Improvements in or relating to Electric Storage or Secondary Batteries.
Year: 1899

page_text: Date of Application, 5th May, 1899
Complete Specification Left, 31st Jan,, 1900-Accepted, 10th Mar., 1900
PROVISIONAL SPECIFICATION,
Improvements in or relating to Electric Storage or Secondary
Batteries.
We, JOB THOMAS NIBLETT and MALCOLM SUTITERLAND, Electrical Engineers,
of 61, Chandos Street, Strand, London, W.C., do hereby declare the nature of
this invention to be as follows:-
"
This invention relates to electric storage or secondary batteries of the "pasted"
type in which the active material, or material to be rendered active, is inter-
posed between the electrodes or conducting supports, and non-conducting porous
separators or supports, which latter are used for supporting the said active
material to prevent its undue disintigration and separating adjacent elements
of different polarity.
Hitherto, these batteries have generally been constructed by either "pasting"
the active material, or material to be rendered active, on to the electrodes and
allowing it to become cemented to the non-conducting supports during the
"forming" process, or, by "pasting" it on to the non-conducting supports and
allowing it to agglomerate with the electrodes during the "forming" process.
The batteries produced by the first of these processes have frequently lacked
the necessary mechanical solidity and compactness owing to the active material,
or material to be rendered active, becoming but imperfectly cemented to the
non-conducting supports, which readily occurs when the said supports are dis
torted, or have uneven surfaces, while the batteries produced by the second of
the said processes have frequently proved electrically inefficient owing to the
active material, or material to be rendered active, not properly agglomerating
with the electrodes, and therefore becoming more or less inert.
According to our invention we overcome these difficulties by "pasting" the
active material, or material to be rendered active, partly ca to the electrodes
and partly on to the non-conducting supports and afterwards causing the masses
of the said material on adjacent conducting and non-conducting supports to
unite, which may be effected by either pressing them together while one or
both of them is or are still in an unset or moist condition, or, after they have
set or hardened, cementing them together with a thin layer of the active
material, or allowing them to become agglomerated together during the "form-
ing" process, or in any other convenient manner.
By these means we are able to produce a battery element of a most rigid and
compact character, and in which all the component parts are in the most intimate
agglomeration with each other and not likely to become separated.
29
The surfaces of the electrodes and non-conducting supports on which the
active material, or material to be rendered active, is "pasted," may be flat, or
to provide better "anchorage for the said material. provided with pins or
spiral, zig-zag or other ribs or projections or roughenings, and the opposite or
outer sides of the non-conducting supports may be corrugated, grooved or ribbed
so as to allow for the free circulation of the electrolyte. Where two of these
non-conducting supports are adjacent to each other they are preferably arranged

page_text: so that the juxtaposed corrugations, grooves or ribs thereof cross each other at
right angles, or these said outer surfaces may be provided with studs or similar
projections instead of the above named corrugations or ribs..
34
Improvements in or relating to Electric Storage or Secondary.
Batteries.
We, JOB THOMAS NIBLETT and MALCOLM SUTHERLAND, of 61, Chandos Street,
Strand, London, W.C., Electrical Engineers, 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 electric storage or secondary batteries of the "pasted"
type in which the active material, or material to be rendered active, is inter-
posed between the electrodes or conducting supports, and non-conducting porous
separators or supports which latter are used for supporting the said active
material to present its undue disintegration and for separating adjacent elements
of different polarity.
Hitherto these batteries have generally been constructed by either "pasting"
the active material or material to be rendered active, on to the electrodes and
allowing it to become cemented to the conducting supports during the
forming process, or, by "pasting" it on to the non-conducting supports and
allowing it to agglomerate with the electrodes during the “forming" process.
"
The batteries produced by the first of these processes have frequently lacked
the necessary mechanical solidity and compactness owing to the active material,
"or material to be rendered active, becoming but imperfectly cemented to the
non-conducting supports, which readily occurs when the said supports are dis-
torted, or have uneven surfaces, while the batteries produced by the second of
the said processes have frequently proved electrically inefficient owing to the
active material, or material to be rendered. active, not properly agglomerating
with the electrodes, and therefore becoming more or less inert.
According to our invention we overcome these difficulties by "pasting" the
active material, or material to be rendered active, partly on to the electrodes
and partly on to the non-conducting supports and afterwards causing the masses
of the said material on adjacent conducting and non-conducting supports to
unite, which may be effected by either pressing them together while one or
both of them is or are still in an unset or moist condition, or, after they have
set or hardened, cementing them together with a thin layer of the active
material, or allowing them to become agglomerated together during the "form-
ing process, or in any other convenient manner.
By these means we are able to produce a battery element of a most rigid and
compact character, and in which all the component parts are in the most intimate
agglomeration with each other and not likely to become separated.
The surfaces of the electrodes and non-conducting supports on which the
active material, or material to be rendered active, is "pasted," may be flat or
to provide better "anchorage" for the said material provided with pins or
spiral, zig-zag or other ribs or projectious or roughenings and the opposite or
outer sides of the non-conducting supports may be corrugated, grooved or ribbed
so as to allow for the free circulation of the electrolyte. Where two of these

page_text: non-conducting supports are adjacent to each other they are preferably arranged
so that the juxtaposed corrugations; grooves or ribs thereof cross each other at
right angles, or these said outer surfaces may be provided with studs or similar
projections instead of the above named corrugations or ribs.
•
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
1. In the manufacture of electric storage or secondary batteries of the "pasted
type and in which the active material or material to be rendered active is
interposed between the electrodes or conducting supports and non-conducting
porous separators or supports, "pasting" the active material or material to be
rendered active partly on to the electrodes or conducting supports and partly
on to the non-conducting separators or supports and afterwards causing the
masses of the said material on adjacent conducting and non-conducting supports
to unite substantially as herein before described.
2. An electric storage or secondary battery or battery-element constructed
substantially as herein before described.
Dated this 30th day of January 1900.
J. T. NIBLETT,
MALCOLM SUTHERLAND.