Improvements in the Form and Manufacture of Secondary Battery Frames and Plates.
Year: 1889

page_text: Date of Application, 13th Feb., 1889
Complete Specification Left, 13th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Form and Manufacture of Secondary Battery
Frames and Plates.
.
ARTHUR DOUGLASS 65 Canonbury Road London north Electrical Engineer
FREDERICK SMITH 110 Lancaster Road London west Gentleman do hereby declare
the nature of this invention to be as follows :-
:-
Relates to the manufacture and formation of Frames and Plates to act as conductors
and supports for holding and keeping in position the active material used in Secondary
Batteries or accumulators. The Frames consist of a lead casting the edges of which
are square on the outside and V, U or half round in the inside so that when the
active material is once placed, pressed or otherwise inserted it is impossible for it to
fall out. The Frames can be made or cast in any size or shape and with one or more
openings to hold the active material as may be required. The means for casting the
frame consists of a metal mould which we have devised see Fig. 1 and of which the
following is a description:-Fig. 1 is a plan of the mould with the top plate Fig. 3
taken off, showing all the other moveable parts a-B. The method of casting is as
follows the top plate C Fig. 3 being clamped on, the mould is turned on end, and
the molten lead is poured in at the opening shown at the arrow marked D fig. 1.
To extract the lead casting, the mould is unclamped and turned over. so that the top
plate C fig. 3 is at the bottom: then the base A fig. 1 can he lifted at the same time
bringing away with it the sections indicated bbbb fig. 1 which are permerantly
attached to the base A fig. 1. The frame B fig. 4 is then lifted off, leaving only the
sections a fig. 5 a. a. a. a. a. a. a. a. These can then be drawn away from it which
will allow the lead casting to come away perfectly free. The moveable sections a fig. 5
B fig. 4 being originally marked and fitted with pegs are then dropped into the base A
fig. 1 which is provided with corresponding holes to receive the pegs. The top plate C
fig. 3 is then replaced, clamped and the operation repeated.
"In order to assist the adhesion of the active material to or into the V. U or half
round internal edges of the frame and openings, wo mix spun glass with the active.
material.
To further secure the active material in such frames and openings as are likely to
be subjected to rough usage, we lace backwards and forwards through holes drilled in
the centre of the edges, edge to edge across the frame, lead wire which forms a sort
of trellis work support to all parts of the active material.
Dated this 13th day of February 1889.
COMPLETE SPECIFICATION.
Improvements in the Form and Manufacture of Secondary Battery
Frames and Plates.
We, ARTHUR DOUGLASS 65 Canonbury Road, London, North, Electrical Engineer
and FREDERICK SMITH 110 Lancaster Road, London, West, Gentleman, do hereby
declare the nature of this invention and in what manner the same is to he performed
to be particularly described and ascertained in and by the following statement :-
This invention relates to the manufacture and formation of frames and plates to act
as conductors and supports for holding and keeping in position the active material
used in Secondary Batteries or accumulators. The frames consist of a lead casting,
the edges of which are square on the outside, and V, U, or half round in the
inside, so that when the active material is once placed, pressed, or otherwise inserted
it is impossible for it to fall out. The frames can be made or cast in any size or
[Price-fid-l

page_text: shape, and with one or more openings to hold the active material, as may be
required.
In order to assist the adhesion of the active material to or into the V, U, or
half round internal edges of the frame and openings, wo mix spun glass with the
active material.
To further secure the active material in such frames and openings as are likely
to be subjected to rough usage, we lace backwards and forwards through holes
drilled in the centre of the edges, edge to edge, across the frame, lead wire,
which forms a sort of trellis work support to all parts of the active material.
The Figures, hereinafter referred to, are those which are illustrated on the
drawings accompanying our Provisional Specification.
The means for casting the frame consists of a metal mould which we have
devised, see Figure 1, and of which the following is a description;-
Figure 1 is a plan of the mould with the top plate, Figure 3, taken off, showing
all the other moveable parts a B. The method of casting is as follows, the top
plate C, Figure 3, being clamped on, the mould is turned on end and the molten
lead is poured in at the opening shown at the arrow marked D, Figure 1. To
extract the lead casting, the mould is unclamped and turned over, so that the top
plate C, Figure 3, is at the bottom, then the base A, Figure 1, can be lifted, at
the same time bringing away with it the sections indicated b, b, b, b, Figure 1,
which are permanently attached to the base A, Figure 1. The frame B,
Figure 4, is then lifted off, leaving only the sections a, Figure 5, a, a, a, a, a, a, a, a.
These can then be drawn away from it which will allow the lead casting to come
away perfectly free. The moveable sections a, Figure 5, B, Figure 4, being
originally marked and fitted with pegs, are then dropped into the base A, Figure 1,
which is provided with corresponding holes to receive the pegs.
Figure 3, is then replaced, clamped, and the operation repeated.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is
The top plate C.
1. The manufacture of lead frames with V, U, or half round inside edges for
retaining a plaster composed of Oxide of Lead, or other active agent in combina-
tion with spun glass in position, the whole constituting a Secondary Battery plate,
as set forth.
2. In combination with the above first claimed apparatus, the employment of
lead wire, as an additional means for holding the active agent in place, as
described.
1 m
T
1000
H. GARDNER,
166, Fleet Street, London,
Agent for the said Arthur Douglass and Frederick Smith.