US269734A - Thomas spencer - Google Patents

Description

(Model.)

T. SPENCER.

PLOW.

No. 269,734. Patented Dec. 26', 1882.

N. PEYERS Phaxw-Lilhognphnr. wax-hingen. n.0.

UNITED STATES PATENT OFFICE.

THOMAS SPENCER, OF ATLANTA, GEORGIA.

PLOW.

SPECIFICATION formingpart of Letters Patent No. 269,734, dated December 26, 1882.

Application tiled October 16, 1882. (Model.)

1`0 all 'whom it may concern:

Be it known that I, THOMAS SPENCER, a citizen of the United States. residing at Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Plows; and 1 do hereby declare that the following is a full, clear, and exact description of the same, reference being had totheannexed drawings, makinga part of this specilication, and to the letters and figures of reference marked thereon.

Figure l of the drawings is a perspective view, and Fig. 2 a longitudinal vertical section, of my invention.

This invention relates to certain new and useful improvements in plows for breaking and working rough ground and the object of the present invention is to produce a plow that will yield or relievev itself from any obstructions--such as stones, roots, or stumps-that may come in contact with the points in the line of dralt, without lifting ot' the plow bythe operator, or strain upon the team, thus decreasing and lightening the labor ot' both. A further object is to provide a means whereby the plow may be readily drawn from one placeto another without turning it upon the side, thereby lessening the drag, while at the same time the said plow o1" plows may be relieved of all dirt, brush, or othertrash that may have accumulated thereon. These objects I attain by the construction substantially as shown in the accompanying drawings, and hereinafter described.

In the drawings, A represents arectangular frame having handles B and beam C, said beam being suitably braced by rods or plates a, extending from bearings l1, midway upon the under faces of the side pieces ofthe frame to the forward end of said beam. In these bearings b revolves a suitable shaft, D, to which is adjustably keyed an arm-ease, E, carrying a proper position'until the saine comes in contact with some obstacle too great for the power applied to overcome. This catch d is connected by means of a rod, e, to a pivoted bar or plate, j', which in turn connects byarod, g, with the clevis h, which works by suitable connections in a slot, i, iu the end ofthe beam C to raise said catch from the ratchet or cam wheel c when the plow-point comes in contact with an unyielding obstruction, allowing said plow-point to turn back and give place to the next, the catch d engaging with the next indentation or projection upon the wheel c as the shaft D, carrying the arm-case E, makesa partial revolution. The catch d is raised to disengagev itself with the ratchet or cam wheel c by the bolt m pressing in an outward direction against the end of the rod g, or that portion ofthe rod or its connection extending laterally through the slot t' in the beam C as the clevis is drawn forward.

The degree of force required before the plow will yield to an obstruction is regulated by means of a spring, G, or its equivalent, attached to the beam C and regulated by a screw or bolt, k, passing through the bar or platef, and bearing on said spring to give it the required tension.

When the plow strikes an obstruction-say a root, for instance-and falls back the next plow does not come into action untilsufticient ground has been passed to clear said obstruction, and thus little or no check is given to the team or operator, thereby allowing the breaking or working ot' rough ground without sudden stops orjerks, which are annoying to the operator and irritating to the team, andot'ten break or otherwise damage the plow.

Should the plow become clogged, or the operator for any other reason desire to relieve it, he forces down a lever, Il, pivoted to one of the side pieces of the frame, with its end shaped so as to come under the catch d, thereby raising said catch and admitting of the plows revolving, thus doing away with the necessity of turning the plow upon its side, as is usually done with plows ofthe ordinary construction.

A stirrup or trigger, I, is pivoted at its eX- treme lower end to the rear cross-piece of the frame A, and extends out laterally' toward one of the handles B, and up through a guide sleeve or band, [,eucircling the handle. The extreme IOO upper end of the stirrup or trigger I is bent, l what I claim as new, and desire to secure by as shown at. n, to extend over the lever H. Now, when it is desired to hold the catch d disengaged with the Wheel e the lever H, when pressed down, will raise the catch, as hereinbefore stated, and by pressing` up the stirrup or trigger I the curved or bent end n will be brought over the lever and hold it pressed against the catch, thus allowing the shaft D to freely turn within its bearing. Vhen desired to again bring the plow into action this stirrup or trigger is pushed down by the foot of the operator. By lthis action the lever is released and the catch engages with the ratchet or cam wheel upon the shaft carrying the armcase.

Although l have described my invention as particularlyapplicable to plows for breaking and Working rough ground, the saine may be used for harrowing, and a double set of plows or teeth may he employed upon the shaft, it' desired.

Having now fully described my invention,

Letters Patent, is

l. The rod g, connected to the clevis h, in combination with the spring G, bar or platef, and set-screw 7i', substantially as and for the purpose described.

2. The combination, with the ratchet-Wheel c and pivoted catch cl, ot' the lever H and stirrup or trigger I, substantially as and for the purpose set f'orth.

3. The spring' G and pivoted bar or plate j and the rods eg, in combination with the clevs It, bolt m. shaft D, carrying plow-points or barrow-teeth, the wheel c, and catch d, sub stantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my naine in the presence ot' two witnesses.

THOMAS SPENUEB.

Witnesses:

J. R. THOMPSON. NV. J. SPEAINE.

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