US19321A - Improvement in plows - Google Patents

Description

G. WATT.

Plow. y

No. 19,321. Y Patented Feb. 9, i858.

UNITED STATES PATENT OFFICE.

GEORGE WATT, OF RICHMOND, VIRGINIA.

IMPROVEM ENT IN PLOWS.

Specification forming part of Letters Patent No. 19, 321, dated February 9, 1858.

To all whom it may concern Be it known that I, GEORGE WATT,0` Richmond, in the county of Henrico and State. of Virginia, have invented a new and useful Improvement in Plows; and I do hereby declare that the following is afull, clear, and exact description ofthe construction and operation of the same, reference being` had to the annexed drawingsfoiming part ot" this speci lic-ation, in which- Figure l is a mold-board elevation of plow. Fig.2 is a landside elevation. Fig. 3 is a front view, showing the curve of landside.

Similar characters of relerence denote the same part.

The nature of in v invention consists in constructing both mold-board and landside of cylindrical surfaces of equal diameters, the turn of the mold-board commencing from the eX- treme point, and the cutting-edge being determined by the intersection ofthe said cylindrical surfaces, the mold-board having itsconcavity outward and the landside the reverse, said construction being combined with a curved standard hereinafter to be described.

In the drawings, M is the mold-board, L the landside, S the standard, and B the beam.

The mold-board turns outward in a regular cylindrical surface from its intersection with the share, the elements of the cylinder being respectively parallel to this line ofintersection.

The landside L is a regular cylindrical surface of the same diameter as the cylinder of which the mold-board forms a portion, the front or euttin g edge of the plow being formed by the intersection of these two surfaces.

The standard S curves landward from the upper extremity of the cylindrical landside, being cut away and hollowed out on the moldboard side to prevent clogging, as described in my patent of December 9, 1856, reissued November l0, 1857.

The l indside L, being of cylindrical form, passes obliquely under the soil, by which the plow is rendered much more steady, as it is prevented from rising at the heel or tiltingover. It also saves the point from bevelin g from wear. It moreover leaves an overhanging arch ofsoil, which is more easily turned in making the succeeding furrow.

Owing to the perfect cylindrical surfaces of mold-board and landside and their intersection along the cutting-edge the soil is gradually turned over from the extreme point npward, by which a considerable saving in draft is effected.

TheI curving of the standard as shown in the drawings permits the rising earth to pass off without clogging under the beam.

I do notclaim, ofitself, the inclination of the landside toward the mold-board for the purpose of leaving soil overhanging the furrow, as such device, broadly considered, is not new; but

W hat I do claim, and desire to secure by Letters Patent, isu

Constructing mold-board andlandside of cy li ndrical surfaces of equal diameters, intersecting along the cnttingedge of the plow, in conibination with the curved standard S, the whole being constructed substantially as and for the purposes hereinbefore set forth.

In testimony whereof [have hereunto signed my name before two subscribing witnesses.

GEO. WATT.

Witnesses:

WM. S. SUMNEE, G. W. DYER.

Images