IMPROVE- MONNO IN THE CONSTRUCTION OR LAMPS
Year: 1871

page_text: LETTERS PATENT to Richard Bright, of Bruton Street, in the City of
Westminster, Lamp Manufacturer, for the Invention of "IMPROVE-
MONNO IN THE CONSTRUCTION OR LAMPS "
PROVISIONAL SPECIFICATION left by the said Richard Bright at
the Office of the Commissioners of Patents, with his Petition, on
the 21st July 1871.
I, RICHARD BRIGHT, of Bruton Street, in the City of Westminster,
Lamp Manufacturer, do hereby declare the nature of the said Inven-
tion for IMPROVEMENTS IN THE CONSTRUCTION OF LAMPS," to be as
follows:-
"
This Invention relates more particularly to that class of lamps in
which the wick is fixed, and the liquid to be consumed is forced up to
the wick and then overflows and runs down again into the reservoir.
In some of these lamps the chimney holder, which also acts as a
regulator, is connected with a tubular extinguisher, and works with it.
This has been found to be inconvenient.

page_text: This present Invention therefore consists, first, in detaching the
chimney holder from the concentric tube extinguisher, so that each of
these parts may be able to act independent of the other. To this end
the chimney holder is connected by arms or brackets to a short tube
which works up and down outside the tubular burner, and is actuated
by a rack and pinion motion. The concentric extinguisher tubes are
connected together by a cross pin or screw which passes through a slot
or long vertical hole in the side of the Argand burner. The extinguisher
tubes are moved up or down by means of a spring rod, one end of which
is secured to the inside of the inner tube, and the other end is bent at 1
right angles, and forms a handle whereby the extinguisher is raised or
lowered. The lower or bent end of this rod is provided with a handle
and works in a spring guide fixed to the body of the lamp or to the
lower part of the burner, and this guide acts as a spring clip to hold up
the extinguisher tubes when they are raised by the rod to put out the
light.
Tithon of these improvements max ha annlied to moderator lamne
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Bright in the Great Seal Patent Office
on the 20th January 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
BRIGHT, of Bruton Street, in the City of Westminster, Lamp Manu-
facturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of July, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Richard Bright, Her special licence that
I, the said Richard Bright, my executors, administrators, and assigns,
or such others as I, the said Richard Bright, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE CON-

page_text: STRUCTION OF LAMPS," upon the condition (amongst others) that I, the
said Richard Bright, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Bright, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the Drawing hereunto
annexed and to the letters and figures marked thereon (that is to
say) :-
This Invention of "Improvements in the Construction of Lamps"
relates more particularly to that class of lamps in which the wick is
fixed, and the liquid to be consumed is forced up to the wick, and
then overflows and runs down again into the reservoir. In some of
these lamps the chimney holder, which also acts as a regulator and also
serves to modify the action of the air on the flame, is connected with a
tubular extinguisher and works with it. This arrangement has been
found to be inconvenient, as sometimes it is desirable to move one of
these parts without the other.
The present Invention therefore consists in detaching the chimney
holder from the concentric tube extinguisher, so that each of these parts
may be able to act independently of the other.
In the accompanying Drawing, Fig. 1 is an outside elevation of the
upper part of a lamp constructed according to my Invention; Fig. 2 is
a sectional elevation of the same; Fig. 3 is another sectional elevation
with the external cylinder removed.
The chimney holder a is connected by arms or brackets a¹, a¹, to a
short tube b, which works up and down outside the tubular burner c,
and is actuated by a rack and pinion motion inside the tubular burner
in the usual way.
The concentric extinguisher tubes d and e (one of which works or
slides outside the tubular burner c, and the other inside, as indicated by
dotted lines in Fig. 3) are connected together by a cross pin or screw d',
Fig. 3, which passes through a slot or long vertical hole in the side of

page_text: the Argand burner, as shewn by dots in Fig. 3. The extinguisher
tubes d and e are moved up or down by means of a rod e¹, one end of
which is secured to the inside of the inner tube e, and the other end is
bent at right angles, and forms a handle e³, whereby the extinguisher
tubes are raised or lowered.
The lower or bent end of this rod when raised by the handle is nipped
by a spring clip ffixed to the body of the lamp or to the lower part of
the burner, and this clip holds up the extinguisher tubes when they
are raised by the rod to put out the light.
Either of these improvements may be applied to moderator lamps, and
it will be seen that by the arrangement of parts above described and
shewn in the Drawing the chimney holder and concentric extinguisher
tubes may be moved up or down independent of each other.
Having now described my Invention of "Improvements in the
Construction of Lamps," and having explained the manner of carrying
the same into effect, I claim as the Invention secured to me by Letters
Patent as aforesaid, detaching the chimney holder from the double tube
extinguisher, so that each of these parts may be moved up or down
independent of the other, as herein set forth.
In witness whereof, I, the said Richard Bright, have hereunto set
my hand and seal, the Twentieth day of January, in the year
of our Lord One thousand eight hundred and seventy-two.
RP. BRIGHT. (L.S.)