Improvements in Connections for Electrical Accumulators and other similar purposes.
Year: 1892

page_text: Date of Application, 23rd Sept., 1892
Complete Specification Left, 29th Dec., 1892-Accepted, 4th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Connections for Electrical Accumulators and other
similar purposes.
I JOHN JOSEPH ROBINS, of Selly Oak, near the City of Birmingham,
Electrical Engineer do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the connections employed for connecting
batteries one to another in which the acids employed in such batteries are liable to
attack the metallic connections used for such purposes.
At present it is found that while it is highly desirable to employ copper as a
means of connection because of its high conductivity, still it proves very incon-
venient by reason of the ready attack made upon such metal by the sulphuric or
other acid employed, such chemical action proving to be a great objection, inas-
much as not only does it attack and destroy the copper or other highly conductive
metal connection; but also during such attack an incrustation of sulphite is formed
upon the said connection and such incrustation is liable to fall off into the batteries
and greatly impairs the working of them. Further, on the other hand if lead be
used it certainly resists the acid action, but its conductivity is so low, as to render
it practically useless.
Now the object of this my invention is to embrace and take advantage of both
these qualities of these metals by combining the two together in such a manner, that
the lead which resists the acidulous action shall protect the highly conducting
metal copper &c., so that while I obtain the desirable quality of the latter, I also
have the protecting quality of the former.
To effect this: -I make the primary conductor of copper (or other high conduct-
ing inetal) either of a solid, tubular or stranded sectional shape, and then cover the
same with a more or less coating of lead. Such coating may be rolled, coiled, or
cast thereon as may be mest convenient but generally one of the two former.
This my improved connection may be employed wherever the acid, or gas or
fumes therefrom, would in the ordinary course attack the copper or other highly
conducting metal, and would as before stated, preserve such copper &c., from
decay.
Dated this 22nd day of September 1892.
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Connections for Electrical Accumulators and other
similar purposes.
I JOHN JOSEPH ROBINS, of Selly Oak, near the City of Birmingham, Electrical
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:-
This invention relates to improvements in the connections employed for connecting
batteries one to another, in which the acids employed in such batteries are liable to
attack the metallic connections used for such purposes.
At present it is found that while it is highly desirable to employ copper as a
means of connection because of its high conductivity, still it proves very incon-
venient by reason of the ready attack made upon such metal by the sulphuric or

page_text: other acid employed, such chemical action proving to be a great objection, inasmuch
as not only does it attack and destroy the copper or other highly conductive metal
connection; but also during such attack, an incrustation of sulphite is formed upon
the said connection, and such incrustation is liable to fall off into the batteries and
greatly impair their working. Further, on the other hand, if lead be used it cer-
tainly resists the acid action, but its conductivity is so low, as to render it practically
useless.
Now the object of this my invention is to embrace and take advantage of both
these qualities of these two metals by combining them together in such a manner,
that the lead which resists the acidulous action, shall protect the highly conducting
metal such as copper or other suitable metal &c., so that while I obtain the
desirable quality of the latter, I also have the protecting quality of the former.
To effect this:-I make the primary conductor of copper (or other high con-
ducting metal) either of a solid, tubular or stranded sectional shape, and then cover
the same with a more or less coating of lead. Such coating may be rolled,
coiled or cast thereon, as may be most convenient but generally one of the two
former.
This my improved connection may be employed wherever the acid, or gas or
fumes therefrom, would in the ordinary course attack the copper or other highly
conducting metal, and would as before stated, preserve such copper &c. from
decay.
In order to more clearly explain this my invention, I have appended hereunto
illustrative drawings upon which are figures and numbers of reference, similar
numbers referring throughout the several views to the same thing or part, and
in which :-
Fig. 1, shows my invention as applied between two batteries.
Fig. 2, shows a similar connection but modified in shape.
Fig. 3, shows the connection or conductor as made in a continuous cable or strand
shape.
Fig. 4, shows an enlarged detailed view of the connection shown in Fig. 2.
1 & 2, are the batteries, 3 and 4, are the dissimilar electrodes. These electrodes
are connected to each other by means of the connecting bar 5, which is of copper
or other highly conductive metal. This bar 5, is covered with the coating 6, which
is of lead.
In Fig. 1, the connection is made direct on to the electrodes, and then secured
together at 7, whilst in Figs. 2 and 4, it is made separate therefrom, and secured
thereto at 8 and 9.
In cases where a continuous conductor is required to be protected from similar
acidulous effects, contiguous to batteries &c. I employ a similar arrangement, as
shown in Fig. 3, where the copper wire 10, is similarly covered by the lead 11.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The combination in electrical accumulator and battery connections or conductors,
of an internal bar, coil, strand or strip of copper or other highly conductive
metal, with an outer case or covering of lead, in the manner and for the purposes
herein described and illustrated.
Dated this 28th day of December 1892.
CHARLES T. POWELL,
Applicant's Agent..