Improvements in Lighting by Means of Gas.
Year: 1889

page_text: Date of Application, 12th Dec., 1889
Complete Specification Left, 12th Sept., 1890-Accepted, 18th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lighting by Means of Gas.
I, WILLIAM SMITH of 1 Marsham Street in the City of Westminster, Poulterer, do
hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in lighting by means of gas.
A ceiling light is constructed as follows:-The gas pipe is arranged to descend
vertically through the ceiling and near its lower end it carries an argand burner.
The burner is fed from the gas pipe by tubular connections.
The pipe or preferably a stem forming a continuation of the pipe passes concentrically
through the burner and it serves to support a glass globe in which the burner is
enclosed.
On the stem at its lower end is a rest upon which the globe is supported; the rest
is concealed by a glass disc or cup kept in place by a nut on the stem and perforated
for the admission of air to the flaine. Within the globe the burner is provided with
the ordinary chimney and with a ground glass outer chimney to distribute the light.
A neck at the top of the globe is received into the bottom of a copper dome surrounding
the upper part of the gas pipe and connected with a flue pipe concentric therewith.
This flue pipe conveys away the products of combustion from the burner and delivers
them into a chimney or otherwise. There is also a ventilating pipe above the ceiling
and perforations through the ceiling around the gas pipe admit vitiated air from the
room to the ventilating pipe. The ventilating pipe may be connected with a chimney
or it may be carried up through the roof. The flue pipe from the burner passes
through the ventilating pipe.
The copper dome is hidden by leaves of silvered glass which surround it and these
spring from an openwork crown surrounding the neck of the globe. Within the crown
a ring of ruby glass is seen.
Upon the ceiling around the leaves of silvered glass there is an annular plate of
silvered glass serving as a reflector.
By these arrangements a shadowless light is obtained whilst the products of com-
bustion are not permitted to enter the room.
Dated this 12th day of December 1889.
CARPMAEL & Co.,
A cents
COMPLETE SPECIFICATION.
Improvements in Lighting by Means of Gas.
1, WILLIAM SMITH of 1 Marsham Street in the City of Westminster, Poulterer, 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:-
This invention has for its object improvements in lighting by means of gas.
A ceiling light is constructed as is illustrated by the annexed drawing as follows:-
The drawing is an elevation partly in section. The gas pipe a is arranged to descend
vertically through the ceiling b and near its lower end it carries an argand burner c.
The burner is fed from the gas pipe by tubular connections.
The pipe or preferably a stem a¹ forming a continuation of the pipe passes concen-
trically through the burner and it serves to support a glass globe à in which the
burner is enclosed.
On the stem a¹ at its lower end is a rest upon which the globe d is supported; the
rest is concealed by a glass disc or cup e kept in place by a nut on the stem a¹ and
LD.

page_text: perforated for the admission of air to the flame. Within the globe the burner is
provided with the chimney fand with a ground glass outer chimney g to distribute
the light. The diameter of the chimney fis about double that of the annular flame
from the burner. A neck d' at the top of the globe d is received into the bottom of
a copper dome h surrounding the upper part of the gas pipe. h¹ are perforations or air
passages in the dome.
The dome is connected with a flue pipe i concentric with the
gas pipe.
This flue pipe conveys away the products of combustion from the burner and delivers
them into a chimney or otherwise. There is also a ventilating pipe k above the
ceiling and perforations through the ceiling around the gas pipe admit vitiated air
from the room to the ventilating pipe. The ventilating pipe may be connected with a
chimney or it may be carried up through the roof. The flue pipe from the burner passes
through the ventilating pipe.
The copper dome h is hidden by leaves of silvered glass which surround it and
these spring from an openwork crown m surrounding the neck of the globe. Within
the crown a ring m¹ of ruby glass is seen.
Upon the ceiling around the leaves of silvered glass there is an annular plate-n of
silvered glass serving as a reflector.
By these arrangements a shadowless light is obtained whilst the products of combus-
tion are not permitted to enter the room.
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. In a ceiling light the combination consisting of the gas pipe a; the burner c
the chimney f; the globe d; the dome ; and the flue pipe i substantially as
described.
2. In a ceiling light the combination consisting of the parts a b d f h and i and the
ventilating pipe k surrounding the flue pipe i substantially as described.
3. In a ceiling light the combination consisting of the parts a b d f h and i and the
leaves of silvered glass and the annular plate of silvered glass n substantially as
described.
4. A ceiling light substantially as described and illustrated by the annexed
drawing.
1
1000