Improvements in Frames for Holding Finely Divided Mass, such as the Active Material of Electric Accumulators.
Year: 1896

page_text: Date of Application, 27th Nov., 1896-Accepted, 27th Nov., 1897
Improvements in Frames for Holding Finely Divided Mass, such as
the Active Material of Electric Accumulators.
I, WILHELM HOLZAPFEL, Manufacturer, of 33A Köpnickerstrasse, Berlin, in the
German Empire, 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 primarily to the plates of electric eccumulators, but is
applicable also in other cases where a frame is required to securely hold and support
finely divided mass, so that the latter is not liable to crumble off.
In the accompanying drawing Figs. I, II, III and IV represent parts of frames
embodying my invention, in sectional elevation.
Fig. I is a transverse section along line a-b of Fig. I, Figs. IB and I respectively
are cross sections along lines c-d and ef of Fig I.
Fig. II is a section along line f-g of Fig. II, Figs. II and II° are sections along
lines i-k and l-m of Fig. II.
Figs. III and IIIB are sections along line n-o and line p-q of Fig. III. Figs. III
and III are sections along lines r-s and t-u of Fig. 1II.
Fig. IVA is a section along line v-w of Fig. IV. Fig.|IVB is a section along line x-z
of Fig. IV.
Figs. V and VI show modifications.
Such an accumulator plate chiefly consists of a frame A (Figs. I and II) having
several parallel rods or cross bars a, a each of which forms a series of dove-
tails or bends by alternately extending to the front and to the back of the frame. In
Fig. 1 the bends or depressions of consecutive bars are placed out of line with each
other, while in Fig. II. they are in line. In Fig. III one set of bars is horizontal and
the other set vertical, thus forming right angles with each other, and connecting wires
or thin tie rods c, c extend across the interstices.
In Fig. IV the cross bars a are arranged similarly to those in Fig. II, except that
the open panels or recesses are bridged over with small safety bars b, b, running at
right angles to the bars a, a.
The recesses or panels formed in these frames are filled up with finely divided
active material or plastic mass, which forms a coherent body traversed at various
places with bars or ties, the shape and arrangement of which is adapted to pre-
vent the mass from accidentally dropping out or crumbling to pieces.
If required, two or more of these frames may be joined together, so as to form
a plate of larger dimensions or greater capacity.
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:
1. A supporting frame for finely divided mass such as the active material of
accumulator-plates, consisting of a main frame A and dovetailed or sinuous cross bars a
arranged across the said main frame either parallel or at right angles to each other
and connecting the sides of the same, the recesses of consecutive cross-bars being

page_text: either in line or out of line with each other, and the whole constituting a skeleton in
which the tinely divided mass may form a coherent body, substantially as described.
2. In a supporting frame as specified above, a series of parallel safety bars b, b,
extending across the recesses formed by the bars a, a, substantially as described with
reference to Fig. IV.
3. In a supporting frame as specified in Claim 1, a series of connecting wires or
rods c, c, substantially as described and illustrated by Figs. IIIA, III and III°.
Dated this 25th day of November 1896.
FAIRFAX & WETTER,
433, Strand, London, Agents.