Year: 1897

page_text: Date of Application, 26th Feb., 1897-Accepted, 26th June, 1897
A communication by the Firm of C. SCHNIEWINDT, of Neuenrade, Westphalia, in
the Empire of Germany, Manufacturers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster, 118, New Street, Birmingham in the
County of Warwick and 322, High Holborn in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
Wire drawing machines for uninterruptedly drawing wire by the cold process
In machines of this kind
through a series of draw plates are in themselves known.
however a great drawback exists in the fact that the wire carried over drawing
rollers or discs comparatively soon cuts into the same and produces channels or
grooves, which then cause breakages of the wire. In order to obviate this cutting,
the draw eyes of the draw plates instead of being arranged in a straight line one
behind the other are by this invention arranged out of line with one another, and
in place of discs or rollers, for the wire to be carried over, cylinders are employed
round which the wire must wind in an opened spiral in consequence of the out of
line position of the draw-eyes. The cutting of the wire into the drawing cylinders
is thus rendered impossible because the friction surface of the cylinder equals the
breadth of the opened spiral.
In the accompanying drawings,
Figure 1 is a side view of a wire drawing bench and Figure 2 is a plan view,
whilst
Figures 3, 4 and 5 are details of the cylinders.
a is a fine wire drawing roller with bevel gearing a, b are the wire drawing
cylinders, c the stands of the draw plates, the eyes of which are in positions out of
line with one another. The cylinders 6 rotate in a tank or receptacle d partially
filled with a suitable liquid. e are the driving wheels for the cylinders b. Two or
more rows of drawing cylinders may be simultaneously driven by means of these
driving wheels, or only a single row; two rows are shown in the drawings.
If the cylinder has a somewhat eccentrically arranged nave, as shown in
Figure 3, or if the nave be bored somewhat wider than the diameter of the shaft
(see Figure 4), it will then when rotating have a movable periphery, and the wire
will have a certain extent of play and receive consequently a freer movement so
that instead of following regularly the same spiral line on the drawing cylinders as
would be the case with cylinders mounted on a central axis, the frictional line will
constantly change and the wire be prevented from cutting into the roller, and the
eye of the draw-plate will be freed from accumulated particles or impurities which
narrow the same and easily cause a breakage of the wire. The drawing cylinders
may also have a somewhat concave surface as shown in Figure 5.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. A wire drawing machine characterised by the eyes of the successive draw-
plates being arranged out of line with one another, whereby the wire is forced to

page_text: wind round the drawing cylinders in opened spirals, thus preventing the wire from
cutting into the periphery of the cylinders.
2. In a wire-drawing machine; drawing cylinders or rollers having movable
peripheries substantially as hereinbefore described with reference to Figures 3
and 4 of the accompanying drawings.
3. In a wire drawing machine; drawing cylinders or rollers having concave
peripheries substantially as herein before described with reference to Figure 5 of
the accompanying drawings.
1007
WM. P. THOMPSON & Co.,
Agents.