Year: 1896

page_text: Date of Application, 11th Jan., 1896
Complete Specification Left, 15th Aug., 1896-Accepted, 9th Jan., 1897
1, HENRY WILLIAM HEADLAND, of "The Firs," High Road, Leyton, in the
County of Essex, Electrical Engineer, do hereby declare the nature of this
invention to be as follows:-
My invention relates to a cellular frame or structure forming an improved retainer
for the active material. The frame or structure is made of lead by preference by
casting and is of a square section or approximately so. The structure consists
mainly of the following members viz., four outer corner posts, four inner corner
posts, and transverse ledges or bars which unite all the posts at suitable intervals.
Some of the ledges reach to the outer surface of the sides, while others, and by
preference the greater number, are set back from the outer surface. These
transverse bars are thin and flat and taper to a thin edge towards the outside.
The outer corner posts are of thin flat section and are set in a direction towards
the centre, the inner posts are of thin flat section or it may be of round or bulb
section, these posts are also set in a direction towards the centre, but do not reach
to the centre. Spaces are provided between each inner and corresponding outer
post, so that the active material lodging in such spaces keys together the active
material contained in two adjoining sides of the frame.
By this light and strong construction I expose to the action of the acid a
minimum surface of the lead and a maximum surface of the active material, while
the said material is thoroughly keyed together and retained and supported by the
structure flush with its outer faces and no portion of the said material is of such
large bulk as to tend to pull apart from the rest.
Two or more of these structures may be connected or combined, and in various
ways, to make up the positive and negative electrodes of a battery, the projections
on the top and bottom being suitable for connecting them by means of lead bars
fixed between said projections.
Dated this Woventh day of January 1806
improvement
I, HENRY WILLIAM HEADLAND of "The Firs," High Road, Leyton, in the
County of Essex, Electrical Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
My invention relates to a light and compact cellular frame or structure forming
a retainer of improved form for the active material. The frame or structure is
made of lead by preference by casting and is of a square section or approximately

page_text: so, that is to say rectangular. Fig. 1 is a side view of such a frame drawn for
clearness sake larger than I prefer to make it, Fig. 2 is a vertical section, Fig. 3 a
plan, Fig. 4 a horizontal section on line a-b and Fig. 5 a horizontal section on
lined. The structure which may be called a grid bar consists mainly of the
following members viz. four outer corner posts Å four inner corner posts B and
transverse ledges D and D' which unite all. the posts at suitable intervals. The
ledges D reach to the outer surface of the sides, while the ledges D' are set back
from the outer surface so as not to be in contact with the acid while also furthering
the continuity of the active material on the outside. These transverse ledges D
and D' are thin and flat and taper to a thin edge towards the outside. The outer
corner posts A are of thin flat section and are set in a direction towards the centre.
The inner posts B are of thin flat section or it may be of round or bulb section,
these posts are also set in a direction towards the centre but do not reach to the
centre. It will thus be seen that only the narrow front edges of the posts A and
ledges D are exposed to the acid. Spaces C are provided between each inner and
corresponding outer post, so that the active material lodging in such spaces keys
together the active material contained in two adjoining sides of the grid bar.
By this light and strong construction I expose to the action of the acid a
minimum surface of the lead and a maximum surface of the active material while
the said material is thoroughly keyed together and retained and supported by the
structure flush with its outer faces and no portion of the said material is of such
large bulk as to tend to pull away from the rest.
Two or more structures of this kind may be connected or combined, and in
various ways, to form or make up the positive and negative electrodes of a battery,
projections F on the top and bottom being sometimes provided for connecting them
by means of lead bars fixed between said projections.
Fig. 6 is a side view and Fig. 7 a plan of one arrangement of four grid bars two
such with positive active material being connected by a lead piece E with conductor
or tang F, and two with negative material being connected by a lead piece E¹ with
conductor F. By this arrangement I obtain four acting positive and four acting
negative surfaces parallel with each other and producing straight direct currents.
The bars are insulated as required at top by the insulators G shewn in plan in
Fig. 8 and in side view Fig. 9, and the bars are insulated at the bottom by the
insulators H shown in the plan Fig. 10 and aide view Fig. 11, the insulators may
for instance be of celluloid.
Fig. 12 is a side view, Fig. 13 a vertical sectional end view, Fig. 14 a plan
section and Fig. 15 a plan of three sets of grid bars, twelve in all as an example,
one set with positive material and two sets with negative material and yet so
arranged as only to take up the space of two rows of bars. This arrangement is
compact, takes up the minimum space and has the same uniform resistance because
the distances between the acting parallel surfaces of the grid bars are the same
everywhere. As will be understood from Fig. 15 the positive bars P, six in all
as an example, are in two series, three in each, all connected to the same lead
piece E with tangs F. The negative bars N are also in two series but those in
each series are separately connected by the lead pieces E' with tangs F. The
bars are so intercalated as to present in this instance two rows with 16 positive and
16 negative acting surfaces directly opposite and parallel with each other.
Insulators G are fitted between the bars at the top, and insulators H at the
bottom.
Another compact arrangement is shown in the side, view Fig. 16 and plan
Fig. 17. The positive grid bars P are connected lengthwise at top by the lead
bars E which are united by soldering to the frame E with the conductor tang F
while these grid bars are connected at the bottom by the lead bars E°, see Fig. 16,
the negative grid bars N are connected at top by the lead bars E' which are
united to the frame E' with conductor tang F. At the bottom the negative grid
bars N are connected by the lead bars E³ and fixed into sockets I' in transverse
framings I one of which is shown in plan view Fig. 18. These frames are provided

page_text: with square, rectangular or round rubber feet K inserted in corresponding cast.
recesses; these feet ensure a firm even bearing on the bottom of the battery box, in
spite of any slight unevenness of surface, and counteract shocks if the battery is
applied to traction purposes. The positive grid bars P are at top held in
insulators & shewn also in the side view Fig. 19 and which clip on the frame E';.
and the said bars are at the bottom held in insulator clips H (shewn also in the
side view Fig. 20) against stop E1 which prevent lateral displacement. Thus the
positive. bars are held securely in place, but can easily be lifted out. The
insulators G and H are for the sake of clearness only shown applied in one place-
in Figs. 16 and 17.
Having now particularly described and ascertained the nature of my said inven--
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. A light and compact cellular structure or frame for retaining the active
material within it, said frame being square or approximately so in section and
consisting mainly of four outer corner posts A, four inner corner posts B with
spaces C between each outer and corresponding inner post, and ledges or transverse
bars D and D' for uniting the aforesaid posts at suitable intervals, whereby a
minimum surface of the frame and a maximum surface of the active material
contained in the frame flush with the outside thereof are exposed to the action of
the acid, while the active material is thoroughly keyed together retained and
supported and no portion of same is of so large bulk as to tend to pull away from.
the rest substantially as set forth.
2. The arrangement of a battery, Figs. 6 to 11, in which two connected positive
grid bars P and two connected negative grid bars N are intercalated and arranged
within a square outline and provided with insulators G and H at top and bottom.
substantially as set forth.
3. The arrangement of a battery, Figs. 12 to 15, in which two series of positive
grid bars P are connected to one conductor and tang E F, and two series of
negative grid bars N connected to conductors E¹ and tangs F' are intercalated
between the positive grid bars in such manner that all the positive and negative.
grid bars form two rows and provided with insulators G and H at top and botto:n
substantially as set forth.
4. The arrangement of a battery, Figs. 16 to 20, in which the negative grid
bars N are arranged in rows and united at top by a frame E and at the bottom by
socket frames I with rubber feet K while the positive grid bars P are united at
top by a frame E and united at bottom in rows to bars E° that rest in insulators H
which fit in notches in the socket frames I and clip the same substantially as.
set forth.
Amount 1806
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents..