Improved Jar or Cell for Galvanic Batteries.
Year: 1891

page_text: Date of Application, 18th Dec., 1891
Complete Specification Left, 14th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improved Jar or Cell for Galvanic Batteries.
A communication by OTTO HIRSCH, of Weisswasser on the Laus, in the Empire
of Germany, Manufacturer.
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, and 323 High Holborn, in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as follows:-
In battery jars or cells hitherto employed for galvanic elements, special devices
have always been necessary for securely insulating the two electrodes from one
another.
For this purpose peculiar porcelain pieces were mostly employed which were
inserted between the two electrodes such as for instance between zinc and carbon,
and they were then firmly retained by india-rubber bands. But in this case the
drawback became apparent that the above named india-rubber strips rolled away,
with the immediate consequence that there was danger of contact between the two
electrodes.
The evil was further apparent that certain crystals, deposited from the electro-
lytic fluid or liquid, were deposited on the porcelain pieces and thus produced an
interruption in the working.
Various attempts in order to remove these drawbacks have been made to produce
the insulation by forming on the square battery jar or cell a peculiar projection of
an almost circular form which is connected with the remaining space merely by a
narrow opening.
Such battery jars or cells are however both inconvenient and costly in the
manufacture and for this reason they have not been much employed in practice.
Now this invention relates to a battery jar or cell having none of the above
named drawbacks.
The battery jar or cell consists of glass, is square in form, and has at its upper
edge the usual form of a glass battery. In the corner destined for receiving the
zinc plate, impressions or projections are formed at the time of blowing of the glass
in the mould, which may be accomplished in various ways.
It is only necessary for the production of these projections that the battery
glass shall be in a somewhat clastic fluid condition. The projections or impressions
are applied on the sides at a suitable distance from the corner, so that the zinc bar
may have space for free play in the space enclosed by these projections.
The carbon cylinder is then introduced into the battery jar or cell in the usual
manner and it will be seen without any further explanation that any contact of the
two electrodes is entirely prevented.
In this case however the manufacture of these glass jars or cells only costs a
small amount, so that the improved jar or cell doubtless possesses a higher practical
superiority above all cells hitherto known.
Dated this 17th day of December 1891.
WM. P. THOMPSON & Co.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improved Jar or Cell for Galvanic Batteries.
A communication by OTTO HIRSCH, of Weisswasser on the Laus, in the Empire
of Germany, Manufacturer.
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 and 323 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 :-
In battery jars or cells hitherto employed for galvanic elements, special devices
have always been necessary for securely insulating the two clectrodes from one
another.
For this purpose special porcelain pieces were usually employed which were
inserted between the two electrodes, such as for instance between zinc and carbon,
and they were then firmly retained by india-rubber bands. But in this case the
drawback became apparent as the above named india-rubber bands rotted away,
and consequently there was the immediate danger of contact between the two
electrodes.
The evil was further apparent as certain crystals were deposited from the
electrolytic fluid or liquid on the porcelain pieces and thus produced an interruption
in the working.
Various attempts, in order to remove these drawbacks, have been made to
produce the insulation by forming on the square battery jar or cell a peculiar pro-
jection of an almost circular form which is connected with the remaining space
merely by a narrow opening.
Such battery jars or cells are however both inconvenient and costly in the
manufacture and for this reason they have not been much employed in practice.
Now this invention relates to a battery jar or cell having none of the above
named drawbacks which is shown on the accompanying drawing, in which
Figure 1 shows an elevation of a zinc and carbon battery,
Figure 2 a plan, and
Figure 3 a section.
The battery jar or cell A consisting of glass, is square in form, and has at its
upper edge the usual form of a glass battery. In the corner destined for receiving
the zinc plate, impressions or projections a are formed at the time of blowing of
the glass in the mould, which may be accomplished in various ways.
It is only necessary for the production of these projections that the battery glass
shall be in a somewhat elastic fluid condition. The projections or impressions a
are applied on the sides at a suitable distance from the corner, so that the zinc bar
may have space for free play in the space enclosed by these projections.
The carbon cylinder B is then introduced into the battery jar or cell in the
usual manner and it will be seen without any further explanation that any contact
of the two electrodes is entirely prevented.
In this case however the manufacture of these glass jars or cells only costs a
small amount, so that the improved jar or cell doubtless possesses a higher practical
.superiority above all cells hitherto known.
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 correspondent, I declare that what I claim is-
The improved jar or cell for galvanic batteries having an insulating device for
the electrodes formed by impressions or projectious a which are made at the time

page_text: of blowing the glass jar or cell in the mould and which project towards the inside
of the cell, thus closing in a space for one of the electrodes and also entirely
preventing any contact of it with the other electrode substantially as described.
Dated this 13th day of September 1892.
WM. P. THOMPSON & Co.,
Agents for the Applicant.