US415410A - George gillies - Google Patents

Description

(No Model.)

G. GILLIES.

HARROW N0.415,410. Patented Nov. 19, 1889.

I 1F J J other.

UNITED STATES PATENT ()FFICE.

GEORGE GILLIES, OF GANANOQUE, ONTARIO, CANADA.

HARROW.

SPECIFICATION forming part of Letters Patent No. 415,410,dated November 19, 1889. Application filed April 13, 1839. Serial No. 3 07,097- (No model.) Patented in Canada December 14, 1888, No. 30,400-

T0 all wh0m it may concern Be it known that I, GEORGE GILLIES, a subject of the Queen of Great Britain, residing at Gananoque, in the county of Leeds and Province of Ontario, Canada, have invented a new and useful Improvement in Spring- Tooth Ilarrows, (for which I have obtained a patent in Canada, No. 30,&OO, dated December 14, 1888,) of which the following is a specification.

This invention relates to spring-tooth harrows; and it has for its object to provide a device of this class which shall be simple in construction, strong, and durable.

The invention consists, first, in an improved construction of aharrow-frame which is made of a series of flat metallic bars provided at their adjacent edges with ribs or webs which are removed or notched at the intersecting points, by which construction great strength and rigidity are attained.

The invention consists, secondly, in an improved clip for attaching the spring-teeth at the point of intersection of the harrow-bars, whereby the said harrow-bars are also connected without the use of bolts, the use of which would necessitate the punching, and consequently the weakening, of the harrowbars.

The invention further consists in the improved construction and arrangement of details, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure 1 is a top view of a part of my improved harrow, showing two intersecting harrow-bars and the clip for connecting the same and for attaching the spring-tooth. Fig. 2 is a vertical sectional view taken on the line :0 0c in Fig. 1. Fig. 3 is a sectional view on the line y y of Fig. 1. Fig. 4 is a detail perspective view of the combined clip and spring-tooth holder. Fig. 5 is a perspective view of a portion of two of the intersecting harrow-bars separated from each The same letters refer to the same parts in all the figures.

A A designate the bars of the harrow, which may be arranged diagonally, or at rightangles to each other,and which are constructed of channel steel or iron, and the outer sides of which are provided with longitudinal segmental grooves 13, whereby surplus material is' dispensed with. The inner or adjoining faces of the bars A A are provided along their edges with webs or flanges C C, which at the point of intersection of the said harrow-bars are notched, as shown at D D, to enable the faces of the said bars to come closely together, so that the portions of the flanges C of each bar located intermediately between the notches shall bear against the face of the opposite bar; or, if preferred, the ribs or webs may be wholly removed at the point of intersection of the bars, so as to cause the faces of the latter to come into contact with each other.

E designates a clip, the legs of which are seated in the angles at the intersection of the harrow-bars, their screw-threaded ends F F projecting above the same.

G designates the clip-plate, which also serves as a tooth-holder. Said plate is provided with laterally-extending ears or lugs H H, having perforations 1, whereby they are adjusted upon the clip. The under side of the clip-plate G has a convex-curved seat to accommodate the crown or head of an ordinary spring-tooth, and it is provided along the edges of said seat with longitudinal flanges K K to hold the tooth securely and prevent it from vibrating when the clip or clamp is tightened.

The operation of this invention and its advantages will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed.

The parts composing my improved harrow are few, consisting merely of the harrow-bars, the clips, the clip-plates or tooth-seats, and the spring-teeth, and the harrow may consequently be easily and quickly put together. The simplicity of construction also insures great strength and durability, and the clips perform efficiently the double purpose of connecting the harrow-bars and of securing the spring-teeth thereto without the use of separate seat-blocks or other devices.

Having thus described my invention, I claim 1. A harrou frame composed of metallic bars crossing each other, said bars being provided with longitudinal segmental grooves in theirouter faces and with ribs or webs along the edges of their inner faces, said ribs or webs being removed, notched, or broken down at the points of intersection of the harrowbars, in combination with clips for connect ing said barrow-bars and securing the springteeth at their points of intersection,substantially as set forth.

2. In a harrow, the combination of the metallic bars crossing each otlier and provided with ribs or Webs around the edges of their meeting faces, said ribs or webs being removed,notched, or broken down at the points GEORGE GILLIES.

\Vitnesses PHILIP HEASLIP, G. HEASLIP.

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