US234936A - Thomas v - Google Patents

Description

(No Model.)

T. V. ALLIS. Blank for Barbed Metallic Pence Rods.-

No. 234,936. Patented Novf30, 1880.

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

BLANK FOR BARBED METALLIC FENCE RODS.

SPECIFICATION formingpart of Letters Patent No. 234,936, dated November 30, 1880.

Application filed June 17, 1880.

T0 all-whom it may concern:

Be it known that I, THOMAS V. ALLIS, of the city, county, and State of New York, have invented a new and useful Improvement in Blanks for Barbed Metallic Fence Rods, of which the following is a specification.

My invention consists of a blank rod specially designed for the manufacture of twisted barbed metallic fencing, having one row of barbs made. out of a tin of said rod, with narrow webs of said fin along the rod and connecting the bases of the barbs, said rod, also, having ana-rrow plain fin on the side opposite to said webs, between the barbs, of about the same width, for balancing them when the rod is twisted after the barbs are formed on it, to make it twist straightly, which said blank is composed of two cores or ribs connected bya thin web to form the barbs and their connecting-webs, and a narrow fin'to each core or rib opposite the said connecting-web, to make the aforesaid balancing fins for insuring straightncss in the rod when twisted after the barbs are formed.

The advantages of this form of blank are, first, the facility with which it can be rolled, in consequence of only requiring grooves in the rolls for the cores or rib portions, while the web and the fins may be made between the plain faces of the rolls; and, second, the fins come in the places where fins naturally make in rolling metal.

The web furnishes the barbs for both rods by so punching the surplus metal away that the barbs of one are made in the spaces between the barbs of the other red.

Figure 1 represents a plan view of my improved blank rod for barbed fencing. Fig. 2 isa transverse section of the blank. Fig. 3 is an elevation of the rolls for making the blank and a section of the latter, and Fig. 4 is a plan of a section of the blank, partly punched, as in the making the barbs and separating the rods one from the other.

a. represents the said ribs or cores; 1), the

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web connecting the same, to make the barbs d and the narrow webs 6, connecting the bases of the barbs, along the core, and 0 represents the outside narrow fins opposite to the web I) and the barbs d and webs 0, made from said web, for balancing said webs 0 when the barbed rod is finally twisted. If the web I) could be cut close to the side of the ribs a, so as not to leave the narrow webs c, this balancing-fin 0 would not be needed, as the rod would then twist straightly; but it cannot well be done when the web I) radial to the core, because the die on which the core lies to be punched has to be. grooved for the core, which makes an acute-angled edge to the die, which Wlll not last under the blows of the punches; consequently it has to be strengthened by wideningthe metal between the groove and the cutting-edge beyond the radius of the core from which the webs eresult, which webs, if unbalanced, would prevent the rod from twisting straightly, and therefore require the balancing effect of the fin c.

A represents the rolls for making this blank, which are plain, except a groove, B, for each of the ribs or cores a of the blank.

I am aware that blanks for making nails, combs, rakes, 850., consisting of two parallel ribs connected by a thin web, have been made; butlam not aware that such form of metal with theoutside narrow fins, 0, have ever before been employed as a blank for the manufacture ofany article.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

The improved blank rod herein described for barbed metallic fencin g, consisting of two ribs-or cores, (0, each having a narrow outside fin, c, and being connected by a thin web, 1), between them, substantially as specified.

THOMAS V. ALLIS.

Witnesses A. P. THAYER, H. S. BURT.

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