point, as indicated in Fig. 3, which action throws the point 22 of the moldboard out of the ground or above the lower line of the heel-plate, so that the implement may be easily transported without danger of the moldboard cutting into the ground. This is a very useful and convenient advantage when the plow is tobe moved from place to place, as will be obvious.

The device is simple in construction, strong and durable, can be inexpensively manufactured, and will be found very effective in action.

The adjusting-screws l5 16 are provided with relatively large hand-wheels to facilitate the operation, and being located above and at the side of the beam are easily accessible to the operator from his position at the rear.

Having thus described the invention, what is claimed is 1. In a plow, a curved beam having a heelplate pivotally connected with its lower end,

an elongated U-shaped standard straddling the beam and connected pivotally by its spaced ends with opposite sides of the forward end i and which is thereby adjustable by said standard, and means for securing the latter in adjusted position with relation to the beam.

2. In a plow, the beam having a transverse socket-cavity in its heel end with convex walls, a heel-plate having a stub at one end for engaging said cavity and with concave sides corresponding to the convex walls of the cavity said socket-cavity adapted to be closed around said stub portion by compressing the beam material at one side of the cavity, a standard connected to swing from the forward end of said heel-plate and adjustably associated with said beam, and a moldboard connected to said standard.

In testimony that I claim the foregoing as my own I have hereto afliXed my signature in the presence of two witnesses.

JAMES P. SMITH.

Witnesses:

N. S. BLUE, H. W. MCDIARMID,

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