Improvements in Overhead Lamps.
Year: 1896

page_text: Date of Application, 5th June, 1896
Complete Specification Left, 4th Mar., 1897-Accepted, 5th June, 1897
Improvements in Overhead Lamps.
I, CHARLES RICHARDS, Engineer, 156 Dalston Lane, Hackney, in the County
of London do hereby declare the nature of this invention to be as follows:-
In the lamp according to my invention the oil is contained in an annular
reservoir shaped in such a manner that the inner part of the reservoir serves as
a reflector. The reservoir is not enclosed in the body of the lamp, as in other
overhead or roof lamps, but it is outside and entirely free, suspended below the
lamp in order to keep it cool. To the upper body of the lamp it is attached by
two stays and an air shaft. A space is left between the reservoir and the upper
body so that the light can penetrate between the reservoir and the upper body as.
well as downwards through the reservoir. The air shaft has an opening in its-
inner side through which a flat wick tube projects horizontally towards the centre
of the annular reservoir. In this manner I may do away with large size over all
glass bowls such as are ordinarily used for overhead lamps and in its place.
I introduce a miniature glass bowl which being smaller and closer to the flame
ensures a better combustion and saving from breakages. This bowl is embedded
with a suitable washer in a metal ring attached to the brackets centrally over the
annular opening of the reservoir. The glass bowl I provide with a hole in its
side. This hole fits over a socket on the air shaft and is made air-tight by a flanged
tube and packed with asbestos or other suitable packing. I also provide a grating
to check the air coming down the air shaft.
For filling the reservoir I provide a feed screw outside the lamp. The flame
may be regulated inside or from outside the lamp. The small glass bowl is covered
by a lid in the centre of which I provide a flue with a reflector for carrying off
the products of combustion. The lid fits air-tight on the top of the glass bowl
which therefore forms a closed combustion chamber. The lid is fastened outside
to a rim which is attached to the top or cover of the lamp. The cover is hinged
and provided with the usual wind-guards and top for the escape of the combustion
products. The lid is pierced with inlet holes round the flue to which the air is fed
through the holes in the side of the rim. In this manner air is conducted into the
glass bowl from inside the compartment and as air also enters the glass bowl
through the air shaft from outside the carriage a double combustion chamber is
produced whereby I obtain a very perfect combustion. Air in this manner is fed
from the top and from below to the flame keeping the glass bowl perfectly cool.
The cone which produces the flame is attached by a bracket to the lid which
covers the glass bowl and therefore when the lamp is opened the cone is moved
away from the wick and clears the burner tube ready for trimming and
lighting up.
Dated thin 5th In
CHARLES RICHARDS.

page_text: で
1 CHARLES RICHARDS Engineer of 156, Dhlston Lane Hackney, County of
Middlesex, 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:-
In this lamp according to my invention the oil is contained in an annular
reservoir shaped in such a manner that the inner part of the reservoir serves as
reflector.
.
The reservoir is 'not enclosed in the body of the lamp as in other overhead
or roof lamps but is outside and intirely free, suspended below the lamp in order
to keep it cool. To the upper body of the lamp it is attached by two stays and an
air shaft.
A space is left between the reservoir and the upper body so that the light can
penetrate between the reservoir and the upper body as well as downwards through
the reservoir.
The air shaft has an opening in its inner side through which a flat wick
tube projects horizontally towards the centre of the annular reservoir. In this
manner I may do away with large size over all glass bowls such as are ordinerly
usd for overhead lamps and in its place I introduce a miniature glass bowl which
being smaller and closer to the flame it ensures a better combustion and saving
from breakages. This bowl is embedded with a suitable washer in a metal ring
attached to the brackets centrally over the annular opening of the reservoir. The
glass bowl I provide with a hole in its side. This bole fits over a socket attached
to the air shaft and is made airtight by a flanged tube and suitable packing-in
this tube I provide also a grating to check the air coming down the air shaft.
For filling the reservoir 1 provide a feed screw outside the lamp.
The flame may be regulated inside or outside the lamp.
The small glass bowl is coverd by a lid in the centre of which I provide a flue
with a reflector for carrying off the products of combustion. The lid fits airtight
on the top of the glass bowl which therefore forms a closed combustion
chamber.
The lid is fastened outside to a rim which is attached to the top or cover of the
lamp.
The cover is binged and provided with the usual windgards and top for the
escape of the combustion products. The lid is pierced with inlet holes round the
flue to which the air is fed through the holes in the side of the rim. In this
manner air is conducted into the glass bowl from inside the compartment and as
air also enters the glass bowl through the air shaft from outside the carriage a
double combustion chamber is produced whereby I obtain a very perfect
combustion. Air in this manner is fed from the top and from below to the flame
keeping the glass bowl cool and from cracking. The cone which produces the
flame is attached by a bracket to the lid which covers the glass bowl and therfore
when the lamp is opened the cone is moved away from the wick and clears the
burner tube ready for trimming and lighting up. It will be seen that the cone
and top are the only parts which are movable for trimming and lighting up no
disarrangment can take place. The accompaying drawing is a vertical section of
my lamp: a. is the reservoir. b. the inner reflector of the reservoir. c. the upper
body. d. the stays. e. the air shaft. f. the space between reservoir aud upper
body. g. the opening in air shaft. h. the flat wick tube. i. the miniature glass
bowl. J the metal ring with washers. k. the hole in glass bowl. . the socket on
m. the grating and flange. n. the feed screw. o. the lid covering the
air shaft.

page_text: glass bowl. p. the flue with the reflector. q. the top or cover of lamp. r. the-
hinge. 3. the inlet holes in cover. t. the side holes in rim. u. the cone.
r. the dotted lines of cone when top is moved away.
Having now particularly described and ascertained the nature of this inven-.
tion and in what manner the same is to be performed, I declare that what I
claim is-
1st. An overhead lamp in which no parts have to be removed for trimming or
cleaning.
2nd. A miniature glass bowl with a side hole. It may be cast or blown or made.
in sections and fixed as described.
3rd. An overhead lamp where the reservoir is so fixed that there is a space or-
opening left for the light to penetrate through the sides also downwards substantially-
described to the drawings.
Dated this 4th day of February 1897.
CHARLES RICHARDS..