Improvements in and relating to Electric Accumulator Plates.
Year: 1897

page_text: Date of Application, 15th Nov., 1897-Accepted, 15th Jan., 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Electric Accumulator Plates.
I, PAUL FERDINAND RIBBE, of 35 Krausenstrasse, Berlin, in the German Empire,
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:-
The present invention relates to an electrode plate for electric accumulators, in
which supporting plates of celluloid are connected together by means of celluloid
solution after the insertion between them of a flat lead plate. The celluloid plates
are so moulded or stamped, that they are connected together by means of the
celluloid solution at suitable points to form one single whole through apertures
in the lead plate.
The active mass is placed in these new plates between each two long bars of
celluloid of dovetail section, so that there are formed longitudinal cavities upon
both sides of the lead plates, between the celluloid bars, which cavities possess on
each side an undercut piece for the reception of the active mass.
The lead plates are provided with thickened rims and the thickness is so pro-
portioned that they correspond to the thickness of the longitudinal bars.
Apart from the apertures in the lead plates, the outer surfaces of the longi-
tudinal bars are arranged to be in the same plane with the rim of the lead plate,
in which plane thin perforated, celluloid plates are arranged, which are also bent
at the apertures of the lead plate and are secured by means of celluloid solution
at the fixing places of the longitudinal bars.
A plate of this construction is illustrated in the accompanying drawings in
which;
Figure 1 shews a view of the plate.
Figure 2 a section on the lines of Fig. 1.
Figure 3 a section on the lines y y of Fig. 1.
Figure 4 shews a part of the plate in section on an enlarged scale.
Figure 5 is a section on the line of Fig. 4.
Figure 6 is a section on the line uu of Fig. 4.
The lead plated possesses the apertures i and is provided with aʼrim surround-
ing it which in the case of a plate of one mm. thickness will be about 3 mm.
thick. Upon the said plate are arranged at the places of each aperture i two
celluloid bars g h one on each side, and these are bent in the manner illustrated
in Figs. 2, 3, 4, and 5, so that they are in contact with one another through the
ead plate. At the places of contact the celluloid bars g are connected together
by celluloid solution so that they form a single whole through the lead plate.
The celluloid bars have a thickness of about one mm. and are undercut, so that
he active mass inserted between the celluloid bars finds a hold, and the said
elluloid bars lie in the same plane as the rim of the plate.
After the insertion of the active mass 'k which in the course of setting presses
till firmer against its supports on each side, there is applied upon each side a
hin celluloid plate g¹ or h¹, which plate is provided with many apertures, in order
o admit free access of the electrolytic fluid to the active mass. These plates g¹ h¹

page_text: are secured by being bent over at the apertures in the lead plate and secured there
g ½ together
by means of celluloid solution, so that consquently the celluloid bars
with the celluloid plates g¹ h¹ form a single whole through the lead plate.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what I
claim is :-
The improved electrode plate for electric accumulators consisting essentially of a
lead plated provided with apertures and having celluloid bars gh with under-cut
edges to form the hold for the active mass, the said celluloid bars being covered
with perforated plates which plates are also bent at the apertures of the lead
plate and are so cemented to the celluloid bars, that a single whole is formed, con-
nected firmly together through the lead plate substantially as described.
W. P. THOMPSON & Co.,
322, High Holborn, London, W:C.,
Patent Agents for the Applicant.