Improvements in Gas Outlet Valves or Plugs for Electrio Battery Cells or other like Vessels.
Year: 1891

page_text: Date of Application, 1st Oct., 1891
Complete Specification Left, 23rd June, 1892-Accepted, 1st Oct. 1892
PROVISIONAL SPECIFICATION.
Improvements in Gas Outlet Valves or Plugs for Electrio Battery
Cells or other like Vessels.
.
I WILLIAM MOSCROP of 11 Tankerville Road, Streatham Common in the
County of Surrey, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide a gas outlet valve or plug which will allow
gas to escape from the interior of a cell or vessel but will prevent liquid or any
considerable quantity of liquid escaping therefrom the said valve or plug being
arranged or constructed so that its passages for gas will not become clogged with
liquid. According to my invention the valve or plug consists of an outer hollow
part or cup which has at its lower part a small hole for the exit of gas the said
hollow part or cup being inserted into an orifice in the upper part of the cell or
vessel so that the hole is in communication with the interior of the cell or vessel.
Into this hollow part or cup is tightly fitted an inner hollow part having leading
from it a small hole terminating at the exterior of the said inner part preferably at
an inclined surface on the said exterior. The said hole is in communication with the
interior of the outer hollow part or cup. Gas from the cell or vessel can pass freely
through the aforesaid holes and out from the cell or vessel to the exterior thereof
whilst liquid will drain away back into the cell or vessel and leave the holes free
for the passage of the gas whilst if the cell or vessel be overturned none of the
liquid or no objectionable quantity thereof will pass therefrom.
Dated this 1st day of October 1891
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
Improvements in Gas Outlet Valves or Plugs for Electric Battery
Cells or other like Vessels.
I, WILLIAM MOSCROP of 11 Tankerville Road, Streatham Common, in the
County of Surrey, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
The object of my invention is to provide a gas outlet valve, or plug which will
allow gas to escape from the interior of a cell, or vessel, but will prevent liquid or
any considerable quantity of liquid escaping therefrom the said valve, or plug,
being arranged, or constructed, so that its passages for gas will not become clogged
with liquid in such a way as to cause the escaping gas to carry the said liquid out
with it. According to my invention the valve, or plug, consists of an outer hollow
part chamber or cup, (marked A in the accompanying drawings), which has at its
lower part a small hole (marked a in the accompanying drawings) for the exit of
gas the said hollow part chamber or cup, being inserted into an orifice in the upper
part of the cell, or vessel, or connected therewith so that the hole is in communica-
tion with the interior of the cell or vessel. Into this hollow part, chamber or cup,
is tightly fitted an inner hollow part (marked B in the accompanying drawings),
having, leading from it, a small hole, (marked b in the accompanying drawings),
terminating at the exterior of the said inner part preferably at an inclined surface
on the said exterior. The said hole is in communication with the interior of the
outer hollow part, chamber or cup, (A). Gas from the cell, or vessel, can pass

page_text: freely through the aforesaid holes (a, h,) and out from the cell, or vessel, to the
exterior thereof; whilst liquid will drain back, and leave the holes free for the
passage of the gas whilst if the cell, or vessel, be overturned none of the liquid, or
no objectionable quantity thereof, will pass therefrom.
The details of the arrangements according to my invention may be considerably
varied, but, in order that it may be well understood, I will describe with reference
to the accompanying drawings, the best means with which I am acquainted for
carrying it into practical effect.
Figure 1 is a plan, and Figure 2 is a vertical section, of a simple arrangement
according to my invention. C represents a part of the top of the vessel, or cover,
of the cell, to which my valve or plug is applied; the outer hollow part, or cup A,
being inserted gas tightly therein. Inserted tightly into the upper part of this
cup A, is the inner part B. The parts A, and B, have in them the small holes
marked a, and b, respectively they being shewn as being formed in inclined parts of
the lower portions of the said parts A, and B, to allow any liquid that may enter to
readily drain off' in passing back to the cell, or vessel. If it be desired that the
part A, be of considerable capacity I may make it deep enough to descend any
required distance below the level of the liquid, or electrolyte, in the vessel, or cell,
as shewn in Figure 3, and I then continue the hole a, by a tube a' up to above the
level of the liquid. In Figure 41 have shewn this tube as being outside the part A
instead of inside it as in Figure 3. In Figure 5 I have shewn a part A of small
depth with the tube a² of considerable length effected by coiling it as shewn. The
part B, is shewn, in Figures 3, 4 and 5, as consisting of a stopper, as in Figures 1
and 2, but with the small opening constituted by a tube inserted therein and
depending therefrom. The device Figure 3 is shewn in Figure 6 as inserted in a
cell but the devices may be placed in any desired position in, or on, or communicating
with the cell or vessel; for instance instead of the part A, being inserted into a
hole in the cover as in Figures 1 and 6 the device may be situated outside the cell,
or vessel, at the side with its tube a communicating with the interior of the cell, or
vessel, through the side, and above the level of the liquid therein. The tube a² may
be dispensed with the opening into the part A being situated above the liquid in
the cell or vessel but this plan is not recommended as then any liquid which
passes into the part A on the cell or vessel being reyersed would not pass back into
the cell or vessel on its being returned to its proper position.
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 1
claim is :-
1. In a gas outlet-valve, or plug, for secondary batteries, or other vessels, from
which gas, but not liquid, is to be allowed to escape, the combination of a hollow
part, chamber or cup, (such as A) having a small hole therein, communicating with
the interior of the cell, or vessel, as described and a part B having, at its lower
part, a small hole communicating with the interior of the part A; all substantially
as hereinbefore described.
2. The several constructions of gas outlet valves, or plugs, substantially as
herein before described and illustrated respectively in Figures 1 and 2, Figures 3
and 6, Figure 4 and Figure 5 of the accompanying drawings.
Dated the 23rd day of June 1892.
J. H. JOHNSON & Co.,
Agents.