US 300741 A
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Description (OCR text may contain errors)
- J. SPRUCE.
APPARATUS FOR MANUFACTURI-NG IMITATION TWISTED WIRE. No. 300,741.
Patented'June 17, 1884.
u. warns. Plmloulhogrnpher. Washington. a. c.
JAMES SPRUCE, OF WATERBURY,
CONNECTICUT, ASSIGNOR TO THE SCOVILL MANUFACTURING COMPANY, OF SAME PLACE.
APPARATUS FOR MANUFACTURING lMlTATlON TWISTED WlRE.
SPECIFICATION forming part of Letters Patent No. 300,741, dated June 17, 1884.
Application filed December 17, 1883.
To all whom, it may concern/.-
Be it known that I, JAMES SPRUCE, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new Improvement in- Apparatus for the Manufacture of Imitation Twisted Wire; and I do herebysuch wire; Fig. 3, ahorizontal sectional view of the apparatus for-drawing and twisting; Fig. A, a side view of the wire, showing a portion of 1t as it passes through the die untwisted, and
the other portion as twisted between the die and the wire-blockFigs. 1, 2, and 4 enlarged for convenience of illustration.
This invention relates to an improvement in the manufacture of wire which has the appearance of several round wires twisted together.
The class of wire to which this invention particularly relates is largely employed in the manufacture of various articles both useful and ornamental-such as table-service, picture-frames, card-holders, &c. In the usual construction of the wire several strands of round wire of uniform diameter are twisted together, which gives a twisted cord-like appearance. In the use of such twisted wire in the production. of articles such as before mentioned, great care must be exercised in bending into the various shapes required, in order to avoidthe separation of the convolutions, and to retain the even twist throughout, and unless the twist be avery close one such opening of the convolutions cannot be avoided.
The object of my invention is to produce a solid wire having the appearance of several round wires twisted together; and the invention consists in drawing a single wire through a die, the outline of the opening corresponding to two or more small round wires united, and so that the wire drawn therethrough will partake of the shape of the die, and present 50 the appearance of several small round wires (No model.)
united, and imparting to this wire a twist by the rotation of the die, whereby the wire after such twist has the appearance of several smaller round wires twisted together, as more fully hereinafter described.
I have illustrated my invention as a wire drawn in trefoil shape'that is, represent three round wires united, and which produces a trefoil shape in transverse section, as seen in Fig. 1. I construct a die, a, Fig. 2, having an aperture through it in shape corresponding to a transverse section through the com bined several round wires to be represented. Instead of arranging the die in a stationary position on the draw-bench, I arrange it in the hub of a gear-wheel, b, as seen in Fig. 3. To this gear-wheel rotary motionis imparted from a driving shaft, 0, by power applied thereto through a pulley, d, or other-wise. This may be arranged in the usual position for dies on a draw-bench.
Arepresents the usual wire-block,by the rev olution of which the wire is drawn through the die. The rod is introduced through the die a,
and then connected to the wire-block A in the 75 usual manner. The wire-block is then caused to revolve, and at the same time the die a revolves; but the plane of revolution of the die is parallel with the plane of the axis of the wireblock-that is, the plane of the die is at right angles to the plane of the wire-block. This revolution of the die will twist the wire as it 'is drawn through the die, the twist being produced between the bearing of the wire on the wire-block and the delivery-face of the die, and that twist will be closer or looser accordingly as the die revolves with a greater or less velocity-that is, the greater the velocity the I closer will be the twist. If the wire be drawn from a reel through the die, then that reel 90 must have a revolution to substantially correspond with the revolution of the die a, to prevent twisting the wire in rear of the die; but if it be drawn from rods the die itself will revolve the rod in rear of it, to prevent such twisting. WVire thus drawn will have the appearance, as seen in Fig. 4, of three round wires or strands twisted together, but will be practically one single wire.
This illustration of my invention as applied :00
to drawing and twisting wire of trefoil shape in transverse section-that is, so as to represent three round wires united-will be sufficient to enable those skilled in the art to adapt the invention to making wire having the representation of any desirable number of such round wires.
I make no claim herein to the wire produced by this method and apparatus, as such article constitutes the subject of an independent application filed in even date herewith.
I claim-- In an apparatus for the manufacture of wire in imitation of several round wires twisted toscribed,
JAMES SPRUCE. Witnesses:
'I. R. HYDE, Jr., G. M. DE Mom. 1