Improvements in Electric Accumulators or Storage Batteries.
Year: 1896

page_text: Date of Application, 5th Oct., 1896
Complete Specification Left, 5th Apr., 1897-Accepted. 15th May, 1897
[Communicated from abroad by LA SOCIÉTÉ ANONYME "ACCUMULATEUR ECLAIR," of
68, Rue Neuve, Brussels, in the Kingdom of Belgium.]
Improvements in Electric Accumulators or Storage Batteries.
I, DAVID YOUNG, Patent Agent, of the Firm of D. Young & Co., of 11 and 12
Southampton Buildings, London, W.C., do hereby declare the nature of this invention
to be as follows:-
This invention relates to the construction of electric accumulators or storage
batteries and is characterized by the following features:-
1st. Instead of scraping the paste off the plates level with the grid as in the
ordinary accumulators, I scrape it off above the surface of the grid, that is to say I
enclose the grid in the active material after having surrounded the plate with a
protuberant frame. This frame may, if desired, may be formed in one piece with the
grid. This construction is especially applicable to the positive plate.
2nd. Instead of separating the plates, I place them one against another intercalating
between them a sheet of felt or analogous inaterial.
In the accompanying drawing
A represents the negative plate which may or may not have the paste extending
beyond the surface of the grid.
B represents the sheets of felt.
C the positive plate with the paste extending beyond the surface of the grid.
D the frame, and
E the receptacle.
The advantages offered by this novel construction are many and important :-
(a.) The scraping off of the paste above the surface of the grid gives a capacity
much superior to the simple scraping off flush with such surface.
(b.) The element forms a compact and very resistant mass.
(c.) The sheet of felt absorbing the exciting liquid permits the latter to circulate
freely and attack each molecule of the active material. This sheet of felt, by reason
of its elasticity, permits the expansion and contraction of the active material, and this
without the possibility of the falling of the active material during the rapid or forced
charging and discharging under the ordinary regime; it neutralizes completely the
effect of shocks or jars and of vibrations when the accumulators are utilized for
traction.
(e.) The felt employed effectually resists the action of the acid and therefore does
not require to be frequently renewed.
(.) The quantity of liquid employed is reduced to a minimum, the direct
consequence of which is a considerable diminution of weight.
(9.) The element thus constituted is of great strength and of small volume and
consequently very light proportionately to its capacity.
(h.) The intercalation of the sheet of felt does not in any way augment the internal
resistance, and has no bad effect upon the capacity, the gas being liberated easily.
In short, the present invention gives to the accumulator :-
(1.) A great elasticity and a great strength in its application to traction;

page_text: (2.) A greater capable for a smaller volume;
(3.) A greater lightness by dispensing with a considerable part of the liquid.
Dated this 5th day of October 1896
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.
Improvements in Electric Accumulators or Storage Batteries.
I, DAVID YOUNG, Patent Agent, of the Firm of D. Young & Co., of 11 and 12
Southampton Buildings, London, W.C., 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 the construction of electric accumulators or storage
batteries and is characterized by the following features:--
1st. Instead of scraping the paste off the plates level with the grid as in the
ordinary accumulators, I scrape it off above the surface of the grid, that is to say,
I enclose the grid in the active material after having surrounded the plate with a
protuberant frame. This frame if desired, may be formed in one piece with the grid.
This construction is especially applicable to the positive plate.
2nd. Instead of separating the plates, I place them one against another intercalating
between them a sheet of felt or analogous material.
Referring to the drawing accompanying my Provisional Specification,
A represents the negative plate which may or may not have the paste extending
beyond the surface of the grid.
B represents the sheets of felt,
C the positive plate with the paste extending beyond the surface of the grid,
D the frame, and
E the receptacle.
The advantages offered by this novel construction are many and important:-
(a.) The scraping off of the paste above the surface of the grid gives a capacity
much superior to the simple scraping off flush with such surface.
(b.) The element forms a compact and very resistant mass.
(c.) The sheet of felt absorbing the exciting. liquid permits the latter to circulate
freely and attack each molecule of the active material. This sheet of felt, by reason
of its elasticity, permits the expansion and contraction of the active material, and this
without the possibility of the falling of the active material during the rapid or forced
charging and discharging under the ordinary regime; it neutralizes completely the
effect of shocks or jars and of vibrations when the accumulators are utilized for
traction.
(e.) The felt employed effectually resists the action of the acid and therefore does
not require to be frequently renewed.
(.) The quantity of liquid employed is reduced to a minimum, the direct
consequence of which is a considerable diminution of weight.
(g.) The element thus constituted is of great strength and of small volume and
consequently very light proportionately to its capacity or output.
(h.) The intercalation of the sheet of felt does not in any way augment the internal
resistance, and has no bad effect upon the capacity or output of the cell, the gas being
liberated easily.
In short, the present invention gives to the accumulator:-
(1.) A great elasticity and a great strength in its application to traction;

page_text: (2.) A greater capacity or yield for a smaller volume; and
(3.) A greater lightness by dispensing with a considerable part of the liquid.
Having now particularly described and ascertained the nature of my 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 manufacture of an electric accumulator in which the active material or paste is
scraped off above the surface of the grids and the plates or electrodes so formed are
placed one against another with a sheet of felt or analogous material intercalated
between them, substantially as, and for the purposes hereinbefore described with
reference to the drawing.
Dated the 5th dose of oil 1907
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant...