Improvements in or connected with Gas Lamps.
Year: 1891

page_text: Date of Application, 17th Nov., 1891
Complete Specification Left, 17th Aug., 1892-Accepted, 17th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Gas Lamps.
1, STEPHEN HOLMAN of 15 Great George Street in the City of Westminster,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide gas lamps with simple ready and
efficient means whereby lamps having closed lanterns or globes, or which are
situated at such an elevation or in such place that the burner or burners cannot
be conveniently reached for lighting, can be lighted from the exterior or from
below or some other place whereat it is more convenient to apply the light.
The invention also includes an arrangement by which when several lights are
used one of them can be left burning whilst the others are extinguished and all
the operations be performed by one and the same gas cock. The invention also
includes, when applied to lamps which are used to consume sewer gas, an.
arrangement whereby the sewer gas is conducted into the lantern and there burnt.
I provide in the pipe or passage by which the illuminating gas is conducted to the
burner or burners or in a special pipe or passage leading thereto small openings or
perforations extending in a series to the burner or burners from the exterior of the
lamp or other place at which the light is to be applied. These perforations are
opened when the gas cock is partly turned to supply gas to the burner or burners.
On a light being applied to the perforations the gas issuing therefrom is ignited
and the flame ignites the gas issuing from the succeeding perforations and so on
until the burner is, or burners are, reached and the gas issuing therefrom is ignited.
The gas cock is now turned to a further extent and by this operation the gas is
shut off from the perforations whilst at the same time it is more fully turned on to
the burner or burners. The opening and closing of the perforations may be effected in
any convenient way for example I may use two tubes one inside the other and per-
forated so that the perforations in both tubes coincide with each other at the required
times. If there be angles in the piping the tubes can be geared by bevel wheels
or other equivalent devices at the angles. Or the gas to the burner or burners
may be supplied by a special tube or tubes and the perforations be in a
surrounding or separate tube the gas cock being provided with passages suitable
to open and close the gas ways to the burner or burners and perforations as
described. When I employ several burners (say three) I may provide the gas
cock with passages in two or more parallel planes through the plug (with an
additional way therethrough when the aforesaid lighting perforations are employed
for the gas to pass to these perforations). One of these passages is in such a
position that on first opening the tap (after the gas has been supplied to the perfora-
tions aforesaid if they be used) the gas passes to the extra burners and the other of
these passages at the same time opens communication for gas to the burner which
is to be used singly but when the cock is further moved the gas passage to the
extra burners is cut off but owing to the gas way through the plug of the cock
for supply to the burner which is to be used singly being continued laterally.
gas is still supplied to the last named burner after the supply of gas to the other
burners is cut off.
When the invention is applied to burners in which it is not desired to effect the
lighting as described the lever or handle by which the gas cock is operated may be
inside the lantern or globe.
When the lighting arrangement hereinbefore referred to is employed there may
be provided a passage extending laterally from the pipes by which the gas to the
burner or burners is supplied and such extension may constitute an elongated

page_text: spindle or stem for the gas cock the said extension being perforated and in com-
munication with the gas way through the cock so that the supply of gas to the
perforations therein will be closed and opened simultaneously with those in the tube
leading to the burner.
The arrangement described for lighting can be applied with considerable
advantage to street lamps with closed lanterns such as are used in connection with
sewers for ventilating them and consuming the sewer gases the said gases being led
through the lamp post or support and directed into the lantern by suitable openings
formed by a support for the gas pipe situated at the bottom of the lantern.
Dated this 17th day of November 1891.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
.
COMPLETE SPECIFICATION.
Improvements in or connected with Gas Lamps.
I STEPHEN HOLMAN of 15 Great George Street in the City of Westminster
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 :-
The principal object of my invention is to provide gas lamps with simple
ready and efficient means whereby lamps, having closed lanterns or globes, or which
are situated at such an elevation, or in such place, that the burner, or burners,
cannot be conveniently reached for lighting can be lighted from the exterior, or
from below, or some other place whereat it is more convenient to apply the light.
My invention also includes an arrangement by which when several lights are
used one or some of them can be left burning whilst the other, or others, is or
are extinguished and all the operations be performed by one and the same gas
cock. When the invention is applied to lamps which are used to consume
sewer gas, the sewer gas may be conducted into the lantern and be therein
burnt.
I provide in the pipe, or passage, by which the illuminating gas is conducted
to the burner, or burners, or in a special pipe, or passage, leading thereto,
small openings, or perforations, extending in a series to the burner, or burners,
from the exterior of the lamp or other place at which the light is to be applied.
These perforations are supplied with gas when the gas cock is partly turned to
supply gas to the burner or burners. On a light being applied to the perforations
the gas issuing therefrom is ignited and the flame ignites the gas issuing from the
succeeding perforations and so on, until the burner is, or burners are, reached and
the gas issuing therefrom is ignited. The gas cock is now turned to a further
extent and by this operation the gas is shut off from the perforations whilst at the
same time, it is more fully turned on to supply the burner or burners. Figure 1 of
the accompanying drawing represents an arrangement according to this invention
shewing it as applied to a lamp with three burners which can all be kept burning,,
or two of which can be extinguished whilst one is kept burning. I have also
shewn an arrangement according to my invention for effecting the lighting of the
gas in the manner hereinbefore described. In this arrangement the perforations,
through which the gas passes, for lighting in the said manner, are formed in a tube,
separate from that, or those, which supports, or support the burners, and in an
outward extension from the gas cock as hereinafter described but I do not limit.
myself to that arrangement. The opening and closing of the said perforations or
of the gas supply thereto may be effected in any convenient way; for example:
I may use two tubes one inside the other and perforated so that the perforations in
both tubes coincide with each other at the required times. In this case one of these
tubes may be the tube which supplies gas to the burner or burners.
In such an

page_text: arrangement if there be angles in the piping the tubes can be geared by bevel
wheels, or other equivalent devices, at the angles.
In the arrangement shewn in Figure 1 the gas is supplied to the burner, or
burners by a special tube or tubes marked A and B and the perforations e are in a
surrounding or separate tube marked C the gas cock D being provided with
independent passages suitable to open and close the gas ways to the burner or
burners and perforations as described. Where there are several burners to be
lighted and they are some distance apart the pipe C may be continued in branches
to each burner. When I employ several burners (say three as in Figure 1) I may
provide the gas cock with passages in two or more parallel planes through the plug
as at a (with an additional way as at 2 therethrough when the aforesaid lighting
perforations are employed for the gas to pass to these perforations).
Figure 2 is a diagram plan of such an arrangement as designed for the burners
Figure 1. The various positions of the plug being shewn at 1. 2. 3 and 4. The
full lines indicate the way for supplying gas to the tube A, the dotted lines the way
for the tube B and the dot-and-pick lines the way for the tube C. At 1 the whole
of the gas supply is cut off, at 2 the lighting jets receive gas, at 3 and 4 the
lighting jets are not supplied with gas but at 3 the three burners are supplied with
gas by the tubes A and B; at 4 gas is cut off from the tubes A and C and gas
is only supplied to the burner on the tube B the gas way supplying this tube having
sideway passages as shewn for this purpose. On first opening the tap (after the
gas has been supplied to the perforations aforesaid if they be used) the gas passes
to the extra burners and the other of these passages at the same time opens com-
inunication for gas to the burner which is to be used singly but when the cock is
further moved the gas passage to the extra burners is cut off, but owing to the
gasway through the plug of the cock for supply to the burner which is to be used
singly being continued laterally as shown at a Fig. 4. of the drawings gas is still
supplied to the last named burner after the supply of gas to the other burners is
cut off.
6
When the invention is applied to burners in which it is not desired to effect the
lighting as described the lever, or handle, by which the gas cock is operated may
be inside the lantern or globe as shewn in Figure 3 where e is the said lever or
handle. In this arrangement there are two ways through the plug of the gas cock.
Figures 4 and 5 are sections at right angles to each other shewing these passages
which are arranged substantially as in the arrangement Figure 1 except that the
gas ways are at right angles and the orifice for the gas to the lighting arrangement
is not required.
When the lighting arrangement hereinbefore referred to is employed there may
be provided a passage extending laterally from the pipes by which the gas to the
burner, or burners, is supplied and such extension may constitute an elongated
spindle, or stein, for the gas cock as at a Figure 1 the said extension being
perforated as indicated by the arrows and in communication with the gas way c²
through the cock so that the supply of gas to the perforations therein will be
established and cut off simultaneously with those in the tube C leading to the
buruer or burners for lighting as aforesaid.
The arrangement described for lighting can be applied with considerable advan-
tage to street lamps with closed lanterns such as are used in connection with sewers
for ventilating them, and consuming the sewer gases, the said gases being led
through the lamp post, or support, and directed into the lantern by suitable
openings formed by a support for the gas pipe situated at the bottom of the
lantern.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
1st. For lighting gas lamps from outside a lantern or other place easy of access,
a series of gas outlet perforations leading from the said place to the burner or

page_text: burners the supply of gas to which perforations can be closed when the lamp
is burning and be opened when the lamp is to be lighted so that the igniting of
the gas at the place outside the lantern or casy of access causes the light to
be transmitted to the burner or burners substantially as hereinbefore described.
2nd. For lighting gas lamps from outside a lantern, or other place easy of
access, a separate or independent passage in the gas cock supplying a series of
gas outlet perforations leading from the said place to the burner or burners
the supply of gas to the said perforations being capable of being closed by a
further movement of the gas cock whilst the gas supply to the burner or burners
is still maintained.
3rd. The arrangement of gas lamp substantially as hereinbefore described and
shewn in Figures 1 and 2 of the accompanying drawings.
4th. A single gas cock for gas lamps having in it independent gas passages
so arranged that by moving the plug to open the passages gas is supplied first
to the igniting perforations and by a further movement gas is supplied to the
burner or burners only the gas to the igniting perforations by the same movement
being shut off and, by a further movement the supply of gas to a burner or to some
of the burners is cut off whilst its supply is continued to other or others of the
burners and so also that the supply of gas can be entirely cut off when required
substantially as hereinbefore explained and shewn in Figures 1 and 2 of the accom-
panying drawings.
5th. A single gas cock for gas lamps having in it independent gas passages so
arranged that by moving the plug of the one gas cock to various positions gas is
supplied to both or all of the burners or the supply to a burner or burners is cut off
whilst the supply is continued to the other or others of the burners or the gas
supply is entirely cut off substantially as hereinbefore described with reference to
Figures 3. 4 and 5 of the accompanying drawings.
Dated this 17th day of August 1892.
J. H. JOHNSON & Co.,
Agents.