Year: 1896

page_text: Date of Application, 1st Aug, 1896
Complete Specification Left, 3rd May, 1897-Accepted, 31st July, 1897
We, HEADLAND'S PATENT ELECTRIC STORAGE BATTERY COMPANY LIMITED, of
12 Pall Mall London, and 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:
The object of this invention is to provide suitable vent or means of escape for the
gases evolved in electric batteries whereby the escape of the liquid is prevented in
all positions and under all contingencies of use. For this purpose we provide a pipe
or passage of a circuitous (circular or other) form in or on the lid, said pipe or
passage taking one or more turns with a slight slope and communicating at the lower
end with the space above the liquid in the cell and at the upper end with the outer
air. The said end openings are by preference one above the other.
In one form we use a pipe say of glass, ebonite, or other suitable material coiled
round one turn either in a circle or about square or rectangular with rounded corners,
and having its lower end turned downward and passing down through the lid at one
side of the cell and its upper end turned upward. We then by preference run in a
suitable composition which both makes the lid tight and also keeps the pipe in place.
We also provide the lid, by preference in the iniddle, with a screwed filling plug.
In another form we make the lid thick enough to contain a groove formed around
the circumference or sides of the lid and slightly sloping, and we provide a down
passage to the interior of the cell and an up passage to the outer air.. This groove
forms a passage when the lid is put in. We also provide a filling plug in the
middle.
We prefer to slightly contract the upper outlet.
Cells made in this manner may be laid on the side or turned upside down or
exposed to violent concussions without spilling the liquid.
Dated thi
We, HEADLAND'S PATENT ELECTRIC STORAGE BATTERY COMPANY LIMITED, of
12 Pall Mall, London and HENRY WILLIAM HEADLAND of The Firs, High Road,
Leyton in the County of Essex Electrical Engineer do hereby declare the nature of
[Price 8d.1

page_text: 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 object of this invention is to provide suitable vent or means of escape
for the gases evolved in electric batteries whereby the escape of the liquid is prevented
in all positions and practically under all contingencies.
For this purpose we provide a pipe or passage of a circuitous (circular or other)
form in or on the lid, said pipe or passage taking one or more turns with a slight
slope and communicating at the lower end with the space above the liquid in the
case or cell and at the upper end with the outer air. The said end openings are by
preference one above the other.
In one form shown in the plan view Fig. 1 and the vertical section Fig. 2 which is
on line ab Figure 1 the case or cell A, of square, rectangular, round or other form
is provided with a lid B on or under which is coiled say one turn of a pipe C of
ebonite or other suitable material said pipe having its lower end C turned down and
passing through a hole B in the lid at one side of the cell and its upper end C
turned up, the openings being by preference one above the other as shewn. We may
then run in a suitable composition as shewn at B' which both makes the lid tight and
also keeps the pipe C in place. We also provide the lid by preference in the middle
with a screwed filling plug D. The case or cell A may have a bottom flange or
projections A¹ all round on which the lid can rest. If desired the bent pipe Cinay
rest on these projections A¹ in which case they would be at varying heights from the
horizontal so as to preserve the proper degree of inclination to the pipe and the
lid B might then be on top thereof and the end C2 of the said pipe would project
through the hole B2 in the lid instead of the end C¹ as shewn.
In another form shewn in the plan Fig. 3 and vertical section Fig. 4 which is on
the line c d Fig. 3 we make the lid B thick enough to contain a groove C formed
around the circumference or sides of the lid and slightly sloping all the way, and we
provide a down passage C¹ to the interior of the cell and an up passage C2 to the
outer air. This groove forms a passage when the lid is put in. We also provide a
filling plug D in the middle. The lid may conveniently rest on flanges or projections A¹
inside the case or cell A.
Cells made in this manner may be laid on the side or turned upside down or
exposed to violent concussions without spilling the liquid.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is:-
1. Providing the lid of an electric battery case or cell with a pipe or passage of a
circuitous and sloping form and communicating at the lower end with the space above
the liquid and at the upper end with the outer air substantially as and for the
purpose set forth.
2. The construction of lid with coil pipe above or below it substantially as described
with reference to Figs. 1 and 2.
3. The construction of lid with passage around it substantially as described with
reference to Figs. 3 and 4.
Dated this Third day of May 1807
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.