US5973A - Improvement in plows - Google Patents

Description

fastened. Fig. 4 is a plan of the scraper or UNITED STATES PATENT OFFICE.

NERI BLATOHLY, or WINDSOR, NEW YORK.

Y IMPROVEMENT IN PLows.

Specification forming part of Letters Patent No. 5,97 3, dated December 19, 18l8.

To all trlzom it may concern.-

Be itknownthat I, NERI BLATOHLY, of Windsor, in the county of Broome and State of New York, have invented certain new and useful Improvements in Plows, of which the following is a full, clear, and exact description, reference being bad to the annexed drawings of the same, making partof this specification, in which- Figure 1 is a perspective view, showing the several parts of the plow in connection. Fig. 2 is aperspective view ofthe share or point detached from the mold-board, and reversed to show the rib extending the entire length ofthe bottom to form a rabbet or groove to receive the lower edge of the mold-board. Fig. 2 is an auxiliary figure, showing a modified form of the point. Fig. 3 is perspective view of the cutter and the plate in which its upper end is mold-board clearer.

The same letters indicate the sameparts in all the figures.

The mold-board, standard, landside, and point of my plow are made of cast-iron. The cutter is of cast-iron or steel. The mold-board and colter clearer is of iron and steel, and the stock is made of wood, construced and arranged in any suitable manner. The mold-board is of such a form that in any line drawn along its face parallel to the sole of the plow it is perfectly straight, while any line perpendicular to the sole would be curved. The lower edge of the mold-board makes an angle of about twenty-seven degrees and the top an an gle of about forty-eight degrees with the landside or line of motion of the plow. The faeeof the mold-board thus formed and arranged resembles one side of a thin spiral wedge. It turns the furrow with great smoothness and regularity,and with but little friction, thus rendering this plow remarkable for the lightness of itsdraft.

The share or point is secured to the lower front edge of the mold-board by means ofscrewbolts, or otherwise, and thejoiningis strengthened by a flange or rib, a, extending the entire length of the under side of the same, forming an oblique rabbet or groove,into which the lower edge of the mold-board accurately fits. This rib adds greatly to the strength of the point,

which, being long and slender,would very readily break unless thus strengthened.

The usual mode ofstrengthening thejoining of the point and mold-board is by forming on each end of the under side of the point a short oblique rib, the lower edge of the mold-board being notched to correspond therewith, and forming that kind ofjoint known by the name of shiplap. The objection to this way of fastening is thatthe. projections on the point are constantly snapping off, which renders the point useless, and rendering it necessary to incur the expense of replacing it by a new one, which in its turn may in like man her very soon be spoiled.

The strengthening-rib,extending the entire length of the joint in myimproved point, renders it as strong there as in any other part. Consequently it seldom or never breaks.

My point is so formed that it is a smooth and regular continuation of the surface and outline of the mold-board, having no projecting wings or angular recesses, like those of the ordinary plow, to catch upon, entangle, and drag roots and fibers, which greatly increase the draft. Hence it is that the absence of these irregularities in the outline of my point is a great benefit tothe plow. 0n the landside end of the point a rib or cutting-edge, c, is raised, narrow at the bottom or near the point, and gradually widening as it rises until it meets the lower end of the cutter b, with which it joins, both together forming a regularly-curved and symmetrical cutting-edge from the beam to the point, which edge penetrates the soil, making the incision which separates the furrow from the land.

The cutter is of the form represented in Fig. 3, and is placed in a rabbet formed to receive itin thefront edge ofthe standard and landside end of the mold-board, where it is securely held by a screw-bolt, which passes through the standard, and by a plate,'0, into which its upper end is fastened, which plate is secured to the under side of the beam. The cutter may be made of any suitable size and proportions.

The accum ulation of sods, roots, stubble, and otherobstructions upon the colter or standard, and of adhesive earth upon the mold-board, so common in the use of the ordinary plow, is always a great impediment, produces great hindrance, and frequently,with impatient or careless plowrnen, renders the plowing very superficial and imperfect,which induces a corresponding deficiency of the crop, for it is an established fact that a thorough npturning and pulverizing ot' the soil is an essential prerequisite to its productiveness. To remedy this evil I have devised a scraper or clearer, D, which is formed of steel of spring temper, and is fastened by its shank to the under side of the front end of the beam. The blade scrapes the adherin g earth from the mold-board and detaches the grass, stubble, &c., from the colter. The shank dis secured to the under side of thebeam at such a distance before the standard as will give the required degree of flexibility and freedom of motion to the scraper. motion of the scraper and clearer is produced by their coming into contact with obstructions, which raises it, the recoil or tension of the spring forcing them down again the instant the obstruction is passed; or this vibratory motion may be communicated by means ofa cord, 1;, held in the hand of the plowman and connected with the top of a standard, 8, erected The vibratory from the shank of the scraper, which cord, being pulled, will depress the scraper, and the spring will raise it again. Thus the motion may be continued at pleasure.

What I claim as my invention, and desire to secure by Letters Patent, is-

Removing earthy and other adherentobstructions from the surface of the mold-board of the plow by means of a scraper, D, mounted upon a spring-lever, d, which renders it self-acting, and which may also be operated by a string, 12, one end of which is attached to either thelever or scraper and the other held in the hand of the plowman, the several parts being constructed and operated substantially as herein set forth.

In testimony whereotlhave hereunto signed my hand in presence of two subscribing witnesses.

NERI BLATCHLY. Witnesses:

AMBRDSE BLATCHLY, HORTENAIUS BLATcHLY.

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