IMPROVEMENTS IN THE MEANS AND MODE OF ADMITTING AND REGULATING ATMOSPHERIC AIR TO GAS RUDNERS
Year: 1867

page_text: LETTERS PATENT to William Henry Stallard, of Mera Lodge, Bexley
Heath, in the County of Kent, for the Invention of "IMPROVEMENTS
IN THE MEANS AND MODE OF ADMITTING AND REGULATING ATMOSPHERIC AIR
TO GAS RUDNERS
"
Sealed the 26th July 1867, and dated the 28th January 1867.
PROVISIONAL SPECIFICATION left by the said William Henry Stallard
at the Office of the Commissioners of Patents, with bis Petition, on the
28th January 1867.
1. WILLIAM HENRY STALLARD, of Mera Lodge, Bexley Heath, in the
County of Kent, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MEANS AND MODE OF ADMITTING AND REGULATING
ATMOSPHERIC AIR OR VAPOUR TO GAS BURNERS," to be as follows:-
This Invention relates to gas lights and burners generally, and has for its.
object to increase the illuminating power thereof, and consists in enclosing.
the said burners so that no atmospheric air or vapour can be admitted
thereto below the line of combustion without passing through a regulating or
adjusting opening or apertures, the said opening or apertures being fitted with.
adjusting media for regulating the quantity of air or vapour as the state of the
light may require.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Henry Stallard in the Great Seal Patent Office
on the 27th July 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HENRY STALLARD, of Mera Lodge, Bexley Heath, in the County of Kent,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of January, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Ifer heirs and successors, give and grant unto me,
the said William Henry Stallard, Her special licence that I, the said
William Henry Stallard, my executors, administrators, and assigns, or such
others as I, the said William Henry Stallard, my executors, administrators,
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 MEANS AND MODE OF ADMITTING
AND REGULATING ATMOSPHERIC AIR OR VAPOUR TO GAS BURNERS," upon the
condition (amongst others) that I, the said William Henry Stallard, 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 William Henry Stallard, 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, that is to say :-
This Invention relates to gas lights and burners generally, and has for its
object to increase the illuminating power thereof, and consists in inclosing
the said burners so that no atmospheric air or vapour can be admitted thereto
below the line of combustion without passing through a regulating or
adjusting opening or apertures, the said opening or apertures being fitted
with adjusting media for regulating the quantity of air or vapour as the state
of the light may require.

page_text: In carrying out my said Invention in practice, instead of admitting the air
or vapour in the usual way by a full or entire opening, or through a plate
perforated over its entire surface, I close the space under the burner and
admit and regulate the air to the burner by causing it to pass through slots,
apertures, or perforations forming the same or as nearly as possible the same
shape in plan (or horizontal plane) as that in which the flame burns; take
for instance the "Argand" or other burner where the jets of flame form a
circle; in such cases admit the air through slits, apertures, or perforations
also forming a circle, such perforations being in one or more rows, and the
air in all cases being excluded from passing to the flame through the centre
space a within the said rows or inside the circle or curved line of slits,
apertures, or perforations (except when such disc or plate is placed inside
the burner), see Figs. 1, 2, and 3 on the accompanying Drawing. I
accomplish this by fitting a closing circular or curved disc a, see Fig. 4,
under the circular aperture of the burner, which disc is capable of being
raised, lowered, and adjusted by means of screws, sliding stems, or clips, either
below or within the burner, so as to regulate the quantity of air thereby
admitted to the flame, the form of the current thus admitted between the
periphery of the disc and bottom or inside of the burner, as shown by the
arrows, being as before described in the shape of the flame, or in a thin
curved or cylindrical film. When the exact position of the disc at which
the required volume of air will pass has been ascertained, the said disc may
be permanently fixed in such position or be made an integral part of the
burner, and when placed inside the burner this dise may be perforated in the
ordinary way. Instead of using an adjusting plain disc, as before described,
I fix a plate or cup to or within the burner, such plate having a circle or
curved line of slots or perforations therein with a plain or entire centre for
admitting the air in a similar manner to that before described. I further
regulate the air which passes between the glass and the burner by means of
a moveable closing plate of glass or other suitable material under the bottom
of the chimney, between the bottom of which chimney and such closing plate
the air passes to the outside of the flame, the area of the opening being in this
case adjustable by raising or lowering the chimney, or by raising and lowering
the plate, which plate may be of greater or less diameter than the chimney, and
if necessary be fitted to rise and fall within it, the air being still admitted through
a circular or ring-shaped aperture. In the case of flat burners I make the closing
disc or plate with straight slots or with perforations in straight lines, one on each
side of the burner, see Figs. 5 and 6, the chimies, shades, or enclosing
glasses being also flattened to assimilate to that of the form of the flanie.

page_text: The air in all cases is thus admitted below the level of the line of com-
bustion.
I claim, 1st, the admission and regulation of the air to the flame in a
current or currents corresponding in shape or form to that in which the flame
burns.
2ndly, adjusting media, as herein described, or equivalent thereto, for
controlling the volume of air thus admitted to the flame.
In witness whereof, I, the said William Henry Stallard, have hereunto
set my hand and seal, this Twenty-sixth day of July, in the year of
our Lord One thousand eight hundred and sixty-seven.
WILLIAM H. STALLARD. (L.S.)