US769603A - Manufacture of iron or steel wire. - Google Patents

Description

PATENTED SEPT. 6, 1904.

F. FORSBERG. MANUFACTURE 0F IRON 0R STEEL WIRE.

APPLICATION FILED MAB. 25. 1903.

3 SHEETS-SHEET 2.

NO MODEL.

/N VEA/TOF? ATTORNEY atented September V6, 1904 UNTTED STATES ATENT OFFICE.

FREDRIK FORSBERG, OF SANDVlKlCN, SWEDEN.

IVIANUFACTURE OF IRON OR STEEL WIRE.

" SPECIFICATION formingpart of Letters Patent No. 769,603, dated September 6, 1904.

Serial No. 149,443. (No modell) To /LZZ wil/m11, H lim/ 1j reo/1.067071.:

Be it known that I, FREDRIK Fonsnne, a subject of the King of Sweden and Norway, residing' at Sandviken, in the Kingdom of Sweden, have invented certain new and useful improvements in the Art of Manufacturing' Iron or Steel Vire, of which the following is a specification.

This invention relates to the art of rolling' and drawing' '1r-0n orrsteel rods in order to reduce them to the form of wire having' any desired contour in cross-section.

Heretofore, so far as known to me. iron or Steel wire has been made either by drawing' cold the rods primarily rolled for the purpose or by drawing such rods cold down to a dimension found suitable by experiment and then by subjecting' same to repeated hot and cold rolling' to bring' them down to the dimensions desired or b y rolling while hot in a single pair of rolls the previously cold-drawn wire, thus bringing it down to the dimensions required.

rl`he present invention has for its object to reduce the ordinary rods to the sectional dimensions required while hot, cold-drawing' being wholly eliminated; and the invention consists, essentially, in submitting' a heated rod of the metal-viren or steel-simultaneously to roll-drawing and rolling operations, as will be hereinafter explained.

ln order that the procedure may be the better understood, the apparatus preferably employed for effecting' it is illustrated in the accompanying' drawings, wherein-m Figure l is a longitudinal vertical section of the apparatus somewhat diagrammatically represented on a relatively small scale. Figs. Q., 3, and i are views illustrating' the rolls on a much larger scale. Fig'. 2 is a vertical section taken substantially at line .r2 in Fig. B. Fig'. 3 is a plan, and Fig. 4 isa vertical transverse section taken substantially at line .lf in Fig'.

Referring' primarily to Fig'. l, l designates a heating-bath, suitably a lead-bath, disposed over a furnace or furnaces The rod R to be operated on is fed forward from a reel 3 through the bath l to the rolling and drawing' rolls seen at thel right in Fig. 1, where it passes successively through pairs 5, 5, 5b, and 5 of horizontally-disposed and positively-driven rolls and through pairs 6, 6, and 6l of vertically-disposed non-driven rolls--that is to say, these pairs of vertically-disposed rolls, which alternate in position with the pairs of horizontal rolls, are rotated solely by the friction of the moving rod or wire thereon. The vertical rolls clamp frictionally on the heated rod or wire as it is carried along by the horizontal rolls, and the result is as follows: The rolls 5 draw the heated wire from the bath, the rolls 5 draw it through the vertically-disposed pair of rolls 6, disposed between the pairs of rolls and the rolls 5" draw the rod or wire through the vertically-disposed pair of rolls 6", and the pair of rolls 5 draw the rod or wire through the pair of verticallydisposed rolls 6". ln consequence of this alternation of positively-driven rolls and nOudriven rolls there is a straining' of the wire or rod between each pair of non-driven rolls and the pair of driven rolls next ahead, and as a result of this straining' of the rod or wire the reduction of the dimensions or size of the wire when passing' between the driven rolls will be considerably greater than if this straining' of the wire did not existwthat is to say, if the vertically-disposed rolls were positively driven and not rotated merely by the wire itself.

Referring to the detailed drawings, Figs. 2, 3, and e, it will suffice to say that the horizontal rolls are driven from a shaft 7 through gear wheels S, the rolls being' of course speeded gradually higher toward the end of the series by reason of the gradual elongation of the rod or wire. The vertically-disposed pairs of rolls are mounted, each roll of the pair, in a sliding' block 9, and these blocks are adjusted and set up so that the rolls clamp on the rod by suitable screws .l0 and 11, as seen in Fig'. 3.

lY am aware that a method similar to that above described has been employed in the art of manufacturingbrassand copper wires from in the usual manner by straightening-r011s 4e l metal in a cold static, and therefore I do not I rolling' and roll-drawing operations simultamanufacture of wires from heated rods of neously applied at dilferent parts of the rod. iron and steel. In this art my method is an l In Witness whereof I have hereunto signed essential improvement. my name in the presence of two subscribing l l claim this. My invention is restricted to the i 5 Having thus described my invention, I Witnesses.

claimh The herein-described improvement in the FREDRIK FORSBERG' art of forming Wire from a rod of iron or steel, which consists 1n rst heating said rod, and

Vitnesses:

ERNST SvANQvIsT,

IO then, while it is hot, subjecting it to alternate l AUG. SORENSEN.

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