An Improved Carbon Element for Galvanic Batteries.
Year: 1885

page_text: An Improved Carbon Element for Galvanic Batteries.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "AN IMPROVED
CARBON ELEMENT FOR GALVANIC BATTERIES a communication to me from abroad.
by Charles Rhodes Goodwin of 35 Boulevard des Capucines Paris, France;
Manufacturer, to be as follows:-
"
This invention relates to the carbon element of galvanic batteries and consists in
the combination with the carbon plate or element of a metallic terminal embedded
in the carbon in such way as to ensure a more simple, efficient and durable
contact for.the conducting wire than is afforded by the clips or holders fixed to the
carbon by external contact therewith or with a lead cap. piece on the, carbon, as
heretofore generally used.
This invention consists in embedding a screw threaded metal rod in the carbon
composition at the time of moulding and before burning the element a part of the.
screw rod remaining projecting from the element and receiving a binding nut or
equivalent means of making contact with the conducting wire or wires.
Reference is to be had to the accompanying drawings forming part of this
specification which represent an example of this invention. Figure 1 is a face view,
of the carbon Figure 2 an edge view partly in section. Figure 3 shows a face
view of a carbon of slightly different form and figure 4 an edge view of the same,
partly in section. The same letters of reference indicate the same parts in all the
figures.
C:
a is the carbon element 6 the screw, threaded rod. and the nut for binding, the
end of the conductor against a washer d. The form of the carbon may be varied
as also the parts b, c, d without departing from the invention which resides in the
mode of fixing the rod b.in the carbon by embedding it in plastic mass of carbon
at the time of moulding. The element is then fired and only requires the binding
nut to complete it. It will be seen that with this mode of manufacture the
contact between the screw rod and the carbon is as intimate as possible.. This rod
Pris 11

page_text: may be fixed directly to the carbon or if it is too thin, to a thickened cross piece e
at the upper end (figures 1 and 2) with or without a projecting socket piece g or
simply in a projecting socket piece as in figures 3 and 4. The parts b c d may be
made of any metal but preferably brass.
The embedded portion of rod b may be coated or surrounded with any material
calculated to preserve or improve the contact for example with a sheath of lead.
COMPLETE SPECIFICATION.
An Improved Carbon Element for Galvanic Batteries.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane; in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of this Invention (a communication to me
from abroad by Charles Rhodes Goodwin, of 35 Boulevard des Capucines, Paris, 1
France, Manufacturer), and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This Invention relates to the carbon element of galvanic batteries and consists
in the combination with the carbon plate or element of a metallic terminal
embedded in the carbon in such way as to ensure a more simple, efficient and
durable contact for the conducting wire than is afforded by the clips or holders
fixed to the carbon by external contact therewith or with a lead cap piece on the
carbon, as heretofore generally used.
This Invention consists in partly embedding a screw threaded metal rod in the
plastic mass of carbon at the time of moulding and before baking it, a part of the
screw rod remaining projecting from the element and receiving a binding nut or
equivalent means of making contact with the conducting wire or wires.
Reference is to be had to the accompanying drawings forming part of this
specification which represent an example of this invention.
Figure 1 is a face view of the carbon.
Figure 2 an edge view partly in section.
Figure 3 shows a face view of a carbon of slightly different form and Figure 4 an
edge view of the same partly in section.
The same letters of reference indicate the same parts in all the figures.
a is the carbon element, b the screw threaded rod, and c the nut for binding the
end of the conductor against a washer d.
The form of the carbon may be varied as also the parts b, c, d without departing
from the invention which resides in the mode of fixing the rod b in the carbon by

page_text: imbedding it in the plastic mass of carbon at the time of moulding. The carbon is
then baked and only requires the binding nut to complete it. It will be seen that
with this mode of manufacture the contact between the screw rod and the carbon
is as intimate as possible. This rod may be fixed directly to the carbon or if it is
too thin, to a thickened cross piece e at the upper end (Figures 1 & 2) with or
without a projecting socket piece g, or simply in a projecting socket-piece as in
figures 3 and 4. The parts b, c, d may be made of any metal, but preferably brass.
The embedded portion of rod b may be coated or surrounded with any material
calculated to preserve or improve the contact, for example-with a sheath of lead.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1st The method of establishing contact with a carbon element of a galvanic
battery which consists in partly embedding in the plastic carbon mass at the time
of moulding and before baking it, a metal piece of suitable form (preferably of
brass) the non-embedded portion of which metallic piece receives the devices for
fixing or nipping the conducting wire substantially as specified.
2nd The combination with the carbon element of a galvanic battery of a screw-
threaded rod, which is partly embedded in the plastic carbon mass at the time of
moulding, and before baking it, of a nut screwing on the non-embedded' portion of
the rod, and of a washer between which and the binding nut, the conducting wire
is held or nipped, substantially as described and shewn in the drawings, and for
the purpose specified.