IMPROVEMENTS IN PORTABLE ELECTRIC LAMPS
Year: 1885

page_text: I JOHN EVELYN LLARDET of 16 London Street in the City of London Engineer
do hereby declare the nature of my, invention for "IMPROVEMENTS IN PORTABLE
ELECTRIC LAMPS," to be as follows:-
My improved electric lamp consists of a vase like vessel of porcelain or
earthenware supported on feet; it has a moveable horizontal dividing plate or
inner cover dividing the interior capacity into two parts an upper and a lower.
The lower part is also divided into separate cells-five is a convenient number―.
there is a central cylindrical cell, and four others grouped around it and separated
the one from the other by radial partitions. The inner cover rests on the top of
these partitions and closes the cells at the top.
Strips of vulcanised india rubber are placed on the top of the partitions for the
inner cover to rest upon. Passages are provided for filling the cells with liquid
and for drawing it off. A passage either moulded in the porcelain or earthenware
or it may be a vulcanised india rubber tube passes from the top of the vase to the
centre of the bottom where a small cylindrical recess is provided and from this
recess a branch passage leads into each of the cells; there is also an outlet passage
for emptying the cells. The central cavity in the bottom receives a plug or valve
by which the passages can be opened and closed. When filling the cells with
liquid all the passages excepting the outlet are open. The exciting liquid in
proper quantity is then poured in at the top of the main passage, it descends into
the cells and rises to the same height in all of them. The passages are then closed
by the valve in the central cavity. Similarly in emptying the cells the passages
including the outlet are opened, and the liquid runs out from all of the cells by the
one outlet passage.
The cover has apertures in it and into these the battery plates or elements are
inserted they consist of carbon and zinc or it may be other electro positive and
negative materials. The plates are formed with heads and by these they hang.
The usual connections are formed by wires or conductors on the upper side of the
cover. An asbestos cord is connected with the cover and by this it can be drawn
up so as to raise all the elements simultaneously out of the liquid.
Within the vase near the top a barrel is provided and on this the cord is wound
when it is desired so to lift the cover with the elements and thus to extinguish
the lamp. The vase receives an upper cover or lid and upon these incandescent
lamps are grouped, they are provided with opalescent shades and reflectors. Or in
some cases I provide the vase with lugs or handles and these also serve to carry
lamps.
1700K
CARPMAEL & Co.,
Agents for the Applicant.

page_text: I JOHN EVELYN LIARDET of 16 London Street in the City of London Engineer
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:
My improved electric lamp consists of a vase like vessel of porcelain or
earthenware supported on feet, it has a moveable horizontal dividing plate or
inner cover dividing the interior capacity into two parts an upper and a lower.
The lower part is also divided into separate cells-five is a convenient number-
there is a central cylindrical cell and four others grouped around it and separated
the one from the other by radial partitions. The inner cover rests on the top of
these partitions and closes the cells at the top.
Strips of vulcanised india rubber are placed on the top of the partitions for the
inner cover to rest upon. Passages are provided for filling the cells with liquid,
and for drawing it off. A passage either moulded in the porcelain or earthen ware
or it may be a vulcanised india rubber tube passes from the top of the vase to the
centre of the bottom where a small cylindrical recess is provided and from this
recess a branch passage leads into each of the cells, there is also an outlet passage
for emptying the cells. The central cavity in the bottom receives a plug or valve
by which the passages can be opened and closed. When filling the cells with
liquid all the passages excepting the outlet are open. The exciting liquid in
proper quantity is then poured in at the top of the main passage, it descends into
the cells and rises to the same height in all of them. The passages are then closed
by the valve in the central cavity. Similarly in emptying the cells the passages
including the outlet are opened' and the liquid runs out from all of the cells by the
one outlet passage.
The cover hus apertures in it and into these the battery plates or elements are
inserted they consist of carbon and zinc or it may be other electro positive and
negative materials.
•
The plates are formed with heads and by these they hang. The usual con-
nections are formed by wires or conductors on the upper side of the cover. A cord
is connected with the cover and by this it can be drawn up so as to raise all the
elements simultaneously out of the liquid.
Within the vase near the top a barrel is provided and on this the cord is wound
when it is desired so to lift the cover with the elements and thus to extinguish the
lamp. The vase receives an upper cover or lid and upon these incandescent lamps
are grouped; they are provided with opalescent shades and reflectors. Or in some
cases I provide the vase with lugs or handles and these also serve to carry lamps.
In order that my said invention may be fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of a portable electric lamp constructed according to
my invention.
Figure 2 is a vertical section of the lower part of the same.
Figure 3 is a transverse section on the line A, A, in Figure 2.
a a is the vase of earthenware or any other suitable material. a¹ a¹ are

page_text: partitions of porous earthenware again dividing each cell into two parts-this is
done when two liquids are to be used but for a single liquid battery it is not
required. is an inner cover of earthenware or other material with which the
cells are provided, it has holes in it. cc are the battery elements, usually zinc and
carbon, they are formed with heads and are inserted through holes in the cover b.
d is a barrel upon an axis d from this barrel the cover b is suspended by a cat
gut e. The axis receives a handle at one end by which it can be turned to lift the
elements out of the cells. When the elements are raised the axis is secured in any
convenient manner, for example, it may be square for a short distance at its
further end and be capable of a slight movement end wise to bring the squared
part of the axis into a recess of corresponding form on the outer side of the lug on
the vase in which this part of the axis is carried.
a³ a are filling passages formed in the vase, two are shown but for a single
fluid battery one only would be required. These passages lead down to a
cylindrical recess beneath the bottom of the cells.
.
f is a plug which fits this recess and which according to the position to which it.
is turned closes the passages a³ a* or connects one or other of them with passages.
leading into the cells. A portion of one of these passages is seen at a³ they each
lead from one of the cells into the central recess;-by turning the plug f in
a suitable position the passages a³ can all be closed and they are so closed when
the lamp is in use. There are two sets of passages a³ one set corresponding with
the filling passage a³ and serving for the introduction of one of the liquids and the
other corresponding with the filling passage a and serving to convey the other
liquid into the cells. f¹ f¹ are the cavities in the plug which place the passages
already named into communication as described. f is another cavity in the plug
which can be brought to coincide with the passages a and this then connects
these passages with an outlet shown by dotted lines at a by which the cells of the
vase are all simultaneously emptied. a' a' are arms on the vase to carry incan-
descent lamps. gg are these lamps. h is a cover this carries other lamps i i.
The lamps are connected with the battery elements by flexible covered wires
which are concealed within the vase.. It is not necessary that all the incandescent
lamps should be burning at the same time.
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. Apparatus for obtaining electric light consisting of a vase divided at the
lower part into battery cells, a cover to these cells to which battery elements are
attached, apparatus by which this cover may be lifted within the vase to raise the
battery elements out of the cells and incandescent lamps supported upon the vase
or its cover and suitably connected with the battery elements substantially as
described.
2. Apparatus for obtaining electric light consisting of a vase divided at the
lower part into battery cells; filling and drawing off passages connected with
these cells, a plug controlling these passages, battery elements immersed in the
cells and incandescent lamps supported upon the vase or its cover and suitably
connected with the battery elements substantially as described.
3. Apparatus for obtaining electric light substantially as described and repre-
sented by the annexed drawings.