US276439A - Barbed-wire fence - Google Patents

Description

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(LA. MANN.

BARBED WIRE FENCE. No. 276.439. Y Patented .xph-24,1883.

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UNITED STATES t CHARLES A. MANN, .OF

PATENT "OFFICE,

BUFFALO, New YORK.

BMBED-wlRl-z FENCE.

SPECIFICATION forming` part of Letters :Patent No.` 276,439, dated April 24, 1883.

Application filed January 10, 1883. `No model.)

.To all whom it may concern: l

Be it known that I, CHARLES A. MANN, 'a citizen of the United States, residing at Buffalo, in the county of Erie and State ot' New York, have invented certain new and useful Improvements in Barbed-Wire Felices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to that class of barbed fence-Wire which is made from a flat metal strip.; anditconsists substantially in cutting the barbs from a continuons portion turned up from one edge ot' the dat strip, and bending them in opposite directions in the plane of the strip proper.

Another feature of my invention consists in so forming the strip, after the barbs have been cut and bent, that there will be two lines of barbs lying substantially in parallel planes.

My invention further consists of other details of construction, which will be more fully hereinafter described and claimed.

In the drawings, Figure 1 is a perspective view ofthe metallic strip, illustrating the manner of cutting the barbs. Fig. 2 is a similar view illustrating the manner of bending the barbs. Fig. 3 is an end view of Fig. 2. Fig. 4 is a perspective view illustrating another step in the invention. Fig. 5 is anend view of Fig. 4, and Fig. 6 is a view of a fence emg bodying my invention.

Referring to the drawings, in Fig. l, a is the strip proper, and a is the turned-up portion integral with the strip a. This angular strip is preferablyof steel, and is formed between rollsin the usual manner. The turnedup portion a is located at one edge of the strip proper, a, as shown in the drawings. Having formed the strip in this manner, I next cut the turned-up portion a at the lines b b and c c,

(see Fig. 1,) forming the pointed barbs d and e. I neXt bend these pointed barbs d ande in opposite directions on the dotted lines d' and e', (see Fig. 1,) so that they are at substantially right angles to the strip proper, as clearly shown in Fig. 2, the barbs e extending across and beyond the strip proper. After the strip is formed, as shown in Fig. 2, I preferably galvanize it, in which event the barbs c, which lie against the surface of the strip proper, are securely united thereto by the zinc `or other material employed in the galvanizing process, and thereby serve to materially strengthen such strip, for the reason that the portions of the barbs e lying against and secured to the strip proper form transverse strengthening-ribs e', and additionally prevent the barbs e from being bent out of position. The partsfot' the turned-up portion a', which are not disturbed in the cutting and bending ofthe barbs, serve as strengthening-pieces for the strip proper.

It will thus be seen from the foregoing def important functions. The barbed strip is attached by means of staples to pos-ts to form the fence, as shown in Fig. 6, with the barbs standing vertically in opposite directions. The strips are not twisted in forming the fence, which has the effect of rendering it comparatively harmless, except in the event of the animals attempting to force itself through.

In order to prevent animals from rubbing against the fence in such a manner as to injure it by breaking the strips, I have provided it with a series of transverse bends or curves, g, so located, as clearly shown in Fig. 4, as to throw a number of pairs of the barbs out ot' 85 line with the strip proper, thus forming two lines of barbs lying in substantially parallel planes, as shown in Fig. 5. ,Thebarbs in the bends g have the eect ot' preventing the animals from rubbing against and breaking the strip, without at the same time causing them serious injury, as is the case in fences where the strips or wires are twisted in such a manner that the barbs point in all directions.

I claim- 1. In a wire fence, a flat metal strip having a continuous portion or flange turned up from one edge of the tlatstrip, from which aseries of barbs are cut and bent in opposite directions in the plane of the strip proper, substantially as shown and described.

2. In a wire fence, a tlat metal strip having a'turned-up portion or flange integral therewith, and from which a series of barbs are cut and bent in opposite directions in the plane of the strip proper7 such strip proper being provided with a series ot' transverse bends or grooves so arranged as to form two lines of barbs lying in substantially parallel planes, substantially as shown and described.

3. In a Wire fence, the at metal strip a, having the longitudinal strengthening portions f, and the barbs d and. e, bent in opposite directions in the plane ofthe strip a, the portionsf and the barbs d and e being formed from the

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