US272936A - Thomas v - Google Patents

Description

T. V.-ALLIS.

(No Model.)

METALLIC BARBED FENCING. No. 272,936. Patented Feb.27, 1883.

UNITED STATES PATENT OFFICE.

THOMAS V. ALLIS, OF NEW YORK, N. Y.

METALLIC BARBED FENCING.

sPEcIFICATloN forming part of Letters Patent No. 272,936, dated February 27, 1883.

Application filed February 11, 1882.

(No model.)

To all whom it may concern Be it known that I, THOMAS V. ALLIs, of the city and county of New York, State of New York, have invented a new and useful Improvement in Metallic Barbed Fencing, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, making a part of this specification.

This invention consists of animproved con struction or manufacture of ribbed metallic strip blanks for barbed fencing, and barbed fencing rods or strips made therefrom.

Theimprovements consist in forming metallic strips of approximately flattened or of elliptical or oval form in cross-section, (preferably elliptical,) having longitudinal ribs along one or both sides, intermittent or at desired distances from each other, such ribs being narrower than the strips, and usually extending along the center of the flat or oval sides of the strips, and in forming the barbed fence strip or rod therefrom, as hereinafter more particularly specified. Thesestripsaregenerallyaboutonequarter of an inch in width and the ribs about one-third the width of the strip. The size and width of the strips and ribs may, however, be

varied from that above mentioned, if desired.

Figure 1 is a top view of my improved ribbed metallic strip-blank. Fig. 2 is a side elevation of the same. Fig. 3 is a crosssection of the same through one of the ribs. Fig. 4. is a side elevation of the strip, showingthe ribs severed at each end. Fig. 5 is a top view of the barbed strip after the ends of the ribs have been bent outward and the barbs formed. Fig. 6 is a side view of the same when twisted and completed. Fig. 7 is a view of a pairof rolls by which the ribbed strips may be formed.

The flattened or elliptical strip A, having longitudinal ribs B along one or both of its sides, intermittent or at desired distances apart from each other, constitutes the ribbed strip of my invention. The ribsB usually taper slightly toward each end on their sides and top surface, one or both, for about one-third of their length, so that their ends, when severed from thestri p and bent away therefrom, will be somewhatpointed. These strips may be forged or made by any mechanism, but are most conveniently and cheaply made by the use of rolls, apair of which suitable for such purpose are shown in Fig. 7. r

The ribbed strips or blanks A may be flat, or substantially so, except at the ribbed portion, but are preferably of elliptical form or outline in cross-section. As the passes or grooves Z l in the rolls D D, to form an elliptical or oval strip, will be somewhat deepest at their centers, and the strips or blanks can be readily formed with such rolls from round wire, as the wire will naturally, from the shape of the passes or grooves in the rolls, keep a central position in the passes, a more uniform ribbed strip willbe produced. The wire used should be of a diameter somewhat greater than the greatest vertical depth of the passes, so as to furnish surplus metal to form the edges of the strip and the elevated or projecting ribs thereon.

To form the ribs B upon the surface or surfaces of the strip A separate and apart from each other, recesses 0, corresponding in length, width, depth, and form with the ribs desired, are cut in one roll, preferably the lower one,

I), at the proper or determined distances from each other. 4 The blanks will thus be delivered from-the rolls D D in a continuous strip of the prescribed form, having the ribs Ben the side or sides thereof and integral or solid therewith. The ribs B, it will be seen, are not creased or narrowed at their base along the surface of the strips, as described in another application made by me, but have the same breadth for the whole of their depth. This construction or form of the ribs saves or renders unnecessary one passing of the strips through the rolls. The ribbed strip A having been thus formed, the ends-one or both-of the ribs are sheared or cut by any convenient mechanism, from along the sides of the strips, a suitable distance for the length of the barbs, as shown at a, Fig. 4, usually about one-third the length of the rib, and the cut portions or ends of the ribs are then bent, as shown at b,

Fig. 5, thus producing a fence-strip with barbs projecting therefrom. The ends of these ribs are preferably bent sidewise or laterally with respect to the flattened surface of the strip,

rather than upward or at right angles thereto,

IOO

performed, as the former, against which they are bent, and which gives the required curves at the base of the barb, can be more conveniently applied and used and the ends of the ribs more easily and rapidly bent than if bent vertically upward. The ends of the ribs B are preferably bent in opposite directions, so as to form barbs on each side of the strip; but they may be bent outward only in one direction in stead of in opposite directions, if for any reason desired. After the ends of the ribs have been so bent to form the desired barbs the strips may be twisted, as shown in Fig. 6, and the rod is then ready for use. A flattened or approximately flattened fence-strip is also more effectual as a fence than when the rod is round, as it has greater elasticity, is more easily noticed by animals, and therefore more regarded by them.

What is claimed is 20' 1. A rolled metallic strip-blank, A, of flattened or elliptical form in cross-section, provided at intervalswith flanges or fins projecting from the flattened or'wider face of the strip, and adapted to be partially severed therefrom 2 5 to form barbs, substantially as described.

2. A Wrought metallic barbed rod for fencin g, of flattened or elliptical form in cross-section, having barbs integral therewith on and projecting from the flattened side or sides of 0 the rod, all substantially as set forth.

THOMAS V. ALLIS.

Witnesses SAMUEL LEA, S. NELsoN WHITE.

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