Improvements in the Manufacture of Wire.
Year: 1893

page_text: Date of Application, 18th July, 1893
Complete Specification Left, 18th Apr., 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Wire.
I, RICHARD DAVID SANDERS of Hartfield House, Eastbourne, in the County
of Sussex, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in the manufacture of wire and the like
by electro-deposition upon a mandrel somewhat similar to those described in the
Specifications of former Letters Patent granted to me Nos. 7960 of 1891 and
12,382 of 1892.
According to my present invention I cut or form a thread or groove upon a
mandrel which may be circular or of any other suitable form in cross section
and through the body of the said mandrel I place conductors which communicate
with the threads or grooves by means of pins.
I polish the mandrel with any suitable polish or prepare it so as to make it proof
against the action of the solution in the depositing vats or I make the mandrel of
glass or other acid resisting material.
When the mandrel has thus been prepared I wind a fine wire around it in such
a manner as to come in contact with the pins communicating with the internal
conductors.
The whole is then placed in the depositing vat and when a sufficient amount of
metal has been deposited it is removed together with the wire upon which the
deposit originally commenced and from which it can be removed by fusion or
otherwise, and drawn into commercial wire in the ordinary manner.
The wire thus made may if required, be subjected to a burnishing process
during deposition by the means described in the Specifications of the said former
Patents.
101 1
T 1
1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Wire.
I, RICHARD DAVID SANDERS, of Hartfield House, Eastbourne, in the County
of Sussex, 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 :-
My invention relates to improvements in the manufacture of wire and the like
by electro-deposition upon a mandrel somewhat similar to those described in the
Specifications of former Letters Patent granted to me Nos. 7960 of 1891 and
12,382 of 1892.
According to my present invention I cut or form a thread or groove upon a
mandrel which may be circular or of any other suitable form in cross section and
through the body of the said mandrel I place conductors which communicate with
the threads or grooves by means of pins.
I polish the mandrel with any suitable polish or prepare it so as to make it
proof against the action of the solution in the depositing vats, or I make the
mandrel of glass or other acid resisting material.

page_text: When the mandrel has thus been prepared I wind a fine wire around it in such a
manner as to come in contact with the pins communicating with the internal
conductors.
The whole is then placed in the depositing vat and when a sufficient amount of
metal has been deposited it is removed, together with the wire upon which the
deposit has been made and from which it can be removed by fusion or otherwise,
and drawn into commercial wire in the ordinary manner.
The wire thus made may, if required, be subjected to a burnishing process during
deposition by the means described in the Specifications of the said former Patents.
In order to enable my invention to be fully understood I will describe the same
by reference to the accompanying drawing, in which :-
Figure 1 is a sectional elevation of a portion of my improved mandrel for
the manufacture of wire according to my invention, the conductor being passed
through the mandrel.
Figure 2 is a transverse section of the same:
Figure 3 is a sectional elevation of a modification of my invention in which the
conductor is placed outside the mandrel which is shewn as being suspended in the
tank containing the depositing solution.
Figure 4 is a section on the line 4-4 Figure 3.
Similar letters in all the figures represent similar or corresponding parts.
a represents my mandrel made of suitable material such as porcelain or glass.
b, b represent the spiral groove formed on the mandrel. c represents the fine wire
inserted or lying in the bottom of the groove b, such wire forming the metallic
surface on which the metal is deposited and on the side of which it accumulates
to the desired thickness; d represents the conductor communicating with the
wire lying in the bottom of the groove and passing through the body of the mandrel
as shewn in Figures 1 and 2.
In practice I have found some difficulty in introducing the rod d into the
porcelain mandrel and in making the required connections satisfactorily I have
found it better to keep the rod d outside the mandrel as shewn in Figures 3
and 4 and to make the connection externally.
In both modifications e, e represent the pins or wires for forming the con-
nection between the fine wire cand the conductor d; these pins in Figures 1
and 2 pass from the underside of the wire c and through holes in the conductor d,
while in Figures 3 and 4 the free ends of the wires rest on the outer surface
of the wire c, the other ends being connected to the conductor d which is mounted
in suitable bearings fon the tank g.
In making use of a mandrel where the conductor passes through it, the
mandrel is suitably suspended and revolved in the vessel or tank g containing
the depositing solution and the conductor d being connected to one terminal
of a dynamo, or other suitable source of electricity and the anode to the other
terminal the metal will be deposited upon the wire c and accumulate upon one
side thereof until sufficient metal has been deposited to fill the groove, when
the original wire c and the metal deposited upon it can be removed and the
deposited metal separated from the wire c in any convenient manner ready to
be drawn or otherwise suitably treated according to the purpose for which it is
required. Or where the original wire is made of a metal to which the deposited
metal will not adhere, such for example as lead, the deposited metal can be
removed without disturbing the original wire.
This
Where the conductor is placed outside the mandrel as shewn in Figures 3 and 4
I suspend the mandrel on a revolving spindle and in order to prevent the pins e
being deposited upon, I suspend the mandrel at such a height that a portion of
its surface is above the level of the liquid in the depositing vessel g.
method of suspending the mandrel in the tank may also be used when the
conductor and pins are placed in the body of the mandrel as shewn in Figures 1
and 2.
h represents the revolving spindle driven in any suitable manner from the

page_text: pulley and which spindle is advantageously placed as shown in the drawing
above the level of the liquid in the vessel g. By this arrangement, as the
spindle his revolved, the mandrel a will be slowly revclved by friction there-
with in the liquid in the vessel g, the metal being deposited upon the wire c and
accumulating upon one side thereof as previously described, the electric connection
being maintained by the pins e.
In the drawing I have not shewn the connection with the dynamo as this will be
understood without further explanation.
After the wire has thus been formed by accumulation of the deposit upon
one side of the original wire and has been separated therefrom it can be
drawn into commercial wire in the ordinary manner.
I am aware that it has been before proposed to thicken fine wires by electro-
deposition, but in all cases the original or mother wire has remained enclosed
in the deposited metal from which it could not be removed and I make no
claim to such a mode of manufacturing wire, but what I do claim is :—
1. The manufacture of wire by electro-deposition upon a wire so placed and
connected that the deposit will accumulate on one side of such wire so that the
deposited metal can be removed or separated therefrom substantially as herein-
before described.
2. The manufacture of wire by electro-deposition upon a wire inserted in or
lying in the bottom of a spiral groove formed around a suitable mandrel so that
the deposit may accumulate upon one side of the wire and be subsequently
separated therefrom and drawn in the ordinary manner, substantially as herein-
before described.
3. A mandrel for the manufacture of wire by electro-deposition constructed
of insulating material having a spiral or other suitable groove formed thereon
and a fine wire inserted in or lying in the bottom of the said groove and
suitably connected to an electric conductor and so arranged that the deposit
will accumulate upon one side of the wire and may be afterwards removed and
separated from the wire, substantially as herein before described.
ليود
1
A 1004
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.